Closed Book API 510 Practice Exam A
Question 36 begins the closed book portion of this exam!
It is recommended that you take this portion without referring to the ASME Code
or API books on your first attempt, to assess your strengths and concentrate your
studies on the most needed subject areas. It is suggested that you write your answers
on a separate sheet to keep this copy clean for future studies.
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Closed Book API 510 Practice Exam A
36. What is the greatest allowed time between the testing of pressure relieving devices per API 510?
1.
2.
5 years.
Pressure relief valves shall be tested at intervals that are frequent enough to verify that the valves
perform reliably.
10 years.
Pressure relief devices must be tested at every shutdown.
3.
4.
37. Who is responsible for the rerating calculations of a vessel?
1.
2.
3.
4.
The manufacturer or an owner-user engineer (or his designated representative).
The chief inspector and the unit engineer.
The API authorized inspector
A professional engineer only, is allowed to perform these calculations.
38. If the requirements of API 510 are met who determines if a temporary fillet weld patch may be used in
a repair?
1.
2.
3.
4.
The API authorized inspector.
An engineer competent in pressure vessel design and the API authorized inspector.
A repair concern which holds a valid NBIC R stamp.
Any of the above.
39. The maximum carbon content of weldable steel per ASME Code is?
1.
2.
3.
4.
.35 %
.035 %
.0035 %
3.5 %
40. Per API 510 what is the recommended shell temperature during a hydrostatic test of a vessel 1” thick?
1.
2.
3.
4.
30 o F above ambient.
65 o F above ambient.
10 o F above MDMT.
30 o F above testing liquids temperature.
41. If you were looking for the last date that a pressure relief valve was set, where should this information
always be?
1.
2.
3.
4.
In the product literature from the valve company.
The API 510 mandatory computer inspection records.
Relief valve’s tag.
In the records of the repair shop.
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Closed Book API 510 Practice Exam A
42. In what two ways may the probable corrosion rate for a new vessel be determined before the first
internal inspection?
1.
2.
3.
4.
Corrosion tabs and UT readings.
Consult Psychic Hot Line and Mr. Wizard.
Ask a more experienced inspector or engineer
From data collected on vessels providing the same or similar service or from published data on
vessels providing comparable service.
43. A vessel is to undergo a hydrostatic test after an alteration; the test pressure will be 785 psi. Using
standard commercially available gauges what is the minimum and maximum gage pressure range
acceptable for this test?
1.
2.
3.
4.
0-1000 to 0-3000 psi
0-1500 to 0-3000 psi
0-1000 to 0-2500 psi
0-850 to 0-1500 psi
44. Which of the following should a progressive record for a pressure vessel contain?
1.
2.
3.
4.
The exact location on a plot plan.
The piping schedule for the vessel.
A complete weld map from the original construction plans.
Construction and design information, operating and inspection history.
45. If performing an external inspection of a vessel what consideration need be given the external
insulation?
1.
2.
3.
4.
It shall always be removed to inspect underneath.
If insulation is in good condition and the vessel operates within the high and low temperatures
stated in API 510, removal of insulation is not necessary for inspection of the vessel.
Select portions must be removed for inspections.
You may not use any plug locations used for UT thickness reading to inspect the vessel.
46. What must be considered important in the inspection of a metallic lining?
1.
2.
3.
4.
That there are no dissimilar welds.
That the linings made of pure alloy only.
That vent holes exist in all liners.
That there are no holes or cracks present in the lining.
47. What must be done prior to using special inspection procedures after an alteration to a vessel in place
of a hydrostatic test?
1.
2.
3.
4.
Check with the NBIC Authorized inspector.
Consult with the chief inspector of the jurisdiction.
Make certain it is permitted by any jurisdictional rules that may exist and consult with an engineer
experienced in pressure vessel design and the Authorized Pressure Vessel Inspector.
Review all NDE procedures prior to commencement of the NDE used to waive the hydrostatic test
requirement.
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Closed Book API 510 Practice Exam A
48. If the corrosion rate of a vessel is determined to be less than a given amount per year, it is possible to
exempt the vessel from internal inspections. What is the value of the corrosion rate that cannot be
exceeded?
1.
2.
3.
4.
0.001”per year
0.001” between inspections not to exceed 5 years between inspections.
0.005” per year.
0.005” between inspections not to exceed 3 years between inspections
49. What may happen if vessels are subjected to temperatures above design?
1.
2.
3.
4.
The relief device may fail.
The rupture disk may implode.
Phosphoric granulation at the grain boundaries.
Creep of the vessel’s material may occur.
