ML121320575: Difference between revisions
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| issue date = 05/11/2012 | | issue date = 05/11/2012 | ||
| title = Request for Additional Information, Relief Request RI-07 from ASME Code Requirements for Residual Heat Removal Shell Circumferential and Nozzle to Head Welds, Fourth 4th 10-Year Inservice Inspection Interval | | title = Request for Additional Information, Relief Request RI-07 from ASME Code Requirements for Residual Heat Removal Shell Circumferential and Nozzle to Head Welds, Fourth 4th 10-Year Inservice Inspection Interval | ||
| author name = Wilkins L | | author name = Wilkins L | ||
| author affiliation = NRC/NRR/DORL/LPLIV | | author affiliation = NRC/NRR/DORL/LPLIV | ||
| addressee name = | | addressee name = Mccutchen E | ||
| addressee affiliation = Nebraska Public Power District (NPPD) | | addressee affiliation = Nebraska Public Power District (NPPD) | ||
| docket = 05000298 | | docket = 05000298 | ||
Revision as of 18:30, 28 June 2019
| ML121320575 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 05/11/2012 |
| From: | Lynnea Wilkins Plant Licensing Branch IV |
| To: | Mccutchen E Nebraska Public Power District (NPPD) |
| Wilkins, L E, NRR/DORL/LPL4, 415-1377 | |
| Shared Package | |
| ML121320571 | List: |
| References | |
| TAC ME7875 | |
| Download: ML121320575 (1) | |
Text
REQUEST FOR ADDITIONAL INFORMATION REGARDING COOPER NUCLEAR STATION WELD EXAMINATION RELIEF REQUEST RI-07 (TAC NO. ME7875)
By letter dated January 16, 2012, Nebraska Public Power District (NPPD), the licensee for Cooper Nuclear Station (Cooper) submitted for staff review and approval weld examination relief requests for the Cooper Fourth 10-Year Inservice (ISI) Inspection Interval.
The NRC staff has reviewed the information provided and has determined that additional information is needed in order to complete its review.
- 1. Please describe the materials of construction of RHR-CA-2A and RHR-CB-1A including the base and weld materials.
- 2. Please briefly clarify the difference in technique between the examinations conducted during the previous ISI interval and those conducted during the current interval. In addition, please explain why the coverage percentages differed so much between intervals.
- 3. Please state if alternative beam-angle examinations were attempted. If so, please describe the impact of these alternatives (if any) on coverage.