Roberto Herrera
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Cuestionario de practica para estándar 510

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Roberto Herrera
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API 510 practice questions

API 510 practice questions

Question 1 of 74

1

The application of AP I 510 is restricted to organizations that:

Select one of the following:

  • Fabricate or build pressure vessels according to ASME B&PV Code

  • Employ or have access to an authorized inspection agency.

  • Manufacture or inspect pressure vessels according to NBIC.

  • Hire or have access to an unsanctioned inspection agency.

Explanation

Question 2 of 74

1

API 510 Inspection Code is only applicable to pressure vessels used by the petroleum and chemical process industries that:

Select one or more of the following:

  • are being fabricated for the petroleum/chemical industries.

  • can be fabricated to ASME B&PV Code and inspected by NBIC inspectors

  • will be place in service after fabrication to the ASME B&PV Code

  • have been placed in service; inspected and/or repaired by an authorized agency.

Explanation

Question 3 of 74

1

Which of the following is an example of a pressure vessel covered by API 510. (AII of the vessels are in-service).

Select one or more of the following:

  • Pressure vessel on an ocean-going ship, operates at 100 psig & 100° F.

  • Pressure vessel in an oil refinery, operates at 5 psig and 70° F.

  • Pressure vessel in an oil refinery, operates at 100 psig and 200° F.

  • Pressure vessel in an oil refinery, vol. of 4 cU. ft., & operates at 70 psig and 70° F.

Explanation

Question 4 of 74

1

If there is a conflict between the ASME Code and API 510 for vessels that have been placed in service, the requirements of:

Select one or more of the following:

  • API 510 shall take precedence over the ASME Code

  • ASME Code shall take precedence over API 510.

  • NBIC shall be used as arbitration Code

  • The owner/user shall take precedence over both Codes

Explanation

Question 5 of 74

1

One type of Authorized Inspection Agency is:

Select one or more of the following:

  • An inspection organization that does inspections.

  • An insurance/inspection agency which does not write pressure vessel insurance.

  • An owner/user of pressure vessels who maintains an inspection organization only for his own equipment.

  • An independent third party consultant.

Explanation

Question 6 of 74

1

The term "minimum allowable shell thickness" is the thickness:

Select one of the following:

  • essential for the shell and heads of a vessel.

  • required for each element of a vessel.

  • necessary for the shell of a vessel.

  • including the corrosion allowance for the shell of a vessel.

Explanation

Question 7 of 74

1

Lowering of the maximum allowable working pressure or temperature rating of a vessel or both below the design conditions is:

Select one or more of the following:

  • A not a permissible way to provide for corrosion.

  • The preferred way to provide for corrosion.

  • The only way to keep a vessel in service when it is corroded.

  • A permissible way to provide for corrosion.

Explanation

Question 8 of 74

1

An 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:

Select one or more of the following:

  • Maintained in an engineering procedure document.

  • Kept as a standard procedure.

  • Contained in a quality assurance inspection manual.

  • In hand and available at owner-user headquarters.

Explanation

Question 9 of 74

1

Safety 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?

Select one or more of the following:

  • ASME

  • OSHA

  • NFPA

  • NBIC

Explanation

Question 10 of 74

1

______________________ may occur if equipment is subjected to temperatures above those
for which it is designed.

Select one or more of the following:

  • Creep

  • Brittle fracture

  • Stress Corrosion

  • Erosion

Explanation

Question 11 of 74

1

lf 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.

Select one of the following:

  • 500

  • 1000

  • 5000

  • 10000

Explanation

Question 12 of 74

1

The maximum allowable working pressure for the continued use of a pressure vessel shall be based on computations determined by using the:

Select one of the following:

  • Latest edition of the National Boiler Inspection Code or the construction code lo which the vessel was built.

  • Latest edition of the ASME Code or the construction code to which the vessel was built.

  • Latest edition of the API/ASME Code or the construction code to which the vessel was built.

  • Latest edition of the Underwriters Laboratories Code or the construction code lo which the vessel was built.

Explanation

Question 13 of 74

1

Out of the many methods of inspection ____________________ is considered the most important and the most universally accepted method of inspection.

