Influence of Hydrogen on Vintage Polyethylene Pipes: Slow Crack Growth Performance and Material Properties

The distribution of hydrogen and how this can be widely achieved plays a significant role in the transition from fossil fuels to clean fuel. Using existing natural gas pipeline network suitable option for countries with extensive infrastructure. This study is aimed at investigating compatibility polyethylene (PE) pipe hydrogen. paper utilises cyclic pennsylvania edge notch test (CPENT) method together material property measurements including melting point, crystallinity, oxidative induction time (OIT) understand impact exposing two different PE resins exposure times. It was found that has noticeable failure, while bulk OIT, point showed little change. A change crystal orientation observed, likely accounts difference failure when exposed