Cause & Consequence
- Release of a harmful substance
Any Location Type
Incident Info Source
Heidi Mykland, Shell Exploration &amp; Production
Specific Incident Equipment
fuel hose coupling, fuel hose
The investigation has identified that failure of the coupling was not caused by any mechanical failure. The evidence presented on initial inspection indicates that the swivel had been stripped too far by one of the helideck crew when carrying out weekly strainer checks, resulting in 3 balls being lost. The unit was then incorrectly re-assembled with the locking collar being left in the ‘release position’. A surge in pressure will have caused the coupling to separate resulting in fuel spillage.
Photographic instructions for the correct procedure to carry out the weekly strainer checks to be provided by supplier (Reference PDF).- Check that all the swivel release balls are located in their housing prior to reassembling coupling after the weekly strainer checks.- On assembly, check that the locking ring is engaged and the 3 locking screws are located and tight.