Development process of aging management programs for major SSCs of a PWR plant

A feasibility study for the continued operation of Kori Unit 1, PLiM Phase I, showed more adequacy of continued operation beyond the design life. Recently, a Phase II study was initiated to provide several technical licensing documents by performing additional systematic evaluations on a wider range of components. The objective of this paper is to present the methodology and draft results from life assessment and aging management processes for the Korean PLiM study. In order to explain the program, the following three major topics are summarized for 3 components and 7 commodity groups; 1) technical guidelines to provide evaluation methodology and procedure, 2) key findings in the aging management process of the lead plant and, 3) lessons learned and the works to do. From a technical point of view, the preliminary results give the possibility as a prototypal application. However, at present, further efforts including additional analyses in relation to periodic safety review are being made to assure the safety and reliability of the lead plant beyond the design life