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para examen api 510
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PRE ETLEMAE¡ PRÁtrTI tr E E¡
API 5I tr
PRACTICE QUESTIONS
SELECT THE BEST ANSWER
1. The application of API 510 is restricted to organizations that:APl510, 1.1.2
1. fabricate or build pressure vessels according to ASME B&PV Code.2. employ or have access to an authorized inspection agency.3. manufacture or inspect pressure vessels according to NBIC.4. hire or have access to an unsanctioned inspection agency.
2. API 510 lnspection Code is only applicable to pressure vessels used by the petroleum and chemicalprocess industries that:
APr 510, 1.1.1
1. are being fabricated for the petroleum/chemical industries.2. can be fabricated to ASME B&PV Code and inspected by NBIC inspectors.3. will be place in service after fabrication to the ASME B&PV Code.4. have been placed in service; inspected and/or repaired by an authorized agency.
3. Which of the following is an example of a pressure vessel covered by API 510. (All of the vessels arein-service.)
API 510, 1.2.2 & Appendix A
1. Pressure vessel on an ocean-going ship, operates at 100 psig & 1000 F.
2. Pressure vessel in a ojl refinery, operates at 5 psig and 70' F.
3. Pressure vessel in a oil refinery, operates at 100 psig and 200u F.
4. Pressure vessel in a oil refineÚ, vol. of 4 cu. ft., & operates at 70 psig and 700 F.
4. lf there is a conflict between the ASME Code and API 510 for vessels that have been placed in service,the requirements of:
APr 510, 1.1.1
1. API 510 shall take precedence over the ASME Code.2. ASME Code shalltake precedence overAPl 510.3. NBIC shall be used as an arbitration Code.4. the owner/user shall take precedence over both Codes.
5. One type of Authorized lnspection Agency is:
1. An inspection organization that does inspections. API 510' 3'6
2. An insurance/inspection agency which does not write pressure vessel insurance.3. An owner/user of pressure vessels who maintains an inspection organization only for his ownequipment.4. An independent third party consultant.
6. The term "required thickness" is the thickness:APt 510, 3.5.5
1. essential for the shell and heads of a vessel.2. required for each element of a vessel.3. necessary for the shell of a vessel.4. including the corrosion allowance for the shell of a vessel.
7. Lowering of the maximum allowable working pressure or temperature rating of a vessel or both belowthe design conditions is:
APr 510, 3.5.61. a not a permissible way to provide for corrosion.2. the preferred way to provide for corrosion.3. the only way to keep a vessel in service when it is corroded.4. a permissible way to provide for corrosion.
8. An owner-user is responsible for developing, documenting, implementing, executing, and assessingpressure vessel inspection systems and inspection procedures that will meet the requirements of API510. These systems and procedures will be:
APt 510,4.2.11. maintained in a engineering procedure docurnent.2. kept as a standard procedure.3. contained in a quality assurance inspection manual.4. in hand and available at owner-user headquarters.
9. Safety precautions are important in pressure vessel inspection because of the limited access to and theconfined spaces of pressure vessels. Out of the organizations listed, which is the primary one thatshould be reviewed and followed?
APt510,5.31. ASME2. OSHA3. NFPA4. NBIC
10.-mayoCcUrifequipmentissubjectedtotemperaturdsabovethosefor which it is designed.
APt 572,8.2.61. Creep2. Brittle fracture3. Stress Corrosion4. Erosion
I 1.lf a probable corrosion rate cannot be determined from reviewing data from the same or similar servicevessels or estimated form published data, on-stream determinations shall be made after approximately
hours of service by using NDE methods and a corrosion rate is established.
APt 510, 7.1.21. 5002.10003. 50004. ',I0000
12. The maximum allowable working pressure for the continued use of a pressure vessel shall be basedon computations determined by using the:
APt 510, 7.3,1
1. latest edition of the National Boiler lnspection Code or the construction code to which the vessel wasbuilt.
2. latest edition of the ASME Code or the construction code to which the vessel was built.3, latest edition of the API/ASME Code or the construction code to which the vesselwas built.4. latest editlon of the Underwriters Laboratories Code or the construction code to which the vessel was
built.
13. Out of the many methods of inspection is considered the most important and the mostuniversally accepted method of inspection.
1. radiographic examination2. careful visual inspection3. ultrasonic thickness measurement4. hammer testing
APt 572, 10.1
14. lf external or internal coverings, such as insulation, refractory protective linings, and corrosion resistantlinings are in good condition añd there is no reason to suspecl that an unsafe tondition is behind them,: ,_
APl510, 5.5.2.2f . it is not necessary to remove them for inspection.2. it is necessary to remove them completely for inspection.3. it is necessary to partially remove them for inspection.4. it is required to remove them completely for inspection on some set interval.
15. What API standard provides more information on the inspection of piping, valves and fittingsassociated with pressure vessels?
APl572 Sect. 21. API Recommended Practice 576.2. API Recommended Practice 575.3. API Recommended Practice 574.
. 4. API Recommended Practice 573.
16. For a corroded area of considerable size in which the circumferential stresses govern, the leastthickness along the most critical element of the area may be averaged over a length not exceeding thefollowing:
16a. For vessels with inside diameters less than or equal to 60 inches- Pl 510' 7 4.2'1
1 . 114 lhe vessel diameter or 5 inches, whichever is less.2.112the vesseldiameter or 10 inches, whichever is less.3. 1/4 the vessel diameter or 15 inches, whichever is less.4. 112lhe vessel diameter or 20 inches, whichever is less.
16b. For vessels with inside diameters greater than 60 inches-
1. 1/3 the vessel diameter or 40 inches, whichever is less.2. 114 the vessel diameter or 30 inches, whichever is less.3. 1/3 the vessel diameter or 50 inches, whichever is less.4. 114 lhe vessel diameter or 25 inches, whichever is less.
17. For corrosion calculations the surface of the weld is considered to be:APt 510, 7.4.5
1. 1 inch on either side of the weld or twice the minimum thickness on either side of the weld, whicheveris greater.
