CAIB 2 EXAM REVIEW 2026 COMPLETE
QUESTIONS AND ANSWERS STUDY GUIDE
VERIFIED
⩥ Per B31.3, how much RT is conducted on circumferential welds of a
pipe in normal service? Answer: 10%
⩥ for welded pipe, the normal thickness of under-tolerance is? Answer:
.010 or 10 mils
⩥ The corrosiveness of soils can be determined by measuring the soils:
Answer: Resistivity
⩥ when qualifying a weld procedure the essential variables must:
Answer: be recorded on both the WPS & PQR
⩥ In severe refinery services which type of pipe is normally used?
Answer: seamless pipe
⩥ a pipe has a thickness designation of "40S". what does the "S" mean?
Answer: Stainless steel
,⩥ Generally socket-welded pipe is not used for nominal pipe sizes
above: Answer: 2 inches
⩥ A propane piping system should be classified as? Answer: Class 1
⩥ According to ASME/ANSI B16.5 flanges from plate materials can
only be used for: Answer: Blind flanges
⩥ Preheat should never be substituted for PWHT if: Answer: the PWHT
was used to prevent environmental cracking.
⩥ During welding, non-esential variables: Answer: Must be recorded
only on the WPS and must be followed by the welder.
⩥ During a hydrotest, all joints should be: Answer: left uninsulated
⩥ ASME/ANSI B16.5 requires flanges to be: Answer: marked with the
class rating.
⩥ Graphitization of carbon steels begins to occur when metal
temperatures exceed: Answer: 800°F
⩥ During pipe fabrication who has overall responsibility for compliance
with the code? Answer: The owner/user
, ⩥ Who has the responsibility to determine the extent of PMI (Positive
Material Identification) performed? Answer: The owner/user
⩥ An inservice process pipe should be classified as Class 1 when the %
of H2S exceeds: Answer: 3%
⩥ A welder becomes unqualified when he has not welded in: Answer: 6
months
⩥ A PQR test coupon with a shell thickness of "T" can generally be used
to qualify a wall thickness on the WPS up to. Answer: 2T
⩥ A pressure test is always required: Answer: whenever the authorized
inspector believes one is necessary
⩥ When can radiography not be used to qualify a welder? Answer: when
using the GMAW process with the short circuit mode
⩥ Generally, raised face flanges should have a surface finish of: Answer:
125-250 micro- inches
⩥ During a direct visual exam of a pipe weld, the minimum light
intensity should be: Answer: 100 footcandles
QUESTIONS AND ANSWERS STUDY GUIDE
VERIFIED
⩥ Per B31.3, how much RT is conducted on circumferential welds of a
pipe in normal service? Answer: 10%
⩥ for welded pipe, the normal thickness of under-tolerance is? Answer:
.010 or 10 mils
⩥ The corrosiveness of soils can be determined by measuring the soils:
Answer: Resistivity
⩥ when qualifying a weld procedure the essential variables must:
Answer: be recorded on both the WPS & PQR
⩥ In severe refinery services which type of pipe is normally used?
Answer: seamless pipe
⩥ a pipe has a thickness designation of "40S". what does the "S" mean?
Answer: Stainless steel
,⩥ Generally socket-welded pipe is not used for nominal pipe sizes
above: Answer: 2 inches
⩥ A propane piping system should be classified as? Answer: Class 1
⩥ According to ASME/ANSI B16.5 flanges from plate materials can
only be used for: Answer: Blind flanges
⩥ Preheat should never be substituted for PWHT if: Answer: the PWHT
was used to prevent environmental cracking.
⩥ During welding, non-esential variables: Answer: Must be recorded
only on the WPS and must be followed by the welder.
⩥ During a hydrotest, all joints should be: Answer: left uninsulated
⩥ ASME/ANSI B16.5 requires flanges to be: Answer: marked with the
class rating.
⩥ Graphitization of carbon steels begins to occur when metal
temperatures exceed: Answer: 800°F
⩥ During pipe fabrication who has overall responsibility for compliance
with the code? Answer: The owner/user
, ⩥ Who has the responsibility to determine the extent of PMI (Positive
Material Identification) performed? Answer: The owner/user
⩥ An inservice process pipe should be classified as Class 1 when the %
of H2S exceeds: Answer: 3%
⩥ A welder becomes unqualified when he has not welded in: Answer: 6
months
⩥ A PQR test coupon with a shell thickness of "T" can generally be used
to qualify a wall thickness on the WPS up to. Answer: 2T
⩥ A pressure test is always required: Answer: whenever the authorized
inspector believes one is necessary
⩥ When can radiography not be used to qualify a welder? Answer: when
using the GMAW process with the short circuit mode
⩥ Generally, raised face flanges should have a surface finish of: Answer:
125-250 micro- inches
⩥ During a direct visual exam of a pipe weld, the minimum light
intensity should be: Answer: 100 footcandles
