ML20084U433

LER BFRO-50-260/765:on 760619,hydraulic Control Unit Found Incapable of Being Scrammed Due to Valves 2-85-612 & 2-85-615 Being in Closed Position.Caused by Personnel Error

ML20084U433
Person / Time
Site:	Browns Ferry
Issue date:	07/02/1976
From:	Fox H TENNESSEE VALLEY AUTHORITY
To:	Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML20084U438	List: ML20084U433 ML20084U454
References
LER-BFRO-50-260-765, NUDOCS 8306290043
Download: ML20084U433 (2)

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LICENSEE EVENT REPgT CONTROL BLOCK:l l l l l l l (PLEASE PRINT ALL REQUIREO INFORMATION) 1 6 NAME '

LCENSE NUMBER E YPE Oi l 7 89 AlL lB l R l F l 2]

• 14 l Ol Ol-l0 l0 l 0 l 0 l Ol-l 0l 0 l l4 l 1l1l1l 1l 15 25 26 l0l1l 30 31 32 CATECORY Y So DOCKET NUMBER EVENT OATE REPORT OATE 01 CONT l l*l lT l lLl l 0l 5l 0 l-l0 l2 l6 l0 l l 0l 6l1l 9 l 7l6 l l l l l l l l 7 8 57 58 59 60 61 68 69 74 75 ~80 EVENT DESCRIPTION 35 l HCU 30-31 was found incapable of being scra==ed due to valves 2-85-612 aqd l 7 89 80 SE l 2-85 615 being in the closed position. Interim Technical Specification 4.3.C l 7 89 80 3E I reOuires valves 2 85-612 and 2-85 615 for each HCU to be open at all times. l gg f (BFRO-50-260/765) Bj 7 89 80 UE l l 7 89 pmE 80 E CODE COMPONENT CODE VOLATON gg lRlBl y 7 89 10 lC lR l Dl RlV l El lN l lGl0f8 Ol47 [48 11 12 17 43 44 CAUSE DESCRIPTION gg l Incorrect verification of required valve position caused by personnel l 7 89 80 3E l error. l 7 89 80 DE I l

'sEs* s POWER OTHER STATUS O COVERY OGCOVERY DESCRIPTON 1

J l0lOl0l lIR l {BJ lIR l 7 8 9 10 12 13 s 44 45 46 80 RELESEd OF E ASE AMOUNT OF ACTMTY LOCATON OF RELEASE n

7 8 L2u 9

utl 10 i ra 11 l

44 l ra 45 80 l

PERSONNEL EXPOSURES NUMBER EYPE DESCRIPTON DE I 01010 I LEJ l ta l 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER DESCR:PTON H l olo lo l I ta l 7 89 11 12 80 l OFFSUE CONSEQUENCES H I IR l l 7 89 bO LOSS OR OAMAGE TO FACILITY TYPE DESCRiPTON n L2] Ita 7 89 10 80 l

PUBLICITY H l IR l 7 89 80 ADOITIONAL FACTORS 830629004D 760702 El IR PDR ADOCK 05000260 PDR I 7 89 S 80

[iB 1 1 7 89 80 NAME: PHONE:

PPO 000. nG9

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Il Sh0 h-3 3 goOJTso, (V (V TENNESSEE VALLEY AUTHORITY 5

3, $t CHATTANOOGA. TENNESSEE 374ot try ,,gg, 3 July 2, 1976 Y, NL 12

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Mr. Norman C. Moseley, Director cd bN U.S. Nuclear Regulatory Cor=ission Q kb go k k *.

N $T4 Office of Inspection and Enforcement Region II 13 230 Peachtree Street, NW., 8th Floor j Atlanta, Georgia 30303

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Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANI UNIT 2 -

DOCKET NO. 50-260 - FACILITY OPERATING LICENSE DPR REPORTABLE OCCURRENCEREPORTBFRO-50-260/765 The enclosed report is to provide details concerning HCU 30-31 that was found incapable of being scrammed due to valves 2-85-612 and 2-85-615 being in the closed position and is submitted in accordance with Appendix E to Regulatory Guide 1.16, Revision 1+,

August 1975 This event occurred on Browns Ferry Nuclear Plant unit 2.

Very truly yours, t)

. TENNESSEE VALLEY AUTHORITY H. S. Fox Director of Power Production i

Enclosure (3)

CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission ,

Washington, D.C. 20555 Director (40)

Office of Inspection and Enforcement 6h >

U.S. Nuclear Regulatory Commission Y' Washington, D.C. 20555 GOPY SENT REGION MMe An Equal Opportunity Employer r

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