CWS Weld Procedure Specifications & Qualification 1 — Questions and Answers
Question 1: What document describes all the essential and nonessential variables required to produce a weld with the necessary properties?
- Welder Performance Qualification Record
- Weld Procedure Specification (WPS) (Correct answer)
- Procedure Qualification Record (PQR)
- Welding Inspection Report
Correct answer: Weld Procedure Specification (WPS)
A Weld Procedure Specification (WPS) is the document that prescribes all variables necessary to produce a weld meeting the required properties.
Question 2: Which document provides the test results used to support and qualify a Weld Procedure Specification?
- WPS
- WPQR
- PQR (Correct answer)
- WQTR
Correct answer: PQR
The Procedure Qualification Record (PQR) documents the actual welding data and test results used to qualify a WPS.
Question 3: Under AWS D1.1, which of the following is considered an essential variable in a WPS?
- Travel speed
- Groove weld backing type
- Base metal P-number change (Correct answer)
- Interpass temperature
Correct answer: Base metal P-number change
A change in base metal P-number grouping is an essential variable requiring requalification of the WPS.
Question 4: A prequalified WPS under AWS D1.1 means the procedure:
- Has been tested and approved by a third-party laboratory
- Does not require a PQR because it meets all code-prescribed conditions (Correct answer)
- Is exempt from all inspection requirements
- Has been previously used on a project without failures
Correct answer: Does not require a PQR because it meets all code-prescribed conditions
A prequalified WPS conforms to all prescribed limitations in the code and does not require a supporting PQR test.
Question 5: What is the primary purpose of a Welder Performance Qualification (WPQ) test?
- To qualify a new welding process for a specific base metal
- To demonstrate that a specific welder can produce sound welds using a qualified procedure (Correct answer)
- To verify that welding equipment meets minimum standards
- To approve a contractor's welding program
Correct answer: To demonstrate that a specific welder can produce sound welds using a qualified procedure
A WPQ test verifies that an individual welder has the skill to produce acceptable welds using a given procedure.
Question 6: When a welder's qualification expires due to inactivity, the typical minimum period of inactivity that causes expiration under AWS standards is:
- 3 months
- 6 months (Correct answer)
- 1 year
- 2 years
Correct answer: 6 months
AWS standards generally require requalification if a welder has not used the process for more than 6 months.
Question 7: Which of the following changes to a WPS would typically be classified as a nonessential variable?
- Changing the filler metal classification
- Changing the base metal thickness beyond qualified range
- Changing the weld position
- Changing the groove design within code limits (Correct answer)
Correct answer: Changing the groove design within code limits
Changing the groove design within code-permitted limits is generally a nonessential variable that does not require requalification.
CWS Weld Procedure Specifications & Qualification 1
What document describes all the essential and nonessential variables required to produce a weld with the necessary properties?