2. 2 inches on either side of the weld or 2 times the minimum thickness on either side of the weld,whichever is greater.
3. 4 inches on either side of the weld or 4 times the minimum thickness on either side of the weld,whichever is greater.
4. 6 inches on either side of the weld or 6 times the minimum thickness on either side of the weld,whichever is greater.
18. Under what conditions is an internal field inspection of a newly installed pressure vessel waived?
APt 510,6.2.1.2
1. The contractor installing the vessel assures the owner-user that the vessel is satisfactory for itsintended service.
2. A manufacturers data report assuring the vessel is satisfactory for its intended service is available.3. The owner-user assures the inspector that the vessel is satisfactory for its intended service.4. The manufacturer orally assures the owner-user that the vessel is satisfactory for its intended service.
lg.Anabovegroundpressurevessel shall begivena visual external tnspection,preferablywhileinoperation, at least every _ years or at the same interval as the internal, whichever is less.
API 510, 6.4
1.2
410
20.The period between internal or on-stream inspections for a remaining life of four years or greater shall
not exceed one-half the estimated remaining life of the vessel based on corrosion rate oryears whichever is less.
API 510,6.5.11.102.153.54.12
21. ln cases where the remaining safe operating life is estimated to be less than 4 years, the inspectioninterval may be the full remaining safe operating life up to a maximum of
-
years.
AP|510,6.5.1.11.12.23.3. 4.4
22. lf both the ownership and the location of a vessel are changed, what must happen before it is reused?
APl510, 6.2.2.21. lt must be internally and externally inspected2. All the records must be reviewed.3. lt must be thoroughly ultrasonically checked.4. lt must have all thl Éaper work tránsferred to the new owner.
23. A pressure vessel has been in service for 12 years and has shown a history of corrosion over its
service life. The original thickness was 1.9375" thick and the present thickness is 1.405". What is the
corrosion rate for this vessel?API 510, 7 .1 .1 .1
1. 0.266250 inches/year2. 0.532500 inches/year3. 0.088750 inches/year4. 0.04437 5 inches/year
24. When must a pressure test be performed on a pressure vessel?API 510, 5.8.',l.1
1. When the contractor working on the vessel deems it is necessary.2. When the API authorized pressure vessel inspector believes that it is necessary.3. When the safety group of the owner-user requests it.
4. When the NFPA requests it.
25. Who is authorized to test and repair a pressure relief valve?APr510,6.6
1. An organization experienced in PRV malntenance.2. A valve repair shop.3. A certified pressure vessel inspector.4. A contractor with valve mechanics.
26. What is the maximum inspection or testing interval of a pressure-relieving device?
APl510. 6.6.2.2 v'1 . 15 years.2.12years,3. 10 years.4.20 years.
27 . Whal determines the inspection interval of a pressure-relieving devices?
1. The interval is determined by the authorized pressure vessel inspector. API 510' 6'6'2'1
2. The interval is determined by the owner-user.3. The interval is determined by the performance of the device.4. The interval is determined by the size of the device.
28. The following is not normally found in pressure vessel records.
APl510,7.2.21. Manufacturers data reports.2. Vessel identification numbers3. Piping past the first vessel flange.4. Relief valve information.
29. When repairs or alterations are to be performed on a pressure vessel, all materials, and allweldingprocedures that are to be used must be approved by:
API 510, 8.1.2.1
1. the insurance carrier for the company that the pressure vessel belongs to and the owner-user of thepressure vessel.2. the owner-user and the contractor performing the repairs or alterations to the pressure vessel.3. the API authorized pressure vessel inspector and, if necessary, by an engineer experienced in
pressure vessel design, fabrication, or inspection,4. the original vessel fabricator and the insurance carrier for the company that owns the pressurevessel.
30. What type of repairs can an authorized inspector give prior general authorization for?
API 510, 8.1.11. major repairs that require pressure tests.2. alterations that require pressure tests.3. major alterations that require pressure tests.4. limited or routine repairs that will not require pressure tests.
31. When does an inspector normally approve all specified repair and alteration work.
API 510,8.1.2.2
1. Work is approved after the work contractor certifies the work to be satisfactory and the contractor haspressure tested the vessel.
2. Work is approved by a process/chemical engineer for the owner-user and the contractor has pressuretested the vessel.
3. Work is approved after an inspection by the authorized inspector has proven the work to besatisfactory and any required pressure test has been witnessed by the him.
4. Work is approved after an inspection and test by the contractor and the unit operators accept thevessel.
32. Who should be consulted before repairing a crack at a discontinuity, where stress concentrations maybe serious? :
APr 510, 8.1.5.2.11. The operators of the vessel.2. The owner-user.3. An engineer experienced in the operation of the vessel.4. An engineer experienced in pressure vessel design.
33. All repair and alteration welding shall be in accordance with the applicable requirements of the:API 510, 8.1.1
1. NBIC Code2. AWS D1.1 Welding Code3. ASME Code Section VIll.4. NFPA Welding Code.
34. The repair organization shall use qualified welders and welding procedures qualified in accordancewith the applicable requirements of:
APt 510, 8.1.6.2.11. Section V of the ASME Code.2. Section lX of the ASME Code.3. AWS D1.1 Welding Code.4. API Standard 1104, Welding.
35. The repair organization shall maintain records of its qualified welding procedures and its weldingperformance qualifications. These records shall be available to thewelding.
prior to the start of
APt 510, 8.1.6.2.2'1. operator2. owner-user3. welder4. inspector
36. For alterations or repairs of vessels initially postweld heat treated as a code requirement andconstructed of P-1 and P-3 steels listed in the ASME Code, preheating to not less than _degrees F may be considered as an alternative to PWHT when impact testing is not required.
API 510, 8.1.6.4.2.2.21.2002. 3003.4004. 500
37. A carbon steel (A-285 GR C) vessel must be repaired by welding in a flush patch (replacing acorroded area). lmpact testing is not required The vessel is in caustic service and was originally postweld heat treated. Which of the following is correct.