Select one of the following:

  • Radiographic examination

  • Careful visual inspection

  • Ultrasonic thickness measurement

  • Hammer testing

Explanation

Question 14 of 74

1

If 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,:

Select one of the following:

  • it is not necessary to remove them for inspection

  • it is necessary to remove them completely for inspection

  • it is necessary to partially remove them for inspection

  • it is required to remove them completely for inspection on some set interval

Explanation

Question 15 of 74

1

What API standard provides more information on the inspection of piping, valves and fittings associated with pressure vessels?

Select one of the following:

  • API Recommended Practice 576

  • API Recommended Practice 575

  • API Recommended Practice 574

  • API Recommended Practice 573

Explanation

Question 16 of 74

1

For 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--

Select one or more of the following:

  • 1/4 the vessel diameter or 5 inches, whichever is less.

  • 1/2 the vessel diameter or 10 inches, whichever is less

  • 1/4 the vessel diameter or 15 inches, whichever is less

  • 1/2 the vessel diameter or 20 inches, whichever is less

  • 1/3 the vessel diameter or 40 inches, whichever is less

  • 1/4 the vessel diameter or 30 inches, whichever is less.

  • 1/3 the vessel diameter or 50 inches, whichever is less.

  • 1/4 the vessel diameter or 25 inches, whichever is less.

Explanation

Question 17 of 74

1

For corrosion calculations the surface of the weld is considered to be:

Select one of the following:

  • 1 inch on either side of the weld or twice the minimum thickness on either side of the weld, whichever is greater

  • 2 inches on either side of the weld or 2 times the minimum thickness on either side of the weld, whichever is greater

  • 4 inches on either side of the weld or 4 times the minimum thickness on either side of the weld, whichever is greater

  • 6 inches on either side of the weld or 6 times the minimum thickness on either side of the weld, whichever is greater

Explanation

Question 18 of 74

1

Under what conditions is an internal field inspection of a newly installed pressure vessel waived?

Select one of the following:

  • The contractor installing the vessel assures the owner-user that the vessel is satisfactory for its intended service.

  • A manufacturer’s data report assuring the vessel is satisfactory for its intended service is available.

  • The owner-user assures the inspector that the vessel is satisfactory for its intended service.

  • The manufacturer orally assures the owner-user that the vessel is satisfactory for its intended service

Explanation

Question 19 of 74

1

An 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

Select one of the following:

  • 2

  • 3

  • 5

  • 10

Explanation

Question 20 of 74

1

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 or __________ years whichever is less.

Select one of the following:

  • 10

  • 15

  • 5

  • 12

Explanation

Question 21 of 74

1

In 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.

Select one of the following:

  • 1

  • 2

  • 3

  • 4

Explanation

Question 22 of 74

1

If both the ownership and the location of a vessel are changed, what must happen before it is reused?

Select one of the following:

  • It must be internally and externally inspected

  • AII lhe records must be reviewed.

  • It must be thoroughly ultrasonically checked.

  • It must have all the paper work transferred to the new owner.

Explanation

Question 23 of 74

1

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?

Select one of the following:

  • 0.266250 inches/year

  • 0.532500 inches/ year

  • 0.088750 inches/year

  • 0.044375 inches/year

Explanation

Question 24 of 74

1

When must a pressure test be performed on a pressure vessel?

Select one of the following:

  • When the contractor working on the vessel deems it is necessary.

  • When the API authorized pressure vessel inspector believes that it is necessary.

  • When the safety group of the owner-user requests it.

  • When the NFPA requests it.

Explanation

Question 25 of 74

1

Who is authorized to test and repair a pressure relief valve?

Select one of the following:

  • An organization experienced in PRV maintenance.

  • A valve repair shop.

  • A certified pressure vessel inspector.

  • A contractor' with valve mechanics.

Explanation

Question 26 of 74

1

What is the maximum inspection or testing interval of a pressure-relieving device?

Select one of the following:

  • 15 years.

  • 12 years.

  • 10 years.

  • 20 years.

Explanation

Question 27 of 74

1

What determines the inspection interval of pressure-relieving devices?

Select one of the following:

  • The interval is determined by the authorized pressure vessel inspector.

  • The interval is determined by the owner-user.

  • The interval is determined by the performance of the device.

