Burst Tests for High-Pressure Hydrogen Gas Line Pipes

Abstract

Burst tests of line pipes containing high-pressure hydrogen and methane gas were conducted. The pipes tested were X65 ERW pipes with 267mm outer diameter and 6mm wall thickness. Applied pressures were 12 and 15MPa. A 300mm long crack was initiated by a shaped charge. Unstable shear fracture propagated at velocity of approximately 200m/s and then arrested. It was demonstrated that the arrested crack lengths were shorter in the hydrogen gas burst tests than methane gas burst tests. Pressure measurement indicated that decompression wave in hydrogen gas propagated faster than that in methane gas. This is the primary reason to the shorter arrested crack lengths for the hydrogen gas burst tests. The test results are discussed based on numerical analyses of gas decompression behaviors.

Modeling of fluid dynamics interacting with ductile fraction propagation in high pressure pipeline

“…The model's efficiency and accuracy is assessed based on comparisons with experimental data for the rupture of a real pipeline, [20]. In particular, we investigate two experimental cases involving methane and hydrogen.…”

“…The force causing the ductile fracture propagation in pipelines is determined by the residual pressure of the discharge, compressible fluid, acting on the internal wall Fig. 1 The experimental test set up [20]. a Methane gas burst tests; b Hydrogen gas burst tests downstream of the crack tip.…”