Reliability of offshore jackets using point estimation

The evaluation of risk associated with offshore jackets can be quantified only by a satisfactory assessment of the reliability of the structure. In this paper a methodology for the computation of the reliability of the jacket against collapse using point estimation technique is presented. A plane truss under wave loads is used as a vehicle to illustrate the calculation of the reliability. Methods for the computation of the reliabilities of damaged and repaired tubular members are then presented. The evaluation of the reliabilities of the damaged and repaired jacket can be used to justify the need for repairs and to estimate the efficacy of repair.