ML18283B041

LER 1976-005-00 for Browns Ferry Unit 2, HCU 30-31 Was Found Incapable of Being Scrammed Due to Valves 2-85-612 & 2-85-615 Being in the Closed Position

ML18283B041
Person / Time
Site:	Browns Ferry
Issue date:	07/02/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/RGN-II
References
LER 1976-005-00
Download: ML18283B041 (5)

Text

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V.S. NVCLEAfl fiEOVLATOflVCOMMI ION OOCKET NUMOEB Ii 703 50-260 NBC DISTRIBUTION FGB I'T 50 DOCI(ET MATERIAL FILE NVMREB ~

XNCXDI'.NT REPORT TO: ose ey )RQM: ennesee Va 1 ey Authority DATE OF OOCVMENT Chattanooga," TN. 7-2-76 H.S. Fox OATE BECEIVEO 7-8-76 IjfLETTE R 0 NO TO B I Z E 0 PROP INPUT FORM NUMOFB OF COPIES BECEIVEO 5 0fl IG INA I g UNC LASSIF IE 0 OCOPV 40 DES C B I P T Id N ENCLOSURE Ltr. trans the following......;. Licensee Event Rport (R.O'. k'65) on 6-19-76 Concerning to HCU that was found incapable of t be'ing scrammed.......

( 40 Unsigned Cys. Received)

( 2 Pages)

ACKNOWLKDG<D O ~O>

RZMOVg Browns Ferry 8 1 NOTE: XF PERSONNEL EXPOSURE XS XNVOLVED,.

SEND DXRECTLY TO KREGER/J. COLLXNS SAFETY FOR ACTION/INFORMATION'chwencer ENVXRO i3RANCH CIIIEF:

W 3 CYS FOR ACTXON LXC; ASST: S eppard M/ -CYS ACRS 'YS. / ENT TO .LA INTERNAL 0 IST Rl BUTION NRC PDR X6cE 2 SCHROEDER/XPPOLXTO S ON NOVAK CHECK R HES AS3~

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TEDESCO+HACCA E N i3AER SHAO VOT.LIIF R/ l3 3th'Cii KI<E,rig~Org~NS EXTE lkNAL DISTR IUUTION CONTROL NUMI3ER LPDR: ens, TXC NSIC 6846

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,bile Gg<1 TENNESSEE VALLEY AUTHORlTY CHATTANOOGA. TENNESSEE 37401 O

July 2~ 1976 eo F05'ci>QG Ol Mr. Norman C. Moseley, Director >

U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 230 Peachtree Street, 1W., 8th Floor Atlanta, Georgia 30303

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT UNIT 2-DOCKET NO. 50-260 - FACILITY OPERATING LICENSE DPR-52 - REPORTABLE OCCUREKZCE REPORT BFRO-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 li, August 1975. This event occurred on Browns Ferry Nuclear Plant u~t 2.

Very truly yours, TENNISSEE VALLEY AUTHORITY I'.

S Fox Director of Power Production Enclosure (3)

CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Re atory Commission Washington, D.C. 20555 Director 40 Office of Ins ection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Employer

CA C

CONTROL BLOCK:

lENSEE EVENT REPORT

~

(PLEASE PRINT ALL REOUIREO INFORMATION)

UCENSEE LCENSE EVENT NAME UCENSE NUMBER TYPE TYPE II L B R 2 2 0 0 0 0 0 0 0 0 0 4 1 1 1 1 ~01

~01 7 89 14 15 25 26 30 31'2 REPORT REPORT

~>>

CATEGORY TYPE SOURCE DOCKET NUMBER EVENT OATS REPORT DATE

~01 CON'T 2 ~L 0 5 0 0 2 6 0 0 6 1 9 7 6 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION

[oO~J HCU 30-31 was found. incapable of being scrammed. due to valves 2-85-612 and 7 8 9 80

[oO~] 2-85-615 being in the closed. position. Interim Technical Specification 4.3.C 7 89 80 toOj4 re uires valves 2-8 -612 and. 2-85-615 for each HcU to be open at all times.

7 8 9 80 Qpg (BFRO-50-260/765 )

7 8 9 80 Jag 7 8 9 PAME 80 SYSTEM CAUSE COMPONENT COMPONENT CODE CODE COMPONENT CODE SUPPUER MANIJFACTUAEA VCLATCN

~RB ~A 0 R D R U E ~R G 0 8 0 ~Y

[oDT]

7 8 9 10 11 12 17 43 44 47 48 CAUSE DESCRIPTION

[oO~] Incorrect verification of required. valve position caused by personnel 7 8 9 80 toOI error.

7 8 9 80

~10 7 89 FACILITY METHOD OF 80 STATUS 56 'POWEA OTHEA STATUS DISCOVERY DISCOVERY DESCRIPTION I111 ~z ~oo o m 7 8 9 FORM OF 10 12 13 ~ 44 45 46 80 ACTIVITY. COATENT RELEASEO OF RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE Qjg Z Z NA 7 8 9 10 11 44 45 80 PERSONNEL EXPOSURES NUMBER TYPE DESCRIPTION

~pa ~00 0 2 RA 7 89 11 12 13 80 PERSONNEL INJURIES NUMBER OESCAIPTION

~oo o m 7 89 11 12 80 OFFSITE CONSEQUENCES NA Q~g 7 89 80 LOSS OR DAMAGE TO FACILITY TYPE DESCRIPTION Z NK 7 89 10 80 PUBLICITY NA.

7 89 80 ADDITIONAL FACTORS Q1g NA 7 89 80 7 89 80 NAME: PHONE:

SRO IIBI-eeT