50. The definition of pressure vessels is;
1.
2.
3.
4.
A vessel for the containment of process fluids with or without internal pressure.
A container designed to operate below atmospheric pressure.
A container no greater than 6” in cross section.
A container designed to withstand internal or external pressure.
51. Which is the most severe stress caused by internal pressure in a cylindrical shell?
1.
2.
3.
4.
Circumferential stress acting along the longitudinal axis.
Longitudinal stress acting along the longitudinal axis.
Circumferential stress acting along the circumferential axis.
Longitudinal stress acting along the circumferential axis.
52. Of the following heads; which is normally required to be the thickest all things being equal?
1.
2.
3.
4.
Hemispherical
Flanged and dished
2 to 1 elliptical
Forged flat heads
53. The maximum interval between external visual inspections for an above the ground vessel is;
1.
2.
3.
4.
Three years
Ten years
Five years
There is no maximum interval.
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Closed Book API 510 Practice Exam A
54. What is the maximum inspection interval for a vessel with a remaining safe operating life of less than
four years?
1.
2.
3.
4.
The full remaining safe operating life up to a maximum of 4 years.
The full remaining safe operating life up to a maximum of 2 years.
The full remaining safe operating life up to a maximum of 1 year.
The full remaining life of the vessel.
55. What does the term construction code mean, as it regards repairs to a pressure vessel?
1.
2.
3.
4.
The current ASME Code edition.
The NBIC
The Code the vessel was constructed to including non-standard and jurisdictional special vessels.
The API 510 Code.
56. What Code is used to evaluate a vessel after it has been placed in service?
1.
2.
3.
4.
ASME Section VIII
ASME Section V
API 510
RP 572
57. When a vessel is to be entered for inspection which of the following precautions should be observed?
1.
2.
3.
4.
The area should be roped off and no one else is to be working in the area.
Inspect the vessel for proper electrical grounding if a thunderstorm is in the area.
All hot work permits in the immediate area must be revoked until the inspection is complete
OSHA rules should be reviewed and followed where applicable.
58. Liquid penetrant inspection can find which type of discontinuity?
1.
2.
3.
4.
Internal cracking of welds.
Cracks open to the surface.
Subsurface porosity.
subsurface plate laminations.
59. For proper internal or external visual inspection surfaces must be:
1.
2.
3.
4.
Wire brushed.
Walnut shell blasted.
Hydro blasted.
The type of surface preparation depends on individual circumstances and could be any of the
above.
60. Who normally performs welder certification test, that is, which organization is responsible for
performance and acceptance?
1.
2.
3.
4.
Inspection department
Company employing the welder
OSHA
The company safety department.
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Closed Book API 510 Practice Exam A
61. What is the definition of a construction code?
1.
2.
3.
4.
Any standard used to repair vessel
Any technique of construction.
Any standard used to build a vessel.
The Code or standard to which a vessel was originally built.
62. Of the following tools which should the inspector have on hand for vessel inspections?
1.
2.
3.
4.
Pencil and note pad, flash light and scraper.
Social security card.
Clean fire retardant clothing.
Electrical conductivity testing equipment to test liners.
63. The purpose of a Welding Procedure Specification and its Procedure Qualification Record is:
1.
2.
3.
4.
To make sure every one involved in the repair process has a listing of nonessential variables
Make sure the welder follows the essential variables
To prove the weld will provide the required properties
Keep testing labs in business
64. Many of the problems that develop in operating vessels may be traced to;
1.
2.
3.
4.
Cold winters
On-Stream inspections
Electrical shorts
Faulty materials and workmanship
65. The maximum content of iron in a nonferrous metal is
1.
2.
3.
4.
35%
50%
75%
45%
66. Which of the following types of over pressure protection is not found on a pressure vessel?
1.
2.
3.
4.
Safety Relief
Pilot Operated
Rupture Disk
Pressure/Vacuum Vent
67. If steel of a vessel has exceeded its yield point upon the removal of pressure and heat it will;
1.
2.
3.
4.
return to its original shape
contain a permanent deformation
split or rupture
be oblong
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Closed Book API 510 Practice Exam A
68. Of the types of stresses placed on a thin walled cylinder the most severe is;
1.
2.
3.
4.
Circumferential
Longitudinal
Compressive
Radial
69. The report for qualifying a welder is:
1.
2.
3.
4.
WPS
PQR
WPQ
WQR
70. Which of the following inspection techniques requires direct visual examination of the test specimen?
1.
2.
3.
4.