API 510, 8.1.6.4.11. The repairshould be postweld heattreated. 8.1.6.4.2.2.12. The repair may be pre-heated to 300 degrees F. while welding and PWHT waived.3. The repair may be preheated to 200 degrees F. while welding and PWHT waived.4.No's1&2above.
38. lf local post weld heat treatment is approved for a vessel repair (a complete 360 degree band aroundthe vessel is not used--only a localized spot), what are the minirnum number of thermocouples requiredaround the localized area to monitor the temperature?
APt 510, 8.1.6.4.11.12.23.44.6
\--l
39. When repairing vessels with stainless steel weld overlay and cladding (vessels constructed of P-3, P-4, or P-5 base materials) the base metal in the area of repair should be examined for cracking by UTperASMESectionV.ThisUTinspectionshouldbemadehoursafterrepairshavebeencompleted for equipment in hydrogen service, especially for chromium-molybdenum alloys that could beaffected by delayed cracking.
APt 510, 8.1.5.4.41. 122.243. 364.42
40. When are fillet welded patches (lap patches) allowed.API 510, 8.1.s.1.2.1
1 They may be only used in vessels with shells 318" thick or less.2 They may be used only if approved by the operators.3 They may be used only on low pressure vessels.4 They are used for only temporary repairs.
41. Carbon or alloy steel with a carbon content over _ percent shall not be welded.API 510,8.1.4
I 0.302. 0.353. 0.404.0.45
42.'Acceptance criteria for a welded repair or alteration should include NDE techniques that are in
accordance with the:APt 510,8.1.7.2
1. applicable section of the NBIC.2. applicable section of the ASME Code.3, jurisdiction4. owner-user.
43. A pressure test is required after:APr 5'10, 5.8.1.1
1. an alteration.2. a repair.3. a lightning strike.4. a unit upset.
44. When is a rerating of a pressure vessel considered complete?APr 510, 8.2.2
1. When the pressure vessel engineer approves the rerating.2. When the authorized construction organization attaches the nameplate to the rerated vessel.3. When the API authorized PV inspector oversees the attachment of an API 510 nameplate orstamping.4. When the owner-user accepts the rerating from the rerating organization.
45. An API certified inspector who has not been actively engaged, as such, within the previous three yearscan be recertified by:
APr 510, 8.3.'1
1. being employed by a refinery.2. being licensed by the jurisdiction.3. an oral examination.4. a written examination.
,--- \.-,
46. Several different methods are used to construct pressure vessels. Most pressure vessels are
constructed today using construction.APt 572,4.2
1. welded2. hot forged3. riveted4. multilayer
47 . Íhe most common material used to construct pressure vessels is:
'l titanium2. austenitic stainless steel
APl572,4.3
3. Monel4. carbon steel.
48. Construction codes are periodically revised as the designs of pressure vessels improve and as new
construction materials become available. A pressure vessel should be maintained according to the:
API 572, Sec.61. requirements under which it was designed and constructed.2. standards and specifications of the owner/user.3. principles and specifications of the jurisdiction.4. guidelines of the NBIC.
49. The basic reasons for inspection are:APt 572,7 .1
1. to meet the prerequisites of the ASME Code.2. to fulfill the provisions of the API 510.3. to satisfy the requirements of OSHA.4. to determine the physical condition of the vessel and to determine the type, rate, and causes of
deterioration.
50. Metal losses are not always constant but are a function of such variables as:APt 572,8.2
't . chemicals, caustics, inorganic and organic acids.2. excessive pressure.3. low temperature.4. none of the above
51. Erosion is the attrition of a surface caused by:APt 572,8.2.2
'1. loss of material caused by sulfur and chloride compounds.2. attrition of material cased by acid or caustic attack.3. the impingement of solid particles or liquid drops.4. wearing down of a material caused by oxidation.
52. Many problems with pressure vessels are caused by faulty fabrication. Which item on the following list
is not related to faul§ fabrication.
1. poor welding.2. chloride stress corrosion cracking.3. improper heat treatment.4. dimensional intolerance.
APt 572 8.5
53. The external inspection of a pressure vessel should start with:APl572,10.3.2
1. vessel foundation and anchor bolts. \--'l2. ladders, stairways, platforms, or walkways connected or bearing on the vessel.3. nozzles and connecting piping.4. protective coatings and insulation.
54. lf an internal inspection of a vessel is not the initial one, the first step is to:API 572, 10.4.3
1. make a walk around visual check of the vessel.2. review the previous records of the vessel to be inspected.3. check with the vessel operators for unusual operating conditions.4. make a preliminary manway inspection.
55. Which of the following ¡s not a tool for measuring thickness of vessel shells?API 572, 10.5
1. acoustic emiss¡on transducers.2. ultrasonic instruments.3. radiography with step gages.4. corrosion buttons and depth drilling.
56. Using the following description, pick the type pressure-relieving device from the list. The spring is fully
exposed; it is used on steam boiler drums; it is also used for general air and steam service in a refinery.
'1. Rupture Disk. Pl 576' 4'2
2. Safety Relief Valve.3. Relief Valve.4. Safety Valve.
57. Using the following description, pick the §pe pressure-relieving device from the list. They are used in
liquid service. They have closed bonnets. They should not be uied in steam, air, gas, or vapor service. v/
API 576,4.31. Rupture Disk.2. Safety Relief Valve.3. Relief Valve.4. Safety Valve.
58. Using the following description, pick the type pressure-relieving device from the list. They are used ingas or vapor service and liquid service. They have closed bonnets. They should not be used on steamboilers. They are used in corrosive refinery service.
API 576,4.51. Rupture Disk.2. Relief Valve3. Safety Relief Valve.4. Safety Valve.
59. Using the following description, pick the type pressure-relieving device from the list. They used in
refinery process industries for gas, vapor, air or liquids. They can be used in corrosive refinery service.They minimize the effects of back pressure on its operation characteristics. They should not be used aspressure control or bypass valves.
