Procedure Qualification Record (PQR)

The Procedure Qualification Record (PQR) is a formal document that records the results of welding procedure tests. Its primary purpose is to verify that a specific welding process produces welds that meet all required technical standards, ensuring structural integrity and reliability—especially in critical sectors such as oil, gas, and infrastructure.

Key Elements of a PQR:

• Material Type: Specifies both the base material and filler materials involved in the welding process.
• Welding Procedure: Details the type of welding (manual, semi-automatic, or fully automated), the process used, and the number of passes.
• Applied Tests: Includes results from tensile tests, impact tests, bend tests, and relevant nondestructive examinations.
• Test Results: Documents whether the procedure meets or exceeds specified technical criteria.

Importance of the PQR:

• Welding Quality Assurance: Verifies the weld’s ability to endure real-world operating conditions.
• Standards Compliance: Ensures adherence to international codes such as ASME, AWS, or ISO.
• Safety Enhancement: Helps prevent structural failures caused by substandard welding practices.