BGAS Q&A

BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 CORROSION # 1 Important Points Galvanic list etihparG tiaairar ravlGt 022 aekGv dGiL rehhGt naa eliis lliM liioss oMMiswoL elits oMMi milAlmllA clml eMiml llA + 0.25v 0.0 v - 0.1 v - 0.15 v - 0.2 v - 0.35 v - 0.35 v - 0.4 v - 0.7 v - 0.7 v - 0.9 v - 1.0 v - 1.6 v More noble metals Less noble metal Factors that influence the rate of corrosion as follows. 1. Variation in oxygen content on the steel surface (wet/dry) 2. R.H % (Above 60% is critical) 3. Presence of impurities in the air (acid, alkalis, salt etc.) 4. Higher nobility metals in contact with the steel. (Mill scale) 1|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 Corrosion is defined as a) Rusting of Cathode b) Oxidation of iron in contact with water c) Degradation of a material by chemical or electrochemical means d) Breakdown of metal by hydrogen 2. What is an electrolyte? a) It is a mixture of Salts and water b) A substance which will conduct electricity and cause rusting c) Oxidation liquid which will attack steel. d) A substance which will conduct a current and be broken down by it. 3. The degradation of material by chemical or electrochemical means is a) Pickling followed by passivation b) Acid cleaning c) Corrosion d) An Electrolyte 4. Is the electrical circuit in a corrosion reaction? a)AC b)DC c) Negative charge d) Positive charge 5. Hydrogen is evolved at a) The anode at all times. b) The Cathode at all times. c) The cathode as a byproduct of the corrosion reaction d) The Anode as corrosion takes place 6. Positively charged area a) Anode b) Cathode c) Electrolyte d) Electron 2|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Negatively charged area a) Anode b) Cathode c) Electrolyte d) Electron 8. What are three elements needed for corrosion to occur? a) Hydrogen, Oxygen, Water b) Electron, Proton, Neutron c) Anode, Cathode, Electrolyte d) Temperature, Salt, Acid 9. Water will be drawn through the film and the resulting solution builds up a pressure under the film forced to form a) Blister b) Micron c) Sulphates d) Chloride 10. Hygroscopic blisters are called a) Sulphates b) Chlorides c) Pinhead size water filled d) Corrosion 11. Presence of oxygen into the Cathodic reaction the Number of Hydroxyl ions doubles a) Sulphates b) Double the corrosion rate c) Pinhead size water filled d) Corrosion not occur 12. Another name for the Galvanic List, is a) The Corrosion list b) Electro Negative List c) Electrical Corrosive properties series d) Electromotive Forces Series 3|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 Two examples of hygroscopic salts would be a) Iron phosphates and Iron Chromates b) Iron Chordates and Iron Oxides c) Iron Sulphates and Iron Chlorides d) Iron Sulphates and Iron Silicates 14. If Zinc and Aluminium were in close contacts, in the presence or electrolyte a) Aluminium would corrode b) They would corrode equally. c) Zinc would corrode d) None of the above 15. MEM’s are also known as a) Moisture Enriched Mat2erials b) Metal Eating Microbes c) Maximum Evolved Moistures d) Material Electron Mobility 16. SRB’s are also known as a) Salts Reducing Bacteria b) Substrate Reducing Bacteria c) Solid Reducing Bacteria d) Sulphur Reducing Bacteria 17. The factors which can affect the rate corrosion are a) Temperature, Time and Coating system b) Bi-Metallic contact, Hygroscopic Salts and Bacteria c) Coating system, Pipe diameter and Ultra Violet Light d) Blasting Grades, Rust Grades and surface profile 18. The thickness of Mill scale is a) 25 m to 100 m b) 100 to 150 m c) Zero d) Dependent upon the material thickness 4|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 19. 2013 The three compressed oxides which from Mill scale are a) Iron Oxide, Rust and Iron Sulphate b) Wusite (FeO), Hematite (Fe3O4) and Magnetite (Fe2O3) c) Iron sulphate, Iron Chloride and Iron Phosphate d) RSC, RSJ and RSA 20. Name of sub atomic particles a) Proton, Neutron, Electron b) Micron, poron, Moron c) Wusite, Hematite and Magnetite d) Anode, Cathode, Electrolyte 21. Which of the following is the best noble metal? a) Magnesium b) Tungsten c) Mill scale d) Zinc 22. Which is cathode in corrosion? a)Water b)Oxygen c)Substrate d)Electrons released 23. Which one is more noble? a)Silver b)Steel c)Magnesium d)Zinc 24. Fe++ is ______________ a)An atom b)Molecule c) Iron Ion d)Iron Substrate 5|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 25. 2013 Which one is not a compound in mill scale? a) FeO b) Fe2O3 c) Fe2 O4 d) Fe3O4 26. Which metal corrode fast according to bimetallic principle? a) Less electronegative b) More Electropositive c) More noble d) Less Noble 27. Which one of the following is more noble? a) Zinc b) Steel c) Millscale d) Aluminium 28. The corrosion will takes place at a) The Anode b) The Cathode c) The electrolyte d) Anode first than cathode 29. The by production of corrosion reaction is a) Iron oxide b) Iron sulphates c) Iron chromate d) Iron chloride 30.Aerobic condition would refer to? a) Hydrogen b) Oxygen c) Nitrogen d) Moisture 6|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 31. 2013 Which of the following is the highest known potential value? a) Mill scale b) Tin c) Copper d) Iron 32. The chemical composition of Hematite? a) Fe2 O3 b) Oxygen c) Nitrogen d) Moisture 33. Which two materials are commonly used as sacrificial anodes? a) Copper and Tungsten b) Aluminium and Graphite c) Zinc and Aluminium d) Lead and Tin 34. Which of the following could be classified as a major cause of microbial corrosion? a) Sulphur Eating Metal b) Sulphur Reducing Bacteria c) Rust inhibitive salts d) Iron phosphates 35. Which is the more noble metal? a) Steel b) Aluminum c) Magnesium d) Tin 36. Which of the element will corrode quickly as per bimetallic principle? a) Steel-Magnesium b) Steel – Zinc c) Steel - Aluminium d) Carbon 7|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 37. 2013 Bi metallic corrosion causes a) Causes a material of a higher nobility to corrode faster b) Causes a material of the same nobility to corrode faster c) Causes a material of lower nobility to corrode faster d) Causes a material containing carbon to corrode faster 38. Molecular freedom of steel metal increases when a) substrate contains salt b) presence of oxygen c) temperature increases d) Bacteria Affected 39. Which is more electropositive? a) silver b) steel c) mill scale d) magnesium 40. Mill scale is formed during steel rolling manufacturing operations in temperature at a) Below 580oC b) Excess 580oC c) up to 580oC d) on 580oC 41. Chemical name of rust a) Hygroscopic salts b) Hydrous iron oxide c) mill scale d) Hygroscopic blisters 42. Hygroscopic slats cause a) Rash rusting b) Pinholes c) Rogue peak d) Blisters 8|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 43. 2013 In the corrosion circuit, electron travel from a) Anode to Cathode b) Cathode to Anode c) Electrolyte to both Cathode to Anode d) None of the above 44. In the corrosion circuit, electron flow from a) Anode to Cathode, via Electrolyte b) Positive to Negative c) Electrolyte to both Cathode to Anode d) Anode to Cathode, via metallic path 45. In which salts would be found in Marine environment? a) Potassium b) Chloride c) Sulphate d) Zinc sulphate 46. In which salts would be found in Agricultural environment? a) Sulphate b) Potassium c) Chloride d) Potassium chloride 48. An Anode becomes positively charged by a) Releasing proton to the cathode b) Releasing electrons to the cathode c) Receiving atoms from the cathode d) None of the above 49. In the galvanic list, which of the following materials has the highest known potential values? a) Mill scale b) Copper c) Al d) Graphite 9|Page BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 50. 2013 AnSteel becomes positively charged by a) Releasing proton to the cathode b) Releasing electrons to the cathode c) Receiving atoms from the cathode d) None of the above 51. In the galvanic list, which of the following materials has the lowest known potential values? a) Mill scale b) Copper c) Aluminium d) Graphite 52. Atom acquire the electric charged are a) Atomisation b) Solaration c) Polarisation d) Electromation 10 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 SURFACE PREPARATION METHODS & STANDARDS # 2 Types Of Abrasive Blasting a) Dry Abrasive Blast Cleaning b) Water Blasting c) Hand and Power Tool Cleaning d) Flame Cleaning e) Pickling f) Vapour Degreasing g) Weathering Types of Abrasive ( BS 7079 pt E) None metallic (Mineral) expendable Copper Slag, Nickel Slag, Garnet, Sand. Metallic (Recyclable) Steel Grit, Steel Shot, Grit and Shot Mix, Garnet Agricultural by-product Walnut Shell , Coconut Shell Grit cuts the profiles; shot controls the peak (so uniform profile) Digital gauges (measuring methods)  Surface Profile Needle Gauge  Dial Micrometers and Replica Tape. Dial Micrometer and Replica Tape (Mylar tape)  trade name Testex  corn plaster method  method provides a permanent record Steel surface Rust Grades. BS 7079 Pt A, ISO 8501, SS 05 59 00 Rust Grade A Rust Grade B Rust Grade C Rust Grade D - largely covered with adherent mill scale - begun to rust / which the mill scale has begun to flake. - mill scale has rusted away /can be scraped / slight pitting - mill scale has rusted away / general pitting 11 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Abrasive Blasting Grades Sa 1 Sa 2 Light Blast Cleaning Thorough Blast Cleaning Sa 2 ½ Very Thorough Blast Cleaning Sa 3 Blast Cleaning to Visually Clean Steel Poorly adhering mill scale, rust Most of the mill scale, rust Any residual contamination shall be firmly adhering Mill scale, rust and show only as slight stains in the form of spots or stripes Uniform metallic colour / White Metal Hand and Power Tool Grades St2 St3 Thorough hand and power tool cleaning Very thorough hand and power tool cleaning poorly adhering mill scale rust metallic sheen arising from the metallic substrate Rust Grade: A - Covered in Mill scale with little or no rust B - A Mixture of Mill scale and rust. C - Mill scale gone, rusted with slight surface pitting. D - Heavily rusted and pitted. Grades of wire brushing St 2- Thorough hand and power tool cleaning (manual) St3 - Very thorough hand and power tool cleaning (Mech.) 12 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 The British standard for preparation of steel substrate? a) BS 3900 b) IGE SR 21 c) BS 7079 d) ISO 8501 2. The two factors to consider when inspecting a surface preparation a) Degree of cleanliness and time taken b) Surface profile and material condition c) Surface profile and degree of cleanliness d) Dependent upon the material thickness 3. Which is nota surface preparation cleaning methods in before paint application? a) Dry abrasive blast cleaning b) Hand and power tool leaning c) Flame cleaning d) Light blast cleaning 4. Which pressure suitable for dry blasting? a)20psi b)100psi c)220psi d)450psi 5. When using a Venturi Nozzle at 100 psi the abrasive exits at approximately what speed? a) 200 mph b) 450 mph c) 1200 mph d) 100 mph 6. Sand is not permitted as a dry blast abrasive, as directed by a) BGC/PS/CW5 b) BS 7079 Part A c) COSHH d) BS 410 13 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Which standard is not permitted as a Sand blast abrasive? a) BS 4800 b) BS 7079 Part A c) SI 1657 d) BS 410 8. Which one is non-metallic abrasive? a) Iron Silica b) Steel Shot c) Steel Grit d) Grit-Shot Mix 9. Copper slag is a a) Metallic b) None metallic c) Agriculture product d) Dry sand 10. Copper slag is a a) Metallic b) Mineral c) Agriculture product d) Dry sand 11. Copper slag is a a) Recyclable b) Expendable c) Reuse d) Angular chilled iron 12. Which abrasive shattering on impact release silica? a)Sand b) Garnet c)Copper d) Angular chilled iron 14 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 Which is grit form? a) Random b) Sharp c)Amorphous d) All the above 14. Metallic abrasive are a) Expendable b) Recyclables c)Silica free d) None of the above 15. Copper slag is also known as a) Garnet b) Black sand c) Iron silica d) Steel Grit 16. Colour of Copper slag is a) Black shining b) Brown c) Red d) Yellow 17. The most common type of abrasive used for British Gas site work is a) Copper slag b) Grit & Shot mix c) Garnet d) Angular Chilled Iron 18. Abrasive used on site for British Gas projects must be a) Mixed with sand, to reduce cost b) Stored correctly prior to use c) Expendable d) Used up to a Maximum of three times only 15 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 19. 2013 How many times can Garnet be used as abrasive for BGas site use? a) Upto 3 times b) None c) It must be expendable d) 20 times 20. Angular chilled iron isformed from a) Metallic shot b) Metallic grit c) Metallic gritand Metallic shot d) Garnet 21. Metallic shot is a) Shatters b) Spherical c) Random d) Cutting Edges 22. Irregular profile are given a) Girt b) Shot c) Girt and shot d) Garnet 23. Which type of abrasive give more uniform profile? a) Metallic Shot b) Steel Grit c) Copper Slag d) Metallic Shot & Grit Mixed 24. Which type of abrasive used for controlling Rash Rusting? a) Metallic Shot b) Steel Grit c) Copper Slag d) Metallic Shot & Grit Mixed 16 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 25. 2013 Which of the effect produce when rogue peaks are concentrated areas? a) Rash Rusting b) Flash Rusting c) Rust Staining d) Rust Blooming 26. What is the cause of rash rusting? a) Mill scale contamination b) Hygroscopic salts c) Rogue Peaks d) Contaminated blast abrasive 27. What is the reason for spot rusting? a) Surface contamination b) Millscale c) Rogue peak d) Hygroscopic salt 28. The correct ratio of a working mix would be a) 70-80% Grit : 20-30% Shot b) 50% Grit : 50% Shot c) 70-80% shot : 20-30% Grit d) 20-25% Sand : 75-80% Copper Slag 29. Metallic Shot also has which affect upon the material? a) Stress relieves b) Physically deforms c)Work hardens d) Causes Slivers 30. What are the properties of an abrasive? a) Size ,Hardness,Density,shape b) Velocity, Impingement, Time spend, Shape c) Rash, Rust rashing, Rust spotting, Rust blooming d) Rogue peak, Key, Amplitude, Peak to through 17 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 31. 2013 Degree of cleanliness not depends a) Time spent on area b) Angle of impingement c) Velocity of the particles d) Substrate rust grade 32. The standard for sizing of abrasives is a) BS 7079 b) BS 410 c) BGC/PS/PA10 d) SI 1657 33. The force required to separate two surfaces in touch. a) Profile b) Adhesion c) Anchor pattern d) Amplitude 34. The two theories of adhesion are a) Molecular interference and molecular attraction b) Molecular integration and molecular connection c) Molecular cross linking and molecular coalescence d) Microscopic interaction and microscopic collaboration 35. Another names of profile is? a) Anchor pattern b) Key c) Amplitude d) All of the above 36. Amplitude refers to what? a) The peak to through height of a blast profile b) The height required for scaffolding prior to blast cleaning c) The velocity of abrasive particles d) The roughness of an abrasive particle 18 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 37. 2013 Anchor pattern, key, peak-to-through height and amplitude are names given to what? a) The abrasive properties b) The cross section of a blasted area c) The total area of blasted substrate d) The potential of adhesion 38. Degree of roughness related to a)Abrasive blasting b)Hand and power tool c) Anchor pattern d)Abrasive hardness 39. Flash Rust a) Due to rogue peak b) Due to Moisture c)Due to air temperature d) Due to steel temperature 40. Profile thickness as per BGAS a) 30-75 microns b) 25-100 microns c) 30-70 microns d) 25-70 microns 41. Blasting in one area for too long, produces what? a) Hackles b) Rogue Peaks c) Silvers d) Laminations 42. Longitudinal crack is called a) Laminations (slivers) b) Hackles c) Rogue peaks d) Amplitude 19 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 43. 2013 Surface profile thickness is measured by? a) Comparators b) Digital profile needle gauge c) Surface profile needle gauge d) Dial micrometer with replica tape 44. Surface needle gauge calibrated by a) Blasted surface b) Smooth piece of glass c) Bare metal d) Coated metal 45. Replica tape supplied in grades a) Coarse and Extra Coarse b) Coarse and fine coarse c) Extra coarseand mediumcoarse d) Coarse and below coarse 46. Trade name of Replica tape a) Mylar b) Paper c) Testex d) Polyester 47. Testex also called a) Mylar b) Paper c) Polyester d) Corn plaster 48. Thickness of Replica tape a) 20 microns b) 40 microns c) 50 microns d) 30 microns 20 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 49. 2013 What is the material used in surface replica tape, used to measure profile? a) Mylex b) Testrex c) Mylar d) Mylon 50. What is the minimumNumber of readings required for a dial micrometer? a) Minimum of 101 b) Minimum of twelve c) One only d) As many as you wish, but the average reading must be measured 51. Transparent layer in replica tape is ____________ a)Milar b)Mylex c)Mylar d)Testex 52. When checking surface profiled using X-Course replica tape : a) 50 microns must be added to the final reading b) The average Number of readings must be taken c) 50 microns must be deducted from the reading d) A minimum of ten readings must be taken. 53. ______________ not suitable for profile measurement. a)Dial micrometer b) Surface profile needle gauge c) Surface comparator d)Corn plasters method 54. What is the main advantage of using Testex papers for surface profile measurement? a) It also measures cleanliness b) Most accurate over a large area c) Easy to use d) Permanent record 21 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 55. 2013 When using replica tape 50µm deducted because _________ a) Thickness of paper b) Thickness of transparent layer c) Thickness of Testex d) Dial micrometer Criteria 56. Coarse grade for measuring profile range is a) 30-50 µm b) 37-115µm c) 20-50 µm d) 30-75 µm 57. Extra Coarse grade for measuring profile range is a) 30-50 µm b) 37-115 µm(40-115µm) c) 20-50 µm d) 30-75 µm 58. 1000 µm = a) 1cm b) 1mm c) 10mm d) 0.1mm 59. 1mill (thou) = a)24.5 microns b)25.4 mm c)25.4 microns d)24.4 mm 60. Dial position gives the Number of complete full revolutions of needle gauge on the scale a)2 µm scale is 100µm b)5 µm scale is 500µm c) 2 µm scale is 200 µm d)5 µm scale is 250µm 22 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 61. 2013 Assess the roughness a)Naked eye b)Visual aid c)Tactile d)All of the above 62. Size of comparators diameter hole in the middle a) 4 cm square with 2 cm b) 8 cm square with 2 cm c)6 cm square with 2 cm d)10 cm square with 3 cm 63. Any profile below the lower limit for fine grading is referred to a) Coarser than fine b) Coarser than Coarse c) Finer than fine d) Finer than Coarse 64. Any profile above the upper limit for fine grading is referred to a) Coarser than fine b) Coarser than Coarse c) Finer than fine d) Finer than Coarse 65. Preparation of steel substrate before application of paints and related products a) BS 7079 Pt C b) BS 7079 Pt. A c) BS 7079 Pt B d) BS 7079 Pt D 66. Rust Grade A can be described as a) Tightly adhering Mill scale, with evident heavy pitting b) Clean white metal c) Tightly adhering Mill scale, with no apparent corrosion d) Mill scale which has begun to flake, or can be scraped away 23 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 67. 2013 Rust Grade B can be described as a) Tightly adhering Mill scale, with evident heavy pitting b) Clean white metal c) Tightly adhering Mill scale, with no apparent corrosion d) Mill scale which has begun to flake, or can be scraped away 68. Rust Grade C can be described as a) Tightly adhering mill scale, this can be brushed clean b) Loosely adhering mill scale, with no evident pitting c) Mill scale almost totally removed, visible rust, slight pitting d) Heavy pitting visible, heavy corrosion 69. Rust Grade D can be described as a) Tightly adhering Mill scale, with evident heavy pitting b) Mill scale rusted away, generalpitting, clearvisible. c) Tightly adhering Mill scale, with no apparent corrosion d) Mill scale which has begun to flake, or can be scraped away 70. Corrosion begins on the metal and mill scale begins of flake away? a) Rust Grade A b) Rust Grade B c) Rust Grade C d) Rust Grade D 71. Thorough Blast Cleaning a) poorly adhering mill scale, rust b) most of the millscale, rust and residual contamination shall be firmly adhering c) millscale, rust, slight stains in the form of spots or stripes d) free from mill scale, have a uniform metallic colour 72. Very Thorough Blast Cleaning a) poorly adhering mill scale, rust b)most of the millscale, rust and residual contamination shall be firmly adhering c) millscale, rust, slight stains in the form of spots or stripes d) free from mill scale, have a uniform metallic colour 24 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 73. 2013 Blast cleaning to visually clean steel a) poorly adhering mill scale, rust b) most of the millscale, rust and residual contamination shall be firmly adhering c) millscale, rust, slight stains in the form of spots or stripes d) free from mill scale, have a uniform metallic colour 74. Which blasting Grade best describes light blast cleaning? a) Sa 2 b) Sa 21/2 c) Sa3 d) Sa1 75. Which blasting Grade best describes Thorough blast cleaning? a) Sa 2 b) Sa 21/2 c) Sa3 d) Sa1 76. Very thorough blast cleaning is refers to a) Sa1 b) Sa2 c) Sa2½ d) Sa3 77. Blast cleaning to visually clean steel is refers to a) Sa1 b) Sa2 c) Sa2½ d) Sa3 78. How many photographs of Rust grade are in BS 7079 part A? a) 4 b) 14 c) 8 d) 16 25 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 79. 2013 How many Abrasive Blast Cleaning Photographs are in BS 7079 part A? a) 4 b) 14 c) 8 d) 16 80. How many photographs of flame cleaning standards are in BS 7079 part A? a) 4 b) 14 c) 8 d) 16 81. How many photographs available by using tools according to BS 7079? a) 14 b) 6 c) 4 d) 16 82. BS 7079 does not contains a) Rust Grades b) Blast Grades c) Hand and Power tool Grades d) Salt tests on Substrate 83. Wheelabrators sometimes called as a) Centrifugal blast unit b) Dry abrasive blasting c) Wheel jetting d) Water blasting 84. ____________ Abrasive is preferred for Wheelabrators a) Steel Grit b) Steel Shot c) Grit and Shot Mixed d) Copper Slag 26 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 85. 2013 What is the approximate speed of the abrasive particles exiting a Wheelabrators? a) 450 mph b) 220 mph c) Mach 3 d) 100 psi 86. Air pressure measured by a) Pound per square inch b) Pound per square feet c) Cubic feet per min d) Cubic feet per inch 87. Air pressure delivered through a) Pound per square inch b) Pound per square feet c) Cubic feet per min d) Cubic feet per inch 88. Which blasting use is removal for soluble salts? a) Wet abrasive blasting b)Dry abrasive blasting c) Solvent / with water d) Water wash 89. Which blasting use are removal for Sulphate and chloride? a) High pressure water blasting b)High pressure water plus abrasive c) Low pressure water plus abrasive d) Water wash 90. Which blasting use is removal for toxic materials? a) Wet abrasive blasting b)Dry abrasive blasting c) Solvent / with water d) Water wash 27 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 91. 