. API 576,4.61. Safety Valve.2. Balanced Safety Relief Valve.3. Relief Valve.4. Rupture Disk.
60. What is the common limitation for use on the following pressure relief devices: Safety Valve, ReliefValve, Safety Relief Valve, Balanced Safety Relief Valves.
APt 576, 4.2, 4.3, 4.4,4.6'l . use in corrosive refinery service.2. use as a pressure control or bypass valve.3. use as on steam boiler drums or superheaters.4. use in liquid service.
61. Which of the following in NOT a cause of a pressure-relieving devices improper performance?
1. corrosion. API 576' section 5
2. proper maintenance.3. damaged seating surfaces4. failed spring.
. 62. Why is a definite time interval between inspections of pressure-relieving devices necessary?
API 576,6.41. To insure proper performance.2. To satisfy OSHA requirements.3. To fulfill owner-user limitations.4. To meet manufacturers conditions.
63. Which of the following is done prior to the relief device being dismantled?APt 576,6.2.9
'1. Mea§ure the diameter of the disk2. Body wall thickness measured3. Wire brush and paint the body4. Weigh the valve
64. Which one of the following list is not an item to be checked when a visual on-stream inspection of apressure-relievin g device.
API 576,6.3
'1. Check to make sure the inlet nozzle of the valve and/or the piping to the valve inlet is not plugged.2. Check to make sure the correct relief device was installed.3. Check to make sure no gags, blinds, closed valves or piping obstruction prevent the relief device from
working.4. Check to make sure the seals installed to protect the spring setting have not been broken.
65. When a pressure-relief valve is first received in the shop, what should be done?API 576, 6.2.8
1. dismantle and clean the valve.2. check the valve spring for corrosion.3. dip the valve in a cleaning solution.4. test pop the valve to determine the "as received" relieving pressure.
66. What is the definition of temper embrittlement?APt 571 ,4.2.3.1
1. Reduction in toughness due to a chemical change.' 2. lncrease in toughness due to a metallurgical change.3. Heating below 650'F.4. Reduction in toughness due to a metallurgical change.
67. How is temper embrittlement confirmed?API 571, 4.2.3.5(a)
1 Through impact testing2. Through tension testing.3. Through bend tests.4. None of the above
68. ln which equipment is temper embrittlement found?
APt 571,4.2.3.4(b)1. Cooling towers.2 Hydroprocessing units.3. Welds.4. Cokers
69. What is the best way to mrnimize the likelihood and extent of temper embrittlement?
API 571, 4.2 3.6(b)1 Limit acceptance levels of sulfur in weiding consumables.2. Limit the level of iron in the base metals.3. Limit acceptance levels of manganese, silicon, phosphorus, tin and antimony in base metals4. None of the above.
70. Brittle fracture occurs in which of the following materials?API 571 .4.2.7.2
I The 300 series stainless steels.2. Carbon and low alloy steels3. Aluminum.4. Copper.
7'1 . Brittle fracture occurs only at temperatures.API 571, 4.2.7 3(e)
1. Above 70oF2 Below the Charpy lmpact transformation temperature3. Above the Charpy lmpact transition temperature4. Below the Charpy lmpact transition temperature
72. What is the appearance of a brittle fracture?
API 571 ,4.2.7.5(a)'1 . Herringbone.2. Straight and non-branching.3. Branching.4. None of the above.
73. Equipment manufactured before what date was made with limited restrictions on notch toughness?
API 571 ,4.2.7 4(a)1, December 1988 Addenda.2 Ociober 1957 Addenda.3 January 1964 Addenda.4 December'1987 Addenda.
74. For new equipment, brittle fracture is best prevented by:
APl 571, 4.2.7.6(a)1. Using materials specifically designed for low temperature operation.2. Using materials specifically designed fo¡ medium temperature operation.3, Using a startup temperature above 100uF.4. Operating at temperatures below the lower transformation level.
75. Thermal fatigue is defined as:APl571, 4.2.9.1
1. Cyclic stresses below transition temperature.2. Fatigue due to low temperature operation.3. The result of cyclic stresses caused by variations in temperature.4. land2above.
76. The Pressure Vessel engineer must additionally consider which of the following when welding a P-No. 5 base material to stainless cladding which is in hydrogen service at elevated temperatures?
4Pr510,8.1.5.4.31. Weld rod diameter2. Effects of temper embrittlement3. Outgassing base metal4. Weld bead size
77. Al2in.nozzleisbeinginstalledinavesselwherethelargest existingopeningisl0in.Thisisconsidered:
APt 510, 3.21. A repair 8.1.32. An alteration3. A rerating4. A maintenance activity
78. How many years of experience is required when the candidate does not have an education levelequivalent to a high school education?
APr510, 8.2.11. 52.3,5. ¿
4. 10
79. May the API 510 lnspector be assisted by non-certified individuals when visual inspections areperformed?
fuPt 514,4.2.41. Yes, when authorized by API2. Yes3. No4. Yes, when properly trained and qualified
80. When can preheat at 3000 F in lieu of PWHTnot be applied in the repairs of a pressure vessel?
APl510, 8.1.6.4.2.2.1 \---1. ForP-No. I materials2. For P-No. 3 materials3. For P-No. 4 materials4. None ofthe above
81. Which of the following conditions must be met to qualify vessels for on-stream inspections whenthe general corrosion rate is less than 0.005 in. per year and has a remaining life greater than 10years?
