ML18283B455

LER 1976-016-00 for Browns Ferry, Unit 3, False Alarm Was Received from Smoke Detector in Spreading Room B Due to Increased Detector Sensitivity

ML18283B455
Person / Time
Site:	Browns Ferry
Issue date:	11/16/1976
From:	Fox H Tennessee Valley Authority
To:	Moseley N NRC/RGN-II
References
LER 1976-016-00
Download: ML18283B455 (10)

Text

4 4 U.S. NUCLEAR REGULATORY COM !ON DOCKET NUMBER NRC FoRM 196 I2.7B)

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'0 $0- 20k FILE NUMBER NRC DISTRIBUTION FoR PART 50 DOCKET MATERIAL INCIDENT REPORT Tennessee Valley Authority DATE OF DOCUMENT

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Mr Moseley 11-16-76 Chattanooga', Tn H S Fox DATE RECEIVED 11-22-76 Rl LETTE R ONOTORIZED PROP INPUT FORM NUMBER OF COPIES RECEIVED CI ORIGINAL JB UN C LASS I F I E D

%COP Y lcc DESCRIPTION ENCLOSURE Ltr trans the followigg: Licensee Event Report (RO/PBFRO-50-296/7616) on 10-20-76 concerning false alarm received from a smoke detector in spreading room B due to increasedddetector sensitivity...........

ACKNOWLEBGZD O ~0~ +ZlVCQ+E PLANT NAME.. Browns Ferry f13 NOTE: IF PERSONNEL EXPOSURE IS INVOLVED SEND DIRECTLY TO KREGER/J..COLLINS FOR ACTION/INFORMATION 11-22-76 ehf BRANCH CHIEF:

W CYS H)R ACTION LIC .ASST.:

W CYS ACRS/ CYS ~&NG S ~MT INTERNAL D IST RI BUTION

.REG ZIZZ NRC PD ICE 2 MIPC SCHROEDER IPPOLITO HOUSTON NOVAK CHECK GRIMES CASE TEDESCO YACCARY EISENHUT SI9$

VOLLMER BUNCIt KREGER J. COLLINS EXTERNAL DISTRIBUTION CO TROL NUMBER LPDB: c.A a c.

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~ ~ ~ ~ ~ ~ ~ ~ ~ ~ A pV3TtOy es r~ c TENNESSEE VALLEY AUTHOR)TY 0 m CHATTANOOGA. TENNESSEE 3Ã40t

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Nevembee 16, 1976 DQQ/fp Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement

(((P I Region II 230 Peachtree Street, 1%1., 8th Floor Atlanta, Georgia 30303

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY -'ROWNS FERRY'-NUCLEAR PLANT UNIT 3-DOCKET iNO. 50-296 - FACILITY OPERATING LICENSE DPR-68 - REPORTABLE OCCURRENi CE REPORT BFRO-50-296/7616 The enclosed report is to provide details concerning the false alarm that was received from a smoke detector in spreading room B due to increased detector sensitivity. This report is submitted in accordance with Browns Ferry Technical Specifications Section 6. This event occurred on Browses Ferry'uclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY giO 0( OO ~1'~

gqqt H. S. Fox Directox of Power Production us oo XO Enclosure (3) 'ii (p CC (Enclosure):

Director (3)

Office of Management Information and Program Control U.S. Nuclear Regulatory Commission Washington, D.C. 20555 Office bf Inspection and Fnfox'cement

. U.S. Ntn.fear Regulatory Commission Washington, D.C. 20555 An Equal Opportunity Emptoyar

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.LCENSEE EVENT REPORT CONTROL BLOCK: (PLEASE T ALL REOUIRED INFORMATION) 1 I LCENSEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE A L .BIB Fl 3 0 0 l 0IO 0 0 0 0 0 d 1 1 1 1 ~03

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14 15 26 30 31 32 RFPORT REPORT CATEGORY TYPE SOUPCE OOCKET NUMBER EVENT OATE AEPOAT OATE

~01 CONT L ~L 0 5 0 0 2 9 6 1 0 2 0 7 6 7 8 57 58 59 60 61 68 69 74 75 80 EVENT DESCRIPTION 7

Qp I8 9 I A false alarm was received from a smoke detector in spreading room B due to increased 80 foOs detector sensitivity. (BFRO-SO-296/7616 7 8

~04 7 8 ap Jag 7 8 80 Jag 7 8 PRIJIE 80 SYSTEM CAUSE COMPONENT COMPONENT COQE COOE COMPONENT COOE SUPPUER MANUFACTUfsrrI VOLATCN I~AB [ EJ 1 H 3 ~L ~ 1C I 1 2 l 0 7 8 9 10 11 12 17 43 44 47 CAUSE DESCRIPTION

~08 I Eke smoke detector needed cleaning.

