Ernst van der Stok about PLT and aNPT

With the latest generation of polyethylene grades having a raised resistance to slow crack growth (PE 100-RC), there is a high demand for suitable test methods. Ernst van der Stok of Kiwa presents developments related to two pipe tests for PE 100-RC. The first is the point load test (PLT), for which improvements to the test equipment and the current status of an international study are described. The second is the accelerated notch pipe test (aNPT), for which an eco-friendly version is presented. To minimize the required detergent quantities, the test uses smaller containers for each pipe, rather than a large bath.