API 5'10, 6.5.2.11. The vessel is strip lined2. The corrosive character of the contents has been established for at least 5 years3. Not more than two questionable conditions were disclosed at the previous external inspection' 4. The operating temperature exceeds the lower temperature limits for the materials creep-
rupture range
82. The definition of t,"0,¡"6 is:
APl510,7 .2.1
1. Minimum nominal thickness in inches for a given location or component 3.5.52. Minimum actual thickness in inches for a given location or component3. Minimum thickness in inches for a given location or component4. Minimt¡m allowable thickness in inches for a given location or component
83. Which of the following widely scattered pitting cannot be ignored :
API 510,7.4.3
1. The total area of the pits does not exceed 7 square inches within an 9 inch diameter circle \-2. No pit depth is greater than 1/3 the vessel thickness3. The sum of the pit dimensions along any straight line within the circle does not exceed 2.5
inches4. The total area of the pits does not exceed 7 square inches within an I inch diameter circle
84. Which of the following is not an alteration?
APt510, 3.2L lncreasing the diameter of a shell section2. Decreasing the temperature with impact testing of materials required3. Adding a NPS 12 nozzle in a vessel that has two NPS 10 nozzles4. Adding a NPS 1A nozzle in a vessel that has two NPS 12 nozzles
85. A pressure vessel whose thickness does not exceed 2 inches has a MDMT of - 200 F. Per API510 what is the minimum test temperature permitted?
APtS'10, 5.8.6.21. 3o0F2"-100F3. -300F4. 100F
86. lf a filler metal is used that has a minimum specified tensile strength that is lower that that of thebase metal, which of the following conditions must be met?
APt 510, 8.1.5.3.2
L The increased thickness may have rounded corners2. The repair thickness shall not be more the 600/o of the required base metal thickness,
excluding corrosion allowance. 3. The repair shall be made with a minimum of two passes4. The chemistry of the filler metal shall be taken at the completion of welding
87. How are safety relief devices isolated from the vessel during hydrostatic testing?
1. Test levers are wired down API 510' 5'8'3'2
2. Removed or gagged3. Springs are tightened4. None ofthe above
88. What API standard is used for air cooled heat exchangers?
APl572, Section 21. 9452. 5103. 5744. 661
89. What one key factor affects thermal fatigue?
API 571,4.2.9.3(a)1. Magnitude of temperature swing.2. Startup.3. Shutdown. '--'4.2and 3above.
90. What happens when a pressure relief device spring breaks?
APr 576, 5.31. Uncontrolled valve opening occurs2. There is a sllght reduction in set pressure3. The valve cannot open4. Nothing
91. Thermalfatiguecrackspropagate:
APt 571, 4.2.9.5(b)1. Parallel to the stress.2. ln a herringbone pattern.3. Transverse to the stress.4. Any of the above.
92. Which of the following are causes of faulty fabrication?
APr 572, 8.51. lmproper fit2. Poorwelding3. lmproper heat treatrnent4. Allthe above
93. External inspections of pressure vessels should start with which of the following:
APt 572, 10.3 21 Ladders, stainvays2 Ladders , foundations3 Guy wires, supports4. Nozzles, anchor bolts
94. The most important conditions to check when examining metallic linings are:
APt 572, 10.4.51 That there is no corrosion2. That no holes or cracks exist3 That linings are properly installed4. All the above
95. The condition of concrete supports is determined by?
APr 572, 10.3.51. RT2 Hydrostatic testing3. Hammering4. Visual inspection with some picking and scraping
96 What are effective methods of inspecting for fatigue cracking?
APr 571 .4.2.9.71 UT.2VT3 MT&PT4. Both2&3.
97 "U" bolts on guy wires should be installed so that the 'U' bolt is against the:
APt 572,1A 3.71. Either live or dead end of wire2 Live or long end of wire3. Dead or short end of wire4. None of the above
98. Temporary repairs to scattered pitting may be made by using which of the followrng?
API 572, Section 11'1 . Epoxy based materials2 Metallic linings3. Concrete4. Rubber
99 Creep is depencient upon three factors. Two of these factors are:
AP' 572, 8.2 61. Stress, pH2. Pressure, time3. Stress, time4. Temperature, pressure
iOO. For bulged metal rupture disks installed with pressure on the concave side, the operatingpressuie of the vessel is usually limited to what percentage of the set bursting pressure?
API 576,4.9.31. 50-752. 953. 65-854. 60
101. Which of the following is the principal method of inspecting nonmetallic linings?
1. UT2. Spark testing3. Visual4. Profile radiograPhY
fiz. Where is the set pressure for a pressure relief device indicated?
APl572,1A 4.69-tb
API 576, 6.2.2,7.21. On the identification tag and in the historical record2. ln the specification record and historical record3. On the identification tag4. None ofthe above
103. Excess thickness in a vessel can result from which of the following?
APl572, 10.9'l . Temperature increase2. Corrosion allowance3. Using nominal plate thickness in lieu of exact value calculated4. Numbers2&3above
104. The selection of tools for the measurement of thickness depends on several factors. One of
these is:
APr572, 10.5
1. Accuracy desired2. Temperature of surface3. Type of product contained in vessel4. Cleanliness of surfaces to be examined
105. Which of the following is the most important factor in determining the frequency of inspection for
a vessel?
API 572, 9.1
1. The erosion rate at critical sections2. The rate of deterioration and the remaining corrosion allowance3. The rate of deterioration and the remaining thickness4. The operating temperature and pressure
106. Which of the following is not a likely location of corrosion for a heat exchanger?
APt 572,4.9.2L Where dissimilar metals are in close contact2. On the external surface of the shell3. On the outside surface of tubes midway between baffles4. On the bottoms of shells in contact with noncorrosive deposits
107. Which of the following is a requirement when installing a patch?
API 510 I 1.5.1.2.31. Always perform pressure test after repair2. Having rounded corners3 Ultrasonically examine adjacent base material before welding4. Having rounded corners with a minimum 1 in radius
108. Who decides how long a temporary patch may remain in place?
API 510,8.'1.5.1.11. Owner-user2 Pressure vessel engineer & API lnspector3 Pressure vessel engrneer4. API lnspector
I 09. You have a corroded area which is 0.900 in. thick Thé minimum thickness is calculated to be1.000in.thecorrosionrateis0.0'1 in.peryear.Assumingaconstantcorrosionratehowmuchweld overlay must be applied to have a 10 year life?
