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Technician seriously injured during inspections to test for air pressure leaks inside a pressure test bay.
A workshop foreman and technician were inside a test bay testing for leaks from a 5K choke manifold, the Thermowell 3/4" NPT failed and struck the technician on the leg resulting in a serious injury to the right knee. The technician was struck from a distance of approx. 0.5 metres. Severe corrosion had effected the mechanical integrity of the female thread, when this thread failed the stored energy was released propelling the 3/4" Thermowell at a velocity of 42 metres per second or 94 Mph/151 kph. The main headings for the underlying causes were identified as: Procedural Failure Procedural Ineffectiveness Pressure Bay Facilities




Category:	Second Alerts	Document Type:	Safety
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