抄録
HPIS Z109 TR: 20161) which treats the procedure for evaluating the soundness of local metal loss found at the time of inspection based on reliability has been published. Although this TR summarizes the basic concept in applying reliability engineering to the metal loss evaluation, in order to widely utilize this technology, it is necessary to develop a partial safety factor table according to reliability targets for a wide range of the geometry, material, and operation condition of the pressure vessel and pipe to be applied. Therefore, working group was newly constructed in the RBM committee, and a partial safety factor table covering piping and pressure vessels in a wider range was created. In this report, we will summarize its basic principle and concept, propose a method for expressing a partial safety factor table in the standard, and present calculation results of a representative case.
