Certified Welder Welding Codes and Standards 3

Question 1

What is the purpose of the AWS D1.5 Bridge Welding Code?

Accepted Answer

Governing structural welds on highway bridges

Answer

AWS D1.5 is the Bridge Welding Code developed with AASHTO to govern structural welds in highway bridge fabrication.

Question 2

According to ASME Section IX, what is a 'supplementary essential variable'?

Accepted Answer

A variable that requires requalification only when impact testing is required

Answer

Supplementary essential variables become essential (requiring requalification) only when the application code requires Charpy impact testing.

Question 3

Under AWS D1.1, what is the maximum allowable undercut for statically loaded structures in a transverse weld?

Accepted Answer

1/32 inch (0.8 mm)

Answer

AWS D1.1 limits undercut to 1/32 inch for welds transverse to the primary stress direction in statically loaded structures.

Question 4

What API standard governs the welding of pipelines and related facilities in the oil and gas industry?

Accepted Answer

API 1104

Answer

API 1104 is the standard for welding of pipelines and related facilities used in the petroleum and natural gas industries.

Question 5

In AWS D1.1, a 'prequalified' WPS means:

Accepted Answer

The procedure meets all listed conditions and does not require a PQR

Answer

Prequalified WPSs meet all conditions specified in AWS D1.1 Clause 3 and are exempt from procedure qualification testing.

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