HIAD Classification of the Physical Effects: Unignited Hydrogen Release

A small hydrogen leak occurred during routine maintenance on an oil refinery unit not in operation.

The release of a blast furnace gas occurred at a section of pipework, due to the rupture of valve seal. The gas did not ignite and the fire service attended as a precaution. The gas was both…

A gaseous tube trailer gone off road in a countryside area and landed on one side. All cylinders were loaded to a pressure of 200 bars. The impact with the ground has caused the rupture of a high…

At 17:30 on 5 may 2019, the pipeline operator was notified by a third party that there was a possible leak on its hydrogen pipeline, as identified by sound. Operator personnel arrived on the site at…

In the collective treatment plant of a chemical platform, the truck tank of 25 m containing hydrochloric acid (HCl) rose in pressure at 11 am; leakage of acid solution and gas evolution occurred in…