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

'

- coNTRot stocx:i Ll l  ! l i l e@ (PLE ASE PRINT OR TYPE ALL REQUIRED INFORMATION) 0 lc 1 8 9 lN l CLICENSEE l B l CODE ElPl2 14 l@[ 15 0 l0 l- l 0 10 LICENCE NLMtlER 0l 0l -l 0] 0l@l 4l 1l 25 26 1l 1l 1l@lbi L Al T Sdl@

LICENSE TY PE JO CON'T lo 1 5"CE l L l@, 0l 5l 0l -l 0l 3l 2l 4@l

'

C3 69 0l EN 6lENT1lDATE7l 7l 9 @l0 l7REPORT 74 'S l1 l6 DATE l7 l980j@

8 EJ 61 00CK ET NUMBER EVENT DESCRIPTION AND PPOB ABLE CONsECUENCES h 10 i: lDuring normal surveillance of the control panels, the operator noticed that the CAC- 1 ia 3 l ATH-1259 cunitor had tripped and would not restart. This instrument monitors drywell

'

lo 4 l oxygen and hydrogen. l Io 3 l(Technical Specifications 3 . 6 . 6. 4,6 . 9 .1. 9 b) l

'O 6 l l

10

-

I -

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;;;E

..iig 8

l Cl Dl@ l X @ l Z l@ l I l N l S l T l R l U l@

9 10 11 12 13 18 13 E l@ ]@ 2J (E QUE NTI AL OCCU A at NCE REFOAT REvistCN -

LEn EVENTv8 art A8 pOn T Nn COCE TYPE NO

@gEg% l7l9l [ _l l0l4l7l jfl l0l3l '

l Ll g l0 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 l3JE jgl34Z j@ l35Z l@ lJuZ l@ l 0l 0l 0l 31 l l Y lg 41 l Y [g l A lg l D l 2 l 8 { 2 lg 40 42 43 44 47 cause oEscm= Tion ANo coR AtcTivE AcT!cns @

,i o pninspectionfoundthat the low flow lamp would not de-energize even if proper flow  ;

, , lwas 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 l 7-; 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 80 F ACILiTv g E 7H00 OF ,

$T & T Z

• PC".E l GTHF A ST A Tf M Dif uCt f Ilv Di

• C O' F il' C f SC A '8 710N

• 2 Is lE l@ l 0 7 l 4Jh NA l l A l@[0cerator Surveillance l ACTIVIT Y L ^. N T E *. T S' 3 ~ r nr 4. m. , r , , , a c 7is ir , t c- 2 ;, q.; c g ri E L E A'.E AELfz -r0 l6 I d h [f_h a 3

,- . .m , . v a 1, I-NA 44 l l 4 'i NA 80

?t Of R Feif*Tf %"N i

!7 [0_10iOj@'Z @l NA 44 h1b l

• ' ,

,ys3.. E,5N,4

,

.

'

'l g

,,

g g { lgg!bW g y,

• 1-10 10 10,,$l NA l 5 Ob t W 'a ti ed r }

s 3 12

-

- - --

v u u u e a u rg 80 LO7 GF OH O AV AGE T O F ACil 'TV T ver p g g u .., T n g a, 1

l7e l2 2

@l ,

NA e

P .

Pa A (- t GE O'J L v i

ip g'J s P:Exa L TmN T v9 33 7908030'/75' i I i i i i 1 I i i i i i j i_

a 3 to e4 8 o 80 ;

.a... nenner.nyn .

A. C. To111 son, Jr. ,,,,,s.,,

919-457-9521  ;

,. .

.

.

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){-