BGas PAINTING INSPECTION SCREEN TEST BGas PAINTING INSPECTION QUESTION 1 Two examples of Hygroscopic Salts would be: (a) (b) (c) (d) Iron Phosphates and Iron Chromates Iron Chlorates and Iron Oxides Iron Sulphates and Iron Chlorides Iron Sulphides and Iron Silicates BGas PAINTING INSPECTION QUESTION 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) Oxidising liquid which will attack steel (d) A substance which will conduct a current and be broken down by it BGas PAINTING INSPECTION QUESTION 3 Corrosion is defined as: (a) (b) (c) (d) Rusting of the Cathode by electrophysical means Oxidation of a metal in contact with water Degradation of a material by chemical or electrochemical means Breakdown of the metal by hydrogen BGas PAINTING INSPECTION QUESTION 4 Hydrogen is evolved at: (a) (b) (c) (d) The Anode at all times The Cathode as corrosion takes place The Cathode in the form of hydrogen gas The Anode as corrosion takes place BGas PAINTING INSPECTION QUESTION 5 Which Blasting Grade best describes “Thorough Blast cleaning”? (a) (b) (c) (d) Sa 2 Sa 2½ Sa 3 Sa 1 BGas PAINTING INSPECTION QUESTION 6 What is the minimum standard of surface cleanliness specified by SPA1 of BGC/PS/PA 10? a) Rust Grade C b) St 3 c) Sa 2 1/2 d) 30 to 75 microns BGas PAINTING INSPECTION QUESTION 7 In a corrosion Circuit, Electrons flow from: a) Anode to Cathode, via Electrolyte b) Positive to Negative c) Electrolyte to Steel d) Cathode to Anode, via Electrolyte BGas PAINTING INSPECTION QUESTION 8 Rust Grade A can be described as: (a) Tightly adhering Millscale, with evident heavy pitting (b) Clean white metal (c) Tightly adhering Millscale, with no apparent corrosion (d) Millscale which has begun to flake, or can be scraped away BGas PAINTING INSPECTION QUESTION 9 Abrasive used on site for British Gas projects must be: a) b) c) d) Mixed with sand, to reduce cost Dried in an oven prior to use Expendable Used up to a maximum of three times only. BGas PAINTING INSPECTION QUESTION 10 Which is the more noble metal: A) Steel B) Aluminium C) Magnesium D) Tin BGas PAINTING INSPECTION QUESTION 11 Millscale is made up of which three oxide compounds? A) Rust, Iron oxide, and Scale B) RSJ, RSC, and RSA C) Wustite, Magnetite, and Haematite D) Iron Sulphate, Iron Chloride, and Iron Phosphate BGas PAINTING INSPECTION QUESTION 12 Two factors to be considered when inspecting a Surface Preparation, are: A) Cleanliness and Roughness B) Rust Grade and material type C) Abrasive type and Time D) Surface area and type of contamination BGas PAINTING INSPECTION QUESTION 13 The Galvanic List is also known as: A) The Metallic Corrosion Potential Chart B) The Electromotive Forces Series C) The Element Forces Order D) The Electronic Chemical Series BGas PAINTING INSPECTION QUESTION 14 When using a Venturi Nozzle at 100psi, the abrasive exits at approximately what speed? A) 200 mph B) 450 mph C) 1200 mph D) 100 mph BGas PAINTING INSPECTION QUESTION 15 At the beginning of the corrosion process the iron atom changes it’s polarity from: Neutral to Positive. Neutral to Negative Positive to Negative. Positive to Neutral BGas PAINTING INSPECTION QUESTION 16 The thickness of Millscale is approximately: (a) (b) (c) (d) 25 μm to 100 μm 100 to 150 μm zero Dependant upon the material thickness BGas PAINTING INSPECTION QUESTION 17 ‘The force required to separate two surfaces in contact’, can also be termed: A) Viscosity B) Profile C) Adhesion D) Blasting BGas PAINTING INSPECTION QUESTION 18 Blasting in one area for too long, produces what? A) Hackles B) Rogue Peaks C) Slivers D) Laminations BGas PAINTING INSPECTION QUESTION 19 Metallic Shot also has which affect upon the