Severity
Incident
Leak
Uncertain
Ignition
No

Incident Synopsis
During development tests, a gaseous H2 test tank was over pressurized and ruptured. The tank dome was destroyed.

Cause
The pressure relief valves were set too high. In addition, the tank was not depressurized while being worked on. Safe distances, as required by the procedures for personnel safety, were not followed.

Incident Date
Dec 31, 1969
Setting
Equipment
  • Hydrogen Storage Equipment
  • Vessel
  • Piping/Fittings/Valves
  • Valve
Damage and Injuries
Contributing Factors
When Incident Discovered
Lessons Learned

Extra caution should be taken when working around elevated pressure storage tanks. Pressure relief valve settings should be checked and then verified by a second party if possible. Proper procedures need to be followed at all times.