ASME/BPVC - CASE N-711
N-711 Alternative Examination Coverage Requirements for Examination Category B-F, B-J, C-F-1, C-F-2, and R-A Piping Welds Section XI, Division 1
| Organization: | ASME/BPVC |
| Publication Date: | 1 July 2007 |
| Status: | inactive |
| Page Count: | 14 |
scope:
GENERAL
The examination coverage does not meet Case N-560, N-577, N-578 or Appendix R requirements, as applicable, and one of the following conditions is met.
(a) The inspection location of concern is risk Region 1A per Risk-informed Method A.2
(b) An inspection location selected for examination is based on the most limiting predicted severity of the postulated degradation mechanism. Examples of locations considered to be the most limiting are ones that experience the highest T due to thermal transients and highest temperature for locations in PWR's susceptible to IGSCC.
(c) Selection of an alternative inspection location within the same risk region or category will not improve examination coverage of the volume of primary interest (e.g., other locations have similar structural discontinuities).
2 Method A applies to plants implementing risk-informed inservice inspection programs through the use of Case N-577 and associated revisions or Supplement 1 of Appendix R.
Document History