material? A) Stress relieves B) Physically deforms C) Work hardens D) Causes Slivers BGas PAINTING INSPECTION QUESTION 20 What is the main cause of flash rusting on a substrate? A) Rogue Peaks B) Oxygen C) Hackles D) Hygroscopic Salts BGas PAINTING INSPECTION QUESTION 21 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 BGas PAINTING INSPECTION QUESTION 22 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 BGas PAINTING INSPECTION QUESTION 23 Three factors which accelerate the rate of 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 BGas PAINTING INSPECTION QUESTION 24 How many Abrasive Blast Cleaning photographs are in BS 7079 part A? (a) (b) (c) (d) 4 14 8 16 BGas PAINTING INSPECTION QUESTION 25 British Gas PA 10 specifies a surface profile of: A) 30 microns to 75 microns B) 100 microns to 150 microns C) 10 microns to 40 microns D) More than 90 microns BGas PAINTING INSPECTION QUESTION 26 Which of the following is Rust Grade C? A) Tightly adhering Millscale which can be brushed clean B) Loosely adhering Millscale with no evident pitting C) Millscale almost totally removed, visible rust, no heavy pitting D) Heavy pitting clearly visible, heavy corrosion BGas PAINTING INSPECTION QUESTION 27 The optimum pressure to achieve 100% efficiency in abrasive blast cleaning is? A) 75 psi B) 450 psi C) 100 psi D) 220 psi BGas PAINTING INSPECTION QUESTION 28 Sand is not permitted as a dry blast abrasive, as directed by: A) BGC/PS/PA10 B) BS 7079 Part A C) COSHH D) BS 410 BGas PAINTING INSPECTION QUESTION 29 How many times can Garnet be used as an abrasive for BGas site use? A) Up to 3 times, if cleaning of abrasive is possible B) None C) As per the specification. D) 20 times BGas PAINTING INSPECTION QUESTION 30 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 BGas PAINTING INSPECTION QUESTION 31 Flame cleaning uses which mechanisms? A) Expansion, Decontamination, and Force B) Oxidation, Penetration, and De-lamination C) Heat Penetration, Expansion, and Dehydration D) Oxidation, Weathering, and Pressurisation BGas PAINTING INSPECTION QUESTION 32 Carbon Impregnated hoses are used to: A) Create static electricity B) Prevent Static electricity C) Reduce Friction D) Reduce static electricity BGas PAINTING INSPECTION QUESTION 33 One of the most important safety items of equipment in abrasive blasting is: A) Dry abrasive mix B) The banana gauge C) Dead mans handle D) 100 psi compressor BGas PAINTING INSPECTION QUESTION 34 What is the approximate speed of the abrasive particles exiting a wheelabrator? A) 450 mph B) 220 mph C) Mach 3 D) 100 psi BGas PAINTING INSPECTION QUESTION 35 Where would you normally use a comparator gauge? A) To check surface cleanliness B) To determine surface roughness C) To control cleaning of abrasives D) To assess the rust grade of a material BGas PAINTING INSPECTION QUESTION 36 “Amplitude” refers to what? A) The ‘peak-to-trough’ height of a blast profile B) The amount of noise a blasting operation creates C) the velocity of the abrasive particles D) the roughness of an abrasive particle BGas PAINTING INSPECTION QUESTION 37 What is the material used in surface replica tape, used to measure profile? A) Mylex B) Testrex C) Mylar D) Mylon BGas PAINTING INSPECTION QUESTION 38 Using the correct calibration shim, a banana gauge can be calibrated on: A) Bare steel B) Painted surfaces C) Steel with a blast cleaned surface. D) Any metal surface BGas PAINTING INSPECTION QUESTION 39 The test for the presence of Hygroscopic Salts, is: A) Potassium Hexacyanoferrate test B) Copper Sulphate test C) Iron Phosphate test D) Iron Chromate test BGas PAINTING INSPECTION QUESTION 40 How many photographs of flame cleaning