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API 510 practice questions
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Fragen in diesem Quiz (74)
1The application of AP I 510 is restricted to organizations that:
- AFabricate or build pressure vessels according to ASME B&PV Code
- BEmploy or have access to an authorized inspection agency.
- CManufacture or inspect pressure vessels according to NBIC.
- DHire or have access to an unsanctioned inspection agency.
2API 510 Inspection Code is only applicable to pressure vessels used by the petroleum and chemical process industries that:
- Aare being fabricated for the petroleum/chemical industries.
- Bcan be fabricated to ASME B&PV Code and inspected by NBIC inspectors
- Cwill be place in service after fabrication to the ASME B&PV Code
- Dhave been placed in service; inspected and/or repaired by an authorized agency.
3Which of the following is an example of a pressure vessel covered by API 510. (AII of the vessels are in-service).
- APressure vessel on an ocean-going ship, operates at 100 psig & 100° F.
- BPressure vessel in an oil refinery, operates at 5 psig and 70° F.
- CPressure vessel in an oil refinery, operates at 100 psig and 200° F.
- DPressure vessel in an oil refinery, vol. of 4 cU. ft., & operates at 70 psig and 70° F.
4If there is a conflict between the ASME Code and API 510 for vessels that have been placed in service, the requirements of:
- AAPI 510 shall take precedence over the ASME Code
- BASME Code shall take precedence over API 510.
- CNBIC shall be used as arbitration Code
- DThe owner/user shall take precedence over both Codes
5One type of Authorized Inspection Agency is:
- AAn inspection organization that does inspections.
- BAn insurance/inspection agency which does not write pressure vessel insurance.
- CAn owner/user of pressure vessels who maintains an inspection organization only for his own equipment.
- DAn independent third party consultant.
6The term "minimum allowable shell thickness" is the thickness:
- Aessential for the shell and heads of a vessel.
- Brequired for each element of a vessel.
- Cnecessary for the shell of a vessel.
- Dincluding the corrosion allowance for the shell of a vessel.
7Lowering of the maximum allowable working pressure or temperature rating of a vessel or both below the design conditions is:
- AA not a permissible way to provide for corrosion.
- BThe preferred way to provide for corrosion.
- CThe only way to keep a vessel in service when it is corroded.
- DA permissible way to provide for corrosion.
8An owner-user is responsible for developing, documenting, implementing, executing, and assessing pressure vessel inspection systems and inspection procedures that will meet the requirements of API 510. These systems and procedures will be:
- AMaintained in an engineering procedure document.
- BKept as a standard procedure.
- CContained in a quality assurance inspection manual.
- DIn hand and available at owner-user headquarters.
9Safety precautions are important in pressure vessel inspection because of the limited access to and the confined spaces of pressure vessels. Out of the organizations listed, which is the primary one that should be reviewed and followed?
- AASME
- BOSHA
- CNFPA
- DNBIC
10______________________ may occur if equipment is subjected to temperatures above those
for which it is designed.- ACreep
- BBrittle fracture
- CStress Corrosion
- DErosion
11lf a probable corrosion rate cannot be determined from reviewing data from the same or similar service vessels 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.
- A500
- B1000
- C5000
- D10000
12The maximum allowable working pressure for the continued use of a pressure vessel shall be based on computations determined by using the:
- ALatest edition of the National Boiler Inspection Code or the construction code lo which the vessel was built.
- BLatest edition of the ASME Code or the construction code to which the vessel was built.
- CLatest edition of the API/ASME Code or the construction code to which the vessel was built.
- DLatest edition of the Underwriters Laboratories Code or the construction code lo which the vessel was built.
13Out of the many methods of inspection ____________________ is considered the most important and the most universally accepted method of inspection.
