minor · other
Pressure Testing Incident at Expo Group 2003
Aug 31, 2003
0
fatalities
0
injured
Sequence of events
Please review the attached incident investigation report relating to an incident that occurred in a workshop when pressure testing was being carried out on a 5K choke manifold TX 54-10.
Please review pressure testing practices on your rig to ensure this risk is appropriately managed.
Pressure testing 5K choke manifold TX 54-10
Choke tested inside GY base well test pressure test bay
Workshop Foreman and Technician inside test bay to inspect for leaks
Thermowell 3/4″ NPT failed (The thermowell is about 9 ins long and weighs approx 1 kg.)
Hit Workshop Technician on his knee from approx 0.5 meters, resulting in serious injury.
Severe corrosion had affected the mechanical integrity of the female thread.
The forces generated by the 5000 psi test pressure overcame the mechanical strength of the corroded thread and caused the thermowell to be ejected.
Speak up before the next one
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