2013 How many photographs totally covered as per BS 7079? a) 32 b) 24 c) 28 d) 30 92. Another name for a Vapour Trap is? a) Air wash cup b) Dry out pot c) Knock out pot d) Pressure regulator 93. One of the most important safety items of equipment in abrasive blasting is a) Dry abrasive mix b) The banana gauge c) Dead means handle d) 100 psi compressor 94. Miser Valve ___________________ in dry blasting a) Controls the Air Pressure b) Controls the flow of abrasives c) Removes oil and water d) Avoids leakage 95. The optimum pressure to achieve 100% efficiency in abrasive blast cleaning is? a) 75 psi b) 450 psi c) 100 psi d) 220 psi 96. Reccova valve is ____________ a)Control abrasive transfer b)Stores abrasives c)Removes water d)Control air from compressor 28 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 97. 2013 With every 11 degree rise in temperature, the air’s ability to hold water a) Would rise by 11% b) Would half c) Would double d) Would decrease by 11% 98. Carbon Impregnated hoses are used to a) Conduct Electricity b) Prevent static electricity c) Reduce friction d) Discharge static electricity 99. _______________ can be used to check air pressure a) Hygrometer b) Surface profile needle gauge c) Hypodermic needle gauge d) Touch pyrometer 100. Why steam cleaning is not conducive the oil and gas industry? a) Require electricity b)Need more water c) Require heat source d) Highly expensive 101. Air/Abrasive stream is using water approx. a) One and a half litre /min b)Need more water c) Two litre/min d) Three litre / min 102. Sometimes use flame cleaning at site, what should be followed? a) Approval site engineer b) Once get approval from client c) Using wire brushing grades d) Not to be used oil and gas industry 29 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 103. 2013 The blasting hose should be carbon impregnated? a) Under direct operator control for his/her own safety b) To reduce the chance of the operator getting shock form static c) Black color gives good look d) Carbon hose increase the speed of abrasive speed 104. How much air supplied, if nozzle size is ½ inch a)450 cfm b)413cfm c)100 cfm d)220 cfm 105. Which of the recommended stand-off distance and speed at which the abrasive leaves a Venturi Nozzle? a) 450 mm and 200 mph b) 220 mm and 450 mph c) 220 mm and 220 mph d) 450 mm and 450 mph 106. Compared to a Venturi Nozzle, a straight bore nozzle would give a) Better paint application b) More speed c) Larger area coverage d) Greater accuracy 107. Operating pressure at a) 200 psi b) 450 psi c) 100 psi d) 220 psi 108. What safety requirement covered for blasting equipment used? a) HASAWA b) COSHH c) EPA d) IGE/SR21 30 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 109. 2013 IGE SR 21 is associated with a) Gas Plant Manufacture b) Handling of Methanol c) Abrasive Blasting Safety d) Using of Sand Abrasive 110. Burnishing will produce by a) Needle gun b) Wire brush c) Emery cloth d) Grinders 111. Which one is not associated with wet blasting? a) Spark free b) Profile roughness c) Remove Toxic contents d) Remove Soluble Salts 112. High pressure water blasting operates up to which pressure? a) 100 psi b) 10,000 psi c) 250 psi d) 30000 psi 113. High pressure water plus abrasive injection operates up to which pressure? a) 100 psi b) 20,000 psi c) 250 psi d) 30000 psi 114. Low pressure water plus abrasive injection operates up to which pressure? a) 100 psi b) 20,000 psi c) 250 psi d) 30000 psi 31 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 115. 2013 Which type of the cleaning not allowed in the Oil and Gas industry? a) Dry abrasive b) Water jetting c) Steam cleaning d) Hand and power tool 116. Which application not in hand and power tool? a) wire brushing b) needle gunning c) grinding d) None of the above 117. Wire brushes used for BGas hand & power tool cleaning, must be made from which material? a) Tungsten or Stainless steel b) Copper or Brass c) Beryllium Bronze or Phosphor Bronze d) The same material as the pipe 118. A typical remedy for burnishing would be. a) Power brushing b) Emery paper or similar c) Needle gun d) Addition of thinners 119. Very coarse profile will occurs when a)High pressure Water blasting b)Flame cleaning c)Dry Abrasive blasting d)Needle Gunning 120. Phosphor Bronze/Beryllium Bronze refers to a) Sparking Alloys b) Non Sparking Alloys c) Alloys of Nickel d) Ferroalloys 32 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 121. 2013 Which of the hand and power tool equipment not allowed in the Gas industry? a) Phosphor bronze b) Beryllium bronze c) Grinding wheel d) Emery cloth 122. Which grade is not having photographs in wire brushing? a) Rust Grade B b) Rust Grade C c) Rust Grade A d) Rust Grade D 123. Which one factor is not flame cleaning? a) Expansion b) Dehydration c) Heat penetration d) Passivation 124. Phosphate process of steel structure is termed as a) Expansion b) Passivation c) Cathodic protection d) Salt Detection 125. Which of the following do not belong to the Footners Duplex System? a) Chromic Acid or Phosphoric acid b) Sulphuric Acid c) Iron Sulphates and IronChloride d) Iron fillings 126. Chemical cleaning is another name for a)Silver nitrate test b)Potassium ferry cyanide test c) Pickling d)Copper sulphate test 33 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 127. 2013 Concentration and temperature of sulphuric acid in pickling process a) 5-10% , 65-70 oC and 5-25 minutes b) 65-70% , 5-10oC and 5-20 minutes c) 2%, 80oC and 5-25 minutes d) 80%, 65-75 oC and 5-20 minutes 128. Concentration and temperature of phosphoric/chromic acid in pickling process a) 5-10% , 65-70 oC and 5-25 minutes b) 2% , 80 oC and 1-2 minutes c) 2%, 80oC and 5-25 minutes d) 80%, 65-75 oC and 5-20 minutes 129. What is pH? a) Percentage of Hydrogen b) Percentage of Helium c) Potential of Hydrogen d) Potential of Helium 130. Which pH range covers Acids? a) 7 to 14 b) 0 to 7 c) 0 to 14 d) 5 to 10 131. Which pH range covers Alkalinity? a) 7 to 14 b) 0 to 7 c) 0 to 14 d) 5 to 10 132. When measuring acidity, alkalinity, distilled water has a pH value is? a) 1 b) 3.5 to 4.5 c) 0 to 14 d) 7 34 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 133. 2013 Which PH range is required after chemical cleaning of steel substrate? a) 7 b) 7 - 14 c) 4.5 – 7 d) 0 134. What is the neutral figure on the pH scale? a) 7 b) 7 - 14 c) 4.5 – 7 d) 0 135. What is the main cause of flash rusting on a substrate? a) Rogue Peaks b) Moisture c) Hackles d) Hygroscopic salts 136. Inclusion is defect related to a)Rogue peak b)Lamination c)Hackle d)High thickness profile 137. If Profile thickness is higher than specified, result will be a) Rash rusting b) Cause Paint adhesion c) Blisters d) Mill scale 138. Where would you normally use a comparator gauge? a) At CP system reference point b) To determine surface roughness c) Check for correct pre-heat prior to application of FBE d) To assess the rust Grade of a material. 35 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 139. 2013 Wet abrasive blast cleaning of a surface should be followed by dry abrasive blast cleaning? a) Only as directed by the engineer b) To remove the surface profile created by the wet process c) Because the immediate oxidation of the substrate after wet blasting must be removed d) Does not required 140. Un fused area in steel is _____________ a)Sliver b)Rogue Peak c)Hackle d)Pinhole 141. Lamination found must referred to a) Engineer b) Site inspector c) Contractor d) Project Manager 142. Which of the recommended stand-off distance and speed at which the abrasive leaves a Straight bore Nozzle? a) 450 mm and 200 mph b) 220 mm and 450 mph c) 220 mm and 220 mph d) 450 mm and 450 mph 143. Surface profile thickness assets by a) The Comparators b) Dial micrometer and needle gauge c) Dial micrometer with replica tape d) Digital surface needle gauge 144. Every 1psi drop in pressure results in an efficiency drop of a) 2 psi b) 1 ½ psi c) 3 psi d) None 36 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 145. 2013 Enclosed blasting chambers are used because a) They protect other people and equipment from blast scatter b) They are cheap to set up c) They provide adequate surface profile d) They normally use expendable abrasives 146. Burnishing needs to be treated by a) Needle gun b) Wire brushes c) Grinders d) Emery cloth 147. Enclosed system is a) Water blasting b) Wheelabrators c) Flame cleaning d) Hand and power tool 148. Open blasting system is a) Water Jetting b) Wheelabrators c) Flame cleaning d) Chemical process 149. Mill scale removed by a) Use needle gun b) Bristle on the brushes c) Water Jetting d) Dry blasting 150. Which type of nozzle given greater control? a) Venture Nozzle b)Short bore Nozzle c) Straight bore Nozzle d) Angled Nozzle 37 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 151. 2013 Copper Slag is a) Shatters b) Does not shatters c) Spherical d) None of the above 152. Limits for Testex Tape use Coarse a) 0.8 to 2.0 mil b) 0.6 to 2.0 mil c) 0.8 to 4.0 mil d) 0.6 to 4.0 mil 153. Limits for Testex Tape use X - Coarse a) 0.8 to 2.0 mil b) 0.6 to 2.0 mil c) 1.5 to 4.5 mil d) 1.6 to 4.0 mil 38 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 SURFACE CONTAMINANTS AND TESTS FOR DETECTION # 3 Qualitative test Test for soluble iron salts Potassium Hexa-cyanoferrate Test Test to detect soluble chlorides Silver Nitrate Test Copper Sulphate Test Test to detect the presence of mill scale Test to detect the presence of dust on a substrate Test to detect the presence of moisture on a substrate Test to detect the presence of oil or grease 01. Quantitative test Merkoquant Bresle sample patch Salt contamination meters dolly test A procedure to test for the presence of Hygroscopic salts, is the a) PotassiumHexa-cyanoferrate test b) Copper sulphate test c) Footners Duplex test d) Hegman Grind test 02. The test for detecting soluble chloride salts? a) The silver Nitrate Test b) The Copper Sulphate Test c) Ford Flow cup test d) The ultra violet test 03. Which of the following is not a test for contaminants? a) Silver Nitrate Test b) Gold leaf test c) Copper sulphate test d) Powdered chalk or Talcum powder test 04. Which one is not quantitative test? a)Silver nitrate test b)Dolly test c)Bresle sample patch test d)Banana gauge test 39 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 05. 2013 ___________ can be used to detect the presence of oil or grease a) Copper sulphate b) Transparent Sticking Paper c) UV Light d) Bresle Sample Patch 06. Colour of Mill scale a) Dark Blue b) Dark Grey c) Black d) No Colour 07. Colour of Blasted Steel a) Dark Blue b) Dark Grey c) Black d) No Colour 08. Which test are measure the resistivity and conductivity? a) Bresle sample patch b) Salt contamination meters c) The potassium hexa-cyanoferrate test d) The wolf will born Test 09. Which test cannot detect hygroscopic salts? a) Potassiumferricyanide b) Silver nitrate c) Bresle sample patch d) Copper Sulphate 10. Which of the following is a quantitative test to detect chloride salts? a) Silver nitrate test b) Potassium test c) Bresle Sample test d) All of the above 40 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 11. 2013 Which of the following test to use marine environment? a) Silver nitrate test b) Potassium test c) Bresle Sample test d) copper sulphate test 12.Test to find out the presence of Mill scale in SA 3 finish? a) Silver nitrate test b) Merkoquant test c) Bresle sample test d) Copper sulphate solution 13. The test for soluble iron salts (ferrous) is important because a) these salts may be present because of active corrosion cells. b) these salts may be present because of improper manufacturing procedures at the steel rolling mill. c) these salts will mix with the coating and improve adhesion. d) these salts will leach out and create an acidic surface. 14. Which of the following are quantitative test? a) PotassiumHexa-cyanoferrate b) Copper sulphate c) Silver Nitrate Test d) Bresle Sample Patch 15. Which of the following is not a test for contaminants? a) Sellotape b) Banana gauge c) Talcum Powder d) Solvent 16. Why a painting inspector keep potassium ferry cyanide solution a) For checking mill scale b) For checking hygroscopic salts c) For detecting oil and grease d) For pickling process 41 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 17. 2013 Mill scale test done, which Blast grade is a) Sa1 b) Sa2 and Above c) Sa2½ and Above d) Sa3 18. ___________ can be used to detect the presence of moisture a) Copper sulphate solution b) Transparent Sticking Paper c) UV Light d) Talc powder 19. What type of test is used in photographic developer? a) Potassium hexa-cyanoferrate test b) Copper sulphate test c) Silver nitrate test d) Merkoquant test 20. The text for detecting soluble sulphates and chloride salts on the steel substrate is a) The Xylene salt solution b) The copper sulphate solution c) The potassiumhexa-cyanoferrate test d) The wolf Wilborn Test 42 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT CONSTITUENTS AND BASIC TECHNOLOGY # 4 Basic ingredients in Paints 1. Binder 2. Pigments and other additives 3. Solvent (where applicable) Paints are supplied as either liquids or solids in powder form. Binder; Binds the particles together and holds them in suspension Gives the paint its finish Makes the coating adhere in to the surface Gives flexibility to the paint film. Converts the coating to a solid dry film. Gives resistance to water, chemical, and abrasion. Pigment: Gives colour to the paint. Gives opacity to the paint. Gives resistance to acids, alkalis and light. Solvent: Forms the evaporative part of the drying process. Thins the paint so it can be applied easily. Washes out the brushes and equipment. Acts as a degreasing agent if approved. 43 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Types of Binder Acrylic Alkyd Asphaltic bitumen’s Cellulose resins Chlorinated rubber Emulsions Epoxies Ethyl and Methyl Silicates Phenolic resins Polyurethane’s Silicones Styrene Vinyl Natural oils Linseed Oil, Tung Oil (also known as China Wood Oil), Soya Oil, Tall Oil and Safflower Oil. Natural resins Copals, dammars and Coumarones Binder solvent combinations Solvent Common name Combination binder Strength Solvent Common name Combination binder water nil Emulsions PVC/PVA, Vinyl’s, Acrylics , Polyurethane Low → compare to aliphatic HC Strength Aliphatic Hydrocarbons White sprit Natural oil, natural resins , alkyds, phenolic Low → compare to aromatic HC Solvent Common name Combination binder Strength Aromatic Hydrocarbons Xylene Chlorinated rubber Low → compare to ketones Solvent Common name Combination binder Strength Ketones Acetone epoxy high→ compare to others Don’t use binder with strong solvent over a weak solvent. ( Existing coat ) 44 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Example: Chlorinated Rubber coated over an Alkyd would result in lifting, and wrinkling, Would it be acceptable practice to apply an Alkyd over Chlorinated Rubber? Advisable Would it be acceptable practice to apply Chlorinated Rubber over Phenolic? Not Advisable Would it be acceptable practice to apply Phenolic Resin over Chlorinated Rubber? Advisable Would it be acceptable practice to apply Epoxy over linseed oil base? Not Advisable Would it be acceptable practice to apply Chlorinated Rubber over Epoxy? Advisable Would it be acceptable practice to apply Epoxy Resin over Alkyd Resin? Not Advisable Polymers Liner Polymer Non-convertible or reversible material Thermoplastic Binders: Acrylics, Vinyl’s, Chlorinated Rubber, Asphalt and Coal Tars and Cellulosic Resins. Branched Polymer Non-reversible or convertible coatings Thermosetting. Binders: Natural Oils and Natural Resins, and isomers such as Alkyds and Phenolic. Cross linked Polymer Non-reversible or convertible coatings Thermosetting. Binder: Epoxies Oils Natural oils (vegetable oils) Linseed, castor, olive, coconut, soya and Tung oil. Saturated oil (Non-drying oil) cannot be used Ex: Castor oil, coconut oil, palm oil  Used only plasticisers Non-Saturated oil (Drying oil) can be used Ex: Linseed oil, Tung oil, china wood oil, olive oil, safflower oil.  Used as a binder 45 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER Long oil paint Medium oil paint Short oil paints more than 60% between 45 – 60% less than 45% 2013 slower drying / domestic applications, decorative materials oil to resin faster drying / shorter over coating time / steel work Pigments Rust inhibitive pigments - anti-corrosive a) Red lead * Red b) Calcium plumbate * White c) Coal tar * Black d) Zinc chromate * Yellow (Asterisk is toxic and restricted in use) e) Zinc phosphate (most commonly used)white. f) Barium metaborate g) Zinc phosphosilicate Yellow Metallic Pigments Zinc, Aluminium Opaque pigments Opaque pigments are given covering power, (opacity) and colour. Carbon Compound of Cobalt Compound of Chromium Compound of Iron Compound of Calcium Titanium Dioxide Black Blue Greens Yellows and Oranges Browns Reds and Yellows Reds and Yellows White Extender pigments Properties adhesion cohesion film strength durability 46 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER Materials used Clays Chalk Talcum Slate flour 2013 Kaolin, China clay Calcium carbonate Magnesium silicate Aluminium silicate Laminar pigments Plate like pigments are MIO (Micaceous Iron Oxide), Aluminium Flake, Glass Flake, Mica and Graphite PVC (Pigment Volume Concentration) CPVC, Critical Pigment Volume Concentration Below CPVC Too much of binder good gloss properties poor covering power (opacity) low cohesive strength Above CPVC  the film would be porous  low cohesive strength  Poor adhesion Near CPVC (good pigment to binder ratio)  lower gloss properties  greater cohesive strength  enough resin to encapsulate each particle  good resistance to water permeation. Solvents  Solvent strength  Evaporation rate  Flash point  Toxicity Anti-settling agents or Thixotropic agents  bentones and waxes 47 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Plasticisers A plasticizer is a paint reduces the brittleness of the dried film by allowing the molecules of the paint to move more easily. There by making it more plastic. Driers or catalyst Driers added to accelerate the drying process. Drier consists of compound of metal e.g. Napthenats of cobalt, zirconiµm Manganese. Octoic Acid and Naphthanic Acid Stabilisers Holds modern synthetic film formers intact and helps to prevent flocculation occurring in tin. Anti-skinning Methyl Ethyl Ketoxime. 48 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 A barrier type paint system, must be capable of providing? a) Good capacity b) Low permeability c) High permeability d) Low opacity 2. Example for paint involving barrier principle a) Zinc rich epoxy b) Zinc or Aluminium c) Urethane d) Rust inhibitive primers 3. Rust inhibitive primers operate by? a) Oxidation to protect the substrate b) Pigmentation c) Zinc phosphate d) Passivation 4. Cathodic protection using pigmentation? a) Rust inhibitive primers b) Zinc in Zinc rich primers c) Zinc phosphate d) Urethane 5. Paint is constructed of which 3 basic ingredients? a) Polymers, Epoxy, and Colourant b) Natural Oils, Dyes and Hardeners c) Oil, Color and extenders d) Binder, Solvent, Pigments & other Additives 6. Which term is not relate with binder a) VOC b) Film former c) Vehicle d) Non volatile 49 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Vehicle is a) pigments b) binder c) solvent d) MLC 8. Major considerations of a binder are: a) Flow properties or viscosity b) Resistance to chemical attack according to environment. c) Cohesive strength and Dialectric strength. d) All the above 8. Which is not a property of binder? a)Cohesive strength b) Leafing effect c)Resist water d) Hold pigments in suspension 9. Alcohol –Acid are derived a) Acrylic b) Alkyd c) Asphaltic bitumen d) Cellulose resins 10. The paint which prone chalking in top coat? a) The Epoxy b) The polyurethane’s c) The Chlorinated rubber d) The acrylic 11. Which of the following binders are reversible? a) Epoxy b) Urethane c) Chlorinated Rubber d) Silicone 50 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 12. 2013 Which of the following is not a commonly used binder? a) Epoxy b) Zinc c) Urethane d) Vinyl 13. Which of the following is natural oil? a) Dammar b) Alkyd c) Castrol d) Xylene 14. Which of the following is natural oil? a) Copals b) Amber c) Olive d) Dammars 15. Which of the following is not natural oil? a) Castor b) Amber c) Olive d) Linseed 16. Natural oils are a) Slow drying properties b) Hot drying oil c) Fast drying d) Non-drying oil 17. Natural oils are a) Linseed oil b) Tung oil c) Soya oil d) All the above 51 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 18. Natural oils are a) b) c) d) 19. China wood oil Tall oil Safflower oil All the above Natural oils are a) b) c) d) 20. 2013 Linseed oil Castor oil Coconut oil All the above China wood oils known as a) Linseed oil b) Tung oil c) Tall oil d) All the above 21. Which of the following is not a natural resin? a) Copal b) Amber c) Dammar d) Linseed 22. Examples for natural resin a) Amber, Laq b) Soya Oil, Tung Oil c) Bitumen , Coal tar d) Phenolic resin, Cellulosic resin 23. Examples for natural resin a) Copals b) Coumarones c) Dammars d) All the above 52 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 24. Oleoresinous known as a) b) c) d) 25. A mixture of oil and resin A mixture of oil and water A mixture of resin and acid A mixture of water and resin Natural resins are a) b) c) d) 26. 2013 Slow drying properties Hot drying oil Fast drying Semi-drying oil Hot drying oils are a) Phenolic resins b) polyurethanes c) Cellulose resins d) Styrene 27. Metal sprayed surfaces can be sealed with 28. a) Phenolics b) Silicones c) Cellulose Resins d) Vinyl Which one is convertible? a) CR b) Vinyl c) Natural Resin d) Emulsion 29. Which binder has no problem to overcoat on white spirit based binder? a) Alkyds b) Epoxy c) CR d) Natural Resin 53 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 30. 2013 Which solvent group is suitable for chlorinated rubber paints? a) Xylene b) Ketones c) Water d) White Spirit 31. Example for aliphatic HC solvents a) Water b) Xylene c) Turpentine d) Acetone 32. Which one is more suitable for CR paint to increase flexibility a) Alkyd resin b) Linseed oil c) Bentones d) Coconut oil 33. What will happen when applying strong solvent binder paint over a week solvent binder paint? a) Strong solvent will dissolved into weak solvent & cause of wrinkle or lifting b) Nothing happen c) Paint appearance more glossy d) Viscosity of paint will reduce 34. Which paint from below, can be applied over Phenolics? a) CR b) Epoxy c) Alkyd d) None of these 35. Which paint from below, can be applied over CR? a) Phonelics b) Epoxy c) Alkyd d) None of these 54 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 36. 2013 Which paint frombelow; can be applied over Natural resins? a) CR b) Acrylics c) Epoxy d) None of these 37. Which paint from below, cannot be applied over Alkyd? a) Acetone b) Epoxy c) Chlorinated Rubber d) None of these 38. Which paint from below, cannot be applied over CR? a) Phonelics b) Epoxy c) Alkyd d) None of these 39. Which one material is used on operating temperature? a) Epoxy b) Xylene c) Silicone d) China Clay 40. Cobwebs happened a) Brush application b) Spray application c) Roller application d) None of the above 41. Solution polymer as a a) Branched polymer b) Crossed link polymer c) Linear polymer d) None of the above 55 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 42. 2013 Backbone of the structure in form of the polymerisation a) Hydrogen b) Carbon c) Chlorine d) Nitrogen 43. Example for linear polymerisation? a) Acrylics b) Vinyl’s c) Chlorinated rubber d) All the above 44. Which is not a linear polymerisation? a) Asphalt b) Coal tars c) Cellulosic resins d) Alkyds 45. Which of the following are said to be reversible? a) Cross linked polymer b) Branched polymer c) Linear polymer d) Convertible coating 46. Which of the following are said to be non-convertible? a) Cross linked polymer b) Branched polymer c) Linear polymer d) Convertible coating 47. Which of the following are said to be thermoplastic? a) Cross linked polymer b) Branched polymer c) Linear polymer d) Convertible coating 56 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 48. 