API 510 CLOSED BOOK PRACTICE EXAM
2025 QUESTIONS WITH ANSWERS
VERIFIED BY EXPERTS NEW GENERATION
API 510 says that widely scattered pitting can be ignored provided that the: - CORRECT
ANSWER>>>>remaining thickness is not less than 1/2 the minimum required thickness.
Rupture disks are commonly used - CORRECT ANSWER>>>>to protect a pressure relief valve
from corrosive products.
When repairs and alterations are being conducted, which individual or organization is
responsible - CORRECT ANSWER>>>>Repair Organization
Which code provides requirements for Hot Tapping? - CORRECT ANSWER>>>>API 2201
Catalytic reformer vessels may have creep damage if the operating temperature is above: -
CORRECT ANSWER>>>>900°F
The maximum inspection interval for a pressure relief device in normal service is based on: -
CORRECT ANSWER>>>>acceptable performance of the device with a maximum interval of 5
year.
A carbon steel vessel in caustic service has a temperature excursion up to 425°F. The vessel wall
is 1/2" thick. No PWHT has been performed. What type of deterioration could be expected? -
CORRECT ANSWER>>>>Stress corrosion cracking
During a vessel repair or alteration, when can controlled deposition welding be used as an
alternative for post weld heat treating? - CORRECT ANSWER>>>>For P1, P3, & P4 materials
All RBI assessments must be: - CORRECT ANSWER>>>>thoroughly documented.
Once vessel repair work is complete, who should approve the finished work? - CORRECT
ANSWER>>>>Authorized inspector
Which of the following activities is not included in the scope of API 510? - CORRECT
ANSWER>>>>Operating a vessel
Which type of corrosion is most easily missed by a visual examination? - CORRECT
ANSWER>>>>Uniform corrosion
The maximum allowable working pressure of a vessel is the: - CORRECT
ANSWER>>>>maximum pressure permitted at the top of the vessel.
The use of a fillet weld patch on a vessel's pressure boundary requires approval from the: -
CORRECT ANSWER>>>>Authorized inspector and the pressure equipment engineer
, During alterations, fabrication approvals (hold points) shall be designated by: - CORRECT
ANSWER>>>>authorized inspector
Per API 510, a PRV repair organization must: - CORRECT ANSWER>>>>Have a fully
documented quality assurance system and training program
During vessel repairs or alterations, welding records shall be: - CORRECT
ANSWER>>>>Available to the authorized inspector
Repairs Of vessel cracks at a serious stress concentration requires approval by: - CORRECT
ANSWER>>>>pressure vessel engineer
The seating surfaces on a relief device must have a flatness of: - CORRECT ANSWER>>>>3
light beads/bands
An "F" on the radiograph indicates: - CORRECT ANSWER>>>>The IQI is placed on film side
An inspector is evaluating a corroded area on the vessel per API 510. The area is marked off in a
grid with five longitudinal lines. Multiple thickness readings are taken on each longitudinal line.
When performing remaining life calculations for this corroded area, the current thickness reading
to use in the calculation is the: - CORRECT ANSWER>>>>Average thickness of the
longitudinal line with the lowest average
API 510 takes effect: - CORRECT ANSWER>>>>Once the vessel is placed in service
Erosion or corrosion in an exchanger shell that is adjacent to the bundle baffles can be most
easily found during an internal inspection with: - CORRECT ANSWER>>>>Flashlight beam
directed parallel to the shell's internal surface
During a vessel repair, if a preheat is substituted for a post-weld heat treatment, who is required
to review this substitution? - CORRECT ANSWER>>>>Pressure vessel engineer
Which of the following is NOT an acceptable method for repairing a locally thinned area that is
below acceptable thickness? - CORRECT ANSWER>>>>Install a thick-film coating to arrest
the corrosion
When qualifying a weld procedure using the SMAW process, which variable is considered an
essential variable? - CORRECT ANSWER>>>>Filler rod "F-number"
The remaining life of a vessel is 8 years. What is the maximum interval for the external
inspection? - CORRECT ANSWER>>>>4 years
An exchanger shell has a locally corroded area. The owner decides to repair this area with weld
buildup. During this repair, the shell should be: - CORRECT ANSWER>>>>checked for
distortion
2025 QUESTIONS WITH ANSWERS
VERIFIED BY EXPERTS NEW GENERATION
API 510 says that widely scattered pitting can be ignored provided that the: - CORRECT
ANSWER>>>>remaining thickness is not less than 1/2 the minimum required thickness.