APr 510,7.1.1 1
1. 0 10 in. 7 .2.1
2. 0.20 in3. 1.300 in4. repair not permitted by API 510
110. Who is notified when a repairto an ASME Section Vlll, Division 2 vessel is required?
APt 510,8.1.11. Pressure vessel engineer2. API lnspector3. Pressure vessel engineer & API lnspector4 Manufacturer of vessel
111 Who is responsible to keep records of pressure vessel inspections & repairs?
APt 510 4.'1
1. Owner -user2. API lnspector3. Pressure vessel engineer4. Engrneering manager
112. Which NDE method is used to examine P-3, P-4 or P-5 base metal when repairs to stainlesssteel weld overlay is maoe?
APt 510, 81.5.4.41. MT2, UT3. RT4. VT
1 13. Quality assurance can be simply defined as:
API 510, 3.5.2
1. The work necessary to restore a vessel to a condition suitable for safe operation2. All planned, systematic, and preventative actions required to determine if materials,
equipment or services will meet specified requirements3. Work done by the QA Manager -
4. Planned actions which determine that all NDE is performed correct
114. Which of the following is defined as a repair organization?
APr 510, 3.5.41. An owner-user who repairs his or her own equiprnent2. The holder of an ASME "S" stamp3. A contractor whose qualifications are acceptable to the pressure vessel engineer4. An individual or organization that is authorized by API
115. How long must the temper bead repair be held at temperature after completion of the weld repairfor an API 510 application?
APr 510, 8.1.6.4.2.3(fX8)1. 5 hours2. t hour3. 4 hours4. 2 hours
116. Which of the following must be considered by the pressure vessel engineer when repairs are
made to stainless sieel weld overlay for equipment in hydrogen service?
APt 510, 8.1.5.4.3
1. Hardening of the weld metal due to grinding or arc gouging2. Softening of base metal due to welding3. PWHT to reduce impact properties4. Outgassing base metal
117. Pure erosion is sometimes referred to as:
APt 571,4.2.14.3(a)1) Corrosive wear.2) Abrasive wear.3) Deburring.4) Cohesive wear.
118. Erosion and erosion-corrosion are characterized by a local loss in thickness in the form of:
APl571, 4.2.14.5(a)I ) Pits.2) Grooves.3) Valleys.4) Allthe above.
119. Which of the following islare methods of preventing erosion?
APl571, 4.2.14.6(a)
1) lncreasing pipe diameter.2) Decreasingwallthickness.3) Using replaceable impingement baffles.4) land3above.
120. Which of the following is a critical factor for mechanical fatigue?
APt571, 4.2.16.3
1) Geometry.2) Stress level.3) Number of cycles.4) Allthe above.
121. During an internal inspection of a pressure vessel a blister is found in one of the heads betweenknuckle and circumferential head to shellweld. What would be the most appropriate action?
APr 510, 8.1.2,1
1) Replace the head2) Consult with a pressure vessel engineer3) Drill the blister to relieve the pressure4) Pressure test the vessel
122. A pressure vesselcontains the following nozzles, (2-NPS 6, 1-NPS 10 and 4-NPS 3). Which ofthe following would be an alteration?
APt 510, 3.2
1) Addition of an NPS 6 nozzle2) Addition of an NPS 12 nozzle3) Addition of an NPS 314 nozzle4) Addition of three NPS 1 nozzles
123. A pressure vessel is in service and has no corrosion data available. Where should thicknessreadings be taken?
RP572, 10.3.12
1) At least one on each shell course, head and nozzle2) One in each quadrant of each shell course and head3) One in each quadrant on each shell course at one-foot intervals4) At one foot spacing on each shell course
124. What is the signature mark of a mechanical fatigue failure?
APl571, 4.2.16.5(a)1. Clam shell type fingerprint.2. Branching cracks fingerprint.3. Herringbone pattern fingerprint.4. None ofthe above.
125. When an owner/user chooses to conduct a RBI assessment it must include a systematicevaluation of.
API 510, 5.2
1. Fatigue2. Likelihood of failure3. Associated consequence of failure4. Both2&3
126. Examples of degradation mechanisms are,
APr 5'10, 5.4.1
1 Corrosion2 Cracking3. Creep4. Allthe above
127. lt is essential that all RBI assessments be:
APr 510. 5.2 3
1. Reviewed by jurisdictional authorities2. Understood by Engineering3. Thoroughly documented4. Defined in terms of API RP4467
128. An RBI assessment may be used to the '1 0 year inspection limit
API 510, 6.3 1
1 Exceed2 lncrease3. Decrease4. Limtt
129 What cleaning methods would not apply for wet sulfide cracking?
APt 572, 10.4 2 -"ttiJ1. Power wire brushing
2. Power chipping3 Hot water, steaming, and abrasive grit blasting4 High pressure water blasting
130. What rs the maximum interpass temperature for a repair weld using the controlled depositionmethod that was originally PWHT'd ?
API 510, 8.1.6.4.2 3(fX4)1. 4000F2. 6000F3 3000F4. Not greater than that used in procedure qualification test
131 What inspections are done to rotating equipment to detect evidence of mechanical fatigue?
API 571, 4.2.16.7 (a)(c )
,1. PT.2. MT.3 Vibration monitoring.4. All the above
132 Which of the following matenai is affected by atmospheric corrosion?
APr 57'1 ,4.3.2.2
1. The 300 series of stainless steels.2. Monel,3. The 400 series of stainless steels.4 Copper alloyed aiuminum
133. What is one inspection technique that can be used to detect atmospheric corrosion?
API 57'1 ,4.3.2.7
1. UT.2. RT3MT4ET
134. Corrosion under insulation (CUl) affects which of the following materials?
APr 571 ,4.3.3.2
1. Carbon steel2 The 300 series of stainless steels.3. Duplex stainless steels.4. Allthe above.
135 For CUI situations corrosion becomes more severe at metal temperatures between,
APr 571,4.3.3.3(d)
1.212oF and 2500F.2.2120F and 1000C3. lOOoF and 121oF.4. None of the above
136 Which of the following are inspection and monitoring methods for CUI?
API 571, a.3.3.7(g)
1. Real-time profile x-ray.2. IR therrnography.3. Guided wave UT.4. Allthe above.
137. Which of the following is a critical factor for cooling water corrosion?
APt 571 ,4.3.4.3
1. Decreasing cooling water outlet temperature.2. Decreasing oxygen content.3. Decreasing process side inlet temperatures4. None of the above.