  • The interval is determined by the size of the device.

Explanation

Question 28 of 74

1

The following is not normally found in pressure vessel records.

Select one of the following:

  • Manufacturers data reports.

  • Vessel identification numbers

  • Piping past the first vessel flange.

  • Relief valve information.

Explanation

Question 29 of 74

1

When 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:

Select one of the following:

  • the insurance carrier for the company that the pressure vessel belongs to and the owner-user of the pressure vessel.

  • the owner-user and the contractor performing the repairs or alterations lo the pressure vessel.

  • the API authorized pressure vessel inspector and, if necessary, by an engineer experienced in pressure vessel design, fabrication, or inspection.

  • the original vessel fabricator and the insurance carrier for the company that owns the pressure vessel.

Explanation

Question 30 of 74

1

What type of repairs can an authorized inspector give prior general authorization for?

Select one of the following:

  • Major repairs that require pressure tests.

  • Alterations that require pressure tests.

  • Major alterations that require pressure tests.

  • Limited or routine repairs that will not require pressure tests.

Explanation

Question 31 of 74

1

When does an inspector normally approve all specified repair and alteration work?

Select one of the following:

  • Work is approved after the work contractor certifies the work to be satisfactory and the contractor has pressure tested the vessel.

  • Work is approved by a process/chemical engineer for the owner-user and the contractor has pressure tested the vessel.

  • Work 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.

  • Work is approved after an inspection and test by the contractor and the unit operators accept the vessel.

Explanation

Question 32 of 74

1

Who should be consulted before repairing a crack at a discontinuity, where stress concentrations may be serious?

Select one of the following:

  • The operators of the vessel.

  • The owner-user.

  • An engineer experienced in the operation of the vessel.

  • An engineer experienced in pressure vessel design

Explanation

Question 33 of 74

1

All repair and alteration welding shall be in accordance with the applicable requirements of the:

Select one of the following:

  • NBIC Code

  • AWS D1.1 Welding Code

  • ASME Code Section VIII.

  • NFPA Welding Code

Explanation

Question 34 of 74

1

The repair organization shall use qualified welders and welding procedures qualified in accordance with the applicable requirements of:

Select one of the following:

  • Section V of the ASME Code

  • Section IX of the ASME Code

  • AWS 01.1 Welding Code

  • API Standard 1104, Welding.

Explanation

Question 35 of 74

1

The 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.

Select one of the following:

  • operator

  • owner·-user·

  • welder

  • inspector

Explanation

Question 36 of 74

1

For 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.

Select one of the following:

  • 200

  • 300

  • 400

  • 500

Explanation

Question 37 of 74

1

A 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?

Select one of the following:

  • The repair may be post weld heat treated.

  • The repair may be pre-heated to 300 degrees F. while welding and PWHT waived.

  • The repair may be preheated to 200 degrees F. while welding and PWHT waived.

  • None of above.

Explanation

Question 38 of 74

1

If 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?

Select one of the following:

  • 1

  • 2

  • 4

  • 6

Explanation

Question 39 of 74

1

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 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.

Select one of the following:

  • 12

  • 24

  • 36

  • 42

Explanation

Question 40 of 74

1

When are fillet welded patches (lap patches) allowed.

Select one of the following:

  • They may be only used in vessels with shells 3/8" thick or less.

  • They may be used only if approved by the operators.

  • They may be used only on low pressure vessels.

  • They are used for only temporary repairs.

Explanation

Question 41 of 74

1

Carbon 01' alloy steel with a carbon content over ______ percent shall not be welded.

Select one of the following:

  • 0.30

  • 0.35

  • 0.40

  • 0.45

Explanation

Question 42 of 74

1

Acceptance criteria for a welded repair 01' alteration should include NDE techniques that are in accordance with the:

Select one of the following:

  • Applicable section of the NBIC.

  • Applicable section of the ASME Code

  • Jurisdiction.

  • owner-user.

Explanation

Question 43 of 74

1

A pressure test is normally required after:

Select one of the following:

  • an alteration.

  • a repair.

  • a lightning strike.

  • a unit upset.

Explanation

Question 44 of 74

1

When is a rerating of a pressure vessel considered complete?

