The Norwegian Lifeboat Project

Abstract

Abstract During a full scale test of a freefall lifeboat on a permanent production installation offshore Norway in June 2005, weaknesses in the superstructure was experienced. The lifeboat had been type approved by Norwegian authorities, based on design and testing requirements in international codes. As a result of the discovery, The Norwegian Oil Industry Association - OLF, on behalf of its member companies, initiated a full investigation of all 16 freefall lifeboat types on the Norwegian Continental Shelf (NCS). During a four year programme of investigations, tests and analysis, several weaknesses have been disclosed. The outcome of the Norwegian Lifeboat project (LBP) has lead to proposed remedial actions for existing lifeboats and the development of a new standard for future freefall lifeboats. The project has been carried out in co-operation with unions, lifeboat manufacturers and authorities. It has been a unique life boat review project, and has reduced the risk of a potential evacuation situation offshore. The result applies to design and operation of freefall lifeboats in offshore areas world wide. The reports resulting from the project can mainly be divided into three topical groups; strength of superstructure and hull, impact on the human body from acceleration forces, and positive headway immediately after water entry. As regards existing freefall lifeboats, it has been necessary to reinforce the superstructure of 140 lifeboats and to develop new seats with 5-point seat belts. In certain weather conditions it is recommended to take operational precautions when there is a risk of excessive acceleration forces or a risk that existing boats do not have sufficient positive headway. A new navigational tool has also been developed. The results of the studies and tests carried out have been documented in a number of reports, available on request. Additional project activities, not included in the initial scope, has been to study launching arrangements for evacuation means in general, as well as specific challenges for conventional launchable lifeboats. The main parts of the latter studies have been carried out within a project initiated by, and paid by, the Norwegian Ship owner Association. The results of the studies of the two additional areas, have been documented in separate reports. The main Norwegian offshore unions have made important contributions throughout the project The main project, as well as the part on launching arrangements, and additional studies on launchable lifeboats, has been financed by the oil & gas companies on the NCS.