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[oag 7 8 80

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'METHOO OF 80 FACsLITY STATUS " 5 POWER OTHER STATUS DISCOVERY OISCOVEAY DESCRIPT:ON

. I~a ~oo 3 NA A Alarm received in control room ~

J 7 8 9 10 12 13 44 45 46 80  !

FORM OF ACTIVITY CONTENT RELEASEO OF RE'ASE AMOUNT OF ACTIVITY LOCATION OF PELEASE L~J A 7 8 9 10 11 44 45 PERSONNEI EXPOSURES NUMBER . TYPE OESCRIPTION

~a ~OO O ~B 'HA 7 8 9 11 12 13 PERSONNEL INJUR!ES s NUMBER OE "CRIPTION

'~oo' 7 8 9 12 OFFSITE CONSEQUENCES EH' 7 8 9 80 LOSS OR DAMAGE TO FACILITY L>~ L~J 7 89 10 90 PUB'CITY

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~pt t The smoke detector was cleaned and returned to normal.

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TZNP4$ SSEE VALLEY AUTHORITY O m CHATTANOOGA. TENNESSEE 37401 1P)6 1916 November 16, 1976 Mr. Norman C. Moseley, Director U.S. Nuclear Regulatory Commission Office of Inspection and Enforcement Region II 230 Peachtree Street, NW., 8th Floor Atlanta, Georgia 30303 I 1

Dear Mr. Moseley:

TENNESSEE VALLEY AUTHORITY - BROWNS FERRY NUCLEAR PLANT'UNIT 3 DOCKET NO. 50-296 FACILITY OPERATING LICENSE DPR-68 - REPORTABLE OCCURRENCE REPORT BFRO-50-296/7616 The enclosed report is to provide details concerning the false alarm that was received from a smoke detector in spreading room B due to increased detector sensitivity. This report is submitted in accordance with Browns Ferry Technical Specifications Section 6. This event occurred on Browns Ferry Nuclear Plant unit 3.

Very truly yours, TENNESSEE VALLEY AUTHORITY

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H.. x 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 Employer

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LICENSEE EVENT REPORT CONTROL BLOCK: (PLEAS NT ALL REQUIRED INFORMATION]

1 I iCEtISEE UCENSE EVENT NAME LICENSE NUMBER TYPE TYPE

[oaf g L B R gl 3'. 0 o I o o o o o o l l l

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7 89 14 15 25 26 30 31 32 REPORT TYPE SOUPCE AEPOAl'ATEGORY DOCKET NUMBEA EVENT DATE REPORT DATE

~01 cnm'T 57 58

. L 59 60 L 0 61 5 0 0 2 9 6 68 69 l 0 2 0 7 6 74 75 80 7 8 I

EVENT OESCRIPTION gg89 ' false alarm was received from a smoke detector in spreading room B due to increased detector sensitivity. (BPRO-50-296/76l6 80 Qpj4 7 8 9 ao g

7 8 9 80 I

7 8 9 PRME 80 SYSTEM CAUSE COMPO!dENT COMPO NEN T CODE CODE COMPONENT CODE GUPPY%A MANUFACTUArA ViOLAT ON t007j! AHAB LEJ KI l 2 0 N 7 8 9 10 11 12 17 43 44 CAUSE OESCRIP ZION

~O S ~1he amoke derecror needed cleaning.

7 8'9 FACILITY METHOD OF STATUS, '

Qqg, I B '~OP I POWER OTHER STATUS NA O!S OVEAY A

DISCOVERY OESCAiPT:ON Alarm received in control room 7 8 9 10 12 13 44 45 46 FOAM OF A T!V!TY CONiENT ilELEASEO RE'ASE AMOUNT OF ACTIVITY LOCAT!ON OF RELEASE

'0 OF E>l LBJ LaJ A L 7 8 9 11 44 45 PERSONNEL EXPOSURES

'i NUMBEA TYPE DESCA!PTION e LTioj ~oo o ~B 'NA 7 8 9 11 12 13 80 PERSONNEL INJUR!ES NLiMQEA DrGCAIPTION

~1Je ~00 7 89 11 12 OFFSITE CONSEQUENCES 0'9 I NA 7 6 9 LOSS OR OAh,"AGE TO FACILITY TBPF OESCA!>>ION 7 89 10 80 PUB'CITY O'OITIONe'iL FACTORS

!<<l I The smoke detector was cleaned and returned to normal.

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