ML19207B954

LER 79-048/03L-0:on 790805,while Performing Reactor Bldg Exhaust Vent Monitoring Check,Outboard Supply Damper Would Not Stay Closed.Caused by Maladjustment of Control Switch. Switch Readjusted

ML19207B954
Person / Time
Site:	Brunswick
Issue date:	08/30/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19207B950	List: ML19207B949 ML19207B954
References
LER-79-048-03L-01, LER-79-48-3L-1, NUDOCS 7909060225
Download: ML19207B954 (1)

Text

NRC FORjA 366 U L NULL L AH HE GUL Alue. E. .miy 4 (7*77)

LICENSEE EVENT REPORT CONTROL BLOCK: l l l l l l l (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) 1 0 1 gl r Tz y pl 9 0 0 - l0 0 0 l0 lo -

0 l0 @l2h4 1 1l 1 1 @l$1 L A T $$l@

7 8 9 LICENSE E LOD [ 14 IS LICENSE NUYSL'. 25 LICENSL TYPE J3 CON'T o 1

's/Cl L}@l0l5 3

0 l - 10 13 l 2 l 4 l@l 0 18 l0 l5 l7 l t> l@l0 8l3l0l7l9 g EVENT DESCRIPTION AND PROB A C tS ENCES o 2 l While perforTaing PT 4.1.1, Reactor Building Exhaust Vent Monitoring Check, the out- ]

o 3 l board supp1v damper would not stay closed, with the control switch in the "close" 0 4 l position. I O s l Technical specifications 3.6.5.2, 6.9.1.9b l l0 l6 l l ]

O 7 l l o a I l 7 8 9 80 SYSTE'A C A U E C /, L " f CQYP GAL ([

CCCE CODE SUPCODE LG PONE N T CODE SLH' ODE SUPCODL 7

o 9 8

I s l c l@ W@ lc l@ l 1l nl si Tl RI cl@ I slg l zl@

9 10 11 12 13 18 1J 49 C F O'IE N TI A L OCCt;H HF NCE HEFDHT HIVISION (g n pg LVENT YE AR HEFCH T NO LODE TvFE N r)

H f f'O R T 7 l9 l_l ol 4l 8l l/l l 0l 3 l lLl _l l 0[

21 // 2J 14 so 21 JH 21 30 31 JJ AC TION FUTUHF EFFfCT SHi! T DC%N .,

ATTACuYFNT NPHD 4 PHlYE r.OYP COYPONfNT TAKEN AC TION ON PL AN T VFTHOD H O' H S *- SUPYtTTED F OH '3 SU E4 SUPPLI E H YANUF ACTUREH Ld@l2.J@

13 J4 l 71 @

J 's WO

%

lo lo lo lo I J/ 40 I t: @

41 It:

41 l@ l43^1@ l xl 91 91 91@

44 47

'

CAUSE OESCftlPTION AND CORRECTIVE ACTIONS h i o l The control switch on the RTGB was slightly out of ad justment. The switch was re-12 11 I I adjusted, tested, and returned to service. The automatic isolation on these dampers [

j, j7j l was always functional. This is considered an isolated event and no further action isl

[t [3ll required. j li l41 I i 1 8 9 80 F ACILITY .

P'E THOD OF STATUS  % PG AE H OTHE R ST A TUS 015CosFF4Y DISCOV E R Y DE SCHiP Y10N

• NA i s W@ l0 l 8 l 0 l@l l lBl@lPeriodicTest ACTIVITY LO TENT HE LE ASED OF HE L E A'iE A'AOUN T OF AC TIVI TY LOCA TION OF HE LE ASL i e 8 9 og @ uu@l nA lm i 7 10 IT 44 45 80 PE RSONNtl f NPOSLHES NUY9EH TYPF DF SCHiPTION -

i i l ol o 01@l z @l xA l PEHSONNE L INJus IES C8 't*'O^

Nt1YeFH OFSCH #- =

i a l ol ol 01@l un 'PTION Mm . l 7 8 9 11 17 go LOSS OF OH D AYAGE To F ACIL1YY TYPE DE SCHIPT ION I i l o8l 9Lz1@l _

NA 7 10 go ISSU )E SCHIP TION e 12101Ln/t@lm 7909060AAS I IIIIIIIIIIiili I 8 9 10 08 fd 80 ;;

w .r m r ,,, m , ,, A.C. Tollison,_Jr. ,, - + r

_.919-45Z-9521_ ___ _ _ E