API 653 RECERTIFICATION TEST PAPER
2026 SCRIPT WITH ANSWERS GRADED A+
⩥ Radiographic Examination. Answer: The requirement for personnel to
be certified as meeting the ASNT SNT-TC-1A standards for performing
the examination.
⩥ Fillet Weld Repairs. Answer: The examination of repairs by the
appropriate nondestructive examination method.
⩥ API 653 Coverage. Answer: The standard that covers tanks fabricated
by welding or riveting.
⩥ Anchor Bolts Integrity. Answer: The recommended method of
checking the integrity of anchor bolts using a hammer test.
⩥ Impressed Current Cathodic Protection. Answer: A system effective
for tanks of all sizes, requiring regular inspection of the impressed
current sources.
⩥ Hot-Tap Procedures. Answer: Practices given in API 2201 for
performing hot-tap operations on tanks.
,⩥ Pyrophoric Iron. Answer: A deposit inside a tank that may need to be
continuously wetted to prevent ignition.
⩥ Brittle Fracture Evaluation. Answer: The evaluation to determine if a
tank requires a hydrotest, exempted if the shell is 0.450'' thick.
⩥ PQP Test Coupon. Answer: A test coupon used for qualification, with
a minimum thickness of 1-1/2'' as per the WPS.
⩥ Thin-Film Lining. Answer: A lining less than 20 mils thick, suitable
for tank bottoms with a minimum acceptable thickness of 0.050''.
⩥ Blasting Anchor Profile. Answer: The abrasive blasting should leave
an anchor profile of about 1.5-4 mils for installing a new tank coating.
⩥ Critical Zone. Answer: The area in carbon steel tanks operating above
200ºF where patch plates are not permitted.
⩥ Variable-Design Point Method. Answer: The method used to
determine the tank shell minimum thickness for tanks over 200-foot in
diameter.
⩥ Authorized Pairs. Answer: All pairs involved in the work must be
authorized by either the inspector or engineer.
, ⩥ UT Shell Examination. Answer: The examination requiring a number
of readings based on owner/operator judgment.
⩥ Holiday. Answer: A discontinuity in a protective coating that exposes
metal to the environment.
⩥ Reinforced Nozzles. Answer: Only nozzles with a size less than 2
NPS that do not require reinforcement.
⩥ Corrosion Rate Increase. Answer: The expected outcome when raising
the tank temperature, likely doubling the corrosion rate on the bottom-
side.
⩥ Legal Requirements Conflict. Answer: If API 653 conflicts with legal
requirements during tank repair, the most stringent requirements govern.
⩥ RT Discontinuities. Answer: Discontinuities never allowed during
welder qualification with radiographic testing, such as lack of fusion.
⩥ UT Light Intensity. Answer: The minimum light intensity required in
foot candles for performing a PT examination.
2026 SCRIPT WITH ANSWERS GRADED A+
⩥ Radiographic Examination. Answer: The requirement for personnel to
be certified as meeting the ASNT SNT-TC-1A standards for performing
the examination.
⩥ Fillet Weld Repairs. Answer: The examination of repairs by the
appropriate nondestructive examination method.
⩥ API 653 Coverage. Answer: The standard that covers tanks fabricated
by welding or riveting.
⩥ Anchor Bolts Integrity. Answer: The recommended method of
checking the integrity of anchor bolts using a hammer test.
⩥ Impressed Current Cathodic Protection. Answer: A system effective
for tanks of all sizes, requiring regular inspection of the impressed
current sources.
⩥ Hot-Tap Procedures. Answer: Practices given in API 2201 for
performing hot-tap operations on tanks.
,⩥ Pyrophoric Iron. Answer: A deposit inside a tank that may need to be
continuously wetted to prevent ignition.
⩥ Brittle Fracture Evaluation. Answer: The evaluation to determine if a
tank requires a hydrotest, exempted if the shell is 0.450'' thick.
⩥ PQP Test Coupon. Answer: A test coupon used for qualification, with
a minimum thickness of 1-1/2'' as per the WPS.
⩥ Thin-Film Lining. Answer: A lining less than 20 mils thick, suitable
for tank bottoms with a minimum acceptable thickness of 0.050''.
⩥ Blasting Anchor Profile. Answer: The abrasive blasting should leave
an anchor profile of about 1.5-4 mils for installing a new tank coating.
⩥ Critical Zone. Answer: The area in carbon steel tanks operating above
200ºF where patch plates are not permitted.
⩥ Variable-Design Point Method. Answer: The method used to
determine the tank shell minimum thickness for tanks over 200-foot in
diameter.
⩥ Authorized Pairs. Answer: All pairs involved in the work must be
authorized by either the inspector or engineer.
, ⩥ UT Shell Examination. Answer: The examination requiring a number
of readings based on owner/operator judgment.
⩥ Holiday. Answer: A discontinuity in a protective coating that exposes
metal to the environment.
⩥ Reinforced Nozzles. Answer: Only nozzles with a size less than 2
NPS that do not require reinforcement.
⩥ Corrosion Rate Increase. Answer: The expected outcome when raising
the tank temperature, likely doubling the corrosion rate on the bottom-
side.
⩥ Legal Requirements Conflict. Answer: If API 653 conflicts with legal
requirements during tank repair, the most stringent requirements govern.
⩥ RT Discontinuities. Answer: Discontinuities never allowed during
welder qualification with radiographic testing, such as lack of fusion.
⩥ UT Light Intensity. Answer: The minimum light intensity required in
foot candles for performing a PT examination.
