Mark's API 510 STUDY GUIDE
2026-2027
Expert-Verified Questions and Answers
(With A+ Grades Guarantee)
,Which of the following activities is NOT included in the B
scope of API 510?
- A) rerating a vessel
- B) Operating a vessel.
- C) replacing a vessel head
- D) internally inspecting a vessel
Which of the following activities is NOT included in the C
scope of API 510?
- A) setting relief device intervals
- B) performing vessel alterations
- C) Performing vessel fabrication
- D) performing vessel maintenance
Which of the following equipment types is NOT covered by D
API 510?
a) Heats exchanger
b) Safety relief valve
c) Distillation column
d) Process heater (furnace)
API 510 can be used: D
a) only by refining industries
b) only by chemicals
c) only by petrochemical industries
d) By petro-chemical facilities and other industry.
API 510 takes effect: E
a) During the design stage of the vessel construction.
b) During the fabrication stage of the vessel construction.
c) Once the fabrication hydro or pneumatic test is
completed
d) Once the nameplate is attached
e) Once the vessel is placed in service.
f) Once the vessel has an operation problem
API 510 covers vessels constructed to which fabrication D
code(s)?
a) only ASME B&PV Sect.VIII
b) only ASME & PV Sect.VIII and the API / ASME code for
Unfired Pressure Vessels
c) ASME B&PV Sect.VIII and other current codes
d) Any fabrication code.
When does API 510 stop applying to vessels? D
a) In-service but have proven they do not corrode
b) In-service and the corrosion rate is less than 0.005 ipy
c) Out of service, but stored for a future service
d) Retired and abandoned
e) Retired, removed and scrapped
During repairs & alterations most of the code requirements C
come from:
a) API 510
b) ASME SECTION VIII
c) ASME Section VIII or the construction code.
d) The construction code
During a vessel repair, if there is a conflict between the A
requirements of API 510 and the construction code which
should be followed?
a) API 510
b) The construction code
c) Either code based on the Inspector's recommendation
d) The code with the most stringent requirements
,During a vessel alteration, if there is a conflict between the A
requirements of API 510 and the construction code which
should be followed?
a) API 510
b) The construction code
c) Either code based on the Inspector's recommendation
d) The code with the most stringent requirements
Companies that use API 510 must: C
a) Employ an authorized inspection agency
b) Have access to an authorized inspection agency
c) Either employ or have access to an authorized
inspection agency.
d) Employee professional engineers
e) Pay all API 510 contract inspectors $62.50 / hr
Which of the following individuals must be directly E
employed by the Owner?
a) Authorized Inspector
b) Examiner
c) Pressure Vessel Engineer
d) Repair Organization
e) No one - all can be contracted personnel.
Who is responsible for responding to inspection results C
that require corrective action?
a) Engineer
b) Maintenance Department
c) Owner / User
d) Pressure Equipment Specialist
An in-service vessel is being repaired or altered. If there is C
a conflict between the requirements of API 510 and the
legal jurisdiction, which should be followed?
a) API 510
b) The Legal Jurisdiction
c) The one with the most stringent requirements.
d) Either set of the requirements based on Engineer and AI
approval
An in-service vessel is inspected. If there is a conflict C
between API 510 and the legal jurisdiction, which should
be followed?
a) API 510
b) The Legal Jurisdiction
c) The one with the most stringent requirements
d) Either set of the requirements based on Engineer and AI
approval
Which of the following vessels, that may be exempted from D
API 510, should be considered for inclusion in the
Owner/User's API 510 program?
a) 140' Low Pressure Storage Tank
b) Oil Mist Accumulator
c) Small Filter
d) Vacuum Flasher
Which code is used for Fitness for Service evaluations? A
a) API 579
b) API 660
c) API 2201
d) ASME B&PV Section V
Which code is used for RBI assessments? C
a) API 573
b) API 579
c) API 580
d) API 2201
, During an in-service internal inspection, a crack is B
discovered on a longitudinal weld. This crack can be
evaluated to which industry document?
a) API 510
b) API 579
c) ASME B&PV Section VI
d) Cracks are never allowed in an in-service vessel.
Which document provides requirements for Hot Tapping? D
a) API 578
b) API 579
c) API 651
d) API 2201
e) API 2217
Which document provides information on Damage B
Mechanisms in the Refining Industry?
a) API 570
b) API 571.
c) API 577
d) ASME Section V
e) ASME Section XI
Which document provides information on Corrosion Under C
Insulation and Fireproofing?
a) API 571
b) API 581
c) API 583.
d) ASME B16.5
e) NACE SP1488
Which document provides information on repair of D
Pressure Equipment & Piping?
a) API 581
b) API 584
c) API 598
d) ASME PCC-2
Which document provides information on Integrity A
Operating Windows?
a) API 584
b) API 585
c) API 2201
d) ASME PCC-1
e) ASME Section III
Which document provides information on Material A
Identification of Alloy Materials?
a) API 578
b) API 584
c) API 598
d) ASME PCC-1
e) NACE SP0170
Which document provides information on protecting C
Austenitic Alloys from Polythionic Acid Stress Corrosion
Cracking?
a) API 583
b) API 584
c) NACE SPO170
d) WRC Bulletin 412
When performing controlled deposition welding, supporting D
technical information can be found in:
a) API 1104
b) API 2201
c) ASME Section VIII
d) WRC Bulletin 412
2026-2027
Expert-Verified Questions and Answers
(With A+ Grades Guarantee)
,Which of the following activities is NOT included in the B
scope of API 510?
