API-577 試験問題を無料オンラインアクセス

As a result of welding, metals with a high coefficient of thermal expansion are:

• A.Less susceptible to brittle fracture.
• B.More susceptible to distortion during welding.
• C.Less susceptible to cracking during welding.
• D.More susceptible to brittle fracture.

Mechanical tests are required to qualify a welding procedure to document that the properties of the weldment meet which of the following?

• A.The expected load for which the weld will be subject.
• B.The same criteria required for welder qualification.
• C.The minimum established acceptance criteria.
• D.The requirements as established in ASME Section XI.

If a test specimen from a welded coupon should fail during PQR mechanical tests:

• A.The test coupon fails and a new coupon is required.
• B.Three out of four of the required test specimens must pass.
• C.The WPS fails.
• D.Two additional test specimens from the coupon must be tested and pass.

P-numbers are based on which of the following?

• A.Chemical composition of the base metal
• B.Comparable base metal characteristics
• C.Weldability characteristics of base metal
• D.Electrode characteristics

Which source of radiation is normally used for performing field radiography on steel with a 4-in. thickness?

• A.Iridium 192
• B.Cobalt 60
• C.Selenium 75
• D.X-ray machine