Severity
Incident
Was Hydrogen Released?
Yes
Was There Ignition?
Uncertain
Incident Date
Jul 08, 1993
Setting
Equipment
- Hydrogen Storage Equipment
- Vessel
- Piping/Fittings/Valves
- Valve
Damage and Injuries
Probable Cause
Contributing Factors
Characteristics
When Incident Was Discovered
Lessons Learned
Fail-safe position of control valves in supply lines must be set correctly to prevent damage to pressure vessels.
Recommendation
Set all valves for fail safe operation (open or closed) according to needs before installation in pressure or vacuum systems.