Select one of the following:

  • 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 or stamping.

  • 4. When the owner-user accepts the rerating from the rerating organization

Explanation

Question 45 of 74

1

An API certified inspector who has not been actively engaged, as such, within the previous three years can be recertified by:

Select one of the following:

  • 1. being employed by a refinery.

  • 2. being licensed by the jurisdiction.

  • 3. an oral examination.

  • 4. a written examination.

Explanation

Question 46 of 74

1

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 al elevated temperatures?

Select one of the following:

  • 1. Weld rod diameter

  • 2. Effects of temper embrittlement

  • 3. Outgassing base metal

  • 4. Weld bead size

Explanation

Question 47 of 74

1

77. A 12 in. nozzle is being installed in a vessel where the largest existing opening is 10 in. This is considered:

Select one of the following:

  • 1. A repair

  • 2. An alteration

  • 3. A rerating

  • 4. A maintenance activity

Explanation

Question 48 of 74

1

78. How many years of experience are required when the candidate does not have an education level equivalent to a high school education?

Select one of the following:

  • 1. 5

  • 2. 3

  • 3. 2

  • 4. 10

Explanation

Question 49 of 74

1

79. May the API 510 Inspector be assisted by non-certified individuals when visual inspections are performed?

Select one of the following:

  • 1. Yes, when authorized by API

  • 2. Yes

  • 3. No

  • 4. Yes, when properly trained and qualified

Explanation

Question 50 of 74

1

80. When can preheat at 3000 F in lieu of PWHT not be applied in the repairs of a pressure vessel?

Select one of the following:

  • 1. For P-No. 1 materials

  • 2. For P-No. 3 materials

  • 3. For P·No. 4 materials

  • 4. None of the above

Explanation

Question 51 of 74

1

81. 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?

Select one of the following:

  • 1. The vessel is strip lined

  • 2. The corrosive character of the contents has been established for at least 5 years

  • 3. 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

Explanation

Question 52 of 74

1

82. The definition of "t required" is:

Select one of the following:

  • 1. Minimum nominal thickness in inches for a given location or component

  • 2. Minimum actual thickness in inches for a given location 01' component

  • 3. Minimum thickness in inches for a given location or component

  • 4. Minimum allowable thickness in inches for a given location or component

Explanation

Question 53 of 74

1

83. Which of the following widely scattered pitting cannot be ignored?

Select one of the following:

  • 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 thickness

  • 3. The sum of the pit dimensions along any straight line within the circle does not exceed 2.5 inches

  • 4. The total area of the pits does not exceed 7 square inches within an 8 inch diameter circle

Explanation

Question 54 of 74

1

84. Which of the following is not an alteration:

Select one of the following:

  • 1. Increasing the diameter of a shell section

  • 2. Decreasing the temperature with impact testing of materials required

  • 3. Adding a NPS 12 nozzle in a vessel that has two NPS 10 nozzles

  • 4. Adding a NPS 10 nozzle in a vessel that has two NPS 12 nozzles

Explanation

Question 55 of 74

1

85. 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?

Select one of the following:

  • 1. 30° F

  • 2. - 10° F

  • 3. - 30° F

  • 4. 10° F

Explanation

Question 56 of 74

1

86. 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?

Select one of the following:

  • 1. The increased thickness may have rounded corners

  • 2. The repair thickness shall not be more the 60% of the required base metal thickness, excluding corrosion allowance

  • 3. The repair shall be made with a minimum of two passes

  • 4. The chemistry of the filler metal shall be taken at the completion of welding

Explanation

Question 57 of 74

1

87. How are safety relief devices isolated from the vessel during hydrostatic testing?

Select one of the following:

  • 1. Test levers are wired down

  • 2. Removed or gagged

  • 3. Springs are tightened

  • 4. None of the above

Explanation

Question 58 of 74

1

107. Which of the following is a requirement when installing a patch?

Select one of the following:

  • 1. Always perform pressure test after repair

  • 2. Having rounded corners

  • 3. Ultrasonically examine adjacent base material before welding

  • 4. Having rounded corners with a minimum 1 in. radius

Explanation

Question 59 of 74

1

108. Who decides how long a temporary patch may remain in place?

Select one of the following:

  • 1. Owner-user

  • 2. Pressure vessel engineer & API Inspector

  • 3. Pressure vessel engineer

  • 4. API Inspector

Explanation

Question 60 of 74

1

109. 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?

