Leak Tightness of PVC Fittings with Hydrogen

Kiwa Technology B.V. (2022, March 9).

The study concludes that both PVC-U and PVC-HI pipelines show negligible permeation of hydrogen through pipe wall and rubber sealed socket couplers and good behaviour of angular deflection. As much of the grid has passed or is nearing its 50th anniversary, and the old joints performed as well new joints even after the accelerated ageing, it can be assumed that the Dutch natural gas grid can transport hydrogen safely for many decades.