Cause & Consequence
- Failure of vessels or pipework
Incident Location
Any Location Type
Incident Activity
Drilling, workover
Incident Info Source
Change step in safety
Specific Incident Equipment
The brass ball valve was rated to 250 psi and placed in a 3000 psi relief line
Lessons Identified
Equipment pressure ratings - ALL components of the presuure piping system did not meet the maximun pressure rating and therefor failed.System Design - The 'pop off' and bleed off lines were 3" diameter leading into a 2" line which had the potential to create a pressure build up.Material Specification - Brass fittings were not appropriate for this application.
Incident Recommendations
All parts of the piping systems must be suitable for the application
Maintain consistant diameter piping in the relief pressure systems.
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