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Failed chain link - catastrophic failures in mooring system - DEV imca
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Failed chain link – catastrophic failures in mooring system

The Bureau of Ocean Energy Management Regulations & Enforcement (BOEMRE) has published Safety Alert No. 296 (attached) regarding the catastrophic failure of a chain link in a mooring system, which could have put a floating structure at risk.

In the incident, a single point mooring system failed at the tether chain for a free-standing hybrid riser, allowing the buoyancy air can and the free-standing flow line riser to separate. The 440-ton buoyancy air can rose suddenly to the surface while the free standing riser collapsed.

Further information can be found at gomr.boemre.gov/homepg/offshore/safety/safealt/SA_296.pdf

Safety Event

Published: 14 July 2011
Download: IMCA SF 06/11

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