API 570 Practice Test Questions With Verified Solutions

API 570 Practice Test Questions With Verified Solutions In severe refinery services which type of pipe is normally used? seamless Pressure applied inside a pipe creates stress in the pipe wall. These stresses are highest on which weld orientation? longitudinal weld Per B31.3, how much RT is conducted on circumferential welds of a pipe in normal service. 10% for welded pipe, the normal thickness of under-tolerance is? .010 or 10 mils when qualifying a weld procedure the esential variables must: be recorded on both the WPS & PQR a pipe has a thickness designation of "40S". what does the "S" mean? stainless steel Generally socket-welded pipe is not used for nominal pipe sizes above: 2 inches A propane piping system should be classified as? Class 1 According to ASME/ANSI B16.5 flanges from plate materials can only be used for: Blind flanges The corrosiveness of soils can be determined by measuring the soils: Resistivity Preheat should never be substituted for PWHT if: The PWHT was designed to prevent environmental cracking During welding, non-esential variables: Must be recorded only on the WPS and must be followed by the welder. During a hydrotest, all joints should be: left uninsulated ASME/ANSI B16.5 requires flanges to be: marked with the class rating. Graphitization of carbon steels begins to occur when metal temperatures exceed: 800 F During pipe fabrication who has overall responsibility for compliance with the code? owner/user Who has the responsibility to determine the extent of PMI performed? owner/user An inservice process pipe should be classified as Class 1 when the % of H2S exceeds: 3% A welder becomes unqualified when he has not welded using the: Process for 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. 2T A pressure test is always required: whenever