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Posts Tagged ‘mooring failures’

Timeframe for government and industry actions following the 2005 hurricane season.

  

Optimally, the regulator establishes clear objectives for the operating companies and a schedule for achieving those objectives. This approach was demonstrated with great success following the 2005 hurricane season (Katrina and Rita) when numerous mooring system and other stationkeeping issues were identified.

Minerals Management Service Director Johnnie Burton sent a letter (attachment 1) to industry leaders calling for a face-to-face meeting with Department of the Interior Secretary Gale Norton. The Secretary outlined her concerns and informed offshore operators that there would be no drilling from moored mobile drilling units or jackup rigs during the next hurricane season until the issues identified during Hurricanes Katrina and Rita were addressed.

The collaborative effort that followed was a resounding success (2nd attachment). In addition to addressing station keeping concerns, a comprehensive list of hurricane issues was developed. Industry and government then worked together to assess mitigations and develop new standards and procedures. The essential MODU standards were completed before the 2006 hurricane season, and all of the related concerns were effectively addressed prior to the 2009 hurricane season. Had the government elected to promulgate regulations to address all of these issues, much of this work would have never been completed.

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A Maersk Oil-owned FPSO which was damaged during heavy storms in the North Sea in February will be out of action for another year as it heads for drydock repairs. Upstream

More on the Gryphon Alpha incident.

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Gryphon Alpha FPSO

A BBC report (forwarded by Cheryl Anderson) indicates that 70+ workers were safely evacuated from the Gryphon Alpha Floating Production Storage and Offloading facility in the UK sector of the North Sea. Four of the FPSO’s ten mooring lines failed in 30-foot seas and high winds which allowed the vessel to roll up to 12 degrees.  40 essential personnel remained aboard the facility.

While mooring system failures have been relatively common during hurricanes and other major storms (in the Gulf of Mexico, this problem was addressed through comprehensive MMS-industry programs after the 2005 hurricane season), such failures are much less common at floating production facilities. We await the findings of the UK’s inquiry.

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