API 570 BUNDLED EXAMS SET 2026
COMPLETE REVIEW SOLVED QUESTIONS
GRADED A+
⩥ Pressure applied inside a pipe creates stress in the pipe wall. These
stresses are highest on which weld orientation? Answer: longitudinal
weld
⩥ 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
⩥ when qualifying a weld procedure the esential variables must:
Answer: be recorded on both the WPS & PQR
⩥ 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
⩥ The corrosiveness of soils can be determined by measuring the soils:
Answer: Resistivity
⩥ Preheat should never be substituted for PWHT if: Answer: The PWHT
was designed 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: owner/user
COMPLETE REVIEW SOLVED QUESTIONS
GRADED A+
⩥ Pressure applied inside a pipe creates stress in the pipe wall. These
stresses are highest on which weld orientation? Answer: longitudinal
weld
⩥ 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
⩥ when qualifying a weld procedure the esential variables must:
Answer: be recorded on both the WPS & PQR
⩥ 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
⩥ The corrosiveness of soils can be determined by measuring the soils:
Answer: Resistivity
⩥ Preheat should never be substituted for PWHT if: Answer: The PWHT
was designed 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: owner/user
