ML20084T852

LERs BFRO-50-259/7627 & BFRO-50-260/7618:on 761208,GE Advised Util That Revised Analyses of Input Errors to ECCS Analyses Is Less than 1%.Plant Operation Unaffected by Input Errors

ML20084T852
Person / Time
Site:	Browns Ferry
Issue date:	12/21/1976
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20084T851	List: ML20084T849 ML20084T852
References
BFRO-50-260-761, LER-BFRO-50-259-762, NUDOCS 8306240206
Download: ML20084T852 (2)

Text

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I* . L ENT. REPORT .

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ETH I We have beeninformed by ceneral Electric Company that the revised analyses show that 7 89 l

@ \ the results of'the p'reviously reported input errors to the ECCS analyses is less than 80 l7 89- l l W! l 1 percent. Based on these results, units 1 and 2 operation has been determined to be 80

'? 99 l b l nnnf?ected by the nreviousiv renorted'innut errors. 80 7 89 l EIsl [_ (BFRO-50-259/7627) . (BFRO-50-260/7618) 60 7 89 mg M ACRRR 90LATCN

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hl We understand that a meetin'a between NRC. General Electric, and the utilities 80 7 89

. Ql involved is being held in Bethesda on December 15, 1976, to further discuss this matterj -

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PHONE:

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/ 2 TENNESSEE VALLEY AUTHORIpY R6o/wa7H?

CH ATTANOOG A. TENNESSEE 37401 gSq be.#

December 21, 1976 l

Mr. Normen C. Moseley, Directer U.S. Nuclear Regulatory Commission Office of Inspectica and Enforcement Region II 230 Peachtree Street, NW., 8th Floor Atlanta, Ceorgia 30303 Deer Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT UNITS 1 AND 2 -

DOCKET NOS. 50-259 AND 50-260 - FACILITY OPERATIN LTf"N"S DPR-33 AND DPR A?

260/76N ORTABLE OCCURRENCE REPORTS BFR0 0-259/76 HAND The enclosed report is to provide details concerning the revised analyses that show the results of the previously reported input errors to the ECCS analyses to be less than 1 percent. Based on these results, units 1 and 2 operation has been determined to be unaffected by the previously reported input errors. This report is submitted in accordance with Browns Ferry Technical Specifications Section 6. This event occurred on Browns Ferry Nuclear P1 mat units 1 and 2.

Very truly yours, TENNESSEE VALLEY AUTHORITY H. S. Fox Director of Power Production -

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Enclosure (3) i CC (Emelosure):

Director (3) l Office of Manage, t Information and Program Control U.S. Huelear Res;ulatory Commission Washieston, D.C, 20555 l Director (40)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Comission Washington, D.C. 20555 l

12Lv1 An Equal Opportunity Employer

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