Real-life inline inspection of buried PVC push-fit joints

摘要

The type of joint typically used in the Dutch PVC network has two rubber gaskets and connects two pipes. An alternative is the bell and spigot, with a single rubber gasket that is attached to the bell.This system is also used with other materials.The principles discussed in this paper are the same for both jointing techniques and for all pipe materials despite the present work being focused on PVC networks.rnIn this work it is clearly demonstrated that the inspected pipe was sagging under the joints, probably due to improper installation procedure.The burst occurred on a barrel. Near the burst point more extreme joint gaps were detected.