Radiography testing
Ultrasonic testing
Magnetic particle
Eddy current
71. A welding procedure is a detailed plan developed by whom to ensure sound welds.
1.
2.
3.
4.
API-510 Inspector
Welder
Quality Control Manager
Fabricator
72. The primary cause of deterioration in pressure vessels is:
1.
2.
3.
4.
Corrosion
Operating conditions
Improper installation
Water damage
73. High pressure may develop in a vessel as a result of:
1.
2.
3.
4.
Rapid venting of a vessel’s pressure source
Lowering heat below normal operating conditions
Thermal contraction of trapped fluids
Blocking off against a pressure source
74. Which of the following techniques is considered the primary means to determine the minimum
thickness of a vessel’s components?
1.
2.
3.
4.
A boat sample remove from a thin area
Measuring from a corroded area
Any suitable destructive method of examination
Ultrasonic thickness measurements.
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Closed Book API 510 Practice Exam A
75. The rules for impact testing of carbon steel in Section VIII vessel materials require what kind(s) of
impact test.
1.
2.
3.
4.
Brinell & Rockwell
Izod & Charpy V-notch
Charpy V-notch only is acceptable.
Brinell only is acceptable
76. You have measured undercut on a girth weld during the repair to a vessel, it was found to be 1/32 inch
in depth. The base metal is 2 inches thick, and you should?
1.
2.
3.
4.
Reject the weld.
Accept the weld.
Consult the API 510 Code for accept/reject criteria before making a decision.
Consult with the Chief Inspector or Engineer.
77. What is the minimum length of weld metal to be radiographed for a Welder’s Performance
Qualification using an NPS 6 inch pipe coupon made of P No 5 materials utilizing the SMAW process?
1.
2.
3.
4.
Six inches of weld metal
The entire circumference of the pipe coupon
Stops and starts only
None, not allowed by Section IX
78. The API authorized pressure vessel inspector may give prior authorization for repairs that do not
involve;
1.
2.
3.
4.
Pressure tests
Radiography
Pneumatic testing
Final visual inspections
79. The two types of impact tests required by Section VIII Div. 1 are;
1.
2.
3.
4.
Izod and Drop Weight
Brinell and Rockwell
Charpy and Drop Weight
Weld metal and Base metal
80. In Section VIII Div. 1 acceptance of a radiograph is based on;
1.
2.
3.
4.
the speed of the film used.
the geometric unsharpness of the image.
the absence of backscatter.
the ability to see the essential hole or wire, if a wire type IQI is used.
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Closed Book API 510 Practice Exam A
81. A spot radiograph of a butt weld in a 1 inch thick shell of a vessel marked RT-3 was found to have a
rounded indication, the dimension of such an indication according to Section VIII Div. 1 is;
1.
2.
3.
4.
1/32 of an inch.
1/3 of an inch.
2/3 of an inch
None, rounded indications are not a consideration with spot radiography.
82. Section VIII Div. 1, is very specific about the number of spot radiographs required when applying it
for quality control, the basic premise is to;
1.
2.
3.
4.
insure that all welds are made perfectly.
make sure someone is held responsible for any poor welding.
apply the radiographs immediately after welding in order to take corrective steps if needed.
fire as many welders as possible.
83. A P No. 1 material that is plate has been rolled into a cylinder and butt welded. The cylinder is exactly
1-1/4” thick, and it is used in the repair of a pressure boundary on a U stamped vessel, the following is a
true statement.
1.
2.
3.
4.
It must receive full radiography.
It may be not spot radiographed.
It may not be fully radiography.
It may receive spot, full, or no radiography depending on original the original U1 form.
84. Charpy impact tests are intended to prove that a material is;
1.
2.
3.
4.
tough at the desired MDMT of the vessel to be constructed using that material.
some what prone to brittle fracture.
acceptable for use in high temperature service.
not required to be heat treated.
85. According to Section IX, all welders must be re-tested for a process;
1.
2.
3.
4.
if they have not been tested before.
if they have not used a process in the past 9 months or longer.
if they have not used a process for the past 12 months or longer and have not been welding with
other processes.
if the welder’s ability to make sounds welds with process is in doubt.
86. The testing apparatus used, and the techniques for performing Charpy impact tests are found in;
1.
2.
3.
4.
Section VIII Div. 1 Paragraph UG-84
SA-270
SA-370
Section IX paragraph 401.32
87. An above the ground vessel is required to receive an external inspection;
1.
2.
3.
4.
Every 4 years.
At the half corrosion-rate life.
Every 10 years.
Every five years or at the same interval as the internal inspection whichever is less.
