ML071090218
| ML071090218 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 05/02/2007 |
| From: | Exelon Generation Co |
| To: | Office of Nuclear Reactor Regulation |
| Sands S,NRR/DORL, 415-3154 | |
| Shared Package | |
| ML071090184 | List: |
| References | |
| TAC MD7434, TAC MD7435 | |
| Download: ML071090218 (6) | |
Text
Exe Iv n,,.
IN u cea. v
Exel no Nuclear UHS Meeting Participants-Exe Darin Benyak - Licensing Director (Acting)
Terry Simpkin - LaSalle Regulatory Assurance Manager Vikram Shah - LaSalle Electrical/l&C Design Manager Alison Mackellar - Licensing Engineer Wes Bowers - Senior Engineer Jerry Voss - Director, Engineering & Technical Support, Excel Services Corporation
UHS Timeline 3/13/06 Exelin Nuclear License Amendment Request submitted to the NRC 6/15/06 Received RAI on UHS 7/13/06 RAI response submitted 8/4/06 Supplemental response submitted 11/3/06 NRC denies LaSalle UHS LAR
'1 Th
L ii 4 sq UHS Timelin4 k^*
u(Iea I e
ea 1/24/07 Exelon response to denial submitted 1/26/07 NRC - Exelon meeting to discuss denial of LAR 3/22/07 NRC uncertainty calculation for UHS 4/5/07 NRC - Exelon meeting to discuss possible regulatory resolution
Exelln.
Nuclear Action Items from 1/26/07 M-ee'.
Nft Exelon Action Items
- 2. Correct the discrepancy in the UFSAR that describes the post accident temperature limit of 102 0F versus the stated License Amendment value of 1040F.
- 3. Verify the level of accuracy of the original thermocouple measurement uncertainty and the basis for it.
- 4. Determine if the NRC approved a graded approach to setpoint methodology for other licensees.
Exel no Nuclear Action Items from 1/26/07 Me Exelon Action Items (continued)
- 5.
Describe the industry standard for a graded approach to setpoint methodology.
- 6.
Describe the TS limit if the uncertainty calculation were done to 2 G.
- Exelkn, Nuclear Action Items from 1/26/07 Mee NRC Action Items
- 1. Review the response to the denial letter in detail including existing regulatory structure with respect to a graded approach to setpoint methodology.
- 2. Clarify the graded approach review for non-LSSS setpoints
- 3. Re-engage the TS branch to evaluate if the TS Bases is the appropriate place to address the situation where 3 of 4 RTDs are out of service.
- 4. Determine if the NRC approved a graded approach to setpoint methodology for other licensees.
Exekn.
Nuclear Open Discussion v/ Review of NRC Uncertainty Calculation v' Regulatory Resolution Pathways Identify Additional Issues with Exelon's Approach Resolve Issues Resubmittal