2013 Which of the following are said to be non-reversible? a) Branched polymer b) Linear polymer c) Convertible coating d) None of the above 49. Which of the following are said to be convertible? a) Branched polymer b) Linear polymer c) Convertible coating d) None of the above 50. Which of the following are said to be thermosetting? a) Branched polymer b) Linear polymer c) Convertible coating d) All of the above 51. Example for Branched polymerisation? a) Alkyds b) Isomers c) Phenolics d) All the above 52. Example for not Branched polymerisation? a) Natural oils b) Natural resins c) Phenolics d) Epoxies 53. Which of the following are said to be non-reversible? a)Linear polymer b) Cross linked polymer c) Convertible coating d) None of the above 57 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 54. 2013 Which of the following are said to be convertible? a)Linear polymer b) Cross linked polymer c) Convertible coating d) All of the above 55. Which of the following are said to be thermosetting? a)Linear polymer b) Cross linked polymer c) Convertible coating d) None of the above 56. Example for Cross linked polymerisation. a) Acrylics b) Alkyds c) Isomers d) Epoxy 57. By which polymerisation method a two pack epoxy paint dry a) Cross linked Polymer b) Branched Polymer c) Solution Polymer d) Linear Polymer 58. A paint drying by chemical reaction is said to be a) Linear polymer b) Convertible c) Non-convertible d) Reversible 59. Which polymerisation done in oxidation drying paints? a) linear b) Solution c) Branched d) Cross linked 58 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 60. 2013 Which one is saturated oil? a) Linseed oil b) Tung oil c) Palm oil d) China wood oil 61. Which one is unsaturated oil? a) Linseed oil b) Tung oil c) Olive oil d) All the above 62. A saturated oil can be used in binder for a) Fast drying b) Shelf life c) Flexibility d) Anti-skinning 63. Which one is rapid drying oil? a) Linseed oil b) Tung oil c)China wood oil d) All the above 64. Non- drying oils can be used in paints, for __________ a) Fast drying b) Slow drying c) Activate Chemical reaction d) Flexibility 65. Saturated oil as a a) Drying oil b) Semi drying oil c) Non-drying oil d) All the above 59 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 66. 2013 Which one is suitable for steel work? a) Short oil paint b) Medium oil paint c) Long Oil paint d) Full Oil paint 67. Which one is long oil paint? a) Less than 45% oil to resin b) Between 45-60% oil to resin c) More than 60% oil to resin d) None of the above 68. Which one is medium oil paint? a) Less than 45% oil to resin b) Between 45-60% oil to resin c) More than 60% oil to resin d) All of the above 69. Which one is short oil paint? a) Less than 45% oil to resin b) Between 45-60% oil to resin c) More than 60% oil to resin d) None of the above 70. Which one is suitable for domestic or decorative purpose? a) Short oil paint b) Medium oil paint c) Long Oil paint d) Full Oil paint 60 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 71. 2013 What are the properties of pigment? a) Cohesively strength b) Abrasive resistance c) Impermeability d) All the above 72. Pigment particle size is a) b) c) d) 73. Which one is a non-toxic pigment? a) b) c) d) 74. 75. Zinc Phosphate Zinc Chromate Read Lead Coal tar What is the color of most common used Rust inhibitive pigment? a) Grey b) Black c) Red d) White Pigment, which dissolve in a binder called a) b) c) d) 76. ¼ th micron ½ th micron 1/10 th micron 1/5 th micron Lacquer Dye Varnish Solute Rust inhibitive pigment are added to primer to protect the steel substrate by a) b) c) d) Passivation Evaporation Cathodic protection UV protection 61 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 77. 2013 Which one is give galvanic protection? a) Aluminum b) Zinc c) Glass flake d) China Clay 78. Which one is give solar protection? a) Aluminum b) Zinc c) Glass flake d) China Clay 79. An additive that gives a point material its hiding power? a) A plasticizer b) A thyrotrophic c) A drier d) A pigment 80. Properties of opaque pigment a) Hiding power b) Colour c) Opacity d) All the above 81. Which one is opaque pigment? a) Cobalt b) Chromium c) Calcium d) All the above 82. Which of the following is an opaque pigment? a) Graphite b) Compound of Chromium c) Zirconium Octoate d) Zinc Phosphate 62 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 83. 2013 Which one is Carbon? a) Blue b)Red c) Black d) Yellow 84. Which one is Titanium dioxide? a) Blue b)Red c) Black d) White 85. Which one cannot be used for yellow colourpaint? a)Chromium b)Cobalt c)Calcium d)Iron 86. Which is not a property of extender pigments? a) Increase Gloss b) Increase Adhesion c) Increase Cohesion d) Increase film strength 87. Which of the following is an extender? a) Calcium carbonate b) Magnesium Silicate c) Aluminium silicate d) All the above 88. Which of the following is an extender? a) Graphite b) Mica c) Glass Flake d) China Clay 63 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 89. 2013 Which one is not a laminar pigment? e) MIO f) Aluminium flake g) Glass flake h) China Clay 90. Which of the following is a laminar pigment? a) Graphite b) Mica c) Glass Flake d) All the above 91. PPM a) Parts per million b) Per parts million c) Parts per Micron d) None of the above 92. Which type of the following pigment is giving leaf effect? a) Opaque pigment b) Extender Pigment c) Laminar pigment d) All of the above 93. Specular Hematite is commonly called a) Mill scale b) Rust c) MIO d) Iron Sulphate 94. Theory of overleap when the coating dries a) Opaque pigment b) Extender Pigment c) Laminar pigment d) All of the above 64 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 95. 2013 Which of the following considered being a laminar pigment? a) Micaceous iron oxide b) Red Lead c) Coal tar d) Zinc phosphate 96. Which laminar pigment is best for UV protection? a)Aluminum Flake b)MIO c)Glass Flake d)Graphite 97. Which of the following is not a laminar pigment? a) Graphite b) Glass Flake c) Magnesium Silicate d) Mica 98. Expansion of CPVC a) Central pigment volume concentration b) Critical pigment volume concentration c) Control pigment volume concentration d) Critical paint volume concentration 99. Too much binder to solid ratio gives a) Good Opacity b) Good Gloss c) Cohesive Strength d) Porous Film 100. Greater cohesive strength a) Below CPVC b) Near CPVC c) Above CPVC d) All the above 65 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 101. 2013 Poor covering power a) Below CPVC b) Near CPVC c) Above CPVC d) All the above 102. What would be the main problem of a low CPVC? a) High opacity b) Permeability c) Low gloss d) Low opacity 103. Solvent are added to paint to reduce a) Viscosity b) Toxic c) Velocity d) Good gloss 104. Properties of solvent e) Strength f) Flash Point g) Evaporation rate h) All the above 105. The minimum temperature of the solvent at which the vapours given off are flammable if a source of ignition is introduced as a) Evaporation rate b) Flash Point c) Toxicity d) Solvent strength 106. Which property of a solvent is not best? a) Low evaporation rate b) Low toxicity c) Low flashpoint d) High evaporation rate 66 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 107. 2013 Toxicity measured in a)Mph b)Psi c) Ppm d)Cfm 108. Which of the following is an additive? a) Opaque pigments b) Rust inhibitive pigments c) Thickening agents d) Thinners 109. Which of the following are commonly used as anti-settling agents? a) Heavy metal salts b) Bentones & Waxes c) Saturated Oils d) Extender pigments 110. Thixotrops are of _____________ type a) Liquid b) Solid c) Gel d) Solvent 111. Anti-settling agents are a) Bentones b) Zirconium c) Castor Oil d) Cobalt 112. Anti-settling agents are allow a) low film thickness b) higher film thickness c) average film thickness d) All the above 67 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 113. 2013 Which additive used in paints to stop settlements a) Drying oils b) Non Drying oils c) Wax d) Anti-skinning agents 114. Basically plasticiser gives a) flexibility b) Thickness c) oxidation d) stop settlement 115. Which additive in the paint helps to prevent film cracking in use? a) A thyrotrophic b) A plasticizer c) A drier d) A Stabilizer 116. Example for drier additive? a) Bentones and waxes b) Castrol Oil c) Methyl ethyl Ketoxime d) Cobalt naphthantes 117. Octoates and Cobalt naphthantes are a) Plasticisers b) Anti-selling agents c) Driers d) Anti-skinning agents 118. Anti-oxidants are a) Plasticisers b) Anti-settling agents c) Driers d) Anti-skinningagents 68 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 119. 2013 Which one is used to retard the formation of skin in paint solution? a) Palm Oil b) Octoic Acid c) Methyl Ethyl Ketoxime d) Bentones 120. If more pigments added in a paint, then the surface should be ___________ a) Gloss b) Matt c) Grinning d) Fast Drying 121. Which one is not a property of binder? a) Adhesion b) Cohesion c) Evaporation d) Dielectric strength 122. When use Compound of Calcium pigment which type of colour produced? a) Red b) Black c) White d) Blue 123. The most widely used materials for pipeline coating are which of the following? a) Alkyd enamels b) Fusion-bonded epoxies c) Thermoset plastics d) High density latexes 124. Which term cannot be used for solid particles in binder? a) Aggregates b) Emulsion c) Degree of dispersion d) Fineness of grind 69 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 125. 2013 Which paint constituent can be found in powder form? a) The Binders b) The Solvents c) The Driers d) The Anti-skinning agent 126. A paint said to have a good opacity will a) Have low permeability b) Have good hiding power c) Have a low CPVC d) Have a low minimum gloss value 127. Which is not property of binder? a) Cohesive Strength b) Leafing Effect c) Resist Water d) Hold Pigments in suspension 128. Which additive in the paint helps to prevent film cracking in use? a) A thixotropic b) A plasticizer c) A drier d) A Extender 129. Magnesium silicate is a) Clays b) Chalk c) Talcum d) Slate flour 130. Aluminium silicate is a) Clays b) Chalk c) Talcum d) Slate flour 70 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 131. 2013 Calcium carbonate is a) Clays b) Chalk c) Talcum d) Slate flour 132. Magnesium silicate is a) Rust Inhibitive pigment b) Opaque pigment c) Extender pigment d) Laminar Pigment 71 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 SOLUTIONS AND DISPERSIONS # 5 1. A solution is a) The resultant liquid of a polymerization event b) The resultant liquid after dispersing a liquid another liquid c) The resultant liquid of a solid suspension d) The resultant liquid after dissolving a material in a solvent 2. Paint is a _________________ a)Solution b)Solute c)Solvent d) Dispersion 3. Example for suspension a) Water Based Emulsion b) Oil Mixed With Water c) Salt Water d) Pigmented paint 4. Example for Emulsion a) Water with water b) Oil Mixed With Water c) Salt Water d) Pigmented paint 72 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 DRYING AND CURING OF PAINT FILMS #6 1. Solvent Evaporation  linear polymer  reversible or non-convertible  Chlorinated rubber, vinyl’s, acrylics, cellulosic materials  Thermoplastic 2.Oxidation  Branched polymer  convertible or non-reversible  Alkyds, Phenolics, natural oils and resins 3.Chemical Curing 2. Coalescence Thermosetting(Coatings which do not melt after the application of heat are known as thermo set coatings)  application of heat  convertible or non-reversible  materials like epoxy and urethane Thermoplastic(Paints which melt when heat is applied are known as thermoplastic coatings)     application of heat linear polymer reversible or non-convertible using material Polyethylene and Polypropylene Name the Paints & give their drying and curing methods Emulsion coalescence Alkyd Solvent evaporation followed by oxidation Chlorinated rubber Solvent evaporation Two pack epoxy Solvent evaporation followed by chemical curing Fusion bonded epoxy Heat cured 73 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1 2013 Which is not a drying method? a) Coalescence b) Air Drying c) Stoving d) Force Drying 2. Ambient temperatures refers to a) Coalescence b) Air Drying c) Stoving d) Force Drying 3. Which term is used when heat applied over 65 oC for Drying of Paint? a) Metal Spray b) Air Drying c) Stoving d) Forced Drying 4. Which of the following is not a drying mechanism? a) Coalescence b) Oxidation c) Stove drying d) Chemical curing 5. Chlorinated Rubber will dry a) Oxidation b) Chemical curing c) Solvent Evaporation d) None of the above 6. Example for Solvent evaporation drying a) Epoxy b) Alkyd c) Acrylic d) Urethane 74 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Solvent evaporation dryingis a) Branched polymer b) Linear polymer c) Crossed link polymer d) None of the above 8. Paint drying is solvent evaporation in a) Convertible b) Reversible c) Non-reversible d) Cross linked 9. A single pack epoxy paint dry by a) Coalescence b) Chemical curing c) Oxidation d) Solvent evaporation 10. A Multi component paint dried by a) Solvent evaporation b) Oxidation c) Chemical reaction d) Coalescence 11. A typical pot life of paint used in BGas specification would be. a) 20-30 minutes b) 12-24 hours c) 6-8 hours d) 3-7 days 12. A typical induction period of paint used in BGas specification would be. a) 20-30 minutes b) 12-24 hours c) 6-8 hours d) 3-7 days 75 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 Pot life mentioned in a) Material data sheet b) Job sheet c) Paint inspection sheet d) None of the above 14. Stand time or lead time are called a) Pot life b) Induction time c) Drying time d) None of the above 15. Two pack material curing agents a) Alkyds and Acrylics b) Tulane and Xylene c) Amides and Amines d) All of the above 13. Pot life is a)The period of the length of time after mixing which the paint should be before use b) The period of time after mixing which the paint must be used c) Physically join together d) None of the above 14. Chemically curing materials are a) Convertible b) Non-convertible c) Reversible d) All of the above 15. Endothermic reactions are a) Container will warm up and giving heat b) Container will cooling and taking in heat c) Container removes d) All of the above 76 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT SYSTEMS #7 Functions of Primers, Midcoat, & Finish Coats. Primer- To provide Maximum lasting adhesion to a substrate for the next paint layer and corrosion. retard Midcoat- Barrier to prevent the passage of Water. Finish Coat – Gives Final appearance, degree of gloss & colour. Resistance to abrasion, UV rays, Weather .To aids the flow from the surface of the metal. Mordent solution, t wash, wash primer = etch primer Aluminium etch primer – poly vinyl butyl 77 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 The BGas specification for site application of paint system is a) BGC/PS/PA10 b) BGC/PS/CW5 c) BGC/PS/PA8 d) BS 7079 2. Which painting system contain with rust inhibitive pigment and anti-corrosive pigment a) Mid coat b) Top coat c) Second coat d) Primer coat 3. PVB Primers mainly used for a) All ferrous substrates b) Aluminium c) Galvanising d) Steel Substrates 4. Second Coat also known as a) Primer b) Mid coat c) Top coat d) Itching primers 5. The function of a finish coat is mainly to provide. a) Impermeability and adhesion b) Aesthetic properties and water shedding c) Cathodic protection and passivation d) Increased thickness at low cost 6. Which product should be used to damp or moist surfaces? a) Water borne acrylic b) Thermally Sprayed Aluminium c) Moisture Curing Polyurethane d) Micaceous Iron oxide 78 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Which one is thermoplastic? a) Poly ethylene b) Poly urethane c) Epoxy d) Natural Resin 8. In powder coating, to complete the curegenerally takes a) Three seconds b) Less than three minutes c) More than an hour d) Eight hours 9. Thick steel sections like powder are sprayed onto a a) Preheated substrate b) Post heated substrate c) Low temperature d) None of the above 10. Thin steel sections like powder are sprayed onto a a) Preheated substrate b) Post heated substrate c) Low temperature d) None of the above 11. Powder coating types may include which of the following? a) Alkyds b) Epoxies c) Organic Zinc d) Latexes 12. Paint system: Properties and performance requirement, a detailed in PA9, paint testing is mostly carried out according to which BS? a) BS 729 b) BS 5493 c) BS 3900 d) BS 6072 79 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 AGI gas pipeline temperature is a) Much cooler than ambient temperature b) Hot than ambient temperature c) Cooler than ambient temperature d) None of the above 14. A zinc phosphate pigmented primer would be a a) Passivation system b) Galvanic protection c) Bimetallic principle d) All the above 15. Organic Zinc rich epoxy would be provide a a) Passivation system b) Barrier system c) Galvanic protection d) All the above 80 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 WATER BORNE COATINGS# 8 1. Which paint is not suitable for EPA? a) Water borne b) High volume solid c) Solvent Based d) Solvent free 2. Which paint is not suitable for EPA? a) Water borne b) High volume solid c) Low volume solid d) Solvent free 3. 60% of Volume Solids paint using a hydrocarbon solvent will release a) 400 cc b) 450 cc c) 200 cc d) 350 cc 4. Hydrocarbon known as a) not harmful to environment, the ozone layer or to mankind b) to be harmful to the environment, the ozone layer, and human life c) In periods of high humidity drying will be retarded d) None of the above 81 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT MANUFACTURE# 9 Direct charge mill: which take and mix all the raw ingredients together. Example: Ball mill, Attritor mill, High speed dispersers. 2. Pre-mix mills; Take the ingredients which have been pre mixed to a rough consistency and refine this mixture to high quality paint. E.g. Bead mill (pear or sand mill), Colloid mill, Tipple roll mill, single roll mill 82 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 What are stages of paint manufacturing system? a) Premixing b) Dispersing mill c) Letdown process 2. d) All the above Which one is not a direct charge mill? a)Ball mill b)Attritor Mill c)Bead mill d) Sand mill 3. Which one is a direct charge mill? a) Sand Mill b) Single roll mill c) Triple roll mill d) Attritor Mill 4. What type of machinery is used to produce large production runs of popularpaints? a) Triple Roll mill b) Colloid Mill c) Ball Mill d) Sand Mill 5. Which paint mill produce expensive materials? a) Triple roll mill b) Single roll mill c) Sand mill d) Ball mill 6. High speed dissolver mill is another name for a) High speed disperser b) Pearl mill c) Colloid mill d) Attritor Mill 83 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 High speed stone mill is another name for e) High speed disperser f) Pearl mill g) Colloid mill h) Attritor Mill 8. Which mill widely used for producing thick paint? a) Ball Mill b) Pearl Mill c) Triple Roll Mill d) Single Roll Mill 9. What type of equipment is used to produce mastics, putties and fillers? a) Sand mill b) Triple roll mill c) Colloid mill d) Attritor mill 10. Bead mill or Pearl mill known as a) Ball Mill b) Sand mill c) Triple Roll Mill d) Single Roll Mill 11. What type of equipment is used to produce silver and glitters? a) Sand mill b) Triple roll mill c) Single roll mill d) Attritor mill 84 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 TESTING OF PAINTS FOR PROPERTIES AND PERFORMANCE # 10 Paint density weight per unit of volume formula: Density = Weight volume units for density are grams per cc . Density cup capacity 100 cc Other names referring to the same cup are: 1 Relative density cup 2 Specific gravity cup 3 Weight per litre cup 4 Weight per gallon cup 5 Pyknometer Density cup are using to 2 pack material has been mixed in the correct proportions. Hegman grind gauge  also called a fineness of grind gauge  is used to measure the degree of dispersion of paint.  Its use only manufacture area. Viscosity Viscosity is defined as being a fluid resistance to flow. Types of viscosity 1. Rotational Viscometers 2. Flow Viscometers (For measuring viscosity) 85 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 1. Rotational viscometers Dynamic viscosity Kinematic viscosity is measured using a Krebs Stormer Viscometer 2. Flow viscometers (Flow cups) Different types of flow cups  Zahn and Frikmar, used for hot fluids,  Ford, ISO and DIN used for ambient temperature materials. Thixotropic paints cannot be measured using a flow cup Viscosity is low add paint Viscosity is high add thinner ( solvent ) The thixotropic paints the viscosity can be measured by a rotation viscometer or another type of viscometer paints. Factors which cause poor adhesion of Paint system; a. b. c. d. e. f. g. Surface preparation is poor. Surface containing detrimental contaminants Overpowered Burnished areas, Surface Profile very less Over thinning of Paints Paint applied over rust or unprepared areas Not proportionately mixing of Two Pack Paints. Preparation of Two pack Paints for Use. a. Plastic paper to be used underneath of paint tins, b. All dust to be removed. c. Lid to be opened without damaging of the rim. d. All sediments at the bottom of the tin are to be mixed by stirring. e. Solvents or Catalysts to be added slowly and gradually and mixed thoroughly in paint. f. Up to 5 Liters Paint may be mixed by Manual, above 5 liters by Mechanical mixing to get homogeneity. g. Tin should be covered without Opening. 86 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 Transco Specification PA9 Specifies a) New and Maintenance painting at work and site for AGI b) Paint Properties and Performance c) Internal coating of steel small bore pipe d) Preparation of steel substrate before application of paint 2. The temperature at which a vapour from a solvent will ignite in the presence of a source of ignition is a) Upper explosive limit b) Dew point c) Flash point d) Relative humidity 3. Closed Abel cup used to: a) Flash point Determination b) Viscosity determination c) Density determination d) All the above 4. How to heat the Abel cup a) Direct b) Indirect c) Induction d) None of the above 5. How to identify the flash point temperature? a) Blue flame flashes b) Orange flame flashes c) Red flame flashes d) Yellow flame flashes 6. Which flame signifies that the flash point temperature has been exceeded? a) Blue flame flashes b) Orange flame flashes c) Red flame flashes d) Yellow flame flashes 87 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Density defined a) Weight per unit of volume b) Metric per unit of volume c) Volume divided by weight d) All the above 8. Density unit are a) Weight per unit of volume b) Metric per unit of volume c) Gram per cc d) All the above 9. Capacity of Density cup a) 200 cc b) 300 cc c) 1000 cc d) 100 cc 10. Density cup made by a) Aluminium alloy b) Stainless steel c) Nickel d) Iron 11. What is pyknometer? a) Opacity testing equipment b) Whirling Hygrometer c) Density Cup d) Wind speed measuring equipment 12. Which of the following is not another name for Density Cub? a) Pyknometer b) Psychrometer c) Weight per gallon cup d) Weight per litre cup 88 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 Which of the following is another name for Density Cub? a) Relative density cup b) Specific gravity cup c) Pyknometer d) All the above 14. Mixing of two packs can be calculated by a) Pyknometer b)Closed Abel Cup c)Pyro meter d)Crypto meter 15. What is the name of the equipment used to determine particle aggregate size? a) Beck koller b) Hegman gauge c) Wolfe – wilborne d) Kerbe Stormer 16. What is another name of the Hegman grind gauge? a) Kerbe Stormer b) Fineness of grind gauge c) Eccentric wheel d) PIG 17. How to determine grinding level on paint using Hegman grind gauge? a) 5-10 aggregative protect from the surface in 3 mm gap b) 5-10 aggregative protect from the surface in 2 mm gap c) 50-100 aggregative protect from the surface in 3 mm gap d) 50-100 aggregative protect from the surface in 2 mm gap 18. Viscosity is defined as a) A fluid’s resistance to flow b) A liquid thickness c) The temperature at which a liquid will flow d) The point at which a liquid becomes solid 89 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 19. 