ML113180234
| ML113180234 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/10/2011 |
| From: | Jesse M Exelon Generation Co, Exelon Nuclear |
| To: | Office of Nuclear Reactor Regulation, Document Control Desk |
| References | |
| TAC ME6356, TAC ME6357 | |
| Download: ML113180234 (4) | |
Text
10 CFR 50.90 November 10, 2011 u.s. Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 NRC Docket Nos. 50-277 and 50-278
Subject:
Response to Request for Additional Information Concerning the License Amendment Request Associated with the Reactivity Anomalies Surveillance
References:
1)
Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S.
Nuclear Regulatory Commission, IlLicense Amendment Request -
Reactivity Anomalies Surveillance, II dated June 2, 2011
- 2) Letter from J. D. Hughey (U.S. Nuclear Regulatory Commission) to M.
J. Pacilio (Exelon Generation Company, LLC), IIPeach Bottom Atomic Power Station, Units 2 and 3 - Request for Additional Information Regarding License Amendment Request for Reactivity Anomalies Surveillance Requirement (TAC NOS. ME6356 and ME6357),1I dated November 9, 2011 In the Reference 1 letter, Exelon Generation Company, LLC (Exelon) requested a proposed change to modify the Technical Specifications (TSs) concerning a change to the method of calculating core reactivity for the purpose of performing the reactivity anomaly surveillance at Peach Bottom Atomic Power Station, Units 2 and 3.
U.S. Nuclear Regulatory Commission License Amendment Request Reactivity Anomalies Surveillance November 10, 2011 Page 2 In the Reference 2 letter, the U.S. Nuclear Regulatory Commission requested additional information. Attached is our response to this request.
Should you have any questions concerning this letter, please contact Tom Loomis at (610) 765-5510.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 10 th day of November 2011.
Respectfully, ichael D. Jesse Director, Licensing Re atory Affairs Exelon Generation Company, LLC : Response to Request for Additional Information cc:
USNRC Region I, Regional Administrator USNRC Senior Resident Inspector, PBAPS USNRC Project Manager, PBAPS R. R. Janati, Commonwealth of Pennsylvania
ATTACHMENT 1 Response to Request for Additional Information
Response to Request for Additional Information License Amendment Request Associated with the Reactivity Anomalies Surveillance Question:
Page 1 of 1
RAI-01
It is implied (but not directly stated) in the licensee's amendment request that PANAC11 is the 3D core simulator code currently used in the determination of the predicted core k eff value. The k eff 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.
Response
PANAC11 calculates the core keffective (keff) value. The keff value is used to generate the predicted reactivity anomaly curves.