138. Which of the following equipment is affected by cooling water corrosion?
API 571. 4.3 4"4
l. Water cooled heat exchangers2 FCC units3 Cooling towers.4 1 &3 above.
139. Which of the following is a preventron/mitrgation method for cooiing water corrosion?
APl571, 4.3.4.6(d)
'1 . Coating all surfaces with grease2. Allow fouling to occur.3. Lower the veiocity of water flow.4 Upgrading of metallurgy.
140. What materiai is primarily affected by boiler water condensate corrosion?
API 571 ,4.3.5.2
1. Aluminum.2. Carbon steel3. The 300 series of stainless steels.4 None of the above.
141 . What type of carbon droxide corrosion is found in condensate return systems?
APr 571, 4.3.5.5(b)
1. Deep valleys.2. Chloride stress corrosion cracking.3 Smooth grooving.4. None ofthe above.
142. Which materials are affected by sulfidation?
1. All iron based materials.2. Aluminum.3. Titanium & zirconium.4.Allthe above.
APl571, 4.4.2.2(a)
-
143. What is the mosi common appearance of damage for sulfidation?
APl 571 ,4 4.2.5(a)
1. Gross pitting.2. Uniform thinning3. Branching cracks.4.None of the above
144. What is one method of prevention/mitigation for sulfidation?
API 57'i ,4.4.2.6(a)
1. Down grading to carbon steel.2. Upgrading to monel alloys3. Upgrading to a higher chrome alloy4 Down grading toa copper alloy.
145. What material is most affected by chloride stress corrosion cracking (CSCC)?
API 571 , 4.5.1.2(a)
1. All 300 series stainless steels.2. Duplex stainiess steels3. Nickel based alloys4. Allthe above.
146. What are the preferred methods to inspect for CSCC?
APr 571 4.5.1 7(b)
1. PT.2. RT.3. Phase analysis EC.4.No's1&3above.
147 Corrosion fatigue is defined as
APt 571 ,4 5.21
1. Cracks developing under the combined affects of cyclic loadtng and corrosion,2. Corrosion from tired materials3. Corrosion caused by copper impregnation.4. None of the above.
148. What is the appearance of damage for corrosion fatigue?
APt 57'1 ,4 5.2.5(a)
1. Transgranular and branching.2 lntergranular,3. Herringbone pattern.4. Transgranular but not branching.
149 What are the critical factors of corrosion fatigue?
API 571 ,4.5.2.3\a)
'1 . Corrosive environment.2. Cyclic stresses.3. Stress raisers.4. All the above.
150.Which of the following is an inspection technique for crack detection for corrosion fatigue onrotating equipment.
API 571 , a.52.7(a)(i)
1UT2. MT3. RT4.No's1&2above
151 . Which of the following material is susceptible to caustic stress corrosion cracking (CSCC)?
API 571 ,4.5.3.2
'1 . Carbon steel.2. Low alloy steels.3. The 300 series of stainless steels4. All the above
152.How can CSCC be prevented in carbon steels?
API 571,4.5.3.6(a)
1. Stress relieving at 1 1500F2 Operating at bélow 7500F3. Stress reiieving at 7000F.4. None of the above.
153 What are some related mechanlsms to CSCC?
APt 571, 4.5 3.8
1 Sulfide cracking.2. Amine cracking.3 Carbonate crackrng4 No's2&3above.
154.Name two of the four types of damage that result from wet H2S?
API 571, 5.1 2.3.1(a)(d)
1 Hyorogen blistering.2 Sulfide stress corrosion cracking3 Carbonate cracking4.No's1&2above.
155.What matenal is affected by wet H2S damage?
APt 571 , 5.1.2.3 2
1 Copper alloys2 Monel.3 The 300 series stainless steels.4. Carbon steel and low alloy steels.
156. Which of the following is an important variable that affects and differentiates the variousforms of wet H2S?
API 571, 5.1 .2.3.3(a)
'1 . Environmental conditions2. Material propertres.3. Tensile stress level.4. All the above
157 What units or equipment are affected by wet H2S?
APr 57'1 , 5.1.2.3.a@)
'1 All units where a wet H2S environment is present.2. Only when the 300 series stainless are present3. Only at temperatures below 2500F.4 None of the above.
158 Where does wet H2S damage generally focus?
APr 571 , 5.1 .2 3 7(b)
1. Most processes.2 Weld seams and nozzles.3 Cooling towers4 Allthe above.
159. Which of the following material is less affected by high temperature hydrogen attack.
API 571 , 5.1.3.1.2
1 2.25Cr - 1Mo2 SCr - 0.SMo3 C - 0.5Mo4. Allthe above.
160 What carbide stabilizing elements are used as a preventive measure for HTHA?
APr 57'1,5.1.3 1.6(a)
'i . Tungsten.2. Vanadium.3. Chromium4 All the above
161. What inspection methods are best to find fissuring and/or serious cracking caused by HTHA?
APr 571, 5.1.3.1.7(b)
1. MT2. Backscatter UT technique.3. Velocity ratio UT technique.4.No's2&3above.
162. What is not a proven method for detecting damage by HTHA?
AP|571,5.1.3.1.7(f)1. RT.2. AEf.3. MT.4. Allthe above.
163. Which are the following are tasks performed prior to welding?
APt 577,4.2
1. Procedures and qualification records2. Quality assurance3. Post-weld heat treatment4. Allthe above
164. What is one limitation of the SMAW process?
APl577,5.2.3
1. Shielding gas consumption high.2. Electrode diameters limited to large sizes only.3. Recrushed slag is difficult to handle.4. Deposition rates lower than other processes.
