Welding Challenges With an aging pipeline infrastructure, the trend toward higher grade steel and increased regulatory oversight, pipeline welding is becoming both more critical and more challenging. Welding high strength materials (X80 and above) increases the risk of hydrogen cracking and the requirements on the mechanical properties of the weld. Consumables commonly used in the past are no longer appropriate. Regulators are becoming more stringent when auditing welding procedure specifications and company operating procedures. DNV has the technical expertise and industry experience to address all of your pipeline welding concerns. Welding Procedures and Qualification DNV can support your welding procedure development and qualification needs from beginning to end. We have experience not only with writing procedures but with on-site qualification. We can provide on-site support and data collection to ensure qualification goes smoothly. DNV can generate all of the documentation necessary to comply with industry standards such as API 1104, CSA Z662, and ASME Section IX. We have experience with many processes including shielded metal arc welding, gas metal arc welding, flux-core arc welding, and gas tungsten arc welding. We also have experience qualifying in-service repair and hot tap welding procedures, low hydrogen procedures, stainless steel procedures, and procedures for high strength material. Regulatory Compliance and Best Practices Welding procedure/qualification documentation and company standard operating procedures are increasingly coming under the scrutiny of regulators. Company manuals can quickly become outdated and inaccurate. DNV actively participates in many of the professional organizations that author pipeline regulations. We have an intimate knowledge of these documents and their intent. DNV can audit welding procedures and operating procedures to ensure they comply with regulations and follow current industry best practices. DNV provides you with the most efficient and comprehensive welding technology services Welding Technology DNV (Columbus) 5777 Frantz Road Dublin, OH 43017 USA 614.761.1214 [email protected] www.dnvcolumbus.com DNV (Houston) 1400 Ravello Katy, TX 77449 USA 281.396.1678 [email protected] DNV Calgary 2340 Pegasus Way, NE, Suite 123 Calgary, AB T2E8M5 Canada 403.250.9041 [email protected]

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DNV can generate all of the documentation necessary to comply with industry standards such as API 1104, CSA Z662, and ASME Section IX. We have experience with many processes including shielded metal arc welding, gas metal arc welding, flux-core arc welding, and gas tungsten arc welding. We also have experience qualifying in-service repair and hot tap welding procedures, low hydrogen procedures, stainless steel procedures, and procedures for high strength material.

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Welding Challenges

With an aging pipeline infrastructure, the trend toward higher grade steel and increased regulatory oversight, pipeline welding is becoming both more critical and more challenging. Welding high strength materials (X80 and above) increases the risk of hydrogen cracking and the requirements on the mechanical properties of the weld. Consumables commonly used in the past are no longer appropriate. Regulators are becoming more stringent when auditing welding procedure specifications and company operating procedures. DNV has the technical expertise and industry experience to address all of your pipeline welding concerns.

Welding Procedures and Qualification

DNV can support your welding procedure development and qualification needs from beginning to end. We have experience not only with writing procedures but with on-site qualification. We can provide on-site support and data collection to ensure qualification goes smoothly.

Regulatory Compliance and Best Practices

Welding procedure/qualification documentation and company standard operating procedures are increasingly coming under the scrutiny of regulators. Company manuals can quickly become outdated and inaccurate. DNV actively participates in many of the professional organizations that author pipeline regulations. We have an intimate knowledge of these documents and their intent. DNV can audit welding procedures and operating procedures to ensure they comply with regulations and follow current industry best practices.

DNV provides you with the most efficient and comprehensive welding technology services

Welding Technology

DNV (Columbus) 5777 Frantz Road Dublin, OH 43017 USA 614.761.1214 [email protected] www.dnvcolumbus.com

DNV (Houston) 1400 Ravello Katy, TX 77449 USA 281.396.1678 [email protected]

DNV Calgary 2340 Pegasus Way, NE, Suite 123 Calgary, AB T2E8M5 Canada 403.250.9041 [email protected]

Welding Technology

Testing and Evaluation

DNV has an extensive laboratory equipped to handle a variety of research projects. Past projects include the evaluation of new welding consumables for in-service pipeline welding, evaluation of both fillet and seam welds made in-service to attach tight-fitting repair sleeves, failure analyses, and developing guidelines for heat-affected-zone hardness limits for in-service welds.

Valuable Services

Consulting

Field work

Welding procedure specifications

Failure analyses

Consumables evaluation

Chemical analyses

Pipeline repair and maintenance

Regulatory compliance

In-Service welding

State-of-the-Art Welding Laboratory Equipment

Welding equipment (SMAW, GMAW, FCAW, GTAW)