Pipeline integrity management is one of the main development areas in CCPGE. As pointed out by Dr. Duan, CCPGE’s pipeline integrity expert, at the CIPC 2021 (Beijing), that pipeline integrity management should be more than just a fitness-for-service assessment during a pipeline’s operating stage; it is actually a management strategy throughout the pipeline’s service life – from the pipeline’s design, construction to operation.
Pipeline integrity management includes many aspects. Dr. Duan pointed out that pipeline stress /strain based design, girth weld quality and environmental stress cracking are three of the most important aspects to be considered.
Pipe stress /strain based design
Typically, problems such as pipe float and uplift buckling caused by the changing ground conditions and operating conditions, as well as pipe-soil interactions and ratcheting makes stress predictions challenging. These problems can be resolved effectively by improving pipe stress /strain based design.