ML18283B483

LER 1976-003-03 for Browns Ferry, Unit 3 Eight Alarms Received from July 13 to 31, 1976 from Smoke Detectors in Spreading Room B Due to Sensitivity

ML18283B483
Person / Time
Site:	Browns Ferry
Issue date:	08/11/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/RGN-II
References
LER 1976-003-03
Download: ML18283B483 (6)

Text

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.MAC DISTRII3UTION FoA PART 60 DOCI(ET MATERIAL XNCI DI."O'I'EI'ORT FRONI: onTE or. oocvMENT MR N C MOSELEY TF TVA 5-6-"l CHATTANOOGA'ENN onTE+lEc vEO HS FOX LETTEA 0NOTOAIZEO PAOP INPUT FOAM NVMOEA OF COPIES AECEIVEO QA IOINnL Ucopv VNcl.nSSIF IEo IQ'g sVBF MANS THE FOLLOWING....... LICENSEE EVENT REPORT (BFRO-50-296/763) ON 7-13-76.....REF EIGHT ALARMS WERE RECEIVED FROM 7-13 THRU 7-31 76$ DUE TO INCREASED SENSITXVXTY...............-...

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NAC FOAM 195 (2.76)

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TENNESSEE VALLEY AUTHORITY m CHATTANOOGA. TENNESSEE 37401

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August 11, 1976 oo, + ((X Mr. Norman C. Moseley rector Ot @16~

U.S. Nuclear Regulate Co

~~g8 Nyahlogt Region II V. b~~~~ 'ea 230 Peachtree Street, 8th I Atlanta, Georgia 30303

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT UNIT 3-DOCKET NO. 50-296 - FACILITY OPERATING LICENSE DPR-68 - REPORTABLE REPORT BFRO-50-296/763 'CCURRENCE The enclosed. report is to provide details concerning eight alarms which were received. from July 13, 1976, to July 31, 1976, from smoke detectors in spreading room B due to sensitivity. This report is submitted, in accordance with Appendix E to Regulatory Guide 1.16, Revision II, August 1975. This event occurred. on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY go4~ 4~

H. S. Fox Director of Power Production 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 U.S. Nuclear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Enlp yer

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LfPSEE EVENT REPORT

. CONTROL 8LOCK: [PLEASE PRIIIIT A,LL REOUIRED IM>OTIMATIOIII)

LICENSEE LICENSE EVENT NAME L IC ENSE NUMBF A TYPE TYPE A 1, B R F 3 0 0 0 0 0 0 0 0 0 4 1 1 1 Lopi

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09 14 15 25 26 30 3'I 32 REPORT AEPOAT 7

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CATEGORY 57 58 TYPE g

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SOUfICE 60

~pg 61 DOCKET NUMBEA p

68 69 EVENT DATE 74 75 AEPOAr OATS 80 EVENT DESCRIPTION QoU ~

From Jul 13 1976 to Jul 31 1976 ei ht alarms mere receiv d' 09 CpDs [

in spreading room B~ dne to increased sensitivity .The detectors nv 7 09 80

~04 cleaned or re laced and returned to se 7 0 9 00 7 0 9 pri vIE EIO SYSTEM CAUSE COMPOt<CNT COLIPsV<Eaa CODE CODE COMPONEtiT CODE SUPPLIER MATVUFAC1UfiEft Lour 7" 8 9 10 i~Ah d 11

~IN 12 s T R 17

[JJ 43

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44 47 CAUSE DESCRIPTION

+~is',~j Kidde smoke detectors needed cleanin~or re lacement un~~amemastic J

/ 0 9 00 PQ9 s ra in in ro ress in s read n 7 0 9 00 I

7 89 FACiUTY METHOD OF

&0 STATUS POVVEA OTHER STATUS DISCO PEA Y DISCOVERY OESCA'PTioti Q~g 7 8 9 B LoOJ 10 12 13 44 45 46 Alarm received in control room 00 FOAM OF ACTIVITY CONTENT flELEASFD OF A LEASE AMOUNT OF ACTIVI~ LOCATiON OF RELEASE SJ Y'A LG2

/ 8 9 PERSONNEL EXPOSURES 44'5 NUMBEfl TYPE DESCRIPTION

~s ~oo o 7 89 11 PERSONNEL INJURIES tiUMBER DESCAIPTION 7

CsD4 89

~eo o 11 80 OFFSITE CONSEQUENCES 7 8 9 tin LOSS OR OhtvtAGE TO FACILITY TYPE DFSCAIPTtDN CD 7 09 M 10 NA 00 PUBLICITY Q~pi 7 0 0 V1

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ADDITIONAL F/LCTOR f~J.."j> ~ggcumulation of <oreign material causes increased smoke detector sensitiviCy .

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