ML20010A160

LER 81-041/03L-0:on 810616,control Room Exhaust Damper Failed to Close.Caused by Dust Accumulation on Damper Vanes. Damper Operated Properly When Retested.Preventive Maint Program to Be Developed to Inspect & Clean Vanes

ML20010A160
Person / Time
Site:	Fort Saint Vrain
Issue date:	07/16/1981
From:	Mcbinds I PUBLIC SERVICE CO. OF COLORADO
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
Shared Package
ML20010A156	List: ML20010A155 ML20010A160
References
LER-81-041-03L, LER-81-41-3L, NUDOCS 8108110128
Download: ML20010A160 (1)

Text

U. S. NUCLEAR CEGULATCRY COMMISSION NRCf 0RM p , ,

(7 77)

LICENSEE EVENT REPORT CONT AOL BLOCK: l l l l l l lh 6

(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

IO lil8 I9 cl oLICENSEE 7

f ri s CODE i vl il@l 0 I 01 - 1010LIC1E M01010 14 15 NUMHEH l- 10101@l 25 26 4111112101@l LICENSE TYPE 40 l

S 7 GA T $8 l@

CON'T lol1I 7 8 5VRIE 60 l L @l 0l 5DOCK 61 l 0ETlNUMBER 0 l 0 l 2 l 686 I 697 @lEVENT 016 l 1 l 6 l 8 l 1 @l DATE 14 75 REPORT 0 DATE l 7 l1 l806 l 8 l 1 l@

EVENT DESCRIPTION AND PROBA8LE CONSEQUENCES h l

lol2l l During a fire drill, it was discovered that ene of the Control Room exhaust damoe rs l goi3; l would not close. This is a degraded mode of LCO 4.10.1 and reportable per Fort S t. l lo i4 i l Vrain Technical Specification AC 7.5.2(b)2. No accompanying occurrence. No effect l l o ! ., j l on public health or safety. Similar occurrence RO 78-31. l l

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l 0 IH I I 80 7 s9 COMP-SYSTEM CAUSE CAUSE VALVE CCCE CODE SU8 CODE COVPONENT CODE aV8 CODE SUSCODE lO191 7 8 9 l Al Al@ [XJ@ LxJ@ IV I A It IV It lx l@ It l@ Lo_J @

10 11 12 13 18 39 20 SEQUENTIAL OCCURRENCE REPORT R EVISION EVENTYEAR REPORT NO, CODE TYPE NO.

LER RO

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,,,,, 21 22 23 24 26 27 28 29 30 31 J2 K N A O ONP NT HOURS SS I PCR B. SUP8LI E MANUFACTURER Ltl@LzJ@ lzl@ Izl@ 10101010I IV l@ INl@ l^ l@ IP l0 l1 l4 l@

33 34 lb 36 J/ 40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l o l l The Control Room kitchen and bathroom exhaust datoer was stuck in the ooen position. l Iil1 1 1 The damper hanC' jack was used to f ree and exercise the damper. When retes .d. the 1 ii ; ;, i l damper operated properly. Visual inspection indicated some accumulation of dust on l lii3i l damper vanes. A preventive maintenance orogram is to be develooed to insoect and I ii l4i ] clean the damper vanes. Damper is a parallel type with a pneumatic oiston contromatic l 7 8 9 operator.M OTHER STATUS iS O RY DISCOVERY DESCRtPTION

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@ lol0l0l@l N/A l l A l@l Ooerator Observation l AC'TiviTy C05 TENT AELEASE F RELEASE AMOUNT 08 ACTIVITY LOCATION OF RELEASE N/A I I N/A i l1 1

161L7JdD 4 3 10 Izl@l 11 44 45 80 .

PERSONNEL Ex*CSURES Nuv82R TVPE CtESCRIPTION N/A l l i l 7 l 1 0l O! 0l@lz l@[

PEaSONNE L INJURIES NUV9Eu DESCR1PTICN l li j a l l 0l 0l Gl@l N/A 80 l

l 7 8 9 11 12 LOSS OF CR DAVAGE TO FACILITV Q TYPE DESCRIPTION  %,/

l I1191 i zl@l'o N/A 80 7 *

• 8108110128 810716 NRC USE ONLY

,sSUE PDR ADOCK 05000267 ,

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NAME OF PRERAREl w -

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