ML19225D010

LER 79-047/03L-0 on 790617:monitor Tripped & Failed to Restart During Normal Surveillance.Caused by Loose Bracket Inside Photohelic Pressure Gauge.Bracket Adjusted,Tightened & Returned to Normal Operation

ML19225D010
Person / Time
Site:	Brunswick
Issue date:	07/16/1979
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19225D008	List: ML19225D007 ML19225D010
References
LER-79-047-03L, LER-79-47-3L, NUDOCS 7908030498
Download: ML19225D010 (2)

Text

NRC FORM 366 U. S. NUCLEAR REGULATORY COMMISSION (7 77) .i.lCliNSEE EVENT REPORT

..'e@- coNTRot stocx: Ll l!lil(PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) i 0l 0l -l 0] 0l@l 4l 1l 1l 1l 1l@l ll@lN l C l B l E l P l 2 l@[ 0 l0 l- l 0 10 0 lc 1 8 9 LICENSEE CODE 14 15 LICENCE NLMtlER 25 26 LICENSE TY PE JO bi L A T Sd CON'T 5"CE l L l@, 0l 5l 0l -l 0l 3l 2l 4@l 0l 6l 1l 7l 7l 9 @l0 l7 l1 l6 l7 l9 j@

'lo 1 8 EJ 61 00CK ET NUMBER C3 69 EN ENT DATE 74'S REPORT DATE 80 EVENT DESCRIPTION AND PPOB ABLE CONsECUENCES h 10 i: lDuring normal surveillance of the control panels, the operator noticed that the CAC-1l ATH-1259 cunitor had tripped and would not restart. This instrument monitors drywell ia 3'l oxygen and hydrogen.

llo 4l(Technical Specifications 3 . 6 . 6. 4,6 . 9 .1. 9 b) lIo 3'O 6llI 10-I-,OId 80 8 3$57E't C AUS E C A UT E C O'.* *kALVE CCOF COOT SudCCOE C O*.'P'N E *.T CC O E SuecOcE S'Ja;;;El Cl Dl@ l X @ l Z l@ l I l N l S l T l R l U l@

E l@ ]@..iig 8 9 10 11 12 13 18 13 2J (E QUE NTI AL OCCU A at NCE REFOAT REvistCN-LEn EVENTv8 art A8 pOn T Nn COCE TYPE NO@gEg%l7l9l[ _ll0l4l7ljfll0l3ll Llgl0 l_ 23 2'23 24 26 27 29.3 3J>t 32'ACTION syTL 6 E EcssCT Sm:T O n *.

UTAC*>ENT NP AD-s P A f * *E CT **

CC'.'80 N E N T T A K E *.

ACTf 0N oNPLANT P321 w C D HOLA0 U)SLBY!TTED FoA'.1 DUB SUPS t!E R

'ANLFACTUAER l E jgl34Z j@

l Z l@l Z l@l 0l 0l 0l ll Y lgl Y [gl A lgl D l 2 l 8 { 2 lg 3J 35 Ju 31 40 41 42 43 44 47 cause oEscm= Tion ANo coR AtcTivE AcT!cns @

pninspectionfoundthat the low flow lamp would not de-energize even if proper flow

,i olwas present. An energized low flow lamp will trip the unit af ter approximate , 30 l*, , , , [ seconds. A bracket inside the photchelic pressure gauge was found loose. This l7-; l bracket holds a photo transistor which controls a relay to energize or de-energize the ;

i 1.s llow flow la=o.

This brack_et was sd jus ted for proper opera'; ion. tightened.(Con't1 1 8 3 80E 7H00 OF F ACILiTv* PC".E l GTHF A ST A Tf M Dif uCt f Ilv Di

• C O' F il' C f SC A '8 710N g ,*$T & T Z NAll A l@[0cerator Surveillance l2 IslE l@ l 0 7 l 4Jh ACTIVIT Y L ^. N T E *. T AELfz -r0 S' 3 ~ r nr

4. m. , r , , a c 7is ir , t c- 2 ;, q.; c g ri E L E A'.E

,llNA I d h [f_h NA l6 a 3 1 , I-44 4 'i 80 ,- . .m , . v a

?t Of R Feif*Tf % N

[0_10iOj@'Z @l 44 h1bl"!7 NA i ,ys3.. E,5N,4

'l g g g{lgg!bW'** 'g y, ,., ,, l 5 Ob t W 'a ti ed r}1-10 10 10,,$l NA v u u u e a u rg s 3 12-- - --80 LO7 GF OH O AV AGE T O F ACil 'TV T ver p g g u .., T n g a,l7 l2 @lNA 1 e e 2 , ip g'J P L T v P.Pa A (- t GE O'J L v

Exa TmN 9 7908030'/75' I i i i i 1 I i i i i i j i_

33 i i s e 4 8 o 80 ;a 3 to.A. C. To111 son, Jr.

919-457-9521

,,,,,s.,,.a...nenner.nyn

,....LER COLTINUATION -- RO# 2-79-047 Facility: BSEP Unit No. 2 Event Date:

6-17-79..and the -1259 conitor was returned to normal operation. This is considered an isolated event and no further action is required.

~ [2 d. .]

h){-