Stress Corrosion Cracking Assessment

Assessment of stress corrosion cracking and environmentally assisted cracking in pressure equipment and piping, including crack characterisation, fracture mechanics evaluation, and fitness-for-service determination.

Stress corrosion cracking represents a significant integrity threat in equipment exposed to specific combinations of material, environment, and stress conditions. TES Canada provides engineering assessment of SCC and other environmentally assisted cracking mechanisms — including chloride SCC, caustic cracking, amine cracking, sulphide stress cracking, and hydrogen-induced cracking — to determine whether cracked components can remain in safe operation.

Assessment follows the crack-like flaw evaluation procedures in API 579-1/ASME FFS-1, supplemented where appropriate by fracture mechanics methods from BS 7910. TES Canada evaluates crack size and orientation, material toughness properties, applied and residual stress conditions, and the environmental factors driving crack initiation and growth. The assessment determines whether identified cracks are within acceptable limits for continued service, require monitoring, or necessitate repair or replacement.

Effective SCC assessment requires understanding both the engineering mechanics and the specific damage mechanism involved. TES Canada combines fracture mechanics analysis with damage mechanism expertise informed by API 571 to ensure that assessment conclusions address not only the current flaw condition but also the potential for further crack growth under continued exposure to the operating environment.

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TES Canada provides practical, engineering-led services for oil & gas, LNG, pipeline, and industrial clients across Canada. Contact us to discuss your specific requirements.