- ARadiographic examination
- BCareful visual inspection
- CUltrasonic thickness measurement
- DHammer testing
14If external or internal coverings, such as insulation, refractory protective linings, and corrosion resistant linings are in good condition and there is no reason to suspect that an unsafe condition is behind them,:
- Ait is not necessary to remove them for inspection
- Bit is necessary to remove them completely for inspection
- Cit is necessary to partially remove them for inspection
- Dit is required to remove them completely for inspection on some set interval
15What API standard provides more information on the inspection of piping, valves and fittings associated with pressure vessels?
- AAPI Recommended Practice 576
- BAPI Recommended Practice 575
- CAPI Recommended Practice 574
- DAPI Recommended Practice 573
16For a corroded area of considerable size in which the circumferential stresses govern, the least thickness along the most critical element of the area may be averaged over a length not exceeding the following:
16a. For vessels with inside diameters less than or equal to 60 inches—
16b. For vessels with inside diameters greater than 60 inches--- A1/4 the vessel diameter or 5 inches, whichever is less.
- B1/2 the vessel diameter or 10 inches, whichever is less
- C1/4 the vessel diameter or 15 inches, whichever is less
- D1/2 the vessel diameter or 20 inches, whichever is less
- E1/3 the vessel diameter or 40 inches, whichever is less
- F1/4 the vessel diameter or 30 inches, whichever is less.
- G1/3 the vessel diameter or 50 inches, whichever is less.
- H1/4 the vessel diameter or 25 inches, whichever is less.
17For corrosion calculations the surface of the weld is considered to be:
- A1 inch on either side of the weld or twice the minimum thickness on either side of the weld, whichever is greater
- B2 inches on either side of the weld or 2 times the minimum thickness on either side of the weld, whichever is greater
- C4 inches on either side of the weld or 4 times the minimum thickness on either side of the weld, whichever is greater
- D6 inches on either side of the weld or 6 times the minimum thickness on either side of the weld, whichever is greater
18Under what conditions is an internal field inspection of a newly installed pressure vessel waived?
- AThe contractor installing the vessel assures the owner-user that the vessel is satisfactory for its intended service.
- BA manufacturer’s data report assuring the vessel is satisfactory for its intended service is available.
- CThe owner-user assures the inspector that the vessel is satisfactory for its intended service.
- DThe manufacturer orally assures the owner-user that the vessel is satisfactory for its intended service
19An above ground pressure vessel shall be given a visual external inspection, preferably while in operation, at least every _________ years or at the same interval as the internal, whichever is less
- A2
- B3
- C5
- D10
20The 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 or __________ years whichever is less.
- A10
- B15
- C5
- D12
21In cases where the remaining safe operating life is estimated to be less than 4 years, the inspection interval may be the full remaining safe operating life up to a maximum of ____ years.
- A1
- B2
- C3
- D4
22If both the ownership and the location of a vessel are changed, what must happen before it is reused?
- AIt must be internally and externally inspected
- BAII lhe records must be reviewed.
- CIt must be thoroughly ultrasonically checked.
- DIt must have all the paper work transferred to the new owner.
23A 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?
- A0.266250 inches/year
- B0.532500 inches/ year
- C0.088750 inches/year
- D0.044375 inches/year
24When must a pressure test be performed on a pressure vessel?
- AWhen the contractor working on the vessel deems it is necessary.
- BWhen the API authorized pressure vessel inspector believes that it is necessary.
- CWhen the safety group of the owner-user requests it.
- DWhen the NFPA requests it.
25Who is authorized to test and repair a pressure relief valve?
- AAn organization experienced in PRV maintenance.
- BA valve repair shop.
- CA certified pressure vessel inspector.
- DA contractor' with valve mechanics.
26What is the maximum inspection or testing interval of a pressure-relieving device?
- A15 years.
- B12 years.
- C10 years.
- D20 years.
27What determines the inspection interval of pressure-relieving devices?
- AThe interval is determined by the authorized pressure vessel inspector.
- BThe interval is determined by the owner-user.
- CThe interval is determined by the performance of the device.
- DThe interval is determined by the size of the device.
28The following is not normally found in pressure vessel records.
- AManufacturers data reports.