2013 In which temperature Density, Viscosity etc. tests of Paints done a) 20 ºC ± 0.5 ºC b) 37 ºC ± 0.5 ºC c) 100 ºC ± 0.5 ºC d) Temperature not affected 20. When temperature increases,__________ a) Viscosity increases b) Viscosity decreases c) Viscosity Stable d) Drying time increases 21. A Rotational Viscometer measures: a) Direct Viscosity b) Centrifugal Viscosity c) Kinematic Viscosity d) Dynamic Viscosity 22. The viscosity of water is said to be approximately: a) 1 g/cc b) 1 poise c) 1 stoke d) 1 centi-poise 23. What will be the unit of viscosity of a thixotropic paint? a)Second b)Centipoises c) Ns/m2 d) Stoke 25. __________ is not a unit of viscosity a) Stoke b) Poise c) Littre d) Second 90 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 26. 2013 Stroboscope checks a) Rotation b) Polarity c) Potential d) Aggregate count 27. Ford flow cup nozzle is made of a)Aluminum alloy b) Stainless steel c)Aircraft alloy d)Tungsten carbide 28. _____________ flow cup can be used to check viscosity of hot paint a) Ford b) Zahn c) ISO d) DIN 29. Ford Flow cup made of ___________ a) Stainless Steel b) Aircraft alloy c) Aluminium d) Glass Reinforced Plastic 30. What is the name of vessel used to determine the viscosity of hot fluids, as per BGas specifications? a) Ford Flow cup No.4 b) Zahn Cup c) Abel cup d) Pyknometer 31. What is size of hole in Ford Flow Cup? a) 2 mm b) 3 mm c) 4 mm d) 5 mm 91 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 32. 2013 A Rotothinner measured by: a) Direct Viscosity b) Centrifugal Viscosity c) Kinematic Viscosity d) Dynamic Viscosity 33. Capacity of Ford Flow cup a) 100 cc b) 50 cc c) 200 cc d) 500 cc 34. Viscosity for a paint is determine to a) Flow of paint b) Thinners added to paint over and above recommended c) Measure the degree of dispersion of paint d) Measuring density of paint 35. Density calculated to a) Flow of paint b) Thinners added to paint over and above recommended c) Measure the degree of dispersion of paint d) Two pack material has been mixed in the correct proportions 36. Which information is not available in MDS? a) Flash point b) Dew point c) VS% d) Recommended Thinner 37. When two pack material used, calculated density valve 1.29 gm/cc, but achieved test result in 1.35 gm/cc which is more dense? a) Base b) Activator c) Thinner d) Ratio to be changed 92 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 38. 2013 If 7.5 Liters Paint weighs 9.75 Kg, Relative Density is ______ a) 13.0 gm/cc b) 13.0gm c) 1.30 gm/cc d) 1.3 39. If Paint in a density cup weighs 135gm, Relative Density is ______ a) 135 b) 13.5gm/cc c) 1.35 d) 1.35 gm/cc 40. MDS shows a two pack paint density is 1.35 gm/cc, when the density check completed it shows the density as 1.25.Which one is true a) Base Part is High b) Activator Part is High c) Mix ratio on MDS is incorrect d) Activator Part is Low 41. If 11 Litres Paint Weighs 18 Kg then density = a) 1.8 gm/cm b) 1.6 gm/cm c) 1.1 gm/cc d) 1.6 gm/cc 42. Fineness of grind is a term used for a) Premixing b) Aggregate size c) Profile roughness d) PVC 43. What is the specified temperature at which a Flash Point Determination test must be carried out? a) 20ºC b) Upto 450ºc c) There is no specific temperature d) 25ºC seawater 93 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 44. 2013 Which of the following can be used to measure viscosity? a) A Pyknometer b) An aspirated psychrometer c) An Abel closed cup d) A Zahn cup 45. Relative density units are a) gm/cc b) gm c) kg/cc d) None 46. Density of water a) 1 gm/cc b) 2 gm/cc c) gm d) None of the above 47. Dynamic viscosity a) Centi b) Centi-poise c) Poise d) Stoke 48. Kinematic viscosity a) Centi b) Centi-poise c) Poise d) Stoke 49. Looking at the stated angle is the paint where the surface will change from gloss to matt a) 5-10 aggregates break through the surface of the paint b) Measure the degree of dispersion of paint c) Aggregative are present in all pigmented paints d) None of the above 94 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 50. 2013 High viscosity is a) High resistance to flow b) Not run easily c) Conversely d) All the above 51. Viscosity is a very important property for paint: it affects a) Manufacturing process b) Application process c) Levelingproperties d) All the above 52. A device used to measure the degree of dispersion of paint is called a) A gloss meter b) A crypto meter c) A paint inspector gauge d) A Hegman grind gauge 53. Approx. viscosity of paint is a) 1 Centi-poise b) 1 stoke c) 2.4 Ns/m2 d) 1.2gm/cc Density value is 1.29gm/cc  calculate value is 1.35 gm/cc So that, Base is high Density value is 1.35gm/cc  calculate value is 1.29 gm/cc  So that, Activator is high 95 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 FILM THICKNESSES # 11 WFTs Measurement Types Eccentric wheel or comb gauges. Disposable plastic gauges  supplied in small boxes containing several hundred Stainless Steel gauges  supplied in sets of four in a leather wallet Destructive test gauges for DFT 1. Paint inspectors gauge (PIG) 2. Ericson Test Drill and Saberg Thickness Drill Nondestructive test gauges for DFT Electronic and Magnetic. 1. Magnetic Horseshoe gauge 2. Banana gauge 3. Tinsley pencil or pull of gauge Abrasion resistance Equipment for testing paint films → Ericson, Taber and Gardner Tested for film hardness Buchholz Indentor & the Sward Hardness Rocker for hard coatings is the Koenig Albert. Types of cabinets test Humidity cabinets Salt spray cabinets Water soak tests Temperature cycling Prohesion testing Drying and curing tests Ballotini test Beck Koller Stylus test (BK trying time recorder) 96 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Other tests for drying 1. 2. 3. 4. 5. 6. Mechanical thumb test Pencil scratch test (Wolff-Wilborn) Mechanical scratch test Gold leaf test Thumbnail test Opacity Adhesion V cut, Cross hatch Test, Dolly Test Hydraulic adhesion test equipment ( HATE ) Paint FILM TESTING a. Salt Spray Box- Marine Condition b. Water Soak Test- Film Permeability c. Tropical Box - High Humid Environment. d. Temperature Cycling- Film Flexibility. e. Cold Check Testing- Low temperature contraction cracking 97 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 Advantage of eccentric wheel for WFT measurement is a) Correct DFT can be calculated from result b) Permanent record c) No other method for curved surface d) Can be used for metal spray method 2. How to use Eccentric wheel on a pipe a)Perpendicularly b)Circumferentially c)Longitudinally d)Not possible 3. Which type of Comb gauge is not available? a) Square b) Circle c) Triangular d) Rectangular 4. Biscuit Gauge is another name for a) Hegman’s grind gauge b) Surface Comparator c) Banana Gauge d) Comb Gauge 5. How to use comb gauge on a pipe a)Perpendicularly b)Circumferentially c)Longitudinally d)Not possible 6. If a comb gauge show 120-140 µm, then the actual Dft is a) 120 µm b) 130µm c) 140 µm d) 120 / 140 µm 98 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Graticule scale is a part of a) PIG b) Hegman Grind Gauge c) Eccentric Wheel d) Tough type Pfund Crypto meter 8. Why an inspector use PIG Gauge a) When substrate is non-ferromagnetic and coating is non-Ferro magnetic b) When substrate is non-ferromagnetic and coating is Ferro magnetic c) When substrate is Ferro magnetic and coating is Ferro magnetic d) When substrate is ferromagnetic and coating is non-Ferro magnetic 9. A Non Destructive test can be done a) When substrate contain MIO b) When substrate is non-ferromagnetic and coating is Ferro magnetic c) When substrate is Ferro magnetic and coating is Ferro magnetic d) When substrate is ferromagnetic and coating is non-Ferro magnetic 10. A Destructive test can be done a) Ericson test drill b) PIG c) Saberg thickness drill d) All the above 11. A Destructive test can be done a) Ericson test drill b) Pencil scratch test c) Ballotini teat d) Dolly test 12. Sometime Tinsley pencil gauge is called a) Paint Inspector Gauge b) Foreman’s gauge c) Banana gauge d) Horseshoe gauge 99 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 A Banana gauge works on which principle a) Magnetic resistance b) Conductive resistance c) Tension reluctance d) Viscosity relativity 14. Using the correct calibration shim, a banana gauge can be calibrated one a) Blasted surface material b) Painted surfaces c) Steel with a covering of mill scale d) All of the above 15. Test for adhesion resistance on paint film a) Ericson b) Taber c) Gardner d) All of the above 16. Test for hard coatings a) dolly test b) Banana gauge c) Koenig Albert d) All of the above 17. What diameter is the conical mandrel, which is used in the flexibility test? a) 8 mm to 25 mm b) 12 mm to 18 mm c) 5 mm to 50 mm d) 3 mm to 37 mm 18. Accelerated test are a) Water soak test b) Prohesion test c) Salt spry cabinets d) All of the above 100 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 19. 2013 Humidity cabinets conditions are a) Humidity is very high at 95% and elevated temperatures up to 55oC b) Humidity is very high at 90% and elevated temperatures up to 55oC c) Humidity is very low at 95% and elevated temperatures up to 55oC d) All of the above 20. In paint testing, why is temperature cycling carried out? a) To check for water absorption. b) To check flexibility c) To check contradiction cracking d) To prove the service life of the coating system 21. What result will get by Temperature Cycling test? a) Cracking b) Blistering c) Chalking d) Discoloration 22. Which of the following do not a drying test? a) Ballotini test b) Beck – Koller stylus test c) Wolff wilborn test d) Cross hatch test 23. Which of the following is not a drying test? a) Koening Albert b) Beck Koller c) Mechanical Thumb d) Ballotni 24. Which drying test involves the use of smell glass beads? a) Wolf wilborne b) Ballotini c) Koenig Albert d) Beck Koller 101 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 25. 2013 What is the name given to the drying test involving the use of glass beads? a) Wolf Wilbrone b) Taber c) Ballotini d) Erichsson 26. Gold leaf test is used for _________ a) Adhesion b) Drying c) Residual tack d) Dust detection 27. Degree of Hardness of paint a) Mechanical thump test b) Wolff Wilborn Test c) Gold Leaf test d) Prohesion 28. The Pencil Hardness Tests is used to determine which of the following? a) Scratch hardness of a coating b) Adhesion of a coating c) Abrasion resistance of a coating d) Indentation hardness of a coating 29. Wet film opacity determined by a) Cryptometer b) Wolff Wilborn Test c) Psychrometer d) Prohesion 30. Cryptometer known as a) Hycrometer b) PfundCryptometer c) Psychrometer d) Prohesion 102 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 31. 2013 What factors can affect Gloss? a) Resin type, Solvent type, paint application technique b) Refractive index, pigment colour, DFT c) Particle size, CPVC, resin type, angle of light incidence d) Pigment size, resin type, paint colour 32. Which factor does not affect gloss of a paint film? a) CPVC b) Flash Point c) Particle Size d) Solvent type 33. What is area for adhesion failure within a paint system? a) Primer to substrate failure b) Inter coat adhesion c) Cohesive failure d) All of the above 34. Which type of test used craft knife? a) Pencil scratch test b) V cut Test or cross hatch test c) Dolly test d) None of the above 35. Which of the following tests would be performed to determine the adhesion of a coating? a) Pendulum rocker b) Pull off Tape c) Falling sand d) Taber abraser 36. HATE is an abbreviation of what? a) Heat Affected Tension Expansivity b) Hydrogen Arc Treatment Effect c) Hydraulic Adhesion Test Equipment d) Humidity Affected Temperature Evaluation 103 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 37. 2013 Which of the following is not an adhesion test? a) Cross Hatch b) Gold Leaf c) HATE d) Dolly test 38. Which of the following is not an adhesion test? a) Dolly test b) Cross hatch c) Kerbsstormer d) HATE 39. Dolly test used to check _____________ a)Hardness b)Flexibility c)DFT d)Adhesion 40. Pull of Adhesion is a term associated with a) Tinsley pencil b) Banana Gauge c) HATE d) Dolly Test 41. If the required DFT is 50µm, then the particle size in the paint should be _____ a)50µm b)Above 50µm c)Below 50µm d)All the above 42. VS.%relate to a)Volatile b)Non volatile c)Total Paint volume d)Activator 104 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 43. 2013 What is the volume of paint required to cover a circular area of 15 meters radius, if the material has WFT of 176µm a) 76.38 L b) 124.34 L c) 214.34 L d) 31.08 L 44. What WFT should be measured, if a coating of 88 µm DFT is required with a 66% VS paint? a) 158 m b) 75 m c) 58 m d) 133 m 45. What is the actual DFT, if banana gauge shows 335µm when checked on galvanising? a) 335µm b) 265µm c) 235µm d) 435µm 46. Reflectometer measures _________ a) Aggregate Size b) Agglomerates Percentage c) Gloss d) Colour 47. Which of the following would not affect the degree of Gloss? a) Surface profile b) Critical Pigment Volume Concentration c) Solvent type d) Degree of dispersion 48 Dry film thickness assessment of a point film containing MIO can be carried out a) Using a Tinsley film thickness gauge b) By using Calibrated eccentric wheel c) By reading taken using the paint inspections gauge d) By using a banana Gauge 105 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 49. 2013 Prior to use, the gauge used to determine DFT must be calibrated, a) Using sample plate, with a paint coating of known thickness b) On the prepared surface, before paint application c) Monthly, by authorized validation Centre d) In the presence of the site engineer 50. What DFT should be achievable if the paint with the volµme solid of 54% is ….to WFT of 135µm? a) 65 µm b) 72.9 µm c) 75 µm d) 82.9 µm 51. A paint said to have good opacity will; a) Have low permeability b) Have good hiding power c) Have a low CPVC d) Have a low minimum gloss value 52. Minimum WFT and DFT recommendations for paint applications, and advice on the addition Of thinners etc., can be found: a) On the label of the paint containers b)In the project specification c) On the manufacturer product data sheet d) In BS 7079 part A 53. DFT measured using Banana gauge can be carried out on the following: a) Zinc galvanised surface which have been painted b)Painted Aluminium substrate c) Any paint containing MIO pigments d) In BS 7079 part A 54. For the WFT measured of a non-ferrous coating on a carbon steel pipe, which of the following methods would be acceptable? a) Banana gauge b)Eccentric wheel used longitudinally c) Comb gauge used circumferentially d) Eccentric wheel used circumferentially 106 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 55. 2013 A paint said to have possess low opacity will; a) Have low permeability b) Have low hiding power c) Have a low CPVC d) Have a low minimum gloss value 56. The equipment used to measure the hiding ability of paint is called: a) A Reflectometer b)A grind gauge c) A psychrometer d) A crypto meter 57. DFT value can be determined by a) Calculations b) Destructive test gauges c) Nondestructive test gauges d) All the above 58. Why using plastic shim on DFT measured? a) Magnetically insulated b) Correct film thickness c) Nondestructive test gauges d) All the above 59. What type of test using for paint elasticity? a) Impact test b) Cupper test c) Accelerated Test d) Conical mandrel 60. What type of test using for assessed for paint damage? a) Impact test b) Cupper test c) Accelerated Test d) Conical mandrel 107 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 61. 2013 Which test will be done only for paint evaporation? a) Impact test b) Flashpoint Test c) Volatile / Non volatile d) Conical mandrel 62. Which paints cannot be measured by flow cup? a) Thixotropic paints b) Two pack material c)Single pack material d) All the above 63. WFTs can be measured by using a) Eccentric wheel b) Comb gauges c) PIG d) A and B 64. The Electro Magnetic Induction is suitable for a) Ferro-magnetic substrates b)Non ferro-magnetic substrates c) A and B d) None of the above 65. The EddyCurrent is suitable for a) Ferro-magnetic substrates b) Non-ferro-magnetic substrates c) A and B d) None of the above 66. The Magnetic Coating Thickness gauge a) Horseshoe gauge b) Tinsley pencil c) PIG d) Banana gauge 108 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 67. 2013 Solvent Evaporation Time, The SolGelTransition,Surface Drying Time and Final Dry Time are given a) Ballotini Test b) Mechanical thumb test c) BK drying recorders d) Gold leaf test 109 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 SPECIFIED COATING CONDITIONS # 12 Whirling Hygro meter is called Aspirated Hygrometer or Psychrometer Steel Temperature – Limpet gauge, pyrometer Air Temperature – Dry Bulb thermometer 1. Dew point is defined as a) The temperature at which water vapour in the air condense b) The temperature at which paint can be applied c) The temperature of the steel d) The temperature at which cross linking will commence 2. Relative Humidity is defined as a) The amount of water which is in the air at 25°C, in seawater, b) The amount of water present in the air, expressed as a percentage of water that could be in the air that temperature. c) The temperature at which water vapour will condense d) Dry bulb temperature measures against Wet Bulb temperature. 3. A Whirling Hydrometer is also known as a) A PfundCryptometer b) A psychrometer c) A spinning thermometer d) A rotational viscometer 4. What is the recommended speed at which a Whirling Hygrometer must travel through the air? a) 4 meters per sec b) 2 mm per second c) 5 km / hr d) 100 meters per minute 110 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 5. 2013 When using a Whirling Hygrometer, the wet bulb temperature a) Should always be read last b) Will always be above the steel temperature c) Should always be read first d) Should not be connected to the wick 6. The BGas specified conditions for site painting system is a) Maximum wind sped 4 m/ sec, Relative humidity not less than 95% b) Maximum 90% relative humidity, dew points less than 3ºC of steel temp. c) As per BGC/PS/PA8 d) Minimum 27ºC Maximum 95% 7. The BGas specified conditions for site painting system is a) Maximum wind sped 4 m/ sec, Relative humidity not less than 95% b) Maximum 90% relative humidity, dew points above 3ºC of steel temp. c) Not more than 90% relative humidity d) Minimum 27ºC Maximum 95% 8. Steel and Air temperature is always a) more than 5oC b) less than 5oC c) Within 3oC d) More than 3oC 9. Air temperature can be calculated by a) Hygro meter b) Thermo stat c) Limpet gauge d) Strobo scope 10. The following is not information of Daily report sheet a) Dew point b) Relative Humidity c) Relative Density d) Air Temperature 111 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 11. 2013 Steel temperature can be measured by a) Psychro meter b) Limpet Gauge c) Thermo meter d) Horseshoe gauge 12. Pyro meter is an instrument to check a) Adhesion b) Hardness c) Steel Temp d) Density 13. How many seconds frame should be rotated at site? a) 12-15 seconds b) 20-25 seconds c) 30-40 seconds d) 10-20 seconds 14. How many times frame should be rotated at site? a) Only one time b) 2 times c) 10 times d) Many times as is necessary 15. Two consecutive spins the reading should be a) Above 0.2oC b) Within 0.2oC c) below 0.2oC d) Above 0.3oC 112 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 16. 2013 During rain, snow, or high winds”. When these conditions do not prevail” or similar, to allow coating to continue using special products as a a) Modern sensible paints b) A Tentative paints c) A thixotropic paints d) None of the above 17. Solvent evaporates very slowly at low temperatures, when a) the air or metal temperature is down to within 3oC above the dew point temperature b) the air or metal temperature is below 5oC c) the relative humidity is more than 90% d) None of the above 18. When the relative humidity is more than 90%, using paints a) Epoxy high build b) Thermally spray Aluminium c) Moisture curing polyurethane d) None of the above 19. The air temperature and dew point temperature, and wet bulb temperature on the whirling hygrometer, When are all the same value a) RH 100 % b) RH 90% c) RH 85% d) RH 35% 113 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 CATHODIC PROTECTION 13 1. External surface of tank cannot have a) Electrolytic b) Cathodic protection c) Copper/Copper Sulphatehalf-cell electrode d) Bimetallic 2. Internal surface of tank canhave a) Electrolytic b) Cathodic protection c) Copper/Copper Sulphatehalf-cell electrode d) Bimetallic 3. When Cathodic protection is used to protect a pipeline, coatings are applied to a) Improve the effectiveness of protection. b) Improve the passage of current flow. c) Make the pipe easier to inspect. d) Increase the voltage needed for the CP system. 4. ___________ used to detect the voltage in impressed current system a) National Grid b) Transformer Rectifier c) Copper/Copper Sulphate half-cell electrode d) Sodium Chloride 5. Impressed current system used to a) Protect long length of pipelines a distance of 10 miles b) Protect short length of pipelines a distance of 1 miles c) Protect long length of pipelines a distance of 100 miles d) Protect short length of pipelines a distance of 10 miles 114 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 6. 2013 National Grid connected through a) pipeline b) Transformer Rectifier c) Copper wire d) Galvanic system 7. Positive side of the Transformer rectifier connectedto a) pipeline b) cathode system c) ground bed d) copper wire 8. Pipe lines are making a) anode system b) cathode system c) A and B d) None of the above 9. The voltage required operating the ICCP system? a) 230V to 240 V b) 10KV to 50 KV c) 10V to 50V d) 10mV 50mV 10. Copper/Copper sulphates half-cell electrode is used to a) Monitor CP Voltage b) Supply current for CP c) Detect Mill scale d) Rectify AC to DC 11. Electrical circuit of the corrosion reaction is the evolvement of hydrogen gas from a) The Anode b) The Cathode c) Electrolyte d) All the above 115 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 12. 