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Closed Book API 510 Practice Exam A
88. Before starting the inspection of a pressure vessel, especially one in severe service, the inspector
should determine;
1.
2.
3.
4.
The pressure and temperature conditions under which the vessel has been operated since the first
inspection.
The pressure and temperature conditions under which the vessel has been operated during the
period since the last two inspections.
The pressure and temperature conditions under which the vessel has been operated since the
current inspection.
The pressure and temperature conditions under which the vessel has been operated since the last
inspection.
89. The inability to draw the products of fractionation or distillation from certain trays may
1.
2.
3.
4.
indicate fouling or loss of tray parts in a process tower.
indicate that instrumentation is giving false readings.
prove that the piping diameter is too small.
indicate that the trays have lost all bubble caps or tray valves, or possibly the tray has collapsed.
90. Prior to witnessing a pneumatic test of a pressure vessel, which has been repaired by welding, the
inspector should;
1.
2.
3.
4.
Determine if the vessel has had all relief devices removed.
Observe that the digital pressure gage to be used for the test is of the proper range.
Check that the personnel conducting the test have been properly trained to perform hazardous
tests.
Make sure that the analog pressure gage is of the proper range for the test pressure.
91. Widely scattered pits may be ignored as long as the following are true:
a. No pit depth is greater than one half the vessel’s wall thickness exclusive of the corrosion allowance.
b. The total area of the pits does not exceed 7 square inches (45 square centimeters) within any 8-inch (20centimeter) diameter circle.
c. The sum of their dimensions along any straight line within the circle does not exceed 2 inches (5
centimeters).
d.?
What is the missing item in d above is?
1.
2.
3.
4.
The pit depths must be measured from the side the pit is located on.
The 8 inch diameter is to be measured from the center of the deepest pit.
There are no missing items there are only 3 items listed for this rule.
The total area of the pits cannot exceed 3.5 square inches in a 4-inch diameter circle.
92. The surface remote from a welded joint is determined as follows;
1.
2.
3.
4.
1 inch on either side of the weld or twice the minimum thickness which ever is greater.
1 inch on either side of the weld or twice the minimum thickness which ever is less.
For vessels with inside diameters less than 60 inches 20 inches or ½ the vessel diameter.
2 inches on either side of the weld.
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Closed Book API 510 Practice Exam A
93. Before any repair to a pressure vessel in accordance with its code of construction, what if any
additional requirements for inspection may need to be considered?
1.
2.
3.
4.
Jurisdictional requirements that might override the API 510 Code.
Who is doing the repair?
The quality of the repair materials.
The need for qualified welding procedures.
94. Some jurisdictions require that welded repairs to a pressure vessel be documented by the completion
and filing of;
1.
2.
3.
4.
A detailed report of the location and extent of repairs.
A qualifications record of all repair personnel.
A permit issued by the jurisdiction.
The National Board of Boiler and Pressure Vessel Inspectors Form “R-1”.
95. While inspecting an operating vessel you observe that cracks are present in the connecting welds for a
gauge glass, you also notice vibrations are occurring in the assembly. Before you recommend corrective
actions you should;
1.
2.
3.
4.
Re-evaluate the materials used in the fabrication of the gauge glass.
Write a report of the location with a recommendation for the type of repairs needed.
Research the inspection records for previous failures of this type.
Check with a pressure vessel engineer to see if the cracks are caused by fatigue failure.
96. Which of the following describes a type/s of rupture disks?
1.
2.
3.
4.
Multiple layer of graphite impregnated Kevlar fibers
Various metals - usually flat except steel.
Impervious graphite – un-bulged
Various metals, usually pre-bulged or impervious graphite, usually flat.
97. The two types of graphitization are;
1.
2.
3.
4.
Localized and random graphitization.
Ferritic and martensite graphitization.
Austenitic and martensitic graphitization.
Circular or globular graphitization.
98. The main reason(s) for inspecting heat exchanger bundles after removal and prior to cleaning is/are;
1.
2.
3.
4.
Location of scale on tubes can reveal non-operational problems.
Deposits on the tubes can reveal acid contamination problems.
Color of the tube ends can reveal de-zincification.
Color of deposits and scale can reveal corrosion problems.
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Closed Book API 510 Practice Exam A
99. Hydrogen chloride becomes a problem when;
1.
2.
3.
4.
Exposed to air, it will thermally react and result in a fire.
Exposed to water, it forms hydrochloric acid.
Exposed to water, it becomes unstable and can form an explosive compound.
Exposed to water and air it produces formic acid.
100. Which one of the following types of coating failures may not easily detected?
1.