- A) rerating a vessel
- B) Operating a vessel.
- C) replacing a vessel head
- D) internally inspecting a vessel
Which of the following activities is NOT included in the C
scope of API 510?
- A) setting relief device intervals
- B) performing vessel alterations
- C) Performing vessel fabrication
- D) performing vessel maintenance
Which of the following equipment types is NOT covered by D
API 510?
a) Heats exchanger
b) Safety relief valve
c) Distillation column
d) Process heater (furnace)
API 510 can be used: D
a) only by refining industries
b) only by chemicals
c) only by petrochemical industries
d) By petro-chemical facilities and other industry.
API 510 takes effect: E
a) During the design stage of the vessel construction.
b) During the fabrication stage of the vessel construction.
c) Once the fabrication hydro or pneumatic test is
completed
d) Once the nameplate is attached
e) Once the vessel is placed in service.
f) Once the vessel has an operation problem
API 510 covers vessels constructed to which fabrication D
code(s)?
a) only ASME B&PV Sect.VIII
b) only ASME & PV Sect.VIII and the API / ASME code for
Unfired Pressure Vessels
c) ASME B&PV Sect.VIII and other current codes
d) Any fabrication code.
When does API 510 stop applying to vessels? D
a) In-service but have proven they do not corrode
b) In-service and the corrosion rate is less than 0.005 ipy
c) Out of service, but stored for a future service
d) Retired and abandoned
e) Retired, removed and scrapped
During repairs & alterations most of the code requirements C
come from:
a) API 510
b) ASME SECTION VIII
c) ASME Section VIII or the construction code.
d) The construction code
During a vessel repair, if there is a conflict between the A
requirements of API 510 and the construction code which
should be followed?
a) API 510
b) The construction code
c) Either code based on the Inspector's recommendation
d) The code with the most stringent requirements
,During a vessel alteration, if there is a conflict between the A
requirements of API 510 and the construction code which
should be followed?
a) API 510
b) The construction code
c) Either code based on the Inspector's recommendation
d) The code with the most stringent requirements
Companies that use API 510 must: C
a) Employ an authorized inspection agency
b) Have access to an authorized inspection agency
c) Either employ or have access to an authorized
inspection agency.
d) Employee professional engineers
e) Pay all API 510 contract inspectors $62.50 / hr
Which of the following individuals must be directly E
employed by the Owner?
a) Authorized Inspector
b) Examiner
c) Pressure Vessel Engineer
d) Repair Organization
e) No one - all can be contracted personnel.
Who is responsible for responding to inspection results C
that require corrective action?
a) Engineer
b) Maintenance Department
c) Owner / User
d) Pressure Equipment Specialist
An in-service vessel is being repaired or altered. If there is C
a conflict between the requirements of API 510 and the
legal jurisdiction, which should be followed?
a) API 510
b) The Legal Jurisdiction
c) The one with the most stringent requirements.
d) Either set of the requirements based on Engineer and AI
approval
An in-service vessel is inspected. If there is a conflict C
between API 510 and the legal jurisdiction, which should
be followed?
a) API 510
b) The Legal Jurisdiction
c) The one with the most stringent requirements
d) Either set of the requirements based on Engineer and AI
approval
Which of the following vessels, that may be exempted from D
API 510, should be considered for inclusion in the
Owner/User's API 510 program?
a) 140' Low Pressure Storage Tank
b) Oil Mist Accumulator
c) Small Filter
d) Vacuum Flasher
Which code is used for Fitness for Service evaluations? A
a) API 579
b) API 660
c) API 2201
d) ASME B&PV Section V
Which code is used for RBI assessments? C
a) API 573
b) API 579
c) API 580
d) API 2201
, During an in-service internal inspection, a crack is B
discovered on a longitudinal weld. This crack can be
evaluated to which industry document?
a) API 510
b) API 579
c) ASME B&PV Section VI
d) Cracks are never allowed in an in-service vessel.
Which document provides requirements for Hot Tapping? D
a) API 578
b) API 579
c) API 651
d) API 2201
e) API 2217
Which document provides information on Damage B
Mechanisms in the Refining Industry?
a) API 570
b) API 571.
c) API 577
d) ASME Section V
e) ASME Section XI
Which document provides information on Corrosion Under C
Insulation and Fireproofing?
a) API 571
b) API 581
c) API 583.
d) ASME B16.5
e) NACE SP1488
Which document provides information on repair of D
Pressure Equipment & Piping?
a) API 581
b) API 584
c) API 598
d) ASME PCC-2
Which document provides information on Integrity A
Operating Windows?
a) API 584
b) API 585
c) API 2201
d) ASME PCC-1
e) ASME Section III
Which document provides information on Material A
Identification of Alloy Materials?
a) API 578
b) API 584
c) API 598
d) ASME PCC-1
e) NACE SP0170
Which document provides information on protecting C
Austenitic Alloys from Polythionic Acid Stress Corrosion
Cracking?
a) API 583
b) API 584
c) NACE SPO170
d) WRC Bulletin 412
When performing controlled deposition welding, supporting D
technical information can be found in:
a) API 1104
b) API 2201
c) ASME Section VIII
d) WRC Bulletin 412