Rupture disks are commonly used - CORRECT ANSWER>>>>to protect a pressure relief valve
from corrosive products.
When repairs and alterations are being conducted, which individual or organization is
responsible - CORRECT ANSWER>>>>Repair Organization
Which code provides requirements for Hot Tapping? - CORRECT ANSWER>>>>API 2201
Catalytic reformer vessels may have creep damage if the operating temperature is above: -
CORRECT ANSWER>>>>900°F
The maximum inspection interval for a pressure relief device in normal service is based on: -
CORRECT ANSWER>>>>acceptable performance of the device with a maximum interval of 5
year.
A carbon steel vessel in caustic service has a temperature excursion up to 425°F. The vessel wall
is 1/2" thick. No PWHT has been performed. What type of deterioration could be expected? -
CORRECT ANSWER>>>>Stress corrosion cracking
During a vessel repair or alteration, when can controlled deposition welding be used as an
alternative for post weld heat treating? - CORRECT ANSWER>>>>For P1, P3, & P4 materials
All RBI assessments must be: - CORRECT ANSWER>>>>thoroughly documented.
Once vessel repair work is complete, who should approve the finished work? - CORRECT
ANSWER>>>>Authorized inspector
Which of the following activities is not included in the scope of API 510? - CORRECT
ANSWER>>>>Operating a vessel
Which type of corrosion is most easily missed by a visual examination? - CORRECT
ANSWER>>>>Uniform corrosion
The maximum allowable working pressure of a vessel is the: - CORRECT
ANSWER>>>>maximum pressure permitted at the top of the vessel.
The use of a fillet weld patch on a vessel's pressure boundary requires approval from the: -
CORRECT ANSWER>>>>Authorized inspector and the pressure equipment engineer
, During alterations, fabrication approvals (hold points) shall be designated by: - CORRECT
ANSWER>>>>authorized inspector
Per API 510, a PRV repair organization must: - CORRECT ANSWER>>>>Have a fully
documented quality assurance system and training program
During vessel repairs or alterations, welding records shall be: - CORRECT
ANSWER>>>>Available to the authorized inspector
Repairs Of vessel cracks at a serious stress concentration requires approval by: - CORRECT
ANSWER>>>>pressure vessel engineer
The seating surfaces on a relief device must have a flatness of: - CORRECT ANSWER>>>>3
light beads/bands
An "F" on the radiograph indicates: - CORRECT ANSWER>>>>The IQI is placed on film side
An inspector is evaluating a corroded area on the vessel per API 510. The area is marked off in a
grid with five longitudinal lines. Multiple thickness readings are taken on each longitudinal line.
When performing remaining life calculations for this corroded area, the current thickness reading
to use in the calculation is the: - CORRECT ANSWER>>>>Average thickness of the
longitudinal line with the lowest average
API 510 takes effect: - CORRECT ANSWER>>>>Once the vessel is placed in service
Erosion or corrosion in an exchanger shell that is adjacent to the bundle baffles can be most
easily found during an internal inspection with: - CORRECT ANSWER>>>>Flashlight beam
directed parallel to the shell's internal surface
During a vessel repair, if a preheat is substituted for a post-weld heat treatment, who is required
to review this substitution? - CORRECT ANSWER>>>>Pressure vessel engineer
Which of the following is NOT an acceptable method for repairing a locally thinned area that is
below acceptable thickness? - CORRECT ANSWER>>>>Install a thick-film coating to arrest
the corrosion
When qualifying a weld procedure using the SMAW process, which variable is considered an
essential variable? - CORRECT ANSWER>>>>Filler rod "F-number"
The remaining life of a vessel is 8 years. What is the maximum interval for the external
inspection? - CORRECT ANSWER>>>>4 years
An exchanger shell has a locally corroded area. The owner decides to repair this area with weld
buildup. During this repair, the shell should be: - CORRECT ANSWER>>>>checked for
distortion