2.
3.
4.
Film lifting.
Rust.
Blisters.
Film dispersions.
101. Are nondestructive procedures allowed in lieu of hydrostatic testing, if so what must be done?
1.
2.
3.
4.
Engineer experienced in pressure vessel design and the API inspector must be consulted.
The API inspector and NBIC inspector must be consulted.
The API inspector must be consulted.
An experienced engineer must be consulted.
102. A new vessel has been installed, what must be done in order accept the vessel for operation?
1.
2.
3.
4.
A first internal inspection.
A first internal inspection, however if a manufactures’ data report (U1) assuring that the vessel is
satisfactory for its intended service is available the first internal may be waived.
Base line thickness readings must be taken per OSHA 1920 (j).
Base line thickness reading must be taken per OSHA 1910(j).
103. A vessel is in a service that subjects it to acidic fluids, what is a major concern for this type of
service?
1.
2.
3.
4.
Graphitic induced corrosion.
Caustic blistering
Caustic embrittlement and cracking.
Accelerated corrosion, Hydrogen blistering, and Hydrogen induced cracking
104. Ordinarily non-metallic coatings and linings can be most effectively inspected by what technique?
1.
2.
3.
4.
Law holiday tester
Radiography
Hammer testing
Using a high voltage low current brush type electrode device. (Spark Tester)
105. A relief valve has been shipped lying down on its side; this is a problem because;
1.
2.
3.
4.
Relief valves are often heavy and are sometimes difficult to upright.
Flange faces may be damaged during shipment.
Springs in the valve may shift and distort and as a result not exert the same force on stems and
seats.
Springs may slip out and be lost during shipment.
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Closed Book API 510 Practice Exam A
106. A major concern(s) when inspecting a nozzle flange face is /are;
1.
2.
3.
4.
Brand name of the flange.
Brand name of the gaskets used in the flange.
Surface corrosion in the bolt circle.
Distortion of the flange and the condition of the gasket seating surfaces.
107. If there are leaks in a vessel’s insulation system or protective coatings, corrosion can occur. At below
what temperature is this corrosion most likely to be a problem?
1.
2.
3.
4.
250 oF
212 oF
350 oF
275 oF
108. Which of the following is subject to de-alloying when exposed to steam containing sulfur
compounds?
1.
2.
3.
4.
Cuppro brass.
Naval brass.
Admiralty brass.
Monel.
109. Titanium alloys are subject to loss of ductility in certain environments, what is this condition called?
1.
2.
3.
4.
High temperature embrittlement.
Low temperature embrittlement.
Hi-alloy effect.
Hydriding.
110. Which of the following normally determines the frequency of shop inspection/overhaul of a relief
device?
1.
2.
3.
4.
Normal Basis.
Manufacturer’s Basis.
Other Basis.
Inspector’s basis and analysis.
111. Which of the following describes a crack in metal?
1.
2.
3.
4.
Cracks run parallel to the surface.
Cracks run at right angles to the surface.
Cracks are usually wide at one end and narrow at the other.
Cracks run at obtuse angles to the surface.
112. Which of the following describes a lamination in metal plate?
1.
2.
3.
4.
Laminations usually represent large cavities.
Laminations are fish mouth type openings and are only found on the edges of plate.
Laminations run at a slant to the plate surface.
Laminations run at an obtuse angle to the plate surface.
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Closed Book API 510 Practice Exam A
113. Above what temperature must hydrogen attack be considered a concern in an operating carbon steel
vessel?
1.
2.
3.
4.
above 650 oF
below 650 oF
below 450 oF
above 450 oF
114. After removing an exchanger bundle you find a Prussian blue coating on the tubes, what do you
suspect causes this coating?
1.
2.
3.
4.
Amino acid.
Cyanide.
Ferri-ferrocyanide.
Phosphoric acid.
115. One major area of concern when inspecting guy wires for a vessel is crevice corrosion, where does
this occur?
1.
2.
3.
4.
On the free end of the turn buckle.
In the threaded areas
On the guy wires.
Where the wires contact the ground.
116. You are inspecting a failure in a vessel wall, what conditions would you look for if it was believed
that the fracture was brittle?
1.
2.
3.
4.
There is almost a no lack of ductility.
The fractured surfaces has a smooth surface
The surface of the crack would have jagged edges.
There is an almost complete lack of ductility and the failure site will have a faceted surface.
117. What is the ideal time to inspect pressure relief valves?
1.
2.
3.
4.
When the unit is in operation.
When the unit is out of operation.
For relief valves when the boiler is undergoing Jurisdictional Inspections.
