최신 API-577 무료덤프 - API Welding Inspection And Metallurgy

A. The thickness of the metal.

B. The properties of the base metal.

C. The heat input during welding.

D. The residual hardness of the weld joint.

A. 500°F (260°C)

B. 1000°F (540°C)

C. 900°F (480°C)

D. 300°F (150°C)

A. ET

B. MT

C. RT

D. UT

A. Coating characteristics.

B. Chemical composition.

C. Welding position.

D. Strength of the filler metal.

A. An irregular darker density near the center of the width of the weld image along the edge of the root pass image.

B. A lighter density in the center of the width of the weld image, either extended along the weld or in isolated circular drops.

C. A localized darker density with fuzzy edges in the center of the width of the weld image.

D. An abrupt density change across the width of the weld image with a straight longitudinal darker density line at the center of the width of the weld image along the edge of the density change.

A. Should not be used for jobs requiring low-hydrogen electrodes.

B. Should be discarded.

C. Should be placed in a warming oven only if they are low-hydrogen.

D. Should be used at a higher amperage than recommended by the manufacturer.

A. Electrodes should never be stored in an oven that is used for food storage.

B. Low-hydrogen electrodes may be stored in ovens with cellulose-based electrodes, but must be in their original, unopened containers.

C. Electrode ovens should be heated by any means, but must have automatic heat controls and visible temperature indicators.

D. Low-hydrogen electrodes should never be stored with stainless-steel electrodes.

A. Establishing the depth that the radiation source penetrates

B. Marking the radiographs with a definite identifying characteristic

C. Determining that the required sensitivity of the radiograph is achieved

D. Ascertaining how much radiation the source has penetrated the material

A. Impact testing

B. Weld tension tests

C. Bend testing

D. There is no single test

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.