API 570 practice test 2022 with complete solution In severe refinery services which type of pipe is normally used? Correct answer- seamless Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? Correct answer- longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service. Correct answer- 10% for welded pipe, the normal thickness of under-tolerance is? Correct answer- .010 or 10 mils when qualifying a weld procedure the esential variables must: Correct answer- be recorded on both the WPS & PQR a pipe has a thickness designation of "40S". what does the "S" mean? Correct answer- stainless steel Generally socket-welded pipe is not used for nominal pipe sizes above: Correct answer-
- inches
A propane piping system should be classified as? Correct answer- Class 1
According to ASME/ANSI B16.5 flanges from plate materials can only be used for:
Correct answer- Blind flanges The corrosiveness of soils can be determined by measuring the soils: Correct answer- Resistivity
Preheat should never be substituted for PWHT if: Correct answer- The PWHT was
designed to prevent environmental cracking During welding, non-esential variables: Correct answer- Must be recorded only on the WPS and must be followed by the welder.
During a hydrotest, all joints should be: Correct answer- left uninsulated
ASME/ANSI B16.5 requires flanges to be: Correct answer- marked with the class rating.
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