2013 Which solution is used for Cathodic disbondment test? a) Slightly acidic liquid b) Salt water c) Alkaline liquid d) Distilled water 13. Galvanic Anode System are called a) Sacrificial Anodes Systems b) Impressed Current Systems c) Cathodic disbondment d) None of the above 14. A voltmeter is connected to the stud and to a) The copper/copper sulphate half-cell b) Transformer Rectifier c) Copper wire d) Galvanic system 116 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 HOLIDAY/PINHOLE DETECTION # 14 1. When carrying out holiday detection using the sponge tester, what can we add to the water? a) Salt b) Detergent c) Xylene d) Inhibitor 2. In FBE coatings greater than 20 thou thickness, holidays are detected using which of the following? a) Wet sponge holiday detector b) Low voltage holiday detector c) High voltage holiday detector d) Low voltage DC holiday detector 3. In FBE coatings less than 500µm thickness, holidays are detected using which of the following? a) Wet sponge pinhole detector b) Low voltage holiday detector c) High voltage holiday detector d) Low voltage DC holiday detector 4. What voltage settings are commonly used for sponge test holiday detection? a) 5 Kv to 15 KV b) 15 KvMaximum c) 9v to 90 v d) 110v to 240v 5. What voltage settings are DFT of less than or equal to 300µm? a) 5 Kv to 15 KV b) 671/2to 90 v c) 9v d) 9v to 90 v 6. What voltage settings are DFTs of 300-500µm? a) 5 Kv to 15 KV b) 671/2 to90 v c) 9v to 90 v d) 110v to 240v 117 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT APPLICATION # 15 1. Basic paint application methods are a) spray b) Brushing c) Roller d) All the above 2. What type of application used to welds, internal corners, bolts, rivets? a) spray b) Brushing c) Roller d) All the above 3. Which correct equipment used for applying a Stripe Coat? a) Gravity Cup b) Roller c) Paint Brush 4. d) Spray application Which paint application cannot use in industry as per PA10? a) Brush b) Roller c) Airless spray 5. d) Electro-static spray What are the spray applications? a) Conventional Spray b) Airless Spray c) Electric-static Spray d) All the above 6. What are the Conventional spray systems? a) b) c) d) Suction Spray Gravity Spray Remote pressure spot Spray All the above 118 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 Most tips are used in airless spray system RAC? a) Tip life is to be increased b) Costs can be kept down c) Blockages can be cleaned d) All of the above 8. Paint spray tip sizes, pressure recommendation are generally found a) On the point container b) In the project specification c) On the product data sheet d) In the British Standards 10. Which application greatly reduce pinholes? a) Brush b) Spray c) Aerosol d) Roller 11. Spray tip with adjustable aperture size known as a) Carbide b) Venturi c) Titan d) Taber 12. If an airless spray pump ratio 35;1 delivery pressure 2800.howmuch the inlet pressure a) 100psi b) 90psi c) 80psi d) 70psi 13. The main difference between Airless and conventional spray is a) Conventional spray gives better deposition rate b) Conventional spray gives less waste c) Airless spray gives better quality finish d) Conventional spray gives better atomisation 119 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 14. 2013 How atomisation is achieved in conventional spray a) Two air channels outside the nozzle b) Air pressure applied before nozzle c) Paint forced at high pressure d) Hydraulic pressure 15. If metal spray applied on a thin steel plate, a) Plate should not be heated b) Plate should be preheated c) Plate should be post heated d) Cannot be applied 16. In the electrostatic spray painting process, the component must be a) Positively charged b) Negatively charged c) 9 Volts DC d) 15 Kv DC 17. Which application method provides uniform film thickness? a) Stripe coat b) Airless Spray c) Conventional spray d) Electrostatic spray 18. In Electrostatic spray, the thickness of paint film is controlled by a) Time used to spray b) Delivery Pressure c) Orifice Size d) Voltage 19. Which of the following is often applied by electrostatic spray? a) Zinc-rich epoxy b) Powdered epoxy c) Coal tar enamel d) Epoxy grout 120 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 20. 2013 Which of the following is a disadvantage of electrostatic spray? a) Poor coverage b) Excessive overspray c) Generally only one coat can be applied d) Non-uniform film thickness 21. Which paint application have “Insulation” effect a) Airless Spray b) Remote Pressure pot c) Dip coating d) Electrostatic spray 22. Padding refers to what? a) Protection for pipes during transport & storage b) Protective clothing for TSA application c) A paint application method d) Material used to soak spillages 23. Shearing Action produced by application of a) Roller b) Brush c) Spray d) Padding 24. The relevant pain application information for any particular paint, product, such as paint spray, tip sizes, pressure recommendation, etc are generally found a) On the paint containers b) In the project specification c) On the Product data sheet d) In the British Standards 25. A common system for applying Hot metal spray coating is: a) Conventional spray gravity cup b) A gun containing fuel gas, oxygen and compressed air c) High pressure airless spray system d) Plural component pumps and gun 121 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 26. 2013 Round headed brushes called a) Flat brush b) Round brush c) Tar brush d) All the above 122 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 METAL COATINGS # 16 1. Nuts and Bolts can be coated by a) Calorising b) Galvanising c) Sheradising d) Anodising 2. At which temperature Aluminium melts a) 100 oC b) 240 oC c) 425 oC d) 625 oC 3. At which temperature zinc melts a) 100 oC b) 240 oC c) 425 oC d) 625 oC 4. Mostly offshore and onshore using metal coats a) Sheradising b) Calorising c) Anodising d) Galvanising 5. To be done by immersing a component in a mix of fine sand and Aluminium powder and heating a) Sheradising b) Calorising c) Anodising d) Galvanising 123 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 6. 2013 An electrolytic method of coating which results in the formation of a dense oxide a) Sheradising b) Calorising c) Anodising d) Galvanising 7. Hot metal spraying are using temperature at a) 625oC b) 540oC c) 425oC d) 450oC 8. The use of sealer to improve the performance and prolong the coating life with which of the following coating systems a) Polysiloxane b) Polyurethane c) Thermal metal spraying d) Electrostatic spraying 9. Thermally Sprayed Aluminium is not normally applied by which system? a) Electric arc Spray b) Sheradising c) Wire & Pistol d) Electro – plating 124 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 COATING FAULTS #17 1. Addition of thixotropic helps to avoid _________ a) Blistering b) Sagging c) Cracking d) Flaking 2. Which coating fault occurs when over thinning paint? a)Pinholes b)Run c)Spot rusting d)Hair cracking 3. Which fault relate to Peeling? a)Orange peel b)Flaking c)Wrinkling d)Cracking 4. Which fault can be avoided when bitumen removed from paint system? a)Bittiness b)Blistering c)Cracking d)Bleeding 5. Chalking occurs due to a)Coating age b)Weathering c)Shelf life problem d)Hygroscopic salts 6. Which fault happens when over apply zinc silicate a)Sagging b)Run c)Mud cracking d)Holidays 125 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 A coating fault which resembles holidays a) Checking b) Cratering c) Crazing d) Cissing 8. Over thickness of Zinc silicate cause a) Sagging b) Mud Cracking c) Curtaining d) Cohesive failure 9. Ropiness is fault look like a) Roller Stiple b) Rivelling c) Brush Marks d) Blisters 10. Which one is not a Paint Fault? a) Grinning through b) Efflorescence c) Cracking d) Bittiness 11. Paint defect which their appearance is like a citrus of fruits skin. a) Wrinkle b) Shagging c) Fish Eye d) Orange peel 12. Which coating fault will look like discoloration? a) b) c) d) Chalking Bleeding Cissing Curtaining 126 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 13. 2013 Efflorescence is a) a weak surface layer of water-rich cement. b) An oil reaction with alkalinity to make a soap. c) Moisture passing through the concrete and carrying soluble concrete salts d) Ice crystals on the surface 14. Where bleeding is evident on a pipe which was previously coated with coal tar, the staining would be which colour? a) Black b) Brown c) Yellow d) Red 15. Lifting of coating material from surface is ______ a)Wrinkling b)Lifting c) Flaking d)Mud cracking 16. Paint defect which name is Fish Eye always causes by a) Over Thickness b) Substrate contains with oil c) To much thinner d) Using wrong mixing solvent 17. Where paint particles fall outside the spray pattern, resulting in a dry, flat, pebbled appearance, this is known as a) Orange peel – flocculation b) Dry spray-over spray c) Floatation – flocculation d) overspray-floatation 18. Inclusion, either airborne or from the paint itself? a) Grinning through b) Efflorescence c) Cracking d) Bittiness 127 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 19. 2013 Degradation of a binder due to disruptive factors in the environment is ______ a)Wrinkling b)Lifting c) Chalking d)Mud cracking 20. Gas, liquid or crystals are filled with ______ a)Wrinkling b) Blisters c) Flaking d)Bittiness 21. Where bleeding is evident on a pipe which was previously coated with bitµmen’s, the staining would be which colour? a) Black b) Brown c) Yellow d) Red 22. The presence of particles of gel, flocculated material or foreign matter in a coating material, or projecting from the surface of a film. a) Grinning through b) Efflorescence c) Cracking d) Bittiness 23. Sometimes forms on the floss film of a coating causing loss of gloss and dulling of colour a) Efflorescence b) Cracking c) Bittiness d) Bloom 128 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 24. 2013 Cracking that comprises of fine cracks, which may not penetrate the top coat, they occur erratically and at random a) Efflorescence b) Cracking c) Bittiness d) Hair cracking 25. cracking that comprises of fine cracks, which do not penetrate the top coat and are distributed over the surface giving the semblance of a small pattern. a) Cracking b) Hair cracking c) Checking d) Mud cracking 26. Cracking that resembles checking but the cracks are deeper and broader. a) Crazing b) Hair cracking c) Checking d) Mud cracking 27. A drastic type of crazing producing a pattern resembling the hide of a a) Crazing b) Hair cracking c) Crocodile d) Mud cracking 28. Where there is a complete absence of coating materials on random areas of the substrate a) Ropiness b) Holidays c) Lifting d) Mud cracking 129 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 COLOUR # 18 Hue  basic colour red, yellow, green and blue  Clockwise, red→ yellow →blue Brightness  amount of lightness or darkness of the colour  degree of reflectivity Saturation  How vivid colour appears  difference of a colours  Lower saturation, greyer the colour Black and white and the greys in between are called “achromatic” colours Other colours called “chromatic” Colours clock also called three dimensional model of a helix.  The Munsell colour system Having five basic colours→ Red, Yellow, Green, Blue and Purple  The BS 4800 colour system    Lightness is identified by capital letters A to E A is Maximum lightness E is minimum lightness  BS 5252, framework for colour co-ordination for building purposes 1. What is BS 4800 specifies a) Colour co-ordination b) Specification of abrasive size sieves c) Methods of test for paints d) Glossary of paint and related terms 2. What is 3 attributes which make up the colour of a paint? a) White, black and colour b) Hue, Brightness and saturation c) Red, Yellow and Blue d) Contrast, Density, and Definition 130 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 3. 2013 Which of the following are primary colours? a) Blue Yellow and Green b) Red Green and white c) Red White and blue d) Red Yellow and Blue 4. In colour attributes, Brightness also referred by the term a) Chroma b) Intensity c) Value d) Weight 5. Chroma, Intensity, Weight are used a) Hue b) Brightness c) Saturation d) All the above 6. Hue refers to what? a) Amount of lightness or darkness b) Basic colour c) How vivid colour appears d) All the above 7. Saturation refers to what? a) Amount of lightness or darkness b) Basic colour c) How vivid colour appears d) All the above 8. Black White Grey is a) Vivid Colour b) Achromatic c) Chroma d) Basic colour 131 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 9. 2013 Which of the following is not a system for paint color classification? a) BS 4800 b) BS 5252 c) Munsell d) BGC/PS/CW5 10. Which of the following is pipe colour coding? a) BS 4800 b) BS 5252 c) BS 1710 d) BGC/PS/CW5 11. How is the brightness of colour identified in BS 4800? a) By Numbers 0-24 b) By Numbers 01-56 c) By letter A-E d) By letter E-M 12. RAL Number represents a) Batch Number b) Thinner Code c) Colour Code d) Solvent Code 13. How is the Hue of colour identified in BS 4800? a) By Numbers 0-24 b) By Numbers 01-56 c) By letter A-E d) By letter E-M 14. How is the saturation of colour identified in BS 4800? a) By Numbers 0-24 b) By Numbers 01-56 c) By letter A-E d) By letter E-M 132 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 HEALTH AND SAFETY # 19 OEL examples of some solvents Solvent Name Aromatics Aliphatic Chlorinated hydrocarbons Alcohols Ketones Esters 1. Xylene Toluene White Sprit Hexane Trichloroethane Trichloroethylene Methanol Ethanol Acetone Methyl ethyl ketone Methyl acetate Ethyl acetate OEL in ppm 100 50 100 500 350ab 100ac 200 1000 750 200 200 400 COSHH abbreviation a) Control of Substance Hazardous to Health b) Central of Substance Hazardous to Health c) Control of Substance Hazardous to Help d) Control of Substance Health to Help 2. Which warning symbol represents Toxic a) Answer: B 3. b. c. d. This is the hazard warning symbol for a) Toxic or Very Toxic b) Harmful or irritant c) Corrosive d) Explosive 133 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 4. 2013 This is the hazard warning symbol for a) Toxic or Very Toxic b) Harmful or irritant c) Corrosive d) Explosive 5. Who is having duty of Safety on a Working site (or) which person on site is responsible for site safety? e) HSE (Health & safety executive) f) Contractor g) Engineer h) Employees 6. The document issued by the HSE listing all known harmful substances, is a) COSHH b) SI 1657 c) EH40 d) IGE SR 21 7. RAQ is an abbreviation of what? a) Required Adherence Quota b) Repair Area qualification c) Required Air Quantity d) Required Acceptance Quality 8. Every depression is RAQ a) 100 ppm b) 500 rpm c) 100 cc d) 500 cc 134 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 9. 2013 In dragger tube Number specified is n=5, what is RAQ e) 500 ppm f) 5 rpm g) 500 cfm h) 500 cc 10. After depressions the colour change is from white to a) red b) brown c) reddish brown d) black 11. Which would be considered to be the most toxic? a) Acetone b) Xylene c) Ethanol d) Toluene 12. When testing for Xylene using a Dragger Bellows, the crystals will charge colour. a) Orange to Black b) White to Red/Brown c) White to Green d) White to Black 13. Expansion for PPM a) Parts per million b) Pounds per million c) Parts per mill d) None of the above 135 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 DUTIES OF AN INSPECTOR # 20 As inspector what do you consider as your main responsibilities? a) To asses the condition of substrate prior to treatment b) To inspect surface preparation in accordance with BS 7099: measure and record amplitude once in daily. c) To ensure material used on site are to client’s specification. d) Relative humidity, dew point, air temperature, metal temperature to be checked and recorded at least four times daily. e) Wet and dry film thickness to be checked and recorded frequent intervals. f) To witness and and inspect application of each coat and inspect completed paint system in accordance with the clients specification and good paint inspection practice. g) To submit daily and weekly reports recoding all the relevant information as required by the client. Copies to be retained by inspector. 1. Which of the following is regarded as the duty of a panting Inspector? a) Record Dew point, Relative Humidity & Monitor addition of Thinners b) Check surface profile, cleanliness and make choice of paint color c) Control of Abrasive type, blasting pressure and selection of personnel d) Control of paint storage, appearance of finish, and painter’s timesheets 136 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 LIST OF SPECIFICATION AND BS NumberS 21 1. Internal coating of pipeline comes under a) PA7 b) PA8 c) PA9 d) PA10 2. Methods of test for paints. a) BS410 b) BS3900 c) BS7079 d) PA10 3. Schedule of paint colours for building purposes. a) BS4800 b) BS3900 c) BS7079 d) PA10 4. Preparation of steel substrates before application of paints and related products a) BS4800 b) BS3900 c) BS7079 d) PA10 5. Visual assessment of surface cleanliness a) BS4800 b) BS3900 c) BS7079 d) BS 7079 Group A 137 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 6. 2013 Methods of assessment of surface cleanliness a) BS4800 b) BS 7079 Group B c) BS7079 d) BS 7079 Group A 7. Surface roughness characteristics of blast cleaned steel substrates a) BS4800 b) BS 7079 Group B c) BS7079 Group C d) BS 7079 Group A 8. Method of Surface Preparations a) BS 7079 Group D b) BS 7079 Group B c) BS7079 Group C d) BS 7079 Group A 9. Paint properties and performance requirement a) PA7 b) PA8 c) PA9 d) PA10 10. The British standard for painting inspection? a) BS 3900 b) IGE SR 21 c) BS 7079 d) ISO 8501 11. Indentor test can be used to check? a) b) c) d) EPA ( Environment Protect Act) IGE / TD / 05 BS 7079 IGE SR 21 138 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 QUALITY #22 Manufacturer’s data sheet; Product description, Recommended use, Technical information, Application data, Condition during application, Drying and curing time, Recommended painting system, Storage and packing, Health and safety Product Data Sheet --- Information’s Service temperature Colour Code Volume Solid Spreading Rate Flash Point Specific gravity VOC Mixing Rating Paint Application method Thinner Pot life Nozzle orifice Nozzle pressure DFT, WFT Issued Date 139 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT APPLICATION (PA 10) # 23 The Condition for final surface preparation:When conditions in the working area are such that metal surfaces are moist, damp or wet, final preparation shall not be carried out. - Any surface preparation procedure or method of cleaning shall not be allowed to contaminate wet paint film. - Equipment used shall be of non-sparking type. - Electrically operated tools are not permitted. - Power tools operated by compressed air shall have oil trap vapour trap fitted to the compressed air lines. - All contaminants shall be removed by means of an approved solvent. - Allage and mould growth when in evidence shall be treated with biocide agent and left for at least 24 hours in order that the biocide can kill the spores. It shall then remove by scrubbing with stiff bristles brushes and clean water or by use of high pressure water wash. - All surfaces shall normally be dry before painting commences. Condition for application of paint as per PA 10 :Paint shall normally applied when a) the RH % is less than 90% b) the air and metal temperature is at least 3 deg C above the DP c) Ambient and substrate temperature should not be below the set out by the paint manufacturer for particular paint. d) Paint shall not normally apply when conditions in the working zone are such that the working surface becomes moist or damp during the painting operations. e) Painting equipment’s shall be used in accordance with the paint manufacturer’s recommendations. f) All paint shall be applied in order to produce a firmly adhering continuous film, free from misses, runs tears, sag etc. g) Stripe coating shall be carried out to welds edges etc in order to achieve a full paint film thickness as specified. 140 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 h) All painted areas must be thoroughly dry before being over coated and any contamination of the paint film should be removed before further coats are applied. i) Final coating shall be free from significant visible imperfection. Health and safety 1) What document state health and safety at work? H.A.S.W.A. : - hazardous and safety at work act1974. 2) What year was the health and safety act passed? The control of substances hazardous to health regulations 1988 come in to force 1 st October 1989(COSHH regulations). 4) How long would be records of examinations monitoring test for five years and 30 years for identifiable employees. 5) EPA – environmental protection act waste material disposal What additional information you should need when maintenance painting a pipeline without removing the existing coating The following additional information to be recorded is. - Nature of the existing system must be established to decide the type of preparation to be commenced. - Amount of surface contamination. - Extent of corrosion. - Extent of paint breaks down. - Compatibility of the existing system with the new system. if not compatible select the appropriate tie coat. - In service environmental condition. 141 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 TECHNICAL SPECIFICATION FOR NEW AND MAINTENANCE PAINTING AT WORKSAND SITEFORABOVEGROUND PIPELINEANDPLANT INSTALLATIONS This Specification specifies procedures for painting the surfaces of all types of ferrous and non-ferrous metal engineering components. PA -10use in the following areas not suitable a) below ground (buried) b) offshore installations c) internal coatings of pipes d) stove enamel coatings surface preparations and methods of application to be used in the particular applications. Only the relevant SPAs need to be taken into account for a particular painting system. Site safety requirements All work carried out on the site shall comply with good safe working practice and the specific conditions of a Permit to Work where issued on an operational site      Safe working areas - proper use and erection of scaffolding, ladders, etc Safety requirements associated with abrasive blast cleaning Identification of coating materials - with reference to any associated hazards such as toxicity,flammability, etc. Compliance with fire regulations - storing of combustible materials Safe handling of coating materials and safety precautions on site Environmental requirements      storage and disposal of paint waste materials shall be in accordance with the current environmental requirements. Contractor shall be alerted of the possible toxic nature of the deposits paint debris the appropriate action and Certification required for their disposal. Purposes of this specification compliant coating: a coating which complies with the requirements of the Environmental Protection Act1990. Contractor: the Contractor's personal representatives, successors and permitted assigns. damp surfaces: surfaces on which water is not readily detectable but of which the temperature is below the dew point. dew point: the temperature at which the vapour pressure of the water vapour in the air is equal to the saturation vapour pressure over water. 