standards are shown in BS 7079 Part A? A) 4 B) 14 C) 8 D) 16 BGas PAINTING INSPECTION QUESTION 41 Which abrasive has the effect of stress relieving the substrate? A) Copper Slag B) Metallic Shot C) Steel Grit D) Garnet BGas PAINTING INSPECTION QUESTION 42 Where would it be advisable to use Steel Grit as an abrasive? A) When a deep profile is required B) On high pressure pipework C) In enclosed blasting units D) On offshore installations BGas PAINTING INSPECTION QUESTION 43 What is the minimum number of readings required for a Dial Micrometer? A) Minimum of 10 B) Minimum of 12 C) One only D) As many as you wish, but the average reading is recorded BGas PAINTING INSPECTION QUESTION 44 Which test would be used to determine for soluble salts in a marine environment? A) Potassium Hexacyanoferrate B) Copper Sulphate C) Iron Phosphate D) Silver Nitrate BGas PAINTING INSPECTION QUESTION 45 The standard for the test sieves used for the sizing of abrasives is: A) BS 7079 Part A B) BS 410 C) BGC / PS / PA10 D) SI 1657 BGas PAINTING INSPECTION QUESTION 46 The most common type of abrasive used for BGas site work is: A) Copper Slag B) Grit & Shot mix C) Garnet D) Metallic Shot BGas PAINTING INSPECTION QUESTION 47 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 BGas PAINTING INSPECTION QUESTION 48 Anchor Pattern, Key, Peak-to-trough, are names given to what? A) The abrasive properties B) the cross section of a blast C) The total area of blasted substrate D) The potential of adhesion BGas PAINTING INSPECTION QUESTION 49 What is a “knock out pot”? A) A drum used for mixing paint and thinners B) The area on the equipment where static electricity can build up and be hazardous C) A vessel for removing oil and moisture from the air stream D) A container where any blockages of the nozzle can be tapped free BGas PAINTING INSPECTION QUESTION 50 High Pressure wet blasting operates up to which pressure? A) 100 psi B) 450 psi C) 30,000 psi D) 2,250 mph BGas PAINTING INSPECTION QUESTION 51 Which of the following is not a drying mechanism? a) Coalescence b) Oxidation c) Stove drying d) Chemical curing BGas PAINTING INSPECTION QUESTION 52 A solution is: a) The resultant liquid in a polymerisation event b) The resultant liquid after dispersing a solid c) The resultant liquid after dissolving a material in another liquid d) The resultant liquid after dispersing a liquid in another liquid BGas PAINTING INSPECTION QUESTION Which of the following is a natural oil? a) Dammar b) Alkyd c) Castor d) Xylene 53 BGas PAINTING INSPECTION QUESTION 54 Which of the following are said to be “reversible”? A) Cross-Linked Polymer B) Branched Polymer C) Linear Polymer D) Convertible coating BGas PAINTING INSPECTION QUESTION 55 Which of the following are Quantitative tests? a) Potassium Hexacyanoferrate b) Copper Sulphate c) Silver Nitrate test d) Bresle Sample Patch BGas PAINTING INSPECTION QUESTION 56 A Whirling Hygrometer is also called a : a) Pfund Cryptometer b) A Psychrometer c) A Pyknometer d) A Rotational Viscometer BGas PAINTING INSPECTION QUESTION 57 What is the meaning of “compliant”? a) b) c) d) In accordance with PA 10 In accordance with Environmental Protection Act As per engineers instructions As per manufacturers recommendations BGas PAINTING INSPECTION QUESTION 58 What is the recommended stand-off distance and speed at which the abrasive leaves a Venturi Nozzle? a) 450 mm and 220 mph b) 220 mm and 450 mph c) 220 mm and 220 mph d) 450 mm and 450 mph BGas PAINTING INSPECTION QUESTION 59 A typical remedy for burnishing would be: a) Power brushing b) Emery Paper or similar c) Needle gun d) Addition of thinners BGas PAINTING INSPECTION QUESTION 60 Which of the following is part of the Footners Duplex System? 