Welding Codes and Standards Flashcards

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

Answer: Governing structural welds on highway bridges

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

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

Answer: A variable that requires requalification only when impact testing is required

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

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

Answer: 1/32 inch (0.8 mm)

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

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

Answer: API 1104

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

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

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

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

Which organization publishes the standard AWS A5.1, covering carbon steel electrodes for SMAW?

Answer: American Welding Society

AWS A5.1 is published by the American Welding Society and classifies carbon steel covered electrodes for shielded metal arc welding.

Under ASME Section IX, the letter 'P' in the P-number system is used to:

Answer: Group base metals with similar welding characteristics

P-numbers group base metals with similar weldability so that qualification on one material covers others in the same group.