142 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 fully weathered galvanizing: a galvanized steel surface on which a cohesive oxide layer has formed by natural weathering. The surface will normally be dull and lacking in metallic sheen. hot duty surfaces: metal surfaces on the assembly that will attain a temperature of 100 0 C or above during use. short term protection: typically two years to three years life. medium term protection: protection typically lasting five years. long term protection: protection typically lasting ten years. moist surfaces: surfaces from which standing water and droplets have been removed but on which there is a noticeable film of water. pot-life: the Maximum time during which a coating material supplied as separate components should be used after they have been mixed together. Transco: Transco - a part of BG plc. T-wash: a non-proprietary material used as a primer or pretreatment for zinc metal surfaces. Earliest stages of painting or re-painting   cost effective method(s) of surface preparation. cost effective paint system(s) to give the required service life Maintenance/re-painting a) The existing paint system. b) The extent of breakdown and corrosion. c) The in-service environmental conditions. d) The nature and extent of any surface contamination. General conditions for Contractor       Clear information about contract, specification of job Specified for SPAs Method of Surface preparations Painting system to be applied Programme of work must be prepared and will get permission from Engineer Listed of Paints in separate items on the contract document Inspection All painting shall be subject to inspection and no deviation from the requirements of this specification will be permitted, unless previously agreed with the Engineer. Independent inspection shall not in any way relieve the Contractor of his responsibilities under the terms or conditions of the contract. Detailed records of the surface preparation and paint system applied to any given structure shall be kept together with the results of the inspection and testing carried out. 143 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Test areas       Contractor may be required to prepare and paint test areas to correct quality of surface preparation satisfactory film thickness finish to the paint film is obtained. equipment and techniques used for the accepted surface preparation application of paint to the test areas shall be representative of those to be used for the main painting work. Access equipment    particular importance that reference is made to Appendix B Until approval has been given by the Engineer, fixed access equipment shall be left in position Any movable equipment required (ladders, towers, etc.) shall remain on site and be readily available for use. Equipment to be protected and masked before preparation and painting Masked are        fire protection equipment weld end preparations atmosphere sensing heads spray heads vents on control equipment flame traps lubrication points and nameplates Contractor shall be responsible for removing all masking materials Paints containing metallic zinc     Special care shall be taken to ensure that paints containing metallic zinc zinc-rich paints are not allowed to contaminate stainless steel for reason is cause embrittlement not be applied within 75 mm of weld end preparation to avoid vapourisation of zinc during welding Preparation of surfaces Conditions for final surface preparation       metal surfaces are moist or damp, final surfacepreparation shall not normally be carried out. surface preparation or cleaning method shall not be allowed to contaminate wetpaint films. Equipment used on sitein sparks less. Electrically operated tools shall not normally be permitted on site. Power tools operated by compressed air shall have oil and vapour traps fitted to the compressed air lines. Before surface preparation shall be removed by washing with an appropriate solvent. Biocidal Agent All algae and mould growth shall be treated with a biocidal agent and left for a minimum of 24 hours. It shallthen be removed by scrubbing with stiff bristle brushes and clean water or by use of high pressure water washing. Abrasive blast cleaning methods   Safety requirements associated with abrasive blast cleaning shall comply with IGE/SR/21. The type of abrasive used of not less than 30 μm and not greater than 75 μm 144 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER        2013 The profile shall be measured using Testex replica tape Non-metallic abrasives shall be of a silica free type Air for blasting shall be clean, dry and oil free Abrasive used in an open blast system shall be of the expendable typeand re -use not permitted. closed blasting system (e.g. vacuum blasting) may also be re-use of abrasives shall be permitted the size of the abrasive. Wet blast systems shall be used for the removal of lead-based paint. wet blasting, dry blasting shall be carried out to remove any subsequent flash rusting. The scrapers shall be of the type having a carbide tip   using a needle gun to ensure that the profile of the surface shall not exceed 100 μm needle gun are rogue peaks shall be removed  weld fluxand spatter shall be removed prior to painting operations large areas consideration shall be given to the use of low pressure water detergent washing prior to painting.  Storage of paints    conditions recommended by the paint manufacturer accordancewith the appropriate fire regulations On operational sites approved by theEngineer. Pot life of paint time referred after mixing paint used time. APPLICATION OF PAINT Relative Hµmidity in the work zone is less than 90% / air and metal temperatures are at least 3 o C above the dew point. Paint shall not normally be applied moist or damp during the painting operation. Stripe coating shall be necessary to achieve the required dry film thickness (DFT) at edges and to ensure coverage of weld profiles. MEASUREMENT OF PAINT THICKNESS paint thickness shall be accordance with procedures in BS 3900: Part C5 Quality control thickness measurements of paint films containing micaceous iron oxide (MIO) pigment Over coating ( paint film) measured by wet film thickness gauge (e.g. comb gauge). The wet film thickness needed to achieve the specified DFT differs from paint to paint. 145 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Treatment of contaminated paint film Contaminations Treatment Loose paint particles, rust, debris and other atmospheric contamination or salt deposition Wash down using soft nylon brushes and clean water. Drythoroughly Oil or grease Brush and wash with an appropriate solvent then scrub with a 2%solution of detergent in clean water. Wash with clean water and drythoroughly Foreign materials (e.g. shot or grit) embedded in the paint film Re-prepare the affected areas and re-apply the complete paintingsystem SPECIFIC PAINTING APPLICATIONS (SPAs) NEW AND MAINTENANCE PAINTING FOR LONG TERM PROTECTION OF INSTALLATIONS AND COMPONENTS( SPA1) SPA1 applies to the painting at works or site of new installations and components and to site maintenance painting of carbon steel surfaces operating below 100 0 C. SPA1 shall apply to: a) Part painting of new components at works b) Completion at works or site of components part painted at works c) Site painting of uncoated and unsuitably coated surfaces d) Site maintenance painting Before preparation and painting commences, those surfaces not to be painted shall be masked Each coat of paint shall be of a contrasting colour to the previous coat PREPARATION FOR PAINTING OF ------ UNCOATED OR UNSUITABLY COATED SURFACESAT WORKS OR SITE ----- TABLE SPA1a All mill scale, corrosion products and, where applicable, unsuitable existing paint and coatings shall be removed from the surface. The surface finish at the time of painting shall be equivalent to BS 7079 Sa 2 ½ quality and have a profile within the range of 30 μm and 75 μm . This shall normally be achieved by blast cleaning. 146 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 UNCOATED OR UNSUITABLY COATED SURFACES ------ TABLE SPA1a Operation Number 1 2 Subject of operation Mask areas Blast clean Comments BS 7079 Sa 2½ quality; Maximum profile 75 µm Relevant clauses in PA10 Equipment protect Abrasive blast cleaning 3 Clean all surfaces Immediately prior to primer application Surface preparation of weld area 4 Apply primer Dry film thickness dependent upon system (see Table SPA1e) Application paint & measurements 5 Apply Micaceous iron oxide Dry film thickness 75 µmminimum Over coat PREPARATION OF PAINTED SURFACES WITH LIMITED COATING DAMAGE Procedure (see also Table SPA1b) shall be applied where slight damage to the factorycoating has occurred duringtransport and/or storage. Methodof cleaning shall be by mechanical wire brushing. The edges of the existing remaining coating shall be feathered. COATING DAMAGE ------- TABLE SPA1b Operation Number 1 2 3 Subject of operation Mask areas Mechanically wire brush and feather edges Clean all surfaces 4 5 Comments BS 7079 St3 quality as minimum Relevant clauses in PA10 Equipment protect Manual mechanical methods Immediately prior to primer application Surface preparation of weld area Apply primer Dry film thickness dependent upon system (see Table SPA1e) Application paint & measurements Apply Micaceous iron oxide Dry film thickness 75 µmminimum Over coat 147 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 FINAL COATING On completion of painting must be the final coating. One coat of finish shall be applied, by brushing or spraying to a DFT specified. The final coating shall have an acceptable uniform appearance and shall be free from cosmetic defects FINAL COAT -------TABLE Operation Number 1 Subject of operation Clean all surfaces 2 3 SPA 1c Comments Relevant clauses in PA10 Immediately prior to primer application Surface preparation of weld area and final coat Apply undercoat Dry film thickness dependent upon system (see Table SPA1e) Application paint & measurements and under coat Apply finish Dry film thickness dependant upon system Finish coat MAINTENANCE PAINTING -------TABLE SPA 1d APPLICATION OF PAINT TO PREPARED SURFACES For paint applied at works the preferred system is a high solids solvent based epoxy primer and epoxy MIO Coat One coat of primer shall be applied, by brushing or spraying as appropriate, to all prepared exposed metal within 4 h of metal preparation and before any rust blooming or contamination of the surface occurs  The paint shall overlap onto any existing coating by at least 100 mm.  Over coating is normally carried out within three months of the application of the MIO coat and in Accordance PREFERRED SYSTEMS ---- TABLESPA1e Stage 1 2 3 4 Total Compliant solvent-based High build epoxy Aluminium primer Epoxy Micaceous iron oxide High build epoxy undercoat Epoxy or polyester acrylic finish Minimum dry film thickness (µm) 75 75 75 40 265 148 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER Stage 1 2 3 4 Total Water-borne acrylic Primer Micaceous Undercoat Finish coat 2013 Minimum dry film thickness (µm) 50 75 50 50 225 NEW AND MAINTENANCE PAINTING FOR INDOOR USE OR SHORT TERM PROTECTION(SPA2) SPA2 applies to new and maintenance painting for indoor use or short term protection of carbon steel surfaces operating below 100oC  Surfaces shall be prepared as requirementsof BS 7079 St 3 quality as a minimum TABLE SPA2a - Operation chart for new painting for INDOOR USE & SHORT TERM PROTECTION TABLE SPA 2b - Operation chart for maintenance painting for INDOOR USE & SHORT TERM PROTECTION PAINTING OF METAL SURFACES FOR HOT DUTIES --- (SPA3) SPA3 applies to the painting of surfaces which are likely to operate at 100 0 C or above.   Areas where the operating temperature of the metal surface is likely to reach, but not exceed, 149 0 C shall be painted. Areas where the operating temperature of the metal surface is likely to exceed 149 0 C and 340 0 C shall be Protected FOR DUTIES AT TEMPERATURES FROM 100 0 C TO 149 0 C (TABLE SPA3a)        All surfaces not to be painted shall be masked all surface contaminants shall be removed by washing Mechanical cleaning in accordance ( blast cleaning ) Applying Aluminium pigmented epoxy or urethane primer Paint shall be applied within four hours of blast cleaning but before any rust blooming or contamination occurs over coating times, further coats of primer shall be applied to achieve a total minimum DFT of 100 μm for urethane or 250 μm for the epoxy Heat resistant paints are normally pigmented with Aluminium flake, therefore a finish to a designated colour may not be possible 149 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER Operation Number 1 2 3 Subject of operation Mask Remove surface contamination Blast clean 4 Apply primer 5 Apply additional coat of primer Comments 2013 Relevant clauses in PA10 Equipment protect / masked Surface preparation by washing BS 7079 Sa2 ½ quality, Maximum profile 75 µm Dry film thickness depends on primer used Dry film thickness depends on primer used Preparation for painting Aluminium pigmented epoxy or urethane primer Over coat minimum DFT of 100 μm for urethane or 250 μm for the epoxy FOR DUTIES AT TEMPERATURES FROM150 0 C TO340 0 C (TABLE SPA3b)     Thermally sprayed Aluminium (TSA) shall be applied to prepared surfaces in accordance with BS EN 22063 and/or BS 2569: Part 2. TSA is deemed to be impractical due to operational restraints for this high temperature. Use of paint systems based on inorganic zinc silicate or polysiloxane primers –manufacturer recommendations Withthe use of inorganic zinc silicate, mud cracking of the coating may result–manufacturer recommendations Operation Number 1 2 3 Subject of operation Mask Remove surface contamination Blast clean 4 Apply system 1 TSA 2 Inorganic Zinc silicate polysiloxane Inorganic primers 3 Comments Relevant clauses in PA10 Equipment protect / masked Surface preparation by washing BS 7079 Sa3quality, Maximum profile 75 µm System chosen from below lists Abrasive blast cleaning / Preparation for painting inorganic zinc silicate or polysiloxane primers Optional systems accordance with BS EN 22063 and/or BS 2569: Part 2. Must be applied TSA Manufacturers recommendations inorganic zinc silicate Manufacturers recommendations polysiloxane primers FOR DUTIES AT TEMPERATURES ABOVE 340 0 C (TABLE SPA3c)       Thermally sprayed Aluminium (TSA) shall be applied to prepared surfaces in accordance with BS EN 22063 and/or BS 2569: Part 2. TSA is deemed to be impractical due to operational restraints for this high temperature. use of paint systems based on inorganic zinc silicate or polysiloxane primers –manufacturer recommendations With the use of inorganic zinc silicate, mud cracking of the coating may result–manufacturer recommendations TSA and inorganic zinc silicate primers are used, they shall be sealed with a high temperaturesealer. Sealers shall be applied and cured in accordance with the manufacturers' recommendations 150 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER Operation Number 1 2 3 Subject of operation Mask Remove surface contamination Blast clean 4 Apply system 4a TSA b c Apply sealer Apply heat to cure sealer 5a Inorganic zinc silicate Apply sealer Apply heat to cure sealer b c 6a Polysiloxane inorganic primer Comments 2013 Relevant clauses in PA10 Equipment protect / masked Surface preparation by washing BS 7079 Sa3quality, Maximum profile 75 µm System chosen from below lists Abrasive blast cleaning / Preparation for painting inorganic zinc silicate or polysiloxane inorganic primers Optional – TSA system accordance with BS EN Must be applied TSA 22063 and/or BS 2569: Part 2. Manufacturers recommendations Apply High temp. sealer Manufacturers recommendations Apply High temp. sealer / check plant operating instruction Optional-Inorganic zinc silicate system Manufacturers recommendations Paint system inorganic zinc silicate Manufacturers recommendations inorganic zinc silicate Manufacturers recommendations inorganic zinc silicate / check plant operating instruction Optional-polysiloxane system Manufacturers recommendations Must be applied polysiloxane inorganic primer TSA system will provide longest service life. PAINTING OF DAMP FERROUS SURFACES – SPA 4 This SPA4 applies to the painting of ferrous surfaces on which the presence of condensation during painting cannot be operationally prevented  A Number of paint systems are available which are tolerant to damp surfacescannot be used on wet surfaces.  They shall not be used when ice is present, or where the surface temperature is likely to be below 3 0 C. Types of materials which are known to perform satisfactorily on damp metal surfaces are: a) Moisture curing polyurethanes. b) High solids multi-component epoxy paints. Any oil or grease shall be removed by swabbing with grease removing solvents. The surface shall subsequently be washed with a 2% detergent solution        All surfaces shall be blast cleaned to achieve BS 7079 Sa 2 ½ quality immediately a degree of rust blooming is acceptable the manufacturers' instructions shall be followed Immediately prior to painting, all droplets and standing water shall be removed from the surfaces to be painted by mopping or using a squeegee. Cloths or rags shall only be used if they are lint-free. All grit and dust shall be removed from the blast-cleaned surface by washing with clean water All paints shall be brush applied. 151 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINTING OF DAMP FERROUS SURFACES – SPA 4 Operation Number 1 Subject of operation Remove all surface contamination, etc., 2 3 Blast clean Wash 4 Remove droplets and standing water Apply system 5 Period before next operation Maximum 4 hrs In accordance with manufacturer’s instructions Comments BS 7079 Sa 2 ½ quality To remove all grid & dust Surface shall not be wet To be applied by brushing Relevant clauses in PA 10 Cleaning surface & contaminations / remove oil & grease Abrasive blast cleaning Grid & dust must be removed Remove droplets and standing water Application of paint by brush PAINTING OF NON-FERROUS SURFACES– SPA6 This SPA6 applies to the painting at site of the non-ferrous surfaces specified below: a) New galvanized surfaces. b) Weathered galvanized surfaces. c) Previously painted galvanized surfaces. d) Aluminium surfaces. Above listed are painted primarily to provide corrosion protection theminimum dry film thickness 120 μm with MIO build coat e) Stainless steel. f) Pre-painted cladding ('Plastisol' cladding or equivalent). g) Glass reinforced plastics (GRP). h) Fusion bonded epoxy (FBE). i) Multi component liquids (MCL). j) Concrete. Above listed are painted for cosmetic purposes only Donot require a MIO coat.  All these surfaces, especially Aluminium and stainless steel shall be thoroughly cleaned and then lightly abraded to provide an adequate key for the new paint system (see Table SPA6a). PREPARATION OF SURFACES FOR PAINTING  All forms of surface contamination and disbonded paint shall be removed, especially oil, grease, salts, dirt and dust.  This should be achieved by the use of detergent cleaners or emulsifying agents followed by a clean water rinse. . 152 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 APPLICATION OF PAINT TO PREPARED SURFACES Compliant materials of the type listed in Table SPA6b shall be specified by the Engineer and applied. The choice of the generic paint system will determine the initial coat required and this is shown in Table SPA6c.      Water borne acrylic paint systems do not require a separate primer as the MIO will fulfill this function. Coating systems shall full gloss finish of the same generic type as thepreceding coats. Anepoxy primer and intermediate coat have been applied, Anepoxy acrylic or epoxypolyester topcoat shall be specified. In some situations, it may be required to terminate the paint system at the MIO coat. Non-ferrous surfaces - surface preparation --- TABLE SPA 6a Surface preparation Non-ferrous surfaces Comments Preferred option a First option Sweep abrasive blast Hand abrading Stiff bristle brushing Sweep abrasive blast Hand abrading Sweep abrasive blast Hand abrading New galvanizing b Weathered galvanizing c d Previously painted galvanizing Aluminium e Stainless steel Sweep abrasive blast f Pre-painted cladding (‘Plastisol’ cladding or equivalent) Glass reinforced plastics Fusion bonded epoxy Multi component liquids Concrete Sweep abrasive blast Hand abrading Sweep abrasive blast Sweep abrasive blast Sweep abrasive blast In accordance with the Manufacturers’ recommendations Hand abrading Hand abrading Hand abrading g h i j The preferred and first options eliminate the need for an ‘Etch’ primer. An ‘Etch’ primer (Twash) shall be used where these options are impractical Weathered surface provides its own key Thin gauge Aluminium should not be blast cleaned and should be treated with an etch primer prior to the application of intermediate and finish coats. Chlorinated hydrocarbon solvent shall not be used Only Aluminium oxide should be used as the blasting medium Surface abrasion may not be required for new concrete. Old paint should be removed if required using scrabblers 153 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Non-ferrous surfaces - Paint systems - TABLE SPA6b Non-ferrous surfaces a New galvanizing Groups of paint systems Comments G1 G2 G3 Water-borne acrylic Epoxy high build Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd Alkyd or modified alkyd b Weathered galvanizing Water-borne acrylic Epoxy high build c Previously painted galvanizing Water-borne acrylic Epoxy high build d Aluminium Water-borne acrylic Epoxy high build e Stainless steel Water-borne acrylic Epoxy high build f Pre-painted cladding (‘Plastisol’ cladding or equivalent) Glass reinforced plastics Water-borne acrylic h Fusion bonded epoxy Water-borne acrylic i Multi component liquids Water-borne acrylic j Concrete Water-borne acrylic Moisture cured urethane Moisture cured urethane Moisture cured urethane Moisture cured urethane Moisture cured urethane g Water-borne acrylic Any damaged galvanizing shall be repaired with zinc rich epoxy Any damaged areas where the steel substrate is exposed, should be repaired in accordance with SPA1 For new concrete a sealer coat may be required 154 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Non-ferrous surfaces - Paint systems - Initial coat - TABLE SPA6c Groups of paint systems Non-ferrous surfaces G1 a New galvanizing b Weathered galvanizing c Previously painted Galvanizing d Aluminium e Stainless steel f g Pre-painted cladding (‘Plastisol’ cladding or equivalent) Glass reinforced plastics h Fusion bonded epoxy i Multi component liquids j Concrete G2 G3 Water-borneacrylic Micaceous iron oxide ( 65µmminimum ) Pigmented highbuildEpoxy ( 65µmminimum ) Alkyd ormodifiedalkyd ( 40µmminimum ) Water-borne acrylic Micaceous iron oxide ( 65µmminimum ) Water-borne acrylic Micaceous iron oxide ( 65µmminimum ) Water-borne acrylic Micaceous iron oxide ( 65µmminimum ) Water-borneacrylic Micaceous iron oxide ( 45µmminimum ) Water-borne acrylic Micaceous iron oxide ( 45µmminimum ) Water-borne acrylic Micaceous iron oxide ( 45µmminimum ) Water-borne acrylic Micaceous iron oxide ( 45µmminimum ) Water-borne acrylic Micaceous iron oxide ( 45µmminimum ) Single pack waterborneacrylic primer (30µmminimum ) Pigmented high build Epoxy ( 65µmminimum ) Alkyd or modified alkyd ( 40µmminimum ) Pigmented high build Epoxy ( 65µmminimum ) Alkyd or modified alkyd ( 40µmminimum ) Pigmented high build Epoxy ( 65µmminimum ) Alkyd or modified alkyd ( 40µmminimum ) Chloride free Epoxy high build ( 65µmminimum ) Compatible moisturecured urethane (25µmminimum ) Compatible moisture cured urethane (25µmminimum ) Compatible moisture cured urethane (25µmminimum ) Compatible moisture cured urethane (25µmminimum ) Moisturecuredurethane sealer Compatible Alkyd or Modifiedalkyd ( 40µmminimum ) Compatible Alkyd or Modified alkyd ( 40µmminimum ) Compatible Alkyd or Modified alkyd ( 40µmminimum ) Compatible Alkyd or Modified alkyd ( 40µmminimum ) Compatible Alkyd or Modified alkyd ( 40µmminimum ) Institution of Gas Engineers (IGE) Recommendations IGE/SR/21 - Blast cleaning operations 155 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Sequence of Events leading to Clients Inspection a. Their reasons are mainly due to malpractices of contractor personals and also in the lapse of the painting Inspector responsibility. b. Surface preparation is very important, may not been carried out as per requirement. Could be contaminants present like oil, grease, &dust. c. Painting carried out in adverse weather conditions. d. Application of subsequent coat without previous coat not fully cured. e. Coating intervals not adhered. f. Skipping or missing out a coat g. Use of jelled paints. Paint shelf life expired. h. Not following the coating system sequence. i. Materials used are not the approved ones& doesn’t meet the specification. Recording of information following Project Completion. a. b. c. d. e. To have record of work stoppage due to adverse weather conditions (down time) To have record of Materials consumed. Manpower deployed and Equipment used. Record of wastage material. Estimation of project cost for future tendering purpose. Client/ Contractor Relationship Good working relationship helps to resolve problems. To arrive at an amicable Solution. To express Concern, practical difficulties and work related problems to resolve. To ensure safe working methods are adopted. Co-ordial relationship will contribute to understand the job more precisely. 