- BVessel identification numbers
- CPiping past the first vessel flange.
- DRelief valve information.
29When repairs or alterations are to be performed on a pressure vessel, all materials, and all welding procedures that are to be used must be approved by:
- Athe insurance carrier for the company that the pressure vessel belongs to and the owner-user of the pressure vessel.
- Bthe owner-user and the contractor performing the repairs or alterations lo the pressure vessel.
- Cthe API authorized pressure vessel inspector and, if necessary, by an engineer experienced in pressure vessel design, fabrication, or inspection.
- Dthe original vessel fabricator and the insurance carrier for the company that owns the pressure vessel.
30What type of repairs can an authorized inspector give prior general authorization for?
- AMajor repairs that require pressure tests.
- BAlterations that require pressure tests.
- CMajor alterations that require pressure tests.
- DLimited or routine repairs that will not require pressure tests.
31When does an inspector normally approve all specified repair and alteration work?
- AWork is approved after the work contractor certifies the work to be satisfactory and the contractor has pressure tested the vessel.
- BWork is approved by a process/chemical engineer for the owner-user and the contractor has pressure tested the vessel.
- CWork is approved after an inspection by the authorized inspector has proven the work lo be satisfactory and any required pressure test has been witnessed by the him.
- DWork is approved after an inspection and test by the contractor and the unit operators accept the vessel.
32Who should be consulted before repairing a crack at a discontinuity, where stress concentrations may be serious?
- AThe operators of the vessel.
- BThe owner-user.
- CAn engineer experienced in the operation of the vessel.
- DAn engineer experienced in pressure vessel design
33All repair and alteration welding shall be in accordance with the applicable requirements of the:
- ANBIC Code
- BAWS D1.1 Welding Code
- CASME Code Section VIII.
- DNFPA Welding Code
34The repair organization shall use qualified welders and welding procedures qualified in accordance with the applicable requirements of:
- ASection V of the ASME Code
- BSection IX of the ASME Code
- CAWS 01.1 Welding Code
- DAPI Standard 1104, Welding.
35The repair organization shall maintain records of its qualified welding procedures and its welding performance qualifications. These records shall be available to the prior to the start of welding.
- Aoperator
- Bowner·-user·
- Cwelder
- Dinspector
36For alterations or repairs of vessels initially post weld heat treated as a code requirement and constructed 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.
- A200
- B300
- C400
- D500
37A carbon steel (A-285 GR C) vessel must be repaired by welding in a flush patch (replacing a corroded area). Impact testing is not required the vessel is in caustic service and was originally post weld heat treated. Which of the following is correct?
- AThe repair may be post weld heat treated.
- BThe repair may be pre-heated to 300 degrees F. while welding and PWHT waived.
- CThe repair may be preheated to 200 degrees F. while welding and PWHT waived.
- DNone of above.
38If local post welds heat treatment is approved for a vessel repair (a completed 360 degree band around the vessel is not used - only a localized spot), what are the minimum number of thermocouples required around the localized area to monitor the temperature?
- A1
- B2
- C4
- D6
39When 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 UT per ASME Section V. This UT inspection should be made ___________ hours after repairs have been completed for equipment in hydrogen service, especially for chromium-molybdenum alloys that could be affected by delayed cracking.
- A12
- B24
- C36
- D42
40When are fillet welded patches (lap patches) allowed.
- AThey may be only used in vessels with shells 3/8" thick or less.
- BThey may be used only if approved by the operators.
- CThey may be used only on low pressure vessels.
- DThey are used for only temporary repairs.
41Carbon 01' alloy steel with a carbon content over ______ percent shall not be welded.
- A0.30
- B0.35
- C0.40
- D0.45
42Acceptance criteria for a welded repair 01' alteration should include NDE techniques that are in accordance with the:
- AApplicable section of the NBIC.
- BApplicable section of the ASME Code
- CJurisdiction.
- Downer-user.
43A pressure test is normally required after:
- Aan alteration.
- Ba repair.
- Ca lightning strike.
