05000311/LER-1981-061-03, /03L-0:on 810713,disagreement Between Individual Rod Position Indicators for Rods 1SB2 & 2SB2 & Shutdown Rod Bank Demand Indicators Exceeded Tech Spec.Caused by Failed Operational Amplifiers.Amplifiers Replaced

/03L-0:on 810713,disagreement Between Individual Rod Position Indicators for Rods 1SB2 & 2SB2 & Shutdown Rod Bank Demand Indicators Exceeded Tech Spec.Caused by Failed Operational Amplifiers.Amplifiers Replaced

ML20010C723
Person / Time
Site:	Salem
Issue date:	08/12/1981
From:	Dickey F Public Service Enterprise Group
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20010C719	List: 05000311/LER-1981-061, Forwards LER 81-061/03L-0.Detailed Event Analysis Encl 05000311/LER-1981-061-03, /03L-0:on 810713,disagreement Between Individual Rod Position Indicators for Rods 1SB2 & 2SB2 & Shutdown Rod Bank Demand Indicators Exceeded Tech Spec.Caused by Failed Operational Amplifiers.Amplifiers Replaced
References
LER-81-061-03L-01, LER-81-61-3L-1, NUDOCS 8108200345
Download: ML20010C723 (1)

LER-1981-061, /03L-0:on 810713,disagreement Between Individual Rod Position Indicators for Rods 1SB2 & 2SB2 & Shutdown Rod Bank Demand Indicators Exceeded Tech Spec.Caused by Failed Operational Amplifiers.Amplifiers Replaced

Event date:
Report date:
3111981061R03 - NRC Website

text

_.....

Isac POsIM 366 l_

U. S. NUCLE AR REGULATORY CoMMinich

- n.m ^ '

' LICENSEE EVENT REPORT CONTROL SLOCK:

1; l l -l, I'

- (PLEAst PRINT OR TYPE ALL REQuinED INFO:tMATION)

Dij lti-lJ l S lc [Sf d@is o f o f -l 0 l 0l '0l 0 l 01 - l 01 0 l@as'4l1l111l1l@l

.l lg 4-F.e_e--

uCENsEE COQE is uCENsE NwesER 25 siCENsE TvPE 20 s2 CA3 $,

CON'T [80-I O! '5l Ol-0I Ol 3I II 1 hl017 ll'I3-l 8 llMl 018 l 1l 2 l 8l1 !@

8 41 --

. DOCKET NUMBER e6. 89 EVENT DATE 74 75 REeQRT O ATE 80 j

} EVENT DESCRIPTION AND PMosABLk CONSEQUENCES h l177] l At 0855 and 1042 hours0.0121 days <br />0.289 hours <br />0.00172 weeks <br />3.96481e-4 months <br />, respectively, on July 13, 1981, the control operator noticedj g l that the-indiOldual r<v1 position indicators for rods-ISB2 and 2SB2 were in disagree j l ment with the. shutdown rod bank demand indicators by greater than + 12 steps. The l

O 4 F TTl 1 individual rod position indicators were declared inoperable at said hours,' and actiorg O s l' statement-3.1.3.2.1.a was entered.

___l o 7 l

j Lo L.J l i!

7 8 9 E-

' SYSTEY

CAUSE

CAvsE CovP VALVE CO E CODE SU8 CODE COMPONENT CODE SU8 CODE SUSCO E I

g l R lB lh [h dh l Il Nl Sl Tl Rl Ulh yh W h

.7 8

9 to

'11 82 13 16 19 20 SEQUENTI AL OCCURRENCE REPOR REviSICN LE n -po EVENT YE AR R E PQaT NO, COOE TYPE NC

@,aj,Pg; I 8 l ll 8

l 01 6l1 l lel 10 13 l lLi 1 _I l0 l

._ 21 22-23 24 26 27 28 29 30 31 3?

sIPP MAN A T Rgr K r A

ON ON PLANT M f MOURS 22 sei POR g,

i ygl34Zl@

W@

lZ l@

l0l0l0l0l y g

{ g

{ g lBl0.l4l0lg 23 3b 36 33 40 di 42 43 aa 4'

' ~,

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h lt i o l l Both indicators were inoperable due to failure of the operational amplifiers.

On.

j i i l lSB2 the amplifier board was replaced, and on 2SB2 the operational amplifier was l

4 gl replaced.- Both were recalibrated, tested satisfactorily, and returned to service.

g 1

, 3 l Action statemeit 3.1.3.2.1.a was tcrminated at 1040 and 1243 hours0.0144 days <br />0.345 hours <br />0.00206 weeks <br />4.729615e-4 months <br />, respectively, l

i' i 4 l for ISB2 and 2SB2.

(81-46, 81-47, 81-48, 81-49).

7 e e so F ActuTV METt*00 08 STATUS

'<. PotA E R OTHER STATUS DISCOVE R Y OISCOVERY DESCRIPTION 32 W@ l0 j 0 l3 l@l N/A l

Qgl Operator Observation l

i 5 I

ACTavlTY CO TEh'T OuNT O, AC,~.rv @ l LOC.T,0NO,REuA,E@

REuASi@o OP REuctbl@l wa

!.z.j I

wx J

L i e J

7 8 9 30 11 44 44 g:

L PEpiONNEL EXPO 5uRES NU43ER TYPE DESCPtPTtCP4 39

8. I d 01 01@Ld@l xx I

i

' PERSON ~El',N,uns OEsemiPTiO~@

c Nu..ER E I d Ol al@l xx-l r

ee it 12 so LOSS 08 OR DAMAGE TO FActuTY TYPE

DESCRIPTION

8,.LrJ@l na I

e io

.2 i

I DE CRaPTION M.iSUE[ 6 1

.n.

xx i

111111111!!I15 a

ae

.so se se so ;

NAME OF PREPARER ad MCkey PHONE' i-8108200345 810822-PDR ADOCK 05000311

~ _._PDg g,_,_

sm