1CAN101004, Withdrawal of License Amendment Request Related to Technical Specification Change Associated with Main Feedwater Isolation Valves
| ML102930345 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 10/20/2010 |
| From: | Berryman B Entergy Operations |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| 1CAN101004 | |
| Download: ML102930345 (2) | |
Text
1CAN101004 October 20, 2010 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555
SUBJECT:
Withdrawal of License Amendment Request Related to Technical Specification Change Associated with Main Feedwater Isolation Valves Arkansas Nuclear One, Unit 1 Docket No. 50-313 License No. DPR-51
REFERENCES:
- 1. Entergy letter dated August 24, 2010, License Amendment Request -
Technical Specification Change Associated with Main Feedwater Isolation Valves (1CAN081001)
- 2. NRC email dated September 20, 2010, Acceptance Review Report -
Arkansas Nuclear One-Unit 1, License Amendment Request dated August 24, 2010 - Request for Supplemental Information to Start the Acceptance Review (TAC No. ME4564)
Dear Sir or Madam:
In Reference 1, Entergy Operations, Inc. (Entergy) proposed a change to the Arkansas Nuclear One, Unit 1 (ANO-1) Technical Specifications (TS). Specifically, the change would remove the common mode failure assumption for certain Main Feedwater (MFW) valves when the valves are inoperable solely due to being placed in the manual mode of operation. In Reference 2, the NRC requested additional information in support of the NRCs acceptance review process. The NRC requested additional information to be submitted within 30 days of the request.
Following further conversations with the NRC, Entergy has decided to withdraw the TS change request at this time. The proposed TS change endeavored to generically resolve the concern of assuming a common mode failure upon any failure of the subject MFW valves. However, the benefit of such a change was only needed to support time periods when the subject valves were placed in the manual mode of operation. In a telephone conversation with members of the NRC Staff on October 7, 2010, the NRC suggested that, if focusing only on the manual operation aspect would resolve Entergys major need, that Entergy consider addressing this need through a TS Bases change. Entergy agreed that addressing only the manual operation aspect was appropriate and this could be accomplished by a change to the associated TS Bases in accordance with 10 CFR 50.59. The call concluded with Entergy intending to review this potential success path and notify the NRC of the result of this assessment.
Entergy Operations, Inc.
1448 S.R. 333 Russellville, AR 72802 Tel 479-858-3110 Brad L. Berryman Acting Vice President - Operations Arkansas Nuclear One
1CAN101004 Page 2 of 2 Following the assessment, Entergy concluded that a TS Bases change focused only on manual operation of the subject valves would be the most appropriate solution to address manual operation of the subject MFW valves. The generic common cause failure aspects of the original request will not be pursued further at this time. Subsequently, Entergy requests the Reference 1 amendment request be withdrawn. Entergy appreciates the time and consideration the NRC has afforded the proposed change.
There are no new commitments in this letter.
If you have any questions or require additional information, please contact Stephenie Pyle at 479-858-4704.
I declare under penalty of perjury that the foregoing is true and correct. Executed on October 20, 2010.
Sincerely, Original signed by Brad L. Berryman BLB/dbb 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