- Da unit upset.
44When is a rerating of a pressure vessel considered complete?
- A1. When the pressure vessel engineer approves the rerating.
- B2. When the authorized construction organization attaches the nameplate to the rerated vessel.
- C3. When the API authorized PV inspector oversees the attachment of an API 510 nameplate or stamping.
- D4. 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 years can be recertified by:
- A1. being employed by a refinery.
- B2. being licensed by the jurisdiction.
- C3. an oral examination.
- D4. a written examination.
4676. 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 al elevated temperatures?
- A1. Weld rod diameter
- B2. Effects of temper embrittlement
- C3. Outgassing base metal
- D4. Weld bead size
4777. A 12 in. nozzle is being installed in a vessel where the largest existing opening is 10 in. This is considered:
- A1. A repair
- B2. An alteration
- C3. A rerating
- D4. A maintenance activity
4878. How many years of experience are required when the candidate does not have an education level equivalent to a high school education?
- A1. 5
- B2. 3
- C3. 2
- D4. 10
4979. May the API 510 Inspector be assisted by non-certified individuals when visual inspections are performed?
- A1. Yes, when authorized by API
- B2. Yes
- C3. No
- D4. Yes, when properly trained and qualified
5080. When can preheat at 3000 F in lieu of PWHT not be applied in the repairs of a pressure vessel?
- A1. For P-No. 1 materials
- B2. For P-No. 3 materials
- C3. For P·No. 4 materials
- D4. None of the above
5181. Which of the following conditions must be met to qualify vessels for on-stream inspections when the general corrosion rate is less than 0.005 in. per year and has a remaining life greater than 10 years?
- A1. The vessel is strip lined
- B2. The corrosive character of the contents has been established for at least 5 years
- C3. Not more than two questionable conditions were disclosed at the previous external inspection
- D4. The operating temperature exceeds the lower temperature limits for the materials creep rupture range
5282. The definition of "t required" is:
- A1. Minimum nominal thickness in inches for a given location or component
- B2. Minimum actual thickness in inches for a given location 01' component
- C3. Minimum thickness in inches for a given location or component
- D4. Minimum allowable thickness in inches for a given location or component
5383. Which of the following widely scattered pitting cannot be ignored?
- A1. The total area of the pits does not exceed 7 square inches within an 9 inch diameter circle
- B2. No pit depth is greater than 1/3 the vessel thickness
- C3. The sum of the pit dimensions along any straight line within the circle does not exceed 2.5 inches
- D4. The total area of the pits does not exceed 7 square inches within an 8 inch diameter circle
5484. Which of the following is not an alteration:
- A1. Increasing the diameter of a shell section
- B2. Decreasing the temperature with impact testing of materials required
- C3. Adding a NPS 12 nozzle in a vessel that has two NPS 10 nozzles
- D4. Adding a NPS 10 nozzle in a vessel that has two NPS 12 nozzles
5585. A pressure vessel whose thickness does not exceed 2 inches has a MDMT of - 20° F. Per API
510 what is the minimum test temperature permitted?- A1. 30° F
- B2. - 10° F
- C3. - 30° F
- D4. 10° F
5686. If a filler metal is used that has a minimum specified tensile strength that is lower than that of the base metal, which of the following conditions must be met?
- A1. The increased thickness may have rounded corners
- B2. The repair thickness shall not be more the 60% of the required base metal thickness, excluding corrosion allowance
- C3. The repair shall be made with a minimum of two passes
- D4. The chemistry of the filler metal shall be taken at the completion of welding
5787. How are safety relief devices isolated from the vessel during hydrostatic testing?
- A1. Test levers are wired down
- B2. Removed or gagged
- C3. Springs are tightened
- D4. None of the above
58107. Which of the following is a requirement when installing a patch?
- A1. Always perform pressure test after repair
- B2. Having rounded corners
- C3. Ultrasonically examine adjacent base material before welding
- D4. Having rounded corners with a minimum 1 in. radius
59108. Who decides how long a temporary patch may remain in place?
- A1. Owner-user
- B2. Pressure vessel engineer & API Inspector
- C3. Pressure vessel engineer
- D4. API Inspector
60109. You have a corroded area which is 0.900 in. thick. The minimum thickness is calculated to be
1.000 in. the corrosion rate is 0.01 in. per year. Assuming a constant corrosion rate how much weld overlay must be applied to have a 10 year life?- A1. 0.10 in.
