ML113060208
| ML113060208 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/01/2011 |
| From: | John Hughey Plant Licensing Branch 1 |
| To: | Tom Loomis Exelon Corp |
| Hughey J, NRR/DORL, 301-415-3204 | |
| Shared Package | |
| ml113060164 | List: |
| References | |
| Download: ML113060208 (1) | |
Text
Draft DRAFT REQUEST FOR ADDITIONAL INFORMATION RELATED TO LICENSE AMENDMENT REQUEST FOR TECHNICAL SPECIFICATION CHANGES TO LIMITING CONDITION FOR OPERABILITY 3.1.2, REACTOR ANOMALIES PEACH BOTTOM ATOMIC POWER STATION - UNITS 2 AND 3 DOCKET NO. 50-277 AND 50-278 By letter to the Nuclear Regulatory Commission (NRC) dated June 2, 2011,1 Exelon Generation Company, LLC, (Exelon) submitted a License Amendment Request (LAR) for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The submittal seeks to modify Technical Specification Limiting Condition for Operation 3.1.2, Reactor Anomalies, to allow performance of the surveillance on a comparison of predicted to actual (or monitored) effective core reactivity (Keff). The reactivity anomaly verification is currently determined by a comparison of predicted vs. actual control rod density. The NRC staff has reviewed Exelons submittal and determined that additional information, as described below, is needed to complete the review.
RAI-01
It is implied (but not directly stated) in the licensees amendment request that PANAC11 is the 3D core simulator code currently used in determination of the predicted core k-effective value. The k-effective value is used to generate the predicted reactivity anomaly curves. Please confirm that PANAC11 is the 3D core simulator code currently used to perform this calculation.
1 Agencywide Documents Access and Management System (ADAMS) Accession No. ML111540122.