165. Which of the following is a transfer mode for the GMAW process?
APt 577, 5.4.3
1. Standard2. Spray3. Limited4. None ofthe above
166. Flux core arc welding is normally considered which of the following?
APt 577, 5.5
1. Semiautomatic2. Manual3. Automatic4. Machine
167. What is the initial step in reviewing a WPSr
APl 577,6 4
1. Verify that all nonessential variables are addressed2 Verify that the preparer is a welding engineer3. Verify that all essentral, nonessential and when required supplementary essential
variables are addressed4. Verify that only essenttal variables are addressed
168. A-Numbersminimizethenumberofweldingprocedurequalifications Theyarebasedon:
API 577,7 .5
'1 . Chemical composition of the base metal2. Chemical composition of the deposited weld metal3. Chemical composition of the mixture of base metal and deposited weld metal4. Any of the above
169 How should low-hydrogen electrodes be stored?
APt 577.7.7
1. ln refrigerators2. ln open containers3. Separately from other types of electrodes with higher hydrogen content4, None of the above
'1 70. What are the two types of observation for visuai examination?
API 577. 9.3 1
'1 . Drrect2. lndirect3. Remote4. Both No's 1 and 2
171 Cobalt 60 is used for steel thickness of:
APt 577 , 9.8.4
1 1.5 in - 4.0 in2.0.25in.-30in315rn*7.0in.4. 1.0 rn. - 7.0 in
_ ______-__ \_/
172. For UT examination the temperature of the calibration standard should be within oF of thepart to be examined
APr 577, 9.9 1
1. 1252.403. 504.25
173 Which of the following is an API recommended practice dealing with hardness testing?
APt 577, I 10
1 API RP 5822 API RP 5103 API RP 5774 API RP 622
174 What ls the overall arrangement of the grains, grain boundaries and phases in a casting called?
APt 577, 1A.2.1
1 Macrostructure of the metal2 Fully killed structure3. Microstructure of the metal4. None of the above
175. The parts of a weld composes three zones, one of these is:
APt 577, 10.2.3
1. Base metal2 IIAZ3. Weld metal4. Any of the above
176. A pure metal has a melting temperature that is:
APt 577, 10.3 1
1. Below its solidification temperature2. Above its solidification temperature3. Above its transition temperature4. Below its transition temperature
'177. Susceptibility to wet H2S cracking in carbon steels is reduced if hardness levels are maintainedbelow
APt 577, 10.4.3
1HRC222. HRA223. HV 554. DPH 100
\_/
178. What is the definition of q product analysis?
APt 577, 10.8
1. Chemical analysis of an ingot or billet2. Chemical analysis of an intermediate product3. Chemical analysis of the end product4.None of the above
179. What is the purpose of the carbon equivalent equation?
APt577, 10.9.1
1. To help evaluate the weldability of austenitic stainless steels2, To help evaluate the weldability of carbon and low-alloy steel3. To determine the carbon content of a weld metal4. None ofthe above
180. Austenitic stainless steels are iron-based alloys and typically contain low carbon, chromium, andnickel. The nickel percentage is typically between:
APt 577,10.10.1
1.5-252.10 -203.15-324.8-37
181. One of the adverse effects of using cellulosic electrodes is:
API 577 , 11.2.1
1. Deep penetration2. Shallow penetration3. Low diffusible hydrogen4.None of the above
182. Which of the following identifies the Steels for Hydrogen Service at Elevated Temperatures andPressures in Petroleum Refineries and Petrochemical Plants?
APt 571, 5.'1.3.'1.91.RP 9342.RP 5813.RP 9414.RP 0198
'183. The cracking found has many branches and may be visually detectable by a craze-crackedappearance of the surface. Which of the following damage mechanisms is this describing?
APl571,4.5.1.5(c )
l.Chloride Stress Corrosion Cracking2.Hydrogen Cracking3.Metal Fatigue4.Embrittlement
184. Evidence of thinning when sulfidation takes place can be detected by?
API 571 , a a.27(c )
l.External UT2 RT profile3.PT4.Both 1 & 2
185. Erosion rs described as?
API 571 ,4 2.14.1(a)
l.Accelerated mechanical removal of surface material resulting from impact of solids2.Falgue cracking3.A form of corros¡on that occul's from moisture associated with atmospheric conditions4.Corrosion from water trapped under insulation
ANSWER KEY
1.
2.3.4.
b.7.Lq
10.11.12.13.14.15.16.17.18.19.20.21.22.23.24.25.26.27.28.29.30.3'1.
32.JJ,34.?A
Jb,1'7
38.20
40.41.42.43.44.45.46.47.48.49.50.51.52.53.54.EE
56,57,58.
a
4J1.)
a
4
2I
¿a
I
a)4, b)11
2J4
1
4a
1
J1
4
4Ja
4a
42¿
4a
I
41
41
41
22I
1
4
troa60261. 262. 1
63264 1
654oo. 4o/. I
68. 2bV. J74. 271 472. 273. 474. 1
75. 376377. 278. 1
79480381. 2ó¿. tlóJ, J84. 485. 286387288489 1
on1ol ?
92493 1
94. 4
95496497398 1
oo1100 34
^4 aIU I J
102 1
103. 4
104. 1
105 2106 4147 4108. 2109. 21 '10.
-?
111. 1
112 2113 2114. 1
115. 4116. 4
117. 2118. 4119. 4120. 4121. 2122, 2123. 2124. 1
125. 4126. 4127. 3128. 1
129. 3130. 4131. 4132. 4133. 1
134. 4135 1
136 4137. 4138. 4139. 4ua. 2tr41. 3142. 1
143. 2144. 3145. 1
146. 4147. 1
148. 4149. 4150. 4151. 4152. 1
153. 4154. 4155. 4156. 4157. 1
158. 2159. 2160. 4161. 4162. 2163. I164. 4't65. 2166. 1
167. 3168. ?169. 3174. 4171. 3172. 4173. 1
174. 3
175. 4176. 2177. 1
178. 3179. 2180. 4181. 1
182. 3183. 1
184. 4185. 1