156 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 1. 2013 PA 10 specification is suitable for use in the following area: a) Onshore installations b) offshore installations c) internal coatings of pipes d) below ground (buried) 2. PA 10 specification is not suitable for use in the following area: a) Stove enamel coating b) internal coatings of pipes c) below ground (buried) d) All of the above 3. PA 10 does not deal with which of the following? a) Maintenance Painting b) Above ground plant installation c) Buriedpipelines and fittings d) Works plants installation 4. What is mean by compliant coating? a) Coating which applied on specified atmosphere condition b) Coating which suitable with the requirements of the EPA c) Coating which suitable for the steel substrate d) Coating with non-compliance report 5 Which situation is expressed as damp surface? a) Surface with detectable water b) Surface temperature below dew point c) Surface with a noticeable film of water d) Surface temperature above dew point 6. A Galvanized substrate with oxide layer has formed called a) New Galvanising b) Weathered Galvanising c) Unsuitable galvanizing d) Previously painted Galvanising 157 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 7. 2013 A Galvanized substrate with oxide layer has not formed called a) New Galvanising b) Weathered Galvanising c) Unsuitable galvanizing d) Previously painted Galvanising 8. Which surfaces comes on hot duty surfaces a) Metal surfaces attaining a temperature above 340o C b) Metal surfaces attaining a temperature above 100o C c) Metal surfaces attaining a temperature above 37o C d) Metal surfaces attaining a temperature above 540o C 9. Long term protection, coatings as required by PA10, are expected to last, typically a) upto 4 years b) upto 6 years c) upto 10 years d) upto 15 years 10. Medium term protection, coatings as required by PA10, are expected to last, typically a) upto 4 years b) upto 6 years c) upto5 years d) upto10 years 11. Short term protection, coatings as required by PA10, are expected to last, typically a) 2 years to 4 years b) 2 years to 3 years c) 2 years to 5 years d) 3 years to 5 years 12. A Coating continues protection of 7 years, which falls in _____________ a) Long term protection b) Medium term protection c) Short term protection d) Fixed term protection 158 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 13.According to Transco , an Engineer is a) Appointed by a contractor and notified in writing to client b) Appointed by Client and notified in writing to contractor c) Responsible for coating and records d) Higher authority 14.Which of the following is normally NOT considered to be a part of the role of a coating inspector? a) Observe the work b) Write non-conformance reports c) Supervise the labour work d) Document the work 15. A primer used for pretreatment for zinc metal surfaces. a) Zinc rich epoxy b) T.Wash c) FBE d) Zinc Phosphate 16. Who is having permission to change a specified paint system? a) Paint technologist b) Painting inspector c) Engineer d) Contractor 17. Specifications for a particular job must be decide by the a) Paint technologist b) Painting inspector c) Engineer d) Contractor 18. Programme of work which must be prepared by the a) Paint technologist b) Painting inspector c) Engineer d) Contractor 159 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 19. 2013 Relevant local site regulations should be detailed in writing by the a) Painting inspector b) Engineer c) Contractor d) Paint technologist 20. In accordance with PA 10, surface preparations by abrasive blast cleaning, shall provide a peak-to-through height or profile measurement of a) Not less than 350 µm and not greater than 100µm b) Not less than 35 µm and not greater than 80µm c) Not less than 35 µm and not greater than 100µm d) Not less than 30 µm and not greater than 75µm 21. Paints should be supplied by one a) Manufacturer b) Engineer c) Contractor d) Paint technologist 22. All the paints must be stored under cover and in conditions recommended by the a) Painting Manufacturer b) Engineer c) Contractor d) Paint technologist 23. All the paints are on operational sites, the storage method and area must be approved by the a) Painting Manufacturer b) Engineer c) Contractor d) Paint technologist 24. Vaccume blasting is a) Water blasting b) Abrasive blasting c) Closed blasting d) Air blasting with water 160 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 25. 2013 Open blasting system is a) Expendable b) Re-use abrasive c) Non-expendable d) None 26. Expendable abrasives can be reused for site blast cleaning? a) IF it is more economical to do so b) If the site engineer witness that they are cleaned in fresh water first. c) Not under any circumstances d) Provided they are mixed with fresh abrasive first 27. Which of the following dry abrasives should not be re-cycled or reused a) Steel shot b) Chilled Iron grit c) Copper slag d) Shot and grit mix 28. May reduce the expected life of paint system a) Sa2 b) Sa3 c) Sa2 ½ d) St2 30. Paints must not be used beyond manufacturers stated a) Shelf life b) Induction period c) Dew point d) St2 31. Paint shall be normally applied when the RH in work zone is? a) Less than 89% b) Between 71 to 89% c) Less than 90% d) Greater than 90% or more 161 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 32. 2013 Overcoming times shall be determined by? a) The contractor b) Painting inspector c) The manufactures data sheet d) The painter 33. Which information on a paint manufacture’s data sheet, is commonly notnormally stated? a)Batch number b) Orifice size c) Spreading rate d) Method of cleaning equipment and tools 34. One method of ensuring the achievement of the required DFT to edges of weld profiles during the paint application on site is a) By adding of extra solvent thinners to the paint material b) By increasing the duration of spray application at these areas c) By stripe coating d) By electrostatic spray application 35. When a multi-component paint reaches the end of its recommended pot life a) It can be used provided environmental condition are right b) It can be remixed into fresh paint for use c) It can be used for maintenance painting d) It should not be used 36. Wet abrasive blast cleaning of a surface should be followed by dry abrasive blast cleaning? a) Only as directed by the engineer b) To remove the surface profile created by the wet process c) Because the immediate oxidation of the substrate after wet blasting must be removed d) Does not required 37. All mechanical damage, such as surface lamination and sharp edges, observed on a substrate should be a) Immediately removed by carefully grinding b) Carefully removed by means of spark free power brushes c) Reported to site engineer, for his assessment d) They will be normally being removed during blasting operations. 162 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 38. 2013 All waste material resulting from surface preparation and painting operations be disposed of in accordance with a) RIDDOR regulations b) The health and safety at work act c) The environmental protection act d) IGE/SR/21 39. After applying primer on steel surface, Paint got wetted by raining. As a painting inspector what you do? a) Wait for water to dry b) Blast to remove existing primer, recoat c) Continue next stage after rain d) Recoat primer without removing existing coat 40. Where defects removal has been carried out, the area concerning shall be a) Sprayed b) Re-blasted c) Separately Primed d) Brush painted 41. What would be the correct course of action upon discovering that the contractor has applied a coat of paint, out of sequence? a) Blast and re-coat b) Apply the correct coating over the top c) Informed the Engineer d) Add an extra protective coating 42. Wa1, Wa2 are grades of a) Abrasive blasting b) Closed blasting c) Water Blasting d) Weathering Grades 163 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 43. 2013 Flash rusting of a substrate a) May result in the substrate being discarded b) Should be removed by hand abrasion c) Should be removed by dry abrasive blast cleaning d) Is acceptable for painting, when environmental conditions are satisfactory 44. The maximum time for blasting or surface preparation before coating must applied in a) 2 hrs after completion of surface preparation b) 4 hrs after completion of surface preparation c) one working day after completion of surface preparation d) There is no maximum time limit 45. The paint should be applied after blasting? a) Within 3 hours after blasting b) Within 5 hours after blasting c) Within 4 hours after blasting d) Within 8 hours after blasting 46. The British standard for preparation of steel substrate before the application of paint and related products is a) BS 2451 b) BS 5252 c) BS 4800 d) BS 7079 Part A1 47. The most common type of thermally sprayed material for hot duty application is a) Zinc b) Graphite c) Silicon d) Aluminium 48. According to PA10 paint shall be normally be applied when air and substrate temps are a) Within 3Cof dew point b) Within 3C below dew point c) Atleast 3Cof below dew point d) greater than 5C 164 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 49. 2013 De-lamination is a fault occurs when using a) Epoxy b) CR c) Micaceous Iron Oxide d) Poly Urethane 50. What is the solution, if damage occurs to a galvanizing? a) T Wash b) Zinc Rich Epoxy c) CR d) Water Borne Acrylic 51. According to PA10, what is the correct course of action upon discovering foreign bodies embedded in the paint film? a) Apply an extra protective barrier coat b) Re-blast, and re-coat c) Lightly abrade with emery paper, apply stripe coat d) Make a report to the engineer 52. According to PA10, is the addition of Thinners allowed? a) Yes, at the engineers discretion, up to 20% max. b) Only if the paint is difficult to apply c) Yes, in accordance with the product data sheets d) No, under no circumstances. 53. In accordance with PA10 section 32, paint application by roller is a) Not allowed b) Highly desirable for large areas c) Only to be used primer coats on blast cleaned surfaces d) Not recommended 54. New and maintenance painting for indoor use or short term protection of carbon steel surfaces operating at a) above 100oC b) below 100oC c) below 50oC 165 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 d) below 75oC 55. Which table followed to preparation for paintingof uncoated or unsuitably coated surfaces? a) SPA 1e b) SPA 1a c) SPA 1b d) SPA 1c 56. Which type of paint applied at works in preferred system is high solids according to PA10? a) Solvent based epoxy primer b) Water borne acrylic c) Zinc rich epoxy d) Moisture cure polyurethanes 57. What is the maximum allowable time lapse between blasting and coating? a) 24 Hours b) 7 days c) 4 hours d) 1 Hour 58. What is the approximate overlap area in painting? a) 100 mm b) 100 cm c) 10mm d) 100 µm 59. What is the minimum time for over coating? a) 30 Minutes b) 4 Hrs c) 12 Hrs d) Manufacturer recommend 60. Over coating is carried out ? a) Within one month b) Within two month c) Within three month 166 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 d) Within four month 61. Alternative equivalent complaint system are available may be proposed to Transco? a) Water borne paints b) Thixotropic paints c) Zinc rich epoxy d) Metal spray paints 62. Final coat must be? a) Safety b) Cosmetic defects c) Finish coat d) All the above 63. Over coat of MIO should be applied to all primers to a Minimum DFT? a) 100 µm b) 120µm c) 75 µm d) 70µm 64. Final coating will require to a Minimum DFT? a) 100 µm b) 120µm c) 75 µm d) Defendant upon system 65. What is the total thickness of compliant epoxy based paint? a) 325 µm b) 225µm c) 265µm d) 365µm 167 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 66. 2013 What is the total thickness of water borne acrylic paint? a) 325 µm b) 225µm c) 265µm d) 365µm 67. The specified preferred 4 coat paint system in British Gas PA10 is a) Red Lead, Zinc based undercoat, polyurethane, Acrylic finish b) Zinc Chromate primer, Micaceous Iron Oxide, Chlorinated Rubber,Moisture Tolerant Polyurethane c) High build Epoxy Aluminium primer, Epoxy Micaceous Iron oxide, Epoxy undercoat, Epoxy Polyester or Acrylic finish. d) Zinc galvanise, Micaceous Iron Oxide, Thermally sprayed aluminium, silicone sealer 68. Compliant systems which meet the requirement of a) T/SP/PA/9 b) T/SP/PA/8 c) T/SP/PA/10 d) T/SP/PA/7 69. For long term protection, preferred system at site refers which table a) SPA 1a b) SPA 1b c) SPA 1d d) SPA 1e 70. BGC/PS/PA10 contains which table, specifying the coating systems? a) Spa 6a b) Spa 1e c) spa 4a d) spa 3c 71. What is the specified abrasive overlap requirement on repair areas? a) 250 mm b) twice pipe diameter c) 100 mm d) 1 meter 168 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 72. 2013 The specified 3 coat paint system in British Gas PA10 is a) Primer coat b) Mid Coat c) Finish Coat d) All the above 73. Which grade of surface preparation required for hot duty surfaces from above 150 oC a) Sa1 b) Sa2 c) Sa2½ d) Sa3 74. Which type of operational chart required for hot duty surface from 100 oC149oC? a) SPA 3a b) SPA 3b c) SPA 3c d) All the above 75. Which type of operational chart required for hot duty surface from 150 oC340oC? a) SPA 3a b) SPA 3b c) SPA 3c d) All the above 76. Which type of operational chart required for hot duty surface above340oC? a) SPA 3a b) SPA 3b c) SPA 3c d) All the above 169 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 77. 2013 According to Transco PA10,which metal spray not required a sealer a) TSA b) Polysiloxane Inorganic Coating c) Poly Vinyl Buterol d) Inorganic Zinc Silicate 78. For the painting of damp ferrous substrate, all paint should be? a) Dried with the assistance of a warm air blast b) Spray applied c) Over coated as quickly as possible d) Brush applied 79. Which application method used to apply paints on damp surface a) Brush b) Roller c) Airless Spray d) Dip coating 80. It is advisable to apply Moisture curing polyurethane by a) Airless spray b) Brushing c) Roller d) Padding 81. Beryllium Bronze is a material useful in the manufacture of a) Power wire brushes b) Welding electrodes c) Comb gauges d) Nonmetallic reinforcement spacers 82. What is the material used to carry out repairs in dµmp conditions? a) Moisture Curing Polyurethane b) Moisture Tolerant Resin c) Chlorinated Rubber d) Water Borne Acrylics 170 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 83. 2013 _________ can be applied when Relative humidity = 100% a)Epoxy b)CR c)Poly urethane d)Zinc Rich Epoxy 84. Over application of inorganic zinc silicate (IZC) may result in a) Grinning b) Checking c) Flocculation d) Bittiness 85. Where a silicone sealer is applied to an Inorganic Zinc Silicate coating system, how is the sealer cured? a) Propane torch b) Electric induction pads c) It cures when the system begins to operate d) It does not require curing 86. Which paint is more suitable for hot duty surface above 150ᵒ C a) Zinc Silicate b) High Solid Epoxy c) Urethane d) CR 87. What is the approximate induction period of CR a) 20 minutes b) 30 minutes c) 6-8 hrs d) Not Applicable 88. Which one is not included in non-ferrous substrate? a) Stainless steel b) Mild steel c) New Galvanising d) Weathered Galvanising 171 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 89. 2013 Which blasting is suitable for non-ferrous substrates a) Thorough abrasive blasting b) Sweep blasting c) Sa2½ d) Not Applicable 90. Which Abrasive is preferred to use on stainless steel a)Copper slag b)Steel Grit c)Steel Shot d)Aluminium oxide 91. Which surface preparation is used for weathered galvanising a) Sweep Blast b) Stiff Bristle Brushing c) Through Blast d) Sa2½ 92. What surface preparation is specified in PA 10 for weathered galvanisedsteel? a) Sa 2 ½, followed by T-wash mordant primer b) Sa 3, followed by etch primer c) Hand abrasion with a stiff bristled brush only d) Sa 1 followed by water washing 93.The most widely used materials for pipeline coating are which of the following? a) Alkyd enamels b) Fusion-bonded epoxies c) Thermoset plastics d) High density latexes 94. Thin gauge Aluminium should be treated a) Alkyd enamels b) Blast clean c) Etch primer d) Aluminium oxide 172 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 95. 2013 Which type of surfaces to the paint primarily to provide corrosion protection at non-ferrous? a) New galvanised b) Weather galvanised c) Aluminium surface d) All of the above 96. Which type of surfaces to the paint to provide cosmetic protection at non-ferrous? a) Glass reinforced plastics b) Concrete c) Multi component liquids d) All of the above 97. Which surface is requiring to MIO build coat at non-ferrous? a) New galvanised b) Weather galvanised c) Aluminium surface d) All of the above 98. What type of pigment used to galvanising suffered damage of more than a scratch or gouge repair? a) Zinc rich epoxy b) Polyethylene c) Aluminium d) Zinc 99. What type of paint systems used for glass reinforced plastics at non-ferrous? a) Water-borne-acrylic, Moisture cured urethane, Alkyd or modified alkyd b) Water-borne-acrylic, Micaceous iron oxide, Alkyd or modified alkyd c) Water-borne-acrylic, Epoxy high build, Alkyd or modified alkyd d) Solvent-borne-acrylic, Micaceous iron oxide, Alkyd or modified alkyd 100. What type of paint systems used for Aluminium surface at non-ferrous? a) b) c) d) Water-borne-acrylic, Moisture cured urethane, Alkyd or modified alkyd Water-borne-acrylic, Micaceous iron oxide, Alkyd or modified alkyd Water-borne-acrylic, Epoxy high build, Alkyd or modified alkyd Solvent-borne-acrylic, Micaceous iron oxide, Alkyd or modified alkyd 173 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 101. 2013 What type of paint systems of initial coat used for weathered galvanising at non-ferrous? a) Water-borne-acrylic Micaceous iron oxide, pigmented high build epoxy, Alkyd or modified alkyd b) Water-borne-acrylic Micaceous iron oxide, Compatible Moisture cured urethane, Compatible Alkyd or modified alkyd c) Water-borne-acrylic Micaceous iron oxide, Chloride free high build epoxy, Compatible Alkyd or modified alkyd d) Water-borne-acrylic Micaceous iron oxide, Moisture cured urethane, Alkyd or modified alkyd 102. What type of paint systems of initial coat used for Pre-painted cladding at non-ferrous? a) Water-borne-acrylic Micaceous iron oxide, pigmented high build epoxy, Alkyd or modified alkyd b) Water-borne-acrylic Micaceous iron oxide, Compatible Moisture cured urethane, Compatible Alkyd or modified alkyd c) Water-borne-acrylic Micaceous iron oxide, Chloride free high build epoxy, Compatible Alkyd or modified alkyd d) Water-borne-acrylic Micaceous iron oxide, Moisture cured urethane, Alkyd or modified alkyd 103. What type of paint systems of initial coat used for stainless steel at non-ferrous? a) Water-borne-acrylic Micaceous iron oxide, pigmented high build epoxy, Alkyd or modified alkyd b) Water-borne-acrylic Micaceous iron oxide, Compatible Moisture cured urethane, Compatible Alkyd or modified alkyd c) Water-borne-acrylic Micaceous iron oxide, Chloride free high build epoxy d) Water-borne-acrylic Micaceous iron oxide, Moisture cured urethane, Alkyd or modified alkyd 104. Which of the following substrate are not dealt with in table SPA6 of PA10? a) Concrete b) Stainless steel c) Galvanised surface d) They are all dealt with under that system 174 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 105. 2013 All surface breaking laminations observed on a substrate shall be: a) Reported to the welding inspector immediately b) Removed by chipping hammer under the supervision of the blasting foreman c) Removed by grinding with the agreement of the engineer d) Removed by sharp edged scraper with the permission of the safety manager 106. A newly galvanised substrate has a surface: a) Where a cohesive oxide layer has not been formed and which exhibits a dull appearance lacking in metallic sheen b) On which a cohesive oxide layer has not been formed and which exhibits a dull appearance lacking in metallic sheen c) Whicha cohesive oxide layer has not been formed, showing a brightin metallic sheen d) On which a cohesive oxide layer has been formed, showing a bright in metallic sheen 107. In accordance with PA 10 table SPA 3c, where TSA or IZS have been as the preferred coating for surface operating above 340oC: a) They should be cured by a chemical reaction b) They coating must be immediately heated to 340oC c) They should be sealed with polysiloxane inorganic coating d) They must be further protected by the application of silicone sealer 108. The most widely used materials for pipeline coating are which of the following? a)Alkyd enamels b) Fusion-bonded epoxies c)Thermoset plastics d) High density latexes 109. Powder coating types may include which of the following? a)Alkyds b)Epoxies c)Organic Zinc d)Latexes 110. Which of the following is normally NOT considered to be a part of the role of a 175 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 coating inspector? a) Observe the work b)Write non-conformance reports c) Supervise the labours work d) Document the work Additional Questions: 1. Thermal spray coatings method may expel a VOC of a) 100% b) Near 75% c) Near 50% d) 0% 2. The use of an electrostatic handgun has a transfer efficiency of which of the following? a) <25% b) <50% c) Between 50 - 75% d) About 98% 3.Which information normally not given by the manufacturer’s data sheet? a) Batch numbers b) Orifice size c) Spreading rate d) Over Coat time 4.A paint viscosity test is carried out at a controlled temperature in order to? a) Promote paint flow b) Warm the paint up c) Keep the weigh even d) Promote uniformity of the test 5. Etch Primers as a) Etch Primer is one kind of surface Preparation Material which is used instead of abrasive blasting. b) Etch primed surfaces will be slightly rough c) And they will provide, key for the succeeding Painting application. d) All of the above 6. Solvents are 176 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 a) Solvents form the evaporative part of the drying process. b) Thins the Paint so it can be easily applied. c) Washes out brushes & Equipment. d) All of the above 7. Larger areas we go for open site abrasive blasting, depending on the type of system we go for a) Sa1, Sa2, Sa2.5, Sa 3. b) St2, St3. c) Hand abrade with Emery paper Grit 80/120/200 d) All of the above 8. Areas very small and for spot repairs we go for Mechanical Power tool cleaning a) Sa1, Sa2, Sa2.5, Sa 3. b) St2, St3. c) Hand abrade with Emery paper Grit 80/120/200 d) All of the above 9. Areas which are inaccessible for mechanical Buffers (Grinding machine) we go for a) Sa1, Sa2, Sa2.5, Sa 3. b) St2, St3. c) Hand abrade with Emery paper Grit 80/120/200 d) All of the above 10. Polyurethane coats have a finish which is of a) High Gloss b) They are abrasion resistant, c) Polyurethane coats can be cleaned easily well resistant to UV d) All of the above 11. Epoxy coatings are one of the a) Strongest Binders b) They provide High Build coating suitable for Airless Spray Application. c) They can be modified form for High Temperatures and Damp surfaces d) All of the above 177 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 12. 