0 a) 1-2% Sulphuric Acid @ 65-80 C for 5-25 mins 0 b) 5-10% Sulphuric Acid @ 70-80 C for 5-10 mins 0 c) 5-10% Sulphuric Acid @ 65-70 C for 5-25 mins 0 d) 5-10% Chromic / Phosphoric Acid @ 65-70 C for 1-2 mins BGas PAINTING INSPECTION QUESTION 61 Which of the following is not a natural resin? a) b) c) d) Copal Amber Dammar Linseed BGas PAINTING INSPECTION QUESTION 62 Which of the following is not a natural Oil? a) b) c) d) Castor Amber Olive Linseed BGas PAINTING INSPECTION QUESTION 63 Which of the following is an extender? a) b) c) d) Graphite Mica Glass Flake China Clay BGas PAINTING INSPECTION QUESTION 64 Which of the following is an opaque pigment? a) b) c) d) Graphite Compound of Chromium Zirconium Octoate Zinc Phosphate BGas PAINTING INSPECTION QUESTION 65 Which of the following is an “additive”? a) b) c) d) Opaque pigments Rust Inhibitive pigments Thickening agents Thinners BGas PAINTING INSPECTION QUESTION 66 What is the specified minimum standard of cleanliness required by BGas for non-ferrous substrates? a) b) c) d) Sa 2 1/2 Sa 3 St 1 Sa 1 BGas PAINTING INSPECTION QUESTION 67 Which of the following binders are reversible? a) b) c) d) Epoxy Urethane Chlorinated Rubber Silicone BGas PAINTING INSPECTION QUESTION 68 What is the maximum allowable time lapse between surface preparation, and painting? a) b) c) d) 24 hours 4 hours 20-30 minutes 7 days BGas PAINTING INSPECTION QUESTION 69 Which of the following is not a commonly used binder? a) b) c) d) Epoxy Zinc Urethane Vinyl BGas PAINTING INSPECTION QUESTION 70 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 BGas PAINTING INSPECTION QUESTION 71 What is the cause of rash rusting? A) Oxygen B) Rogue Peaks C) Hackles D) Hygroscopic Salts BGas PAINTING INSPECTION QUESTION 72 Which of the following are commonly used as anti-settling agents? A) Heavy metal salts B) Bentones & Waxes C) Saturated oils D) Extender pigments BGas PAINTING INSPECTION QUESTION 73 A paint drying by chemical reaction is said to be: A) Linear polymer B) Convertible C) Non-Convertible D) Reversible BGas PAINTING INSPECTION QUESTION 74 Which of the following is not a laminar pigment? A) Graphite B) Glass flake C) Magnesium Silicate D) Mica BGas PAINTING INSPECTION QUESTION 75 Which two materials are commonly used as sacrificial anodes? (a) (b) (c) (d) Copper and Tungsten Aluminium and Graphite Zinc and Aluminium Lead and Tin BGas PAINTING INSPECTION QUESTION 76 What is a pyknometer? a) Opacity testing equipment b) Whirling Hygrometer c) Density Cup d) Windspeed measuring equipment BGas PAINTING INSPECTION QUESTION 77 What is the name of the mill used to produce mastics, fillers, and putties? a) Triple Roll Mill b) Ball Mill c) Single Roll Mill d) Bead Mill BGas PAINTING INSPECTION QUESTION 78 Which of the following is not an adhesion test? a) Dolly test b) Cross hatch c) Krebs Stormer d) HATE BGas PAINTING INSPECTION QUESTION 79 Which of the following is not a drying test? a) Koenig Albert b) Beck Koller c) Mechanical Thumb d) Ballotini BGas PAINTING INSPECTION QUESTION 80 What is the name given to the drying test involving the use of glass beads? a) Wolff Wilborne b) Taber c) Ballotini d) Erichsson BGas PAINTING INSPECTION QUESTION 81 What type of machinery is used to produce large production runs of popular paints? a) Triple Roll Mill b) Colloid Mill c) Kady Mill d) Sand Mill BGas PAINTING INSPECTION QUESTION 82 A typical pot life of a paint used in BGas specifications would be: a) 20 - 30 minutes b) 12 - 24 hours c) 6 - 8 hours d) 3 - 7 days BGas PAINTING INSPECTION QUESTION 83 What is the specified temperature at which