Weld Procedure Specifications & Qualification Flashcards

Who is responsible for ensuring that a WPS is properly prepared and available at the work site?

Answer: The manufacturer or contractor

The manufacturer or contractor is responsible for preparing, qualifying, and making the WPS available at the job site.

In the context of ASME Section IX, the term 'P-Number' is used to:

Answer: Group base metals with similar weldability and properties

P-Numbers in ASME Section IX group base metals by similar composition, weldability, and mechanical properties to reduce the number of qualification tests.

A Welding Procedure Specification must be signed by:

Answer: An authorized representative of the manufacturer or contractor

The WPS must be signed and authorized by a representative of the organization responsible for the welding work.

What test is commonly used to evaluate the mechanical properties of a groove weld during procedure qualification?

Answer: Bend test

Bend tests (face, root, and side bends) are routinely required during groove weld procedure qualification to evaluate ductility and soundness.

Under AWS D1.1, the maximum thickness a welder is qualified to weld is based on:

Answer: The thickness of the test plate used during qualification

Welder qualification thickness limits are determined by the thickness of the test assembly used during the qualification test.

Which position qualifies a welder for the most positions under AWS D1.1 structural welding?

Answer: 6G (inclined pipe)

Passing the 6G inclined pipe test qualifies a welder for all positions because it encompasses the most demanding welding orientation.

When preheat is listed as an essential variable on a WPS, what does changing the minimum preheat temperature require?

Answer: Requalification with a new PQR

If preheat is designated as an essential variable, decreasing it below the qualified minimum requires requalification supported by a new PQR.