This report, part 1, covers the first phase of a three phase HSE-funded study into the structural design basis determination for Totally Enclosed Motor Propelled Survival Craft (TEMPSC). Part 2 addresses Design Events and Failure Capabilities, Part 3: Event Levels and Safety Margins. Emphasis is placed on typical TEMPSC that are currently in-service in the UK Sector of the North Sea. In this study, a generic TEMPSC has been defined as a 50-man, Glass-fibre Reinforced Plastic (GRP), side-on davit-launched craft, stationed on a fixed steel platform. Such a craft would be typical of lifeboats installed in the early to mid 1980's and therefore designed and manufactured in accordance with the pre-1986 amendments to the 1974 Safety of Life at Sea (SOLAS) regulations.
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