- B2. 0.20 in.
- C3. 1.300 in.
- D4. repair not permitted by API 510
61110. Who is notified when a repair to an ASME Section VIII, Division 2 vessel is required?
- A1. Pressure vessel engineer
- B2. API Inspector
- C3. Pressure vessel engineer & API Inspector
- D4. Manufacturer of vessel
62111. Who is responsible to keep records of pressure vessel inspections & repairs?
- A1. Owner -user
- B2. API Inspector
- C3. Pressure vessel engineer
- D4. Engineering manager
63114. Which of the following is defined as a repair organization?
- A1. An owner-user who repairs his or her own equipment
- B2. The holder of an ASME "S" stamp
- C3. A contractor whose qualifications are acceptable to the pressure vessel engineer
- D4. An individual or organization that is authorized by API
64112. Which NDE method is used to examine P-3, P-4, or P-5 base metal when repairs to stainless steel weld overlay is made?
- A1. MT
- B2. UT
- C3. RT
- D4. VT
65113. Quality assurance can be simply defined as:
- A1. The work necessary to restore a vessel to a condition suitable for safe operation
- B2. All planned, systematic, and preventative actions required to determine if materials, equipment or services will meet specified requirements
- C3. Work done by the OA Manager
- D4. Planned actions which determine that all NDE is performed correct
66115. How long must the temper bead repair be he Id at temperature after completion of the weld repair for an API 510 applications?
- A1. 5 hours
- B2. 1 hour
- C3. 4 hours
- D4. 2 hours
67116. Which of the following must be considered by the pressure vessel engineer when repairs are made to stainless steel weld overlay for equipment in hydrogen service?
- A1. Hardening of the weld metal due to grinding or arc gouging
- B2. Softening of base metal due to welding
- C3. PWHT to reduce impact properties
- D4. Outgassing base metal
68121. During an internal inspection of a pressure vessel a blister is found in one of the heads between knuckle and circumferential head to shell weld. What would be the most appropriate action?
- A1) Replace the head
- B2) Consult with a pressure vessel engineer
- C3) Drill the blister to relieve the pressure
- D4) Pressure test the vessel
69122. A pressure vessel contains the following nozzles, (2-NPS 6, 1-NPS 10 and 4-NPS 3). Which of the following would be an alteration?
- A1) Addition of an NPS 6 nozzle
- B2) Addition of an NPS 12 nozzle
- C3) Addition of an NPS 3/4 nozzle
- D4) Addition of three NPS 1 nozzles
70125. When an owner/user chooses to conduct a RBI assessni8nt it must include a systematic evaluation of:
- A1. Fatigue
- B2. Likelihood of failure
- C3. Associated consequence of failure
- D4. Both 2 & 3
71126. Examples of degradation mechanisms are:
- A1. Corrosion
- B2. Cracking
- C3. Creep
- D4. All the above
72127. It is essential that all RBI assessments be:
- A1. Reviewed by jurisdictional authorities
- B2. Understood by Engineering
- C3. Thoroughly documented
- D4. Defined in terms of API RP4467
73128. An RBI assessment may be used to ______ the 10 year inspection limit.
- A1. Increase or decrease
- B2. Increase
- C3. Decrease
- D4. Limit
74130. What is the maximum interpass temperature for a repair weld using the controlled deposition method that was originally PWHT’d?
- A1. 400°F
- B2. 600°F
- C3. 300°F
- D4. Not greater than that used in procedure qualification test.
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- Cuestionario de practica para estándar 510
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- Roberto Herrera
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