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RR219 - Design and integrity management of mobile installation moorings

The design of semi-submersible moorings that operate in the UKCS are assessed against Codes which are continually being modified and updated to deal with technological changes. The report reviews and compares current documents put forward by Class and Regulatory Bodies and provides guidance on individual features common to each of the Codes considered. The basic make-up of semi-submersible moorings systems comprises chain and wire. Connecting links come under close scrutiny since many instances of line failure can be attributable to these items of equipment. Inspection and maintenance of mooring systems is costly and balances are sought between inspection time and reliability. Man-made fibre ropes are beginning to be deployed within the industry.

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Updated 2010-03-19