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Polyethylene and PVC Pipelines Material Degradation Testing

Polyethylene and PVC Pipelines Material Degradation Testing

Polyethylene and PVC Pipelines Material Degradation Testing

(OP)
Folks,

We have a number of underground pipelines that are made of high strength polyethylene and PVC. These are in what we call sour gas service, i.e. relatively high content of H2S (up to 4%). Canadian regulations allow usage of plastic pipelines for up to 5% H2S. I am not sure if there is any scientific basis behind that figure. Now we are in the process of abandoning a few plastic lines. We would like to do some material testing to see if any degradation occured. I need some help with what type of testing to go for and any standards in accordance to which such testing shall be done.

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