0CAN061402, Annual 10 CFR 50.46 Report for Calendar Year 2013 Emergency Core Cooling System Evaluation Changes
| ML14175B275 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 06/24/2014 |
| From: | Pyle S Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 0CAN061402 | |
| Download: ML14175B275 (4) | |
Text
0CAN061402 June 24, 2014 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk 11555 Rockville Pike Rockville, MD 20852
SUBJECT:
Annual 10 CFR 50.46 Report for Calendar Year 2013 Emergency Core Cooling System Evaluation Changes Arkansas Nuclear One - Units 1 and 2 Docket Nos. 50-313 and 50-368 License Nos. DPR-51 and NPF-6
Dear Sir or Madam:
10 CFR 50.46(a)(3)(ii) requires licensees to report annually each change to or error discovered in an acceptable evaluation model or in the application of such model for the emergency core cooling system that affects the peak cladding temperature (PCT). Entergy Operations Inc. has reviewed the small and large break loss-of-coolant accident PCT evaluations for both Arkansas Nuclear One, Units 1 and 2 (ANO-1 and ANO-2). Neither unit had any issues in 2013 that impacted the results reported for the calendar year 2012.
A summary / overview of the information required to be submitted each year is attached to this submittal.
This submittal fulfills the reporting requirements referenced above.
This letter contains no new regulatory commitments.
If you have any questions or require additional information, please contact me.
Sincerely, Original Signed By David B. Bice for Stephenie L. Pyle SLP/rwc Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-4704 Stephenie L. Pyle Manager, Regulatory Assurance Arkansas Nuclear One
0CAN061402 Page 2 of 2
Attachment:
Summary / Overview of Information for Arkansas Nuclear One, Units 1 and 2 10 CFR 50.46 Annual Report for 2013 cc:
Mr. Marc L. Dapas Regional Administrator U. S. Nuclear Regulatory Commission, Region IV 1600 East Lamar Boulevard Arlington, TX 76011-4511 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 U. S. Nuclear Regulatory Commission Attn: Mr. Peter Bamford MS O-8B3 One White Flint North 11555 Rockville Pike Rockville, MD 20852
Attachment to 0CAN061402 Summary / Overview of Information for Arkansas Nuclear One, Units 1 and 2 10 CFR 50.46 Annual Report for 2013
Attachment to 0CAN061402 Page 1 of 1 Summary / Overview of Information for Arkansas Nuclear One, Units 1 and 2 10 CFR 50.46 Annual Report for 2013 Analysis of Record (AOR) Peak Clad Temperature (PCT), (°F)
Evaluation Model (EM)
Used AOR Date Adjustment as of End-of-Year (EOY) 2012, (°F)
Net PCT at the EOY 2012, (°F)
New Adjustments for Calendar Year 2013, (°F)
Net PCT at the EOY 2013, (°F)
ANO-1 Small-Break Loss-of-Coolant Accident (SBLOCA) 1459 RELAP5 / MOD2-B&W December 2010 None 1459 (estimated)
None 1459 (estimated)
Large-Break Loss-of-Coolant Accident (LBLOCA) 2008.1 RELAP5 / MOD2-B&W August 2005 None 2008.1 (estimated)
None 2008.1 (estimated)
ANO-2 SBLOCA 2111 S2M February 2007 None 2111 (analyzed)
None 2111 (analyzed)
LBLOCA 2144 1999 EM February 2007 None 2144 (analyzed)
None 2144 (analyzed)