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Long term influence of defects in butt fusion joints on PE100 pipes and NDT detection of them

 

Papers # 2016 Berlin

More and more a strong desire is noticeable for Non Destructive Testing (NDT) of welded PEjoints. The objective is to determine the long term performance of plastic piping systems made from PE100.

To assess the impact of “mostly known defects“ on the long term performance of a welding, well-defined flaws have to be “reproducibly” placed into pipe joints which then have to be investigated by both destructive and non-destructive methods. Target is to establish the necessary correlation between flaw size/type measured by non-destructive methods with the long term behavior of the welding measured by destructive methods. Both the method for the quality and quantity wise detection of the defects as well as the appropriate (destructive) testing procedures for the long term behavior have to be chosen carefully in order to enable the realistic and reliable set-up of Fail/Pass criteria for welded PE joints as basis for the qualification of safe and long-lasting PE100 piping systems.

Related keywords : Non Destructive Testing, PE100 piping systems, Butt Fusion joints, Fail / Pass criteria.
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