Table of Contents
What is involved in the welding procedure qualification process?
These tests typically include X-Ray examinations, ultrasonic examinations, tensile testing, bend testing and when required impact testing. The WPQR combines all of the information of the WPS and adds the test results to provide a complete document that certifies the welding specification.
How do you prepare WPS and PQR?
Basic Information. Most WPS will be backed on a PQR (Procedure Qualification Record) and this information should always be stated in the WPS. All you need to do is reference the PQR number which will allow any reader of your WPS to trace back to the original qualifying document.
What is the first step in welding procedure qualification?
The typical types of inspection and testing for each sample for Welding Procedure Qualification are: Inspection and Testing for Fillet Welds (Tee Joints) – This involves visual inspection of the completed weld, followed by two macro etches, and one fillet weld break test.
What is welding qualification record?
A record of welding variables used to produce an acceptable test weldment and the results of tests con-ducted on the weldment to qualify a welding procedure specification.
How do you write a welding procedure specification WPS?
Basic Information:
- Name of the company and person who developed it.
- Specification number and date.
- Most WPS will be backed on a PQR (Procedure Qualification Record), you should refer to it in order to make it easy to trace the document back.
- Number and date of the last revision.
- Welding processes and type.
What PQR means?
Procedure Qualification Record
The procedures for creating and testing the sample welds, as well as the final results, are documented on a Procedure Qualification Record, or PQR. In short, a PQR serves as evidence that a given WPS can, in fact, be used to produce an acceptable weld.
Who can approve a Pqr?
Lately, The abbreviation PQR is also recognized when approving a process according to ISO standards. Most, if not all, codes and specifications require approval by the responsible engineer, welding engineer, expert, supervisor, or welding coordinator (definition depending on the applicable code/specification).
What is the main aim of welding procedure qualification in a test to ascertain?
Welding procedure qualification verifies compatibility of materials and techniques able to produce welded components that are in compliance with welding codes and have acceptable mechanical properties.
What is prequalified welding procedures?
Prequalified Welding Procedures (WPS) in Shopfloor Welding procedure specifications (WPS’s) provide detailed instructions to welders making quality controlled welds. Structural steel welds in compliance with AWS D1. 1 or AWS D1.
What is the Welding Procedure Qualification Record (PQR)?
What is the Welding Procedure Qualification Record (PQR)? This article talks about procedure qualification record (PQR) based on requirements of ASME Code Section IX. The purpose of qualifying a WPS is that to indicate joining process proposed for production welding has required mechanical property.
What is the purpose of qualifying a welding process statement (WPS)?
The purpose of qualifying a WPS is that to indicate joining process proposed for production welding has required mechanical property. The WPS is written by knowledgeable person but needs to be tested to ensure the produced weld based on WPS has required mechanical property. When the WPS provided, then a test sample must be prepared and welded.
Which changes to the Procedure Qualification Record (PQR) require recertifications?
All changes to Changes to the procedure qualification record (PQR) require recertifications (including date) by the organization. (d) See the Format of the procedure qualification record (PQR).
What is the testing requirement for fillet welds on plate?
The testing requirement for fillet welds on plate is 5 macro sections only, for Pipe fillet welds 4 macro sections. No fracture test required. This document details the practical application of the Procedure Qualification Record (PQR).