ML20058E288
| ML20058E288 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 11/01/1990 |
| From: | Quay T Office of Nuclear Reactor Regulation |
| To: | Carns N ENTERGY OPERATIONS, INC. |
| Shared Package | |
| ML20058E292 | List: |
| References | |
| TAC-76460, NUDOCS 9011070111 | |
| Download: ML20058E288 (4) | |
Text
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Docket No. 50-368 Mr. Neil S. Carns i
Vice President, Operations ANO i
Entergy Operations, Inc.
Route 3 Box 137G Russellville, Arkansas 72801
Dear Mr. Carns:
SUBJECT:
DENIAL OF REQUEST TO CHANGE THE TECHNICAL SPECIFICATION RELATED TO CORE PROTECTION CALCULATOR CALIBRATION FOR ARKANSAS NUCLEAR ONE, UNIT 2 (TAC 76460) l By letter dated March 2,1990, Arkansas Power and Light submitted a request to l
changetheTechnicalSpecification(TS)forArkansasNuclearOne, Unit 2 (ANO-2). The proposed change would revise the power calibration requirements for the Linear Power level, Core Protection Calculator (CPC) delta-T power and the CPC nuclear power signals.
In addition a time limit for declaring the channel inoperable would be added to the TS.
In response to the amendment request, a preliminary review was completed and the Federal Register notice was published on May 16, 1990.
A more detailed technical review of the amendment request has been completed.
The staff has determined that the request is not acceptable for a full review, and the amendment is rejected for the following reasons.
From a safety standpoint, although the proposed change may cause the CPCs to have more conservative settings than presently required, the staff does not think it is good operating practice to have no limit on the amount by which the CPC power indications could exceed the calorimetric power. Safe operation dictates a more precise knowledge of true operating conditions at any given time.
In addition, if the proposed change were implemented, the-plant would trip on or before the time it trips with current procedures.
In view of the i
current trend toward eliminating spurious trips, this does not appear to be an F
acceptable proposal.
l The requested change in the TS would eliminate the present requirement to l
adjust the safety system power indications when they are found to be in the conservative direction. This would reduce the fre l-measured power to match the calculated secondary (quency of ad usting the calorimetric power. This change has been requested by two other Combustion Engineering CE) plants; San Onofre and Waterford. The requested change has been rejected for both plants.
The staff believes that this proposal represents a generic change for CE plants with a CPC and should be initiated generically as part of the ongoing TS Improvement Program as an owners group initiative.
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9011070111 901101 DR ADOCK 050 38
4 Mr. Neil S. Carns 2
November 1, 1990 1990 proposed Based on the above, the staff hereby rejects your March 2,f Denial to be modification to the ANO.2 license. A copy of the Notice o published in the Federal Register is enclosed.
~
3incerely, ORIGINAL SIGNED BY:
Theodore R. Quay, Acting Director Project Directorate IV.1 Division of Reactor Projects. III.
IV, Y and Special Projects Office of Nuclear Reactor Regulation
Enclosure:
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- 10/ I/90 OFFICIAL RECORD COPY D94umentName: DENIAL REQUEST TAC 76460 i
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Mr. Neil S. Carns :
Based on the above, the staff hereby rejects your March 2,1990 proposed modification to the ANO-2 license. A copy of the Notice of Denial to be published in the Federal Register is enclosed.
Sincerely,
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l Theodore R. Quay, Acting Director J
Project Directorate IV-1 Division of Reactor Projects - III, IV, Y and Special Projects Office of Nuclear Reactor Regulation Enclosure
- As stated l
cc w/ enclosure:
See next page l
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Mr. Neil S. Carns Entergy Operations, Inc.
Arkansas i;uclear One, Unit 2 cc:
Mr. Donald C. Hintz Executive Vice Prcsident and Chief Operating Of ficer Entergy Operations, Inc.
P. O. Box 31995 Jackson, Mississippi 39E86 Nr. Jerry Ye;%rton Mr. Gerald Muench Director I:uclear Operations Vice President Operations Support Arkansas Nuclear Gre Entergy 0perations, Inc.
Toute 3 Box 137G P. O. Box 31995 Pussellville, Arkansas 71801 Jackson, Mississippi 39EE6 Mr. Nicholcs S. Reynolds Itr. Rcbeit 8. McGehee Winston & Str6wn Wise, Carter, Child & Caraway 1400 L Street, N.W.
P. O. Box 651 Washir.gton, D.C.
20005-3502 Jackson, Mississippi 39105 Mr. Robett B. Borsum Mr. Charles B. Crinkman. Manager Dabcock & Wilcox Washington Nuclear Operations Nuclear Power Generation Division Combustion Engineering, Inc.
1700 Rockville Pike, Suite 525 12300 Twinbrook Parkury, Suite 330 Rockville, Marylend 20852 Rockville, Maryland 20852 Senior Resident inspector Mmiral Kinnaird R. McKee, USN (Ret)
U.S. huclear Regulatory Comission Post Office Box 41 1 Nuclear Plant Road Oxford, Maryland 21054 Fussellville Arkanst.s 71801 Mr. Tom Nickels Regional Administrator, Region IV Arkansas Nuclear One U.S. Nuclear Regulatory Comission Route 3, Eox 137G Office of Executive E1 rector Russellville, Arkansas 72801 for'Cperations C11 Ryan Plaza Drive Suite 1000 Arlington, Texas 70011
,i Honorable Joe W. Phillips l
County Judge of Pope County Pope County Courthouse Pussellville, Arkansas 72801
'!!s. Greta Dicus. L1 rector i
Division of Environmental Health Protection Arkansas Department of Health 4815 West Markam Street Little Pock. Arkansas 72201