WPS, PQR, WPQ & Welder Certification

WPS – Welding Procedure Specification

✅ Meaning:

A Welding Procedure Specification (WPS) is a formal, written document that provides direction to the welder for making production welds in accordance with applicable code requirements. It outlines the essential variables such as:

• Welding process (e.g., SMAW, GTAW, GMAW)
• Base materials
• Filler metals
• Joint design
• Welding positions
• Preheat and post-weld heat treatments
• Welding parameters (current, voltage, speed)

💼 Benefits:

• Ensures uniform welding practices across projects
• Guarantees code compliance (ASME, AWS, ISO, etc.)
• Reduces the risk of weld failure
• Enhances production quality and safety
• Helps in audits and third-party inspections

2️⃣ PQR – Procedure Qualification Record

✅ Meaning:

A Procedure Qualification Record (PQR) is a record of test results obtained by welding a test coupon using a proposed WPS. It includes:

• Actual welding variables used
• Test results (e.g., tensile test, bend test, impact test, etc.)
• Visual and NDT evaluations

The PQR proves that the WPS can produce a sound weld meeting code requirements.

💼 Benefits:

• Provides proof of weld integrity
• Essential for client approval and third-party verification
• Improves project documentation and traceability
• Builds client trust and credibility

3️⃣ WPQ – Welder Performance Qualification

✅ Meaning:

A Welder Performance Qualification (WPQ) is a test to assess the skill of a welder to make a quality weld under specific conditions. It ensures the welder can follow the WPS correctly. The test is usually certified after:

• Visual inspection
• Destructive and/or Non-Destructive Testing (NDT)

WPQ is often issued as a Welder Qualification Certificate.

💼 Benefits:

• Certifies that the welder is qualified and competent
• Improves hiring quality and manpower control
• Mandatory for many regulated industries (oil & gas, marine, pressure vessels, etc.)
• Helps reduce rework and rejections

4️⃣ Welder Qualification – General Concept

✅ Meaning:

Welder Qualification refers to the process of evaluating and certifying a welder’s ability to produce welds that meet specific standards. It’s done in accordance with codes like:

• ASME Section IX
• AWS D1.1
• ISO 9606
• DNV, ABS, LR, IRCLASS for marine and offshore

💼 Profits & Advantages:

• Ensures project success by reducing defects and improving durability
• Facilitates compliance with international codes
• Adds value to the welder’s profile and resume
• Enables companies to bid for high-value and export-oriented projects
• Reduces liability and enhances safety in the workplace

Conclusion:

Investing in WPS, PQR, WPQ, and Welder Qualification is essential for:

• Maintaining high-quality standards
• Ensuring compliance and safety
• Winning client confidence
• Enhancing productivity
• Reducing costs related to failures and repairs

These certifications are not just paperwork—they are strategic tools for business growth, quality assurance, and industry reputation.