Severity
Incident
Was Hydrogen Released?
Yes
Was There Ignition?
Yes
Incident Date
Jan 08, 2007
Equipment
- Pressure Relief Devices
- Burst Disk
- Vehicle & Fueling Systems
- Gaseous Hydrogen Delivery Vehicle
Damage and Injuries
Probable Cause
Contributing Factors
Characteristics
When Incident Was Discovered
Lessons Learned
Verify that all PRDs contain fuse-backed adapters.
Explore elimination of rupture disk PRDs and substitution of spring-style relief valves.
Develop new hydrogen unloading procedure using a written checklist. * Add instrumentation to monitor the high-pressure hydrogen system.
Confirm that temporary offices/facilities are not co-located with hazardous chemical storage sites.
A procedure is now in place that requires a Job Hazard Analysis (JHA) to be done on unloading hydrogen and shared enterprise-wide.
A competent plant employee must be present during all hydrogen unloading activities.