Release during transfer of hydrogen

Event

Event ID: 812
Quality: 2
Description: Hydrogen leak occurred during a delivery of hydrogen at an automotive supplier. Rescue deployed a curtain of water and evacuated 82 employees from several companies within a radius of 50 m. The hydrogen installation was then purged. The intervention ended at 4 hours later. The accident was caused by a rupture of a connection element (lyre) between the hydrogen bottle in the delivery truck and the receiving tank.
Event Initiating system: Hydrogen System Initiating Event
Classification of the physical effects: Unignited Hydrogen Release
Nature of the consequences: Leak No Ignition (No additional details provided)
Macro-region: Europe
Country: France
Date: 21/12/2012
Main component involved?: Joint/Connection (Lyre)
How was it involved?: Rupture
Initiating cause: Material Degradation (Generic)
Root causes: Unknown (No additional details provided)
Root CAUSE analysis: A rupture of a connection element between the hydrogen bottle in the delivery truck and the receiving tank

Application: Hydrogen Transport And Distribution
Sub-application: CGH2 tube trailer
Hydrogen supply chain stage: Hydrogen Transfer (No additional details provided)
All components affected: Connection between hydrogen delivery truck and a stationary storage tank
Location type: Open
Operational condition: Normal
Description of the facility/unit/process/substances: DESCRIPTION OF THE FAILED COMPONENT
A lyre is typically a single piece of metal tubing (usually copper or stainless steel) that has been mechanically bent into a loop or "S" shape. In this sense, it differs from a hose, which is a composite flexible tubing, consisting of more layers, and designed to be moved and bent repeatedly.