2013 Disadvantage of Epoxy coatings a) It will make a Poor finish coat because they will chalk easily b) Strongest Binders c) They provide High Build coating suitable for Airless Spray Application. d) They can be modified form for High Temperatures and Damp surfaces 13. Risk Assessments when Painting. a) Fire Risk due to Inflammable nature of substances of paint. b) Fumes &Inhalation of Toxic gases c) To use appropriate P.P.E d) All of the above 14. Risk Assessments when Blast cleaning a) Working in confined space b) To obtain work permit for the job c) To display boards d) All of the above 15. Problems are coming when Density & Viscosity of paint are not correct. a) Poor opacity b) poor Gloss & slow drying, c) Poor durability d) All of the above 16. Paint not be applied to the defined D.F.T. Drying problem may occur. It may create the surface defects like a) Runs b) Sags c) Thixotropic points d) All of the above 178 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 17. 2013 Visually examine the surface a) The Substrate prior to blasting for any inherent defects b) Detrimental contaminants such as oil. Mud etc. c) Observe the surface for unusual discoloration d) All of the above 18. Make scotch test to ensure that the surface is free from dust particles. On Dry Paint films a) Uniform in appearance b) Free from Paint Faults and low DFT areas c) Missed & skipped areas d) All of the above 19. What are the important properties of paint? a) Ability to preserve the surface from corrosion& other type of deterioration. b) Show some sacrificing effect and Decorative purpose. c) Opacity, tinting power, resistance to acid alcoholic and light. d) All of the above 20. Degree of gloss determined by a) Degree of pigment dispersion. b) Size of pigment particles c) The pigment volume concentration and binder type d) All of the above 21. A coat of paint which can tie two normally incompatible systems together a) Mid Coat b) Final Coat c) Tie Coat d) None of the above 179 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Procedure for using replica tape is as follows:  Zero the dial micrometer. Clean the anvils (paper or fingers) an d allow the contacts to come together, release the locking screws and adjust the bezel so that the zero isimmediately behind the large needle.  Remove the backing paper from the replica tape, ensure that the small white disc with the black ring is detached also. Stick the replica tape to the area to be measured.  Using a pen or pencil end, or the specially provided plastic stick, rub firmly and evenly all over the area of the mylar. This causes the testex paste to pass into the troughs and the peaks of the blast will butt up to the transparent mylar.  Remove the replica tape and check. The mylar area should no longer be white (now grey), and pinpricks of light should be visible through the mylar when held up to the light.  Place the testex paste area between the anvils of the micrometer and allow them too gently close together. From the final reading on the gauge deduct two thou if using an imperial gauge or 50µm if using a metric gauge. The balance figure is the peak to trough height of the profile. Procedure for using density cup: Weigh the clean, empty cup and the lid on a metric scale, sensitivity ± 0.1gm.  Fill the density cup with the paint, to within approximately 2mm of the brim.  Allow any entrapped air bubbles to burst and replace the lid slowly and firmly until it seats firmly on the shoulder of the brim.  The chamfer in the lid allows air to be expelled as, the lid is replaced, followed by paint over the required 100cc volume. If no paint is expelled remove the lid and add more.  Wipe off any excess paint from the vent and weigh the filled cup.  Deduct the weight of the empty cup from the final weight and divide by 100.  The answer is the density in gram/cc. Procedure for Using viscosity:  Ensure that the equipment and paint temperatures are at 20oc ± 0.5oc.  Level off the equipment using the bubble level and adjustable screw legs.  Put the lid to one side when levelling is complete.  Place a suitably sized receptacle under the orifice (greater than 100cc).  Place a finger over the nozzle orifice and fill with the paint to be tested, up to the brim, leaving a convex meniscus.  Using a straight edge (a ruler) quickly scrape excess material into the overflow rim on the top of the cup.  Simultaneously start a stopwatch (or use sweep second hand) and remove finger from the nozzle.  The paint will run from the orifice in a continual stream. At the first distinctive break in the stream i.e. when it drips, stop the watch. The time in seconds is recorded as the viscosity, at the measured temperature. Procedure for this operation are using comb gauge:  Select the appropriate gauge with the smallest increment rise tooth to tooth.  Apply the gauge firmly, perpendicular to the substrate into the paint film ensuring that the two end lands are firmly on the substrate.  Withdraw the comb gauge and look at the teeth.  Two values should be recorded. The number above the last tooth wetted by the paint and the value of the next highest not wetted. 180 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Procedure for whirling Hygro meter:a. Hold the Hygrometer Straight facing the Wind direction. In the Wind direction and start rotating to 30 -40 rotations per second. b. First read the wet bulb temperature immediately then the dry bulb temperature. c. Repeat the operation to get two consecutive readings within 0.2 c Calibration of Banana Gauge: 1. Choose a magnetically insulted shim of known thickness, close to the thickness of the paint you expect to find. 2. Place the shim on the same substrate surface finish as the surface finish on which the paint film to be measured is attached, e.g.-if the paint Is on a blasted surface, calibrate the gauge on a uncoated Blasted surface. 3. Place the magnet onto the shim and press firmly on the instrument, Wind the scale wheel forwards (away from you).Until the Magnet is Definitely attached to the shim substrate. 4. Gradually wind the wheel backwards slowly until the magnet detaches itself. T At this point, move the cursor on the instrument to the thickness of the shim as shown on the Scale wheel. With some instrument the scale itself must be moved to line up with a fixed cursor. 5.When using the later type of instrument .rotate the wheel to zero to locate the position of the scale adjuster. 6. The instrument is now calibrated and may be used to measure the D.F.T of any nonmagnetic paint films to a claimed accuracy Procedure for Abel Cup:Fix the Abel cup containing the substance for the assessment into a water bath. Activate the source of ignition every ½ deg C rise in temperature. Apply a heat source to the water bath and monitor the air/vapour temperature in the Abel cup. A flash point temperature is identified when a blue flame flashes over the substance being assessed. 181 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Procedure for pull of adhesive test a) Clean and degrease the surface to be tested. b) Roughen the surface fine/medium grain emery sheet. c) Mix regular araldite and stick dolly dolly to the surface and leave for 24 hours at 25 deg C d) Cut paint around the dolly down to the substrate using a special cutter. e) Attach pull off instrument and apply pulling the force. f) Test results require careful interpretations. Some normal values obtained for acceptable Adhesion are as follows. 1500 psi - epoxy based systems 3000 psi - alkyd based systems 12000 psi - zinc etch primer. 182 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 CALCULATIONS AND FORMULA’S WFT x VS % = DFT x 100 1) DFT = WFT x VS % / 100 2) WFT = DFT x 100 / VS % 3) VS.%= DFT x 100 / WFT 4) V= AREA x WFT / 1000 AREA = METER = CM Area square meter- m2 convert to cm2 M2 = CM2 (100 x 100= 10000) For example: 1) Given 10 Diameter in Area Using 3.14 x 5 x 5 2) Tank is 5 Diameter Using 3.14 x 2.5 x 2.5 Tank is 6 meter height 2xЛxrxh Using 2 x 3.14 x 2.5 x 6 3) Given Area in 7 meter radius Using 3.14 x 7 x 7 1. Density = Weight / volume a) Weight = Density x Volume Relative density or specific gravity is the density of any substance compared to the density of water. b) Specific gravity = Density of the substance/density of water 183 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 B. Gas 3.2 MathExercises WFT calculations 1) What WFT would need to be applied to give a DFT of 45 µm using a paint of 56% vs.? WFT = DFT x 100/ VS% 45x100 / 56 4500/56 = 80.36µm 2) What WFT would need to be applied to give a DFT of 60 µm using a paint of 40% vs.? WFT = DFT x 100/ VS% 60x100 / 40 6000/40 = 150µm 3) A paint of 38% vs. was used to give a DFT of 45 µm what wad the WFT? WFT = DFT x 100/ VS% 45x100 / 38 4500/38 = 118.42µm 4) A DFT of 55 µm was obtained from a paint of 55% vs. what was the WFT applied? WFT = DFT x 100/ VS% 55x100 / 55 5500/55 = 100µm 5) What WFT would be applied to leave a DFT of 65 µm using a paint of 49% vs? WFT = DFT x 100/ VS% 65x100 / 49 6500/49 = 132.65µm 184 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 DFT calculations 1) What would be the DFT if 20 liters of paint, vs. 45% covered an area of 9m x 12m? Area m2 - Step -1 Area  9 x12 = 108 V= AREA x WFT / 1000 Step -2 WFT = V/A x 1000 WFT = 20/ 108 x1000 WFT = 185.18µm Step -3 DFT = WFT x VS % / 100 DFT = 185.18 x45 /100 8333.32/100 = 83.33µm 2) 25 liters of paint, vs. 65% was used to cover a circular area of 10m diameter. What would be the resulting DFT? Area diameter - Step-1 Area = Лr2 3.14 x5 x5= 78.5m2 Step -2 WFT = V/A x 1000 WFT = 25/ 78.5 x 1000 WFT = 317.47µm Step -3 DFT = WFT x VS % / 100 DFT = 318.47x65 /100 20700.63/100 = 207µm 3) What DFT would be obtained if paint vs. content 42% was applied at a WFT of 84 µm? DFT = WFT x VS % / 100 DFT = 84x42 /100 3528/100 = 35.28µm 185 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 4) What would be the resulting DFT if a paint containing 83% and WFT of 130 µm, what would be the resulting DFT? DFT = WFT x VS % / 100 DFT = 130x83 /100 10790/100 = 107.9µm 5) A paint, vs. 65% was applied at a WFT of 130 µm, what would be the resulting DFT? DFT = WFT x VS % / 100 DFT = 130x65 /100 8450/100 = 84.50µm VS calculations 1) A DFT of 53 µm was obtained from a WFT of 110 µm, what was the vs. % of the paint? VS. %= DFT x 100 / WFT 53 x 100 /110 =5300/110 =48.18% 2) A paint was applied at 120 µm WFT. The resulting DFT was 65 µm, what was the vs. %? VS. %= DFT x 100 / WFT 65 x 100 /120 =5300/110 = 54.17% 3) What would be the vs. % of a paint if it was applied with a WFT of 120 µm and a DFT of 68 µm was obtained? VS. %= DFT x 100 / WFT 68x 100 /120 =6800/120 = 56.67% 4) What was the vs. % of a paint with a DFT of 36 µm, when the WFT was 108 µm? VS. %= DFT x 100 / WFT 36 x 100 /108 =3600/108 = 33.33% 5) A DFT of 62 µm was measured, from a WFT application of 100 µm, what would be the vs. % of the paint used? VS. %= DFT x 100 / WFT 62 x 100 /100 =6200/100 = 62% 186 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Volume calculations 1) What volume of paint would be required to cover an area of 300 square meters, to a specified DFT of 65 µm, using a paint of 45% vs.? Step – 1 WFT = DFT x 100/ VS% 65x100 / 45 6500/45 = 144.44µm Step -2 Area Square meter - Area = 3002 Convert Square is to CM2100 x 100 = 10000 Step – 3 V= AREA x WFT/1000 3002 x 144.44 /1000 300 x10000 x 144.44 /1000 x 10000 433.33/10 =43.33 liters. 2) How much paint would be required to coat a tank, roof and side sheets to a DFT of 100µm? The tank is 5 meters diameter and 6 metersheight. The paint to be used is solvent free. Step – 1 WFT = DFT x 100/ VS% 100x100 / 100 10000/100 = 100µm Step -2 Area Tank is 5 meters diameter and 6 meters height Area = Лr2 3.14 x 2.5 x 2.5= 19.63m2 Height is 2Лrh 2 x 3.14 x 2.5 x 6= 94.20m2 Total diameter = 19.63 +94.20 = 113.83m2 Convert to CM is 100 x 100 = 10000 Step – 3 V= AREA x WFT/1000 113.83m2 x 100 /1000 113.83 x10000 x 100 /1000 x 10000 113.83/10 =11.38 liters 187 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 3) How much paint would be needed to cover a circular area of 10 meters diameter, using apaint 65% vs. to a DFT of 60 µm? Step – 1 WFT = DFT x 100/ VS% 60x100 / 656000/65 = 92.30µm Step -2 Area 10 diameter Area = Лr2 3.14 x 5x 5= 78.50m2 Step – 3 V= AREA x WFT/1000 78.5m2 x 92.3 /1000 78.5m2x10000 x 92.3 /1000 x 10000 7246.15/1000 =7.25 liters 4) A circular area of 7 meters radius is to be coated to a DFT of 45 µm. What volume ofpaint would be required if the vs. content was 48%? Step – 1 WFT = DFT x 100/ VS% 45x100 / 484500/48 = 93.75µm Step -2 Area 7 meters radius Area = Лr2 3.14 x 7x 7= 153.86m2 Step – 3 V= AREA x WFT/1000 153.86m2 x 93.75 /1000 153.86m2 x10000 x 93.75 /1000 x 10000 14424.37/1000 =14.42 liters 188 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 5) How much paint would be needed, at 55% vs., to coat an area of 250 square meters to aDFT of 60 µm? Step – 1 WFT = DFT x 100/ VS% 60x100 / 556000/55 = 109.09µm Step -2 Area 250 square meters Area = 2502 Convert Square is to CM2100 x 100 = 10000 Step – 3 V= AREA x WFT/1000 250m2 x 109.09 /1000 250m2x10000 x 109.09 /1000 x 10000 2727.25/100 =27.27 liters Density and SG exercise 1) What would be the weight of 16.5 liters of paint with a SG of 1.45? Density = Weight / volume Density Weight = Density x Volume = 1.45 x 16.5 = 23.93 kgs 2) What is the density of paint if 7.5 liters weighs 9.75 kg? Density = Weight / volume = 9.75 / 7.5 = 1.3 gm/cc 189 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 3) What would be the relative density of paint in question two? Relative Density = Density of the substance/density of water = 1.3 /1 = 1.3 No units for RD 4) If the weight of 25 liters of paint is 37.5 kg, what would be the SG? SG= Weight / volume = 37.5 / 25 =1.5gm/cc Density value is 1.29 gm/cc  calculate value is 1.35 gm/cc So that, Base is high Density value is 1.35 gm/cc  calculate value is 1.29 gm/cc  So that, Activator is high 5) A 2 pack epoxy should be mixed at one part base to one part activator; the base has adensity of 1.4gm/cc and the activator 0.9 gm/cc. What would be the density of the mixedcomponents? Density= 1Base + 1Activator = (1)1.4 +(1) 0.9 = 2.3/2 = 1.15 gm/cc 6) A 2 pack paint is mixed at a ratio of six parts pack A (density 1.3gm/cc) to one part pack B (density 0.9gm/cc). What would be the density of the combined parts? A = 6 part x 1.3 B = 1 part x 0.9 7.8gm/cc 0.9 gm/cc Total = 7 part 8.7gm/cc Density is = 8.7/7 = 1.24 gm/cc 190 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 7) A mixed 2 pack paint has a density of 1.35gm/cc. The density of the base was 1.5gm/cc and the activator 0.9gm/cc. The mixing ratio was 3:1. Has the paint been mixedcorrectly? A = 3 part x 1.54.5gm/cc B = 1 part x 0.9 0.9 gm/cc Total = 4 part 5.4gm/cc Density is = 5.4/4 = 1.35gm/cc Density value is 1.35gm/cc  calculate value is 1.35gm/cc So that, correct paint mix 8) A mixed 2 pack paint has a density of 1.35gm/cc. Mixed at a ratio of 6:1, base density 1.45gm/cc, activator density 0.95gm/cc. Has the paint been mixed correctly? A = 6 part x 1.458.70 gm/cc B = 1 part x 0.950.95gm/cc Total = 7 part 9.65gm/cc Density is = 9.65/7 = 1.38gm/cc Density value is 1.35gm/cc  calculate value is 1.38gm/cc So that, Base is high 191 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PRACTICAL PURPOSE RH AND DPCOMMONTABLE WB 8 8 10 DB 10 8 8 DP 7 8 9 RH 89% 100% 90% STEEL TEMP/AIR DEP 11 8 9 Y/N Y N/ NOT POSSIBLE N/ NOT POSSIBLE 1. Steel / Air temperature is always above 5oC 2. Steel/ Air temperature at least @ 3oC above the Dew point 3. Relative Humidity not more than 90% 4. Ambient temperature: - It is the surrounding air temperature also referred as dry bulb temperature. Practical Questions: 46. Use surface Needle gauge a) Below 70 µm b) above 70 to 150µm c) above 150 to 200 µm d) above 200 to300µm 47. Use Dial micrometer with replica tape a)Below 70 µm b) above 70 to 150µm c) above 150 to 200 µm d) above 200 to300µm 48. Find Dew point using dew point calculator? WB = 10 DB = 12 a) DP is 8b) DP is 9c) DP is 7 d) DP is 10 RH is 77% RH is 83% RH is 89% RH is 92% 49. FindRelative Humidity using dew point calculator? WB = 10 Dew point is = 12 a) DP is 8 b) DP is 9 c) DP is 7 d) DP is 10 RH is 77% RH is 83% RH is 89% RH is 92% 50. Use digital Elcometer find coat thickness a)Below 100µm b) above 200 to 350µm c) above 350 to 600µm d) above 600 192 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Practical Theory Questions: Photographs HYGROSCOPIC (OSMOTIC) BLISTERS Copper Slag 193 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Abrasive CONTAMINATED GARNET 194 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 METALLIC GRIT. METALLIC SHOT 195 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 AGRICULTURAL BY-PRODUCT SIEVES TO BS 410 196 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 SURFACE NEEDLE GAUGE DIAL MICROMETER AND SURFACE REPLICA TAPE 197 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 DIAL MICROMETER AND SURFACE REPLICA TAPE SURFACE COMPARATOR TO BS 7079 Pt C, ISO 8503 198 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 RUST GRADES 199 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER BLASTING GRADES A BLASTING GRADES B 2013 Sa 2.5 and Sa 3 Sa 1and Sa 2 200 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER BLASTING GRADES B 2013 Sa 2.5 and Sa 3 BLASTING GRADES, COMPARISONS 201 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER BLASTING GRADES C Sa 1 and Sa 2 BLASTING GRADES C Sa 2.5 and Sa 3 2013 202 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER BLASTING GRADES D Sa 1 and Sa 2 BLASTING GRADES D Sa 2.5 and Sa 3 2013 203 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 HYPODERMIC NEEDLE GAUGE SURFACE PREPARATION HAND AND POWER TOOL CLEANING BSt 2 and St 3 204 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER HAND AND POWER TOOL CLEANING CSt HAND AND POWER TOOL CLEANING D 2013 2 and St 3 St 2and St 3 205 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 SURFACE PREPARATION ---- FLAME CLEANING 206 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER pH INDICATOR PAPERS 2013 CHEMICAL CLEANING SALTS DETECTION, BRESLE SAMPLE PATCH KIT 207 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 QUANTITITIVE TESTS FOR HYGROSCOPIC SALTS MERKOQUANT TEST BRESLE SAMPLE PATCH 208 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT TESTING --DENSITY CUP THE DENSITY ( SG ) CUP 209 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 HEGMAN GRIND GAUGEFOR FINENESS OF GRIND DEGREE OF DISPERSION 210 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 ROTATIONAL VISCOMETER WITH ROTOTHINNER MEASURES DYNAMIC VISCOSITY. UNITS, POISES KREBS STORMER VISCOMETERKINEMATIC VISCOSITY 211 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 A FORD FLOW CUP FORD FLOW CUP IN ITS RETORT AND SHOWING THE 4mm DIA HOLE 212 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 FORD FLOW CUP 213 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 WET FILM MEASUREMENT ECCENTRIC WHEEL 214 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 WET FILM THICKNESS MEASUREMENT COMB GAUGES DESTRUCTIVE TEST GAUGES THE P.I.G 215 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 DESTRUCTIVE TEST GAUGES. THE SABERG TEST DRILL DFT MEASUREMENTS ELECTRONIC GAUGES ELECTROPHYSIC MINI TEST THE EXACTO 216 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 ELCOMETER 456 DRY FILM THICKNESS MEASUREMENT, MAGNETIC. TINSLEY PENCIL 217 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 COLOUR CODED CALIBRATION SHIMS PURPLE → 25µm BLUE → 50µm BROWN→ 125µm → 250µm YELLOW → 500µm WEATHER CONDITIONS WHITE DEW POINT CALCULATOR READ OFF RH FROM TIP OF BLACK ARROW, 218 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 DRY FILM THICKNESS MEASUREMENT, MAGNETIC, HORSESHOE GAUGE 219 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 THE BANANA GAUGE MODEL 111 THE BANANA GAUGE MODEL 211 220 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER FLEXIBILITY TEST 2013 CONICAL MANDREL DRYING AND CURING TESTS BK DRYING TIME RECORDERS 221 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 MECHANICAL THµMB TEST, THROUGH DRYING WOLFF- WILBORN PENCIL SCRATCH TEST 222 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 OPACITY, THE PFUND CRYPTOMETER HIDING POWER CHARTS AND ADJUSTABLE APPLICATOR 223 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 ADHESION TESTS CROSS CUT ( CROSS HATCH ) TEST SPECIAL CUTTER TOOL 224 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 ADHESION TESTS THE DOLLY TEST ADHESION TESTS THE HYDRAULIC ADHESION TESTER 225 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 WEATHER CONDITIONS WHIRLING HYGROMETER WEATHER CONDITIONS MAGNETIC CONTACT 226 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 STEEL TEMPERATURES TERMOCOUPLE CATHODIC PROTECTION MONITORING POTENTIALS COPPER /COPPER SULPHATE HALF CELL REFERENCE ELECTRODE 227 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 CATHODIC DISBONDMENT TEST 228 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 HOLIDAY/PINHOLE DETECTION 229 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER PINHOLE/HOLIDAY DETECTION 2013 SPONGE DETECTOR VOLTAGE RANGE 3 TO 90v.SOME HAVE ONLY 2 SETTINGS. INTERMEDIATE 67.5v. 230 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 PAINT FAULTSBITTINESS INCLUSION, EITHER AIRBRONE OR FROM THE PAINT ITSELF 231 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 BLEEDING DISCOLOURATION SOLVENT FROM THE TOP OF COAT SOFTENS THE UNDER LYING MATERIAL BROWN FOR BITUMEN, YELLOW FOR COAL TARS 232 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 BLISTERING BLISTERS CAN BE FILLED WITH GAS,LIQUID OR CRYSTALS 233 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 CHALKING DEGRADATION OF A BINDER DUE TO DISRUPTIVE FACTORS IN THE ENVIRONMENT 234 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 CISSING 235 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 CRACKING crocodile 236 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 CRATERING BOWL SHAPED DEPRESSIONS CURTAINS SAGS 237 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 RUNS TEARS 238 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER COATING FAULTS 2013 FLAKING MATERIAL PROGRESSIVELY GETS BRITTLE WITH AGE, CRACKS AND BEGINS TO DETACH HOLIDAYS UNCOATED AREA 239 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 LIFTING CAUSED BY SOLVENT STRENGTH AND LACK OF OBSERVANCE OVERCOATING TIME 240 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 ROPINESS BRUSHMARKS WRINKLING 241 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 RIVELLING COLOUR MUNSELL AND BS 4800 YELLOW THROUGH GREEN ,BLUE PURPLE, RED AND BACK TO YELLOW 242 | P a g e BGAS GRADE 2/3 MODEL MULTILE CHOICE QUESTION &ANSWER 2013 Dräger tube and Dräger bellows Hazard warning symbols Black symbol of skull and crossbones on an orange square Toxic or Very Toxic Black diagonal cross on an orange square Harmful or Irritant test-tube dripping onto a hand with a chunk out adjacent to a test tube dripping onto a stone flag with orange Corrosive 243 | P a g e

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