a Flash Point Determination test must be carried out? a) b) c) d) 200C Up to 450 0C There is no specific temperature 25 0C in seawater BGas PAINTING INSPECTION QUESTION 84 HATE is an abbreviation of what? a) High Adhesive Tension Equipment b) Humidity Affected Electrical Tolerance c) Hydraulic Adhesion Test Equipment d) Hardness And Temperature Evaluation BGas PAINTING INSPECTION QUESTION 85 In paint testing, why is temperature cycling carried out? a) b) c) d) To check for water absorption To check flexibility To check contraction cracking To prove the service life of the coating system BGas PAINTING INSPECTION QUESTION 86 Which of the following would not affect the degree of Gloss? a) b) c) d) Surface profile Critical Pigment Volume Concentration Solvent type Degree of dispersion BGas PAINTING INSPECTION QUESTION 87 What diameter is the conical mandrel, which is used in the flexibility test? a) b) c) d) 8 mm to 25 mm 12mm to 18mm 5mm to 50mm 3mm to 37mm BGas PAINTING INSPECTION QUESTION 88 What is the name of the equipment used to determine particle aggregate size? (a) (b) (c) (d) Beck-koller Hegman gauge Wolfe-Wilborne Krebs-Stormer BGas PAINTING INSPECTION QUESTION 89 What product should be used for repairs to pipe coatings in damp conditions? a) Moisture sensitive isocyanates b) Water-Borne Acrylics c) Moisture curing polyurethane d) Chlorinated Rubber BGas PAINTING INSPECTION QUESTION 90 What surface preparation is specified in PA 10 for weathered galvanised steel? a) b) c) d) Sa 2 1/2, followed by “T-Wash” mordant primer Sa 3, followed by etch primer Hand abrasion with a stiff bristled brush only Sa 1 followed by water washing. BGas PAINTING INSPECTION QUESTION 91 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) Inform the Engineer d) add an extra protective coating BGas PAINTING INSPECTION QUESTION 92 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 BGas PAINTING INSPECTION QUESTION 93 What is the name of the vessel used to determine the viscosity of free flowing fluids, as per BGas specifications? A) Ford Flow cup No 4 B) Zahn cup C) Abel cup D) Pyknometer BGas PAINTING INSPECTION QUESTION 94 Which of the following is not a test for contaminants? A) Sellotape B) Banana gauge C) Talcum powder D) Solvent BGas PAINTING INSPECTION QUESTION 95 The BGas specified site painting conditions are: A) Maximum wind speed 4 m/sec, Relative Humidity maximum 95% B) Maximum 90% Relative Humidity, Dew Point 3 0 C above Steel C) Maximum 90% Relative Humidity, Dew Point 3 0 C less than Steel D) Maximum 27 0C, Relative Humidity 95% maximum BGas PAINTING INSPECTION QUESTION 96 Which test would be used to determine for soluble salts in a marine environment? A) Potassium Hexacyanoferrate B) Sulphuric Acid C) Iron Phosphate D) Silver Nitrate BGas PAINTING INSPECTION QUESTION 97 Which of the following is an extender pigment? a) Magnesium Silicate b) Aluminium Oxide c) Manganese Napthanate d) Barium Metaborate BGas PAINTING INSPECTION QUESTION 98 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% BGas PAINTING INSPECTION QUESTION 99 According to PA10, what is the correct course of action upon discovering foreign bodies embedded in the paint film? a) b) c) d) Apply an extra protective barrier coat Re-blast, and re-coat Lightly abrade with emery paper, apply stripe coat Make a report to the engineer only BGas PAINTING INSPECTION QUESTION 100 According to PA10, is the addition of Thinners allowed? a) b) c) d) yes, at the engineers discretion, up to 20% max. only if the paint is difficult to apply yes, in accordance with the product data sheets No, under no circumstances BGas PAINTING INSPECTION QUESTION 101 This paint