Severity
Incident
Was Hydrogen Released?
Yes
Was There Ignition?
Yes
Incident Date
Aug 01, 1991
Setting
Damage and Injuries
Contributing Factors
Characteristics
When Incident Was Discovered
Lessons Learned
Routine maintenance activities on pressurized hydrogen systems should be conducted per written design specifications. The procedures should provide detailed oversight regarding bolt, nut and fitting replacements or repairs. A formal review process should be required to ensure that the maintenance was performed according to the written specifications, and that the hydrogen system will continue to function as designed until the next scheduled maintenance activity.