Severity
Incident
Was Hydrogen Released?
Yes
Was There Ignition?
Yes
Ignition Source
self ignition
Incident Date
Feb 07, 2009
Setting
Equipment
- Piping/Fittings/Valves
- Valve
- Hand Tools
- Pipe Wrench
Damage and Injuries
Probable Cause
When Incident Was Discovered
Lessons Learned
Follow the rules (e.g., using a torque-amplifying device requires supervisor approval).
Some valves are susceptible to disassembly, with potentially significant consequences, if excessive torque is applied to the handwheel.