defect is referred to as: A) Flaking B) Chalking C) Grinning D) Cissing BGas PAINTING INSPECTION QUESTION 102 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 BGas PAINTING INSPECTION QUESTION 103 What is the name of the equipment used to determine particle aggregate size? (a) (b) (c) (d) Beck-koller Hegman gauge Wolfe-Wilborne Krebs-Stormer BGas PAINTING INSPECTION QUESTION 104 What are the 3 attributes, which make up the colour of a paint? (a) (b) (c) (d) White, black, and primary colour Hue, brightness and saturation Red, yellow, and blue Contrast, density, and definition BGas PAINTING INSPECTION QUESTION 105 What voltage settings are commonly used for sponge test holiday detection? A) 5 Kv to 15 Kv B) 15 Kv maximum C) 9v to 90 v D) 110v or 240v BGas PAINTING INSPECTION QUESTION 106 This is the hazard warning symbol for: a) Toxic or Very Toxic b) Harmful or Irritant c) Corrosive d) Explosive BGas PAINTING INSPECTION QUESTION 107 Another name for a Vapour Trap is? (a) (b) (c) (d) Air wash cup Dry out pot Knock out pot Pressure regulator BGas PAINTING INSPECTION QUESTION 108 Beryllium Bronze is a material used in the manufacture of: (a) (b) (c) (d) Welding electrodes Power wire brushes Comb gauges Venturi Nozzle liners BGas PAINTING INSPECTION QUESTION 109 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 BGas PAINTING INSPECTION QUESTION 110 When carrying out holiday detection using the sponge tester, what can we add to the water? a) Salt b) Detergent c) Xylene d) Inhibitor BGas PAINTING INSPECTION QUESTION 111 What would be the main problem of a low CPVC? (a) High opacity (b) Permeability (c) Low Gloss (d) Low opacity BGas PAINTING INSPECTION QUESTION 112 BGC/PS/PA10 contains which table, specifying the preferred coating systems? A) Spa 6a B) Spa 1e C) Spa 4a D) spa 3c BGas PAINTING INSPECTION QUESTION 113 Thermally Sprayed Aluminium is normally applied by which system? A) Electric arc spray B) Sheradising C) Wire & Pistol D) Electro-plating BGas PAINTING INSPECTION QUESTION 114 ‘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 BGas PAINTING INSPECTION QUESTION 115 Which of the following is not a system for paint colour classification? A) BS 4800 B) BS 5252 C) Munsell D) BGC/PS/CW5 BGas PAINTING INSPECTION QUESTION 116 When testing for Xylene using a Drager Bellows, the crystals will change colour : A) Orange to Black B) White to Red/Brown C) White to Green D) White to Black BGas PAINTING INSPECTION QUESTION 117 Which pH range covers Acids? A) 7 to 14 B) 0 to 7 C) 0 to 14 D) 5 to 10 BGas PAINTING INSPECTION QUESTION 118 What is the specified abrasive overlap requirement on repair areas? A) 250 mm B) twice pipe diameter C) 100 mm D) 1 metre BGas PAINTING INSPECTION QUESTION 119 The specified method of removal of this of type of contamination is: A) Dry abrasive blasting B) Hand abrasion C) Xylene D) High pressure washing BGas PAINTING INSPECTION QUESTION 120 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 BGas PAINTING INSPECTION QUESTION 121 Which would be considered to be the most toxic? A) Acetone B) Xylene C) Ethanol D) Toluene BGas PAINTING INSPECTION QUESTION 122 The document issued by the HSE listing all known harmful substances, is: A) COSHH B) SI 1657 C) EH40 D) IGE SR 21 BGas PAINTING INSPECTION QUESTION 123 In the electrostatic spray painting process, the component must be: A) Positively charged B) Negatively charged C) 9 volts DC D) 15 Kv DC BGas PAINTING INSPECTION QUESTION 124 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 BGas PAINTING INSPECTION QUESTION 125 This is caused by: A) Expansion and contraction B) Age and environment C) Solvent strength D) Surface contamination