When the inspection least interferes with the process and maintenance manpower is readily
available.
118. Temper embrittlement is best described as;
1.
2.
3.
4.
Cracking due to operating at high temperatures above 700 degrees F.
Loss of ductility and notch toughness due to exposure above 700 degrees F.
Flaking of the metal surfaces, causing dip pits.
Cracking due to low temperature service.
119. Carbon dioxide considered corrosive when?
1.
2.
3.
4.
When combined with glycol.
When combined with water.
When combined with ethylene.
When combined with water and high temperatures.
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Closed Book API 510 Practice Exam A
120. If white salts are found at cracks in a vessel;
1.
2.
3.
4.
it is an indication that the vessel contains an alkaline based chemical
it is an indication that the vessel contains an acidic based chemical
it is an indication that the vessel contains a low pH chemical
it is an indication that the vessel had been operated above normal temperatures
121. The first consideration that must be given when the half bead temper bead technique of repair is
proposed should be;
1.
2.
3.
4.
Consultation with the jurisdiction.
Time required to do the repair, and personnel safety.
Suitability for a given fluid service and any corrosion resistance required.
Close monitoring of the welding operation.
122. A poor choice of material for ammonia service would be;
1.
2.
3.
4.
Stainless steels.
Copper based alloys.
Carbon steels.
Carbon Molybdenum steels.
123. When manufacturing lubricating oils and aromatics the following chemical is used;
1.
2.
3.
4.
phenol
ammonia
hydrogen cyanide
glycol
124. Aluminum chloride can affect stainless steel in which of the following ways?
1.
2.
3.
4.
Severe pitting corrosion only
Intergranular cracking only
Stress corrosion cracking only
Stress corrosion cracking and/or intergranular cracking can occur
125. The low temperature corrosion of gray cast irons is called;
1.
2.
3.
4.
graphitic corrosion
temper embrittlement
brittle fracture
incipient melting
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Closed Book API 510 Practice Exam A
126. A bulged metal rupture disk with the pressure on the concave side has life expectancy of;
1.
2.
3.
4.
5 years.
2 years.
1 year.
Indefinite length.
127. Most active of sulfur compounds found in refinery service is;
1.
2.
3.
4.
Mercaptans.
Organic sulfur compounds.
Hydrogen sulfide.
Polymorphic sulfides when combined with polymer products.
128. Which of the following are the materials could be expected to produce reliable magnetic particle
examination results?
1.
2.
3.
4.
Monels.
Cupro-Nickels.
Austenitic Stainless Steels.
Common Carbon Steels.
129. Which of the following is an example of a microstructure change in metal?
1.
2.
3.
4.
Graphitization.
Interstitial corrosion.
Dembrittlement.
Embossing.
130. A common corrosive compound found in crude oil is;
1.
2.
3.
4.
Nitrogen compounds.
Phenolic acid.
Napthinic acid.
Carbonic acid.
131. Dezincification occurs by attacking metals which contain;
1.
2.
3.
4.
Copper - zinc alloys containing less than 95% of copper used in water service
Copper - zinc alloys containing less than 85% of copper used in water service
Copper - zinc alloys containing less than 85% of copper used in caustic service
Copper - zinc alloys containing less than 95% of copper used in acidic service
132. Which of the following describes a physical change in metal?
1.
2.
3.
4.
Intergranular corrosion.
Sensitization.
Banite solution.
Amphoric layering.
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Closed Book API 510 Practice Exam A
133. When looking for surface cracks in a vessel made of ferrous material which of the following is the
most capable of detection?
1.
2.
3.
4.
Fluorescent Penetrant Method.
Radiography.
Fluorescent Magnetic Particle Method.
Close visual Inspection with good lighting.
134. The majority of vessel foundations are constructed using;
1.
2.
3.
4.
High grade (load bearing) concrete compounds.
Structural steel fireproofed with concrete.
Concrete reinforced with polymers.
Structural steel overlaid with refractory.
135. Which of the following is considered a construction code?
1.
2.
3.
4.
ASME B 31.23
ASME B 33.2
ASME Section V
ASME Section VIII Div. 1
136. Vanadium Oxide corrosion is not known to occur below;
1.
2.
3.
4.
1,050 oF
1,100 oF
950 oF
800 oF
137. Under which of the following condition(s) should you require to the removal of safety relief
device(s)?
1.
2.
3.
4.
If a pressure test is being conducted in which the test pressure will exceed the set pressure of the
safety relief valve with the lowest setting.
The safety relief device was opening on a regular, unexplainable basis.
