ML19323C391

LER 80-042/03L-0:on 800416,while Performing High Steam Line Radiation Channel Alignment & Functional Test,Drawer D12-RM-K603B,Model 238X660G3 Was Found Out of Spec.Caused by Instrument Drift.Drawer Recalibr

ML19323C391
Person / Time
Site:	Brunswick
Issue date:	05/07/1980
From:	Tollison A CAROLINA POWER & LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19323C389	List: ML19323C388 ML19323C391
References
LER-80-042-03L, LER-80-42-3L, NUDOCS 8005150458
Download: ML19323C391 (2)

Text

__ ___

v. 3. ruustaan neuvoa a un : summeaa vo NRC FORM 266 LICENSEE EVENT REPORT 8005150 N ao' = ' ~ e e O co~' o' 'oc< i t

i i i i i 9 <' ' ~' o 'v " >

l 1JGl@lb7 CAT 58l@

l foI l 8IN 7 9 lC LICENSEE lB lE CODE lP l1 l@l 0 l 0 l - l 0 lLICENSE I4 15 0 l 0NUYdEH l 010 l- l 0 l 02hl@l26 4 l1LICENSE l1 l1TYPE CON'T

" "' I L @l 01510 l - 101312 l 5 GI 014 il 16 l 810 i@l 0151017 l 810 l@

sgRC ITTTI 68 69 EVENT DATE 74 75 REPQRT DATE 80 7 8 60 61 DOCKET NUYSER EVENT DESCRIPT'ON AND PROBABLE CONSEQUENCES h O 2 l While performing PT 1.1.13P, High Steam Line Radiation Channel Alignment and Func- l tional Test, drawer D12-RM-K603B, model 238X660G3, was found out of specifications. l

, , , , , l The drawer was found to alarm at 4.1 x background and the reportable limit is 1 g ; >3.5 x background. This is a recurring problem with this drawer. This event in l g ,  ; no way affected the health and safety of the public. I l

10171 l

, ,,,,,; Technical Specifications 2.2, 6.9.1.9b l 7 8 9 OE CODE SLBC OE COMPONENT CODE SUSCODE SU E Q7 8 l I l A10 l@ l E l@ W @ l Il Nl S l Tl Rl U l@ l Y l@ [ Z_l 9 11 12 13 18 19 20 @

REVISION

. SEQUENTI AL OCCURRENCE REPORT EVENT YE AR REPORT No. CODE TYPE N O.

LE R RO

@ Nuga; at 18101 1-1 101412l l-l 10l31 Itl l-l 10l 21 22 23 24 26 27 28 29 30 31 32 TA N AC ON ON PL NT 1ET HOURS 22 SB IT FOR 8. SL PLgg seANUFAC RER l33E lgl34Xl@ l Z lg l0 l0 l0 lu l y@ lY l@ IN l@ [g jol8l0l@

3b l36Zl@ 7 40 41 42 43 ** 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

3 ;ogj This instrument was out of specification due to instrument drift. The drawer was l recalibrated and returned to service satisfactorily. l 1

Ii 121 1 I

L' L3_] I 1

mi 7 8 9 80

$A S *. POWER OTHER STATUS iSCO Y DISCOVERY OESCRl8 TION l

I1 15 l l G l@ l 0 l 0 l 0 l@l N/A l l B l@l Periodic Test ACTIVITY CO TENT RELE ASED OF RELE ASE AMOUNT OF ACTIVITY LCCATION OF RELE ASE 1 6 [Z_j Z @ l Z l@l N/A l l N/A l 7 8 9 10 11 44 45 80 PERSONNEL FX80SURES NUMBE R TYPE DESCRIPTION l TTI 101010 l@lz l@l N/A l

' " ' ,ERSONNEL,NJ,o so

~ueeER meni,nON@

N/A l l Tl 810 7 9 l0 lo l@l 11 12 80 LOSS OF OH DAVAGE f 0 FAcitiTV TvrE DE SCHip t roN t 9 N/A l l Z l@l10 80 7 8 9 PUHL 600 t V 1S NRC USE ONLY ,

issuEn L&JellLJ@DENHiPnON l N/A l lllllll;lllllj

1. 9 lu ,

6d 69 80 5 PHONE.

919-457-9521 NAME OF PHEPAHtif t

O o

LER ATTACHMENT - RO No. 1-80-42 Facility: BSEP Unit No. 1 Event Date: April 16, 1980 A GE technical representative was on-site for two days to observe calibration of, and perform troubleshooting on, the main steam line radiation monitors.

He found a weak Zener diode (VR6) in all three drawers checked on Unit No. 2 and recommended that we change out VR6 in all monitors. This was done on Unit No. 2, in a refueling outage, and will be performed on Unit No.1 during its refueling outage scheduled to start later this month. The technical representative also recommended several procedural changes, the most signifi-cant being a "zero" check and adjustment on a weekly basis. These procedures are now being revised, and all monitors will be calibrated using these new Procedures during the 1980 refueling outages.

e e

e e

O

.-