Select one of the following:

  • 1. 0.10 in.

  • 2. 0.20 in.

  • 3. 1.300 in.

  • 4. repair not permitted by API 510

Explanation

Question 61 of 74

1

110. Who is notified when a repair to an ASME Section VIII, Division 2 vessel is required?

Select one of the following:

  • 1. Pressure vessel engineer

  • 2. API Inspector

  • 3. Pressure vessel engineer & API Inspector

  • 4. Manufacturer of vessel

Explanation

Question 62 of 74

1

111. Who is responsible to keep records of pressure vessel inspections & repairs?

Select one of the following:

  • 1. Owner -user

  • 2. API Inspector

  • 3. Pressure vessel engineer

  • 4. Engineering manager

Explanation

Question 63 of 74

1

114. Which of the following is defined as a repair organization?

Select one of the following:

  • 1. An owner-user who repairs his or her own equipment

  • 2. The holder of an ASME "S" stamp

  • 3. A contractor whose qualifications are acceptable to the pressure vessel engineer

  • 4. An individual or organization that is authorized by API

Explanation

Question 64 of 74

1

112. 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?

Select one of the following:

  • 1. MT

  • 2. UT

  • 3. RT

  • 4. VT

Explanation

Question 65 of 74

1

113. Quality assurance can be simply defined as:

Select one of the following:

  • 1. The work necessary to restore a vessel to a condition suitable for safe operation

  • 2. All planned, systematic, and preventative actions required to determine if materials, equipment or services will meet specified requirements

  • 3. Work done by the OA Manager

  • 4. Planned actions which determine that all NDE is performed correct

Explanation

Question 66 of 74

1

115. How long must the temper bead repair be he Id at temperature after completion of the weld repair for an API 510 applications?

Select one of the following:

  • 1. 5 hours

  • 2. 1 hour

  • 3. 4 hours

  • 4. 2 hours

Explanation

Question 67 of 74

1

116. 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?

Select one of the following:

  • 1. Hardening of the weld metal due to grinding or arc gouging

  • 2. Softening of base metal due to welding

  • 3. PWHT to reduce impact properties

  • 4. Outgassing base metal

Explanation

Question 68 of 74

1

121. 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?

Select one of the following:

  • 1) Replace the head

  • 2) Consult with a pressure vessel engineer

  • 3) Drill the blister to relieve the pressure

  • 4) Pressure test the vessel

Explanation

Question 69 of 74

1

122. 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?

Select one of the following:

  • 1) Addition of an NPS 6 nozzle

  • 2) Addition of an NPS 12 nozzle

  • 3) Addition of an NPS 3/4 nozzle

  • 4) Addition of three NPS 1 nozzles

Explanation

Question 70 of 74

1

125. When an owner/user chooses to conduct a RBI assessni8nt it must include a systematic evaluation of:

Select one of the following:

  • 1. Fatigue

  • 2. Likelihood of failure

  • 3. Associated consequence of failure

  • 4. Both 2 & 3

Explanation

Question 71 of 74

1

126. Examples of degradation mechanisms are:

Select one of the following:

  • 1. Corrosion

  • 2. Cracking

  • 3. Creep

  • 4. All the above

Explanation

Question 72 of 74

1

127. It is essential that all RBI assessments be:

Select one of the following:

  • 1. Reviewed by jurisdictional authorities

  • 2. Understood by Engineering

  • 3. Thoroughly documented

  • 4. Defined in terms of API RP4467

Explanation

Question 73 of 74

1

128. An RBI assessment may be used to ______ the 10 year inspection limit.

Select one of the following:

  • 1. Increase or decrease

  • 2. Increase

  • 3. Decrease

  • 4. Limit

Explanation

Question 74 of 74

1

130. What is the maximum interpass temperature for a repair weld using the controlled deposition method that was originally PWHT’d?

Select one of the following:

  • 1. 400°F

  • 2. 600°F

  • 3. 300°F

  • 4. Not greater than that used in procedure qualification test.

Explanation

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