Seepage had been discovered and operators have been consulted.
Surface corrosion on the body of the device.
138. The rerating of vessel involves the;
1.
2.
3.
4.
Calculations from only a manufacturer experienced in pressure vessels.
Use of Non-Code requirements as established in accordance with the alternative rules of B31.3.
Review Inspection records verify the pressure vessel has been in the proposed service previously.
Calculations from either the manufacturer or an owner-user engineer experienced in pressure
vessels.
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Closed Book API 510 Practice Exam A
139. Which of the following is a major concern when operating vessels that utilize the fluidized bed
principle?
1.
2.
3.
4.
Overheating
Erosion
Corrosion
Cracks
140. The inspection of a vessel to determine if a hydrogen blister is present is often best performed by;
1.
2.
3.
4.
Researching the inspection records.
Determine the vessels material to see if hydrogen attack is likely.
Shining a flash light parallel to the vessel’s surface.
Recommending metallurgical tests for blisters in a laboratory.
141. When a crack is discovered in a vessel that is in a highly stressed area. What action should you
recommend be considered as a first step in any effort to correct the flaw?
1.
2.
3.
4.
Using an insert patch.
Removing the crack using by grinding and inspect using an NDE procedure before repair by
welding.
Call in a pressure vessel engineer.
Design an overlay patch that has rounded corners.
142. Which of the following should be considered in determining the material to be used for pressure
relieving devices?
1.
2.
3.
4.
Temperature and pressure.
Pressure and corrosion resistance requirements.
Temperature, pressure, corrosion resistance requirements and atmospheric conditions.
Atmospheric conditions and temperature.
143. When preparing to inspect a vessel which has had previous inspections what is the initial step in
preparation for the inspection?
1.
2.
3.
4.
Assemble all the required tools to perform the inspection.
Review previous inspection records.
Advice maintenance of any anticipated repairs.
Insure that all non-destructive examinations required have been scheduled.
144. When rerating a pressure vessel, one of the steps of the rerating is the documentation of the;
1.
2.
3.
4.
Calculations from the manufacturer or the owner-user’s engineer.
Approval of the operation’s engineering department.
Report from a professional engineer.
Approval of the ASME.
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Closed Book API 510 Practice Exam A
145. Which of the following best describes a “Corrosion Button” as might be found in a pressure vessel?
1.
2.
3.
4.
Buttons made of highly corrosion resistant material from which corrosion loss can be measured.
Buttons which corrode at about the same rate as the vessel’s material and are used to estimate the
vessel’s corrosion losses.
No such thing exists; there is however a corrosion tab used in vessels.
A form of corrosive product produced by certain chemicals in a vessel when is constructed of high
chrome alloy material.
146. Why should weld probe or trepan inspection methods be avoided if at all possible?
1.
2.
3.
4.
The repair concern will normally charge more to repair these destructive tests sites in the vessel.
These types of destructive test site (holes) are difficult to repair and the weld quality of such
repairs is likely to be poor.
Most jurisdictions prohibit such destructive tests.
NDE personnel are ill equipped to test such sites prior to repairs.
147. Pitting corrosion is usually found in a vessel by what means?
1.
2.
3.
4.
Thickness measurements at all the compass points at one foot intervals.
Scratching with a pointed scraper.
Each shell course and head shall be subjected to abrasive blasting.
Each shell course and head shall be wire brushed thoroughly.
148. The thinned areas of a vessel are to be evaluated for continued service using the design by analysis
methods of Section VIII Division 2. When using this technique it is always true that:
1.
2.
3.
4.
The insurer of the vessel must be consulted with first.
Corporate engineering must approve this method of evaluation.
Consultation with a pressure vessel engineer is required.
You must determine the materials used in the fabrication of the vessel.
149. Heavy wall process hydro-carbon reactors operate at high pressures and have special inspection
requirements, chief among these requirements are inspections for what type of problem?
1.
2.
3.
4.
Laminations of the heavy wall plates used in construction.
Crack damage.
Upset trays and down comers.
Severe corrosion in the top head due to corrosive vapors generated in the process.
150. The number of Charpy impact specimens required for a 1-1/2" thick weld procedure test plate is;
1.
2.
3.
4.
2 sets of 3.
3 sets of 2.
4 sets of 3.
Dependent on the type of material to be used in the construction of the vessel.
