Advances in Risk-Informed Application Within ASME Section XI

The ASME Section XI Committees have published three Code Cases that support an alternative in using Risk-Informed application in the selection of piping welds (Category B-F, B-J, C-F-1 and C-F-2). The Code Cases (N-560, N-577, and N-578) have been revised based on industry feedback to keep them up-to-date. These Code Cases have been widely used and the Westinghouse and EPRI Topical Reports have received the Nuclear Regulatory Commission (NRC) approval. However, the Code Cases themselves still need to be submitted to the NRC on a case-by-case evaluation.