API-577 無料問題集「API Welding Inspection And Metallurgy」

（A）900°F (480°C)

（B）300°F (150°C)

（C）1000°F (540°C)

（D）500°F (260°C)

（A）Preheating is always performed to prevent hot cracking.

（B）A wide face and thinner bevel be used.

（C）The bevel angle be wide enough to allow oscillation of welding torch.

（D）The cooling rate be controlled in order to prevent rapid cooling.

（A）Weld tension tests

（B）There is no single test

（C）Impact testing

（D）Bend testing

（A）The beveled surface of the joint members.

（B）That portion of the groove face adjacent to the joint root.

（C）The surface of a joint member included in the groove.

（D）A separation at the joint root between the work pieces.

（A）Steam out the piping system and dry

（B）Grind the surfaces near the bevel to remove contaminants

（C）Neutralize and clean the surface within 6 in. (150 mm) of weld bevels

（D）Verify with pH paper that any surface liquid is "basic"

（A）24 in.(600 mm)

（B）6 in. (150 mm)

（C）36 in. (900 mm)

（D）12 in. (300 mm)

（A）The inspector should determine whether the weld may be acceptable for the intended service.

（B）The inspector should examine all welds produced by the same welder.

（C）The inspector should seek engineering input on whether the defect is actually acceptable.

（D）They should be corrected before welding proceeds further.

（A）Arc length control

（B）Proper shielding

（C）Reduce travel speed

（D）Lower heat input

（A）Welding procedures must be supported by more than one PQR.

（B）PQRs qualified on P8 materials also qualify for P1 materials.

（C）All PQRs must be qualified with impact testing.

（D）One PQR may support several WPSs.

（A）Shielding must always be provided by an externally supplied gas.

（B）Large volumes of welding fumes are generated.

（C）It has lower deposition rates than SMAW.

（D）It is more sensitive to drafts and wind than GMAW.