Part of #Safety factor requirements for the offshore industry# :
Publishing year : 2009
Conference : HSE International Conference on Oil and Gas Industry
Number of pages : 15
Abstract: The maintenance of structural integrity is a significant consideration in the safety management of offshore installations. Installations operating in the North Sea are primarily made of welded construction and are subject to severe environmental conditions, which cause significant fatigue loads. Thus, offshore installations are designed to resist structural failure from fatigue and extreme loading as well as other failure mechanisms, eg corrosion. Additionally, design to resist failure from accidental loading, such as fire and explosion and boat impact, is recognized as particularly important. The need to maintain safety standards is especially relevant in sites where there is an increasing population of installations that have exceeded their original design life and which subsequently require a reassessment to ensure that structural integrity is maintained throughout its life cycle.
The emphasis on safety highlights the need for appropriate structural integrity assessment procedures and the use of appropriate safety factors. A particularly important development has been the major international effort since 1993 to produce ISO standards for offshore structures. This has entailed the harmonization of relevant national codes and
standards and the development of new procedures, where appropriate, resulting in the derivation of revised safety
factors for offshore structures. The subject of safety factors within the ISO arena and in terms of the general
requirements for offshore structures is addressed in this paper.