최신 API-577 무료덤프 - API Welding Inspection And Metallurgy

A. The expected load for which the weld will be subject.

B. The same criteria required for welder qualification.

C. The requirements as established in ASME Section XI.

D. The minimum established acceptance criteria.

A. Assure that the welded material has sufficient yield strength to avoid brittle fracture.

B. Assure that the welded material has sufficient ductility to assist brittle fracture.

C. Assure that the welded material has sufficient tensile strength to avoid failure at design loads.

D. Assure that the welded material has sufficient toughness to resist brittle fracture.

A. The weldability of a steel, based on carbon content.

B. The theoretical carbon content of a steel.

C. Whether preheat will be needed.

D. Whether postweld heat treatment (PWHT) will be needed.

A. Welding process used and P-numbers of coupon welded.

B. P-numbers of coupon welded and AWS classification numbers.

C. Welding process used and AWS classification numbers.

D. Electrode-flux class and electrical characteristics.

A. Exothermic decomposition or explosion.

B. Hydrogen released during welding process can initiate hydrogen-assisted cracking.

C. Carbon steel will burn in the presence of chlorine and high heat.

D. Explosion or unstable reaction with the addition of localized heat.

A. Reject them.

B. Accept them if nonessential variable.

C. Re-qualify the WPS.

D. Accept them if the markings are corrected.

A. Weldability aspects of in-service welding.

B. Safety aspects of in-service welding.

C. Technical aspects of hot tapping.

D. WPS/PQR aspects of in-service welding.

A. Arc deflection.

B. Arc drift.

C. Arc strike.

D. Arc blow.

A. Proper shielding

B. Arc length control

C. Reduce travel speed

D. Lower heat input

A. 1150°F (621°C)

B. 1350°F (730°C)

C. 1050°F (556°C)

D. 1250°F (677°C)