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Closed Book API 510 Practice Exam A
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Closed Book API 510 Practice Exam A
36. 3
37. 1
38. 2
39. 1
40. 3
41. 3
42. 4
43. 2
44. 4
45. 2
46. 4
47. 3
48. 3
49. 4
50. 4
51. 1
52. 4
53. 3
54. 2
55. 3
56. 3
57. 4
58 2
59. 4
60. 2
61. 4
62. 1
63. 3
64. 4
65. 2
66. 4
67. 2
68. 1
69. 3
70. 3
71. 4
72. 1
73. 4
74. 4
75. 3
76. 2
77. 2
78. 1
79. 4
80. 4
81. 4
82. 3
83. 4
84. 1
85. 4
04/04 Rev. 4
API 510 6.6
API 510 7.3
API 510 7.2.7
API 510 7.2.8
API 510 6.5
API 576 6.2.2
API 510 5.3
UG-102
API 510 6.7
API 510 6.3
API 572 10.4.5
API 510 7.2.10
API 510 6.4
API 510 5.2
API 510 3.12
UG-27&API 510
Due to Geometry the flatter the thicker required
API 510 6.3
API 510 6.4
API 510 1.1
API 510 1.1
API 510 5.1
API 510 5.5
API 510 5.5
IX QW-300.2
API 510 3.5
API 572 10.2.2
IX QW-100.1
API 572 8.4
SEE ASME/NBIC Q&A
API 576 4.8.1
SEE ASME/NBIC Q&A
VIII UG- 27
IX QW-300.3
ALL OTHERS USE O SCOPES
IX QW-200.1
API 572 8.2
CHAPTER II 206.021 - .023
API 572 10.5
VIII UG-84
VIII UW-35
IX QW-302.2
API 510 7.1.1
VIII UG-84
VIII UW-51(a)(3)
VIII UW-52 (c) (3)
VIII UW-52 header note.
VIII UW-11(a)(3) & UCS -57 (table notes)
VIII UG-84 definition of Charpy (notch toughness)!
IX QW-322.1
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Closed Book API 510 Practice Exam A
86. 3
87. 4
88. 4
89. 1
90. 4
91. 3
92. 1
93. 1
94. 4
95. 4
96. 4
97. 1
98. 4
99. 2
100. 1
101. 1
102. 2
103. 4
104. 4
105. 3
106. 4
107. 1
108. 4
109. 4
110. 1
111. 2
112. 3
113. 4
114. 3
115. 2
116. 4
117. 4
118. 2
119. 2
120. 1
121. 3
122. 2
123. 1
124. 4
125. 1
126. 3
127. 3
128. 4
129. 1
130. 1
131. 2
132. 1
133. 3
134. 2
135. 4
136. 2
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04/04 Rev. 4
VIII UG-84 refers SA-370 for details
API 510 6.3
API 572 10.1
API 572 9.2
VIII UG-100 & 102 & UW-50
API 510 5.7(e)
API 510 5.7(g)
API 572 11.0 (see note in text body}
API 572 11.0 (see note in text body)
API 572 10.3.10
API 576 4.9.14.9.5
CHAPTER 2 204.022
API 572 A.9.1
CHAPTER II 202.022
API 572 10.3.11
API 510 7.2.10
API 510 6.1
CHAPTER II 202.022
API 572 10.4.6
API 576 5.8.1
API 572 10.3.8
CHAPTER II 202.042
API 572 8.3.3
API 572 8.3.7
API 576 6.4.1.
API 572 10.4.4
API 572 10.4.4
CHAPTER II 204.035
API 572 A.9.2
API 572 10.3.7
CHAPTER II 205.01
API 576 6.5.1
API 510 5.2
CHAPTER II 202.024
API 572 10.3.12
API 510 7.2.3
CHAPTER II 202.037
CHAPTER II 202.033
CHAPTER II 202.039
CHAPTER II 202.063
API 576 4.9.3
CHAPTER II 202.23
SECTION V T-720
API 572 8.3
CHAPTER II 202.021
CHAPTER II 202.66
API 572 8.3
API 572 10.4.4
API 572 10.3.3
B31.23&B33.2 nonexistent V is a support Code
CHAPTER II 202.054
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Closed Book API 510 Practice Exam A
137. 1
138. 4
139. 2
140. 3
141. 3
142. 3
143. 2
144. 1
145. 1
146. 2
147. 2
148. 3
149. 2
150. 1
API 510 6.5
API 510 7.3
CHAPTER II 202.32
API 572 10.3.13
API 510 7.1.3
API 576 5.6
API 572 10.4.3
API 510 7.3
API 572 10.5
API 572 11.0
API 572 10.4.4
API 510 5.7(f)
API 572 10.4.4
VIII UG-84 (h)
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Closed Book API 510 Practice Exam A
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