ML19337A255

LER 80-048/03L-0:on 800807,actuation of HPCI & Reactor Core Isolation Cooling Fire Detectors Did Not Annunciate Alarms on Panel in Control Room.Caused by Dirt on Bell,Reducing Audibility & Bad Bulb.Sys Repaired & Returned to Svc

ML19337A255
Person / Time
Site:	Pilgrim
Issue date:	09/05/1980
From:	Mcloughlin M BOSTON EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19337A249	List: ML19337A248 ML19337A255
References
LER-80-048-03L, LER-80-48-3L, NUDOCS 8009090376
Download: ML19337A255 (1)

Text

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• U. S. NUCLE AR CE2ULATO'.Y COMMisslON (7 77)

'4 t.tCENSEE EVENT REPORT 3 a Q ' , CONTROL BLOCK: l 1

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(PLEASE PRINT OR TYPE ALL REQUIRED INPORMATION) 1 58llg l

10 I l 811 9 l Ml A l COOE LICENSEE P l P l S l 1 l@150 lLICENSE le 0 l -NUMSER l 0 l 0 l 0 l 0 25l 0 26l- l 0UCENSE l 0 l@l TYPE 30 4 l 157 lCAT 1 l 1 l@l L

CON'T 10111 En"c! 60[Ql 0 61l 5 l 01DOCK - 1012 l 9 l 3 @l 018 l 0EVENT l 7DATE l 8 l 0 l@l 075 l 9 REPORT l 0 l 5DATEl 8 l 080l@

7 8 ET NUM8 E R 68 69 74 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

[TlT1 l On August 17, 1980, at approximately 1330 hours0.0154 days <br />0.369 hours <br />0.0022 weeks <br />5.06065e-4 months <br /> while conducting surveillance test l i o i 3, l 8.B.4 entitled, " Smoke and Heat Detection Systems F'.in Process Buildings" actuation l g lof HPCI and RCIC fire detectors did not annunciate their intended alarms on panel l

[7pq l C114 in the control room. A fire watch was immediately established and a Maintenance l

[Tpp l Request issued. At approximately 2015 hours0.0233 days <br />0.56 hours <br />0.00333 weeks <br />7.667075e-4 months <br /> the same day the system was repaired, l l o ; 7 l l tested and returned to service. l I o Ia i l l E CODE SUSC E COMPONENT CODE SU8 Code SU E 7

O 9 8

l Al Blh Wh l A lh l Il Nl Sl Tl Rl Ulh l Ilh l Zlh 9 10 11 12 13 18 19 20

_ SEQUENTIAL OCCURRENCE REPORT REVISION LER EVENT YEAR REPORT NO. CODE TYPE N O.

@sug/ROaE 18 l0 l l-l l 0 14 l a l lei 10,.J_3_J ltI l-l 10 l

_ 21 22 2J 24 26 27 29 30 31 32 K N A O PL NT ME HOURS S8 ITTL 80R 8. SUPPL MANUF CTURER l33 B l@W@ 34 lZl@

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40 42 44 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h )

l i i o l gnvestigation revealed the dirt collecting on the alarm bell reduced its audibility.l gl The alarm was cleaned and returned to normal operation. Additionally, a bad bulb i

, , i ., , l which illuminated on alarms from the RCIC quadrant was replace. l 11 131 I l i1 14 I l' l 7 8 9 80 STA  % PcWER OTHER STATUS DISC Y DISCOVERY DESCRIPTION i s W @ l1l0l0l@l N.A. l lB l@l Routine Testing l A Tl"lTY CO TENT -

RELEASED OP RELEASE AMOUNT OF ACTIVITY LOCATION OF RELEASE 1 6 d h l_Zj@l N.A. l l N.A. l PERSONNEL EXPOS ES NUM8ER TYPE oESCRIPTION 1 7 l0l0l0l@ W @l N.A. l l

PERSONNE L INJU IES NuM-R- oESCR,P1,0Ne~

i, ieii0i0i0l@l N.A. i 7 8 9 11 12 80 LOSS OF OR DAMAGE TO FACILITY TYPE DESCRIPTION 1 9 @lto N.A. l 7- 8 9 80 s'009090 3 76 NRC USE ONLY ,

2 o ,,$U;'@;EL,T,0N l @ N.A. l lllllllllllll$

7 8 9 10 68 69 80 5 M. Thomas McLoushlin - 617-746-7900 R