2CAN080901, Supplemental to License Amendment Request for Technical Specification Change to Modify RCS Flow Verification
| ML092310298 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 08/17/2009 |
| From: | Walsh K Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 2CAN080901 | |
| Download: ML092310298 (4) | |
Text
2CAN080901 August 17, 2009 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
Supplemental to License Amendment Request Technical Specification Change to Modify RCS Flow Verification Arkansas Nuclear One, Unit 2 Docket No. 50-368 License No. NPF-6
REFERENCE:
- 1. Entergy Letter to NRC dated November 13, 2008, License Amendment Request Technical Specification Change to Modify RCS Flow Verification (2CAN110801)
Dear Sir or Madam:
In Reference 1, Entergy Operations, Inc. (Entergy) proposed a change to the Arkansas Nuclear One, Unit 2 (ANO-2) Technical Specifications (TS). In particular, the change would modify TS 3.3.1.1, Reactor Protective Instrumentation, specifically Table 4.3-1 and associated Notes 7 and 8, to clarify and streamline Reactor Coolant System (RCS) flow verification requirements associated with the Departure from Nucleate Boiling Ratio (DNBR) reactor trip signal. The proposed change allows a more accurate Reactor Coolant Pump (RCP) differential pressure based flow indication, as calculated by the Core Operating Limits Supervisory System (COLSS), to be used as the calibration standard at all surveillance intervals.
During the submittal review process, the Nuclear Regulatory Commission (NRC) requested that the bases of ANO-2 TS 3.2.5 be revised to list the methods that could be used to measure RCS flow. With the approval of the request provided in Reference 1, the potential methods for determining RCS flow would be RCP differential pressure or calorimetric. Entergy commits to revising the basis of TS 3.2.5 within 90 days of the approval of the Reference 1 request.
contains the one new commitment described above.
If you have any questions or require additional information, please contact David Bice at (479) 858-5338.
Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-7721 Kevin T. Walsh Vice President, Operations Arkansas Nuclear One
2CAN080901 Page 2 of 2 I declare under penalty of perjury that the foregoing is true and correct. Executed on August 17, 2009.
Sincerely, Original signed by Kevin T. Walsh KTW/rwc
Attachment:
List of Regulatory Commitments cc:
Mr. Elmo E. Collins Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector Arkansas Nuclear One P. O. Box 310 London, AR 72847 U. S. Nuclear Regulatory Commission Attn: Mr. Kaly Kalyanam MS O-8B1 One White Flint North 11555 Rockville Pike Rockville, MD 20852 Mr. Bernard R. Bevill Arkansas Department of Health Radiation Control Section 4815 West Markham Street Slot #30 Little Rock, AR 72205
Attachment to 2CAN080901 List of Regulatory Commitments
Attachment to 2CAN080901 Page 1 of 1 LIST OF REGULATORY COMMITMENTS The following table identifies those actions committed to by Entergy in this document. Any other statements in this submittal are provided for information purposes and are not considered to be regulatory commitments.
TYPE (Check one)
COMMITMENT ONE-TIME ACTION CONTINUING COMPLIANCE SCHEDULED COMPLETION DATE Revise the bases of ANO-2 TS 3.2.5 to list the methods that could be used to measure RCS flow.
9 Within 90 days of the approval of the request to modify RCS flow verification.