1CAN039704, Forwards Modified TS Pp Which Limit Revised Svc Period to 31 EFPY W/Same Pressure & Temp Limits as Previously Submitted
| ML20136G480 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 03/10/1997 |
| From: | Mims D ENTERGY OPERATIONS, INC. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML20136G483 | List: |
| References | |
| 1CAN039704, 1CAN39704, NUDOCS 9703180053 | |
| Download: ML20136G480 (2) | |
Text
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-=,r~ENTERGY mmm RescMe. AR 72301 Tcl 50185M000 March 10,1997 1CAN039704 U. S. Nuclear Regulatory Commission Document Control Desk Mail Station PI-137 Washington, DC 20555
Subject:
Arkansas Nuclear One - Unit 1 Docket No. 50-313
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License No. DPR-51 Technical Specification Change To The Reactor Coolant System Pressure And Temperature Curves Gentlemen:
As required by Arkansas Nuclear One-Unit 1 (ANO-1) Technical Specification 3.1.2.8, Entergy Operations submitted revised reactor coolant system pressure temperature limits for a l
service period of 32 effective full power years (EFPY) in correspondence dated November 26, 19% (ICAN119608). Additional information, in response to NRC staff questions, was provided in correspondence dated March 4,1997 (ICAN039703). In this same transmittal, Entergy Operations revised figures 3.1.2-1,3.1.2-2 and 3.1.2-3 to clarify that reactor coolant pressure could be obtained from either loop's hot leg tap.
Based upon feedback from the ANO NRR Project Manager on March 7,- 1997, it is our l
understanding that the NRC technical staff did not totally agree with the methodology Entergy Operations employed to justify 'the 32 EFPY service period.
Based upon their own independent assessment, utilizing the information contained in the Entergy Operations' submittals, the NRC technical staff calculated a revised service period of 31.1 EFPY. To address this difference, the NRR Project Manager requested that Entergy Operations revise our submittal to be conservative with respect to the NRC's calculations. Attached are the modified technical specification pages which limit the revised service period to 31 EFPY with 4
the same pressure and temperature limits as previously submitted. The associated technical specification bases section was modified to note the service period was reduced by one
. effective full power year to be conservative with independent calculations performed by the NRC staff.
i The one effective full power year reduction in the revised service period specified in the L
technical specification is conservative with respect to the technical specification changes i
proposed and did not affect the conclusions in the original no significant hazards considerations submitted with Entergy Operations' letter of November 26,1996.
I Should you have any further question on this issue, please contact my office.
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9703180053 970310 PDR ADOCK 05000313.
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U. S. NRC 1CAN039704
' Page 2 of 2 Very truly yours, bM4 Dwight C. Mims Director, Nuclear Safety DCM/dej Attachments cc:
Mr. Leonard J. Callan Regional Administrator U. S. Nuclear Regulatory Commission Region IV 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011-8064 NRC Senior Resident Inspector Arkansas Nuclear One P.O. Box 310 London, AR 72847 Mr. George Kalman NRR Project Manager Region IV/ANO-1 & 2 U. S. Nuclear Regulatory Commission NRR Mail Stop 13-H-3 One White Flint North 11555 Rockville Pike Rockville, MD 20852 j
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