Welding

Welding is the most common technique used to join materials and ensure a sound connection, while NDT (non-destructive testing) is applied to verify that the welded joint has acceptable integrity without any detrimental defects. DNV has in-depth knowledge and experience in designing for welding, selecting welding methods, choosing filler materials, determining welding parameters for the actual weld configuration, and applying the most appropriate NDT methods for inspection. We assist customers in ensuring that welded joints possess adequate integrity to withstand loading and environmental conditions throughout the weld’s design life.

DNV’s testing facilities and competence provide clients with the means to verify that the quality of their respective welded connections meets the requirements specified in recognized international standards or any additional requirements due to specific operating conditions. Our expertise is especially directed towards:

• Development of welding procedures
• Welding procedure qualification testing
• Weldability evaluations
• Welded joints integrity testing and assessment
• Investigation of welding-related problems with solutions
• Selecting the correct NDT techniques and procedures
• Assessment of NDT system performance and reliability (e.g. AUT)
• Validation and qualification of AUT systems in accordance with DNV’s code and standards
• ECAs (engineering critical assessments) and integrity assessment of welds operating in severe sour service or under H₂ pressure environments.