ML19325D500

From kanterella
Jump to navigation Jump to search
LER 89-007-00:on 890920,unit Placed in Startup Operating Condition W/Rhr Subsystem B in Shutdown Cooling Mode Rather than LPCI Mode.Caused by Procedure Noncompliance Due to Personnel Error.Individual counseled.W/891020 Ltr
ML19325D500
Person / Time
Site: Limerick Constellation icon.png
Issue date: 10/20/1989
From: Endriss C, Mccormick M
PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
LER-89-007-03, LER-89-7-3, NUDOCS 8910240270
Download: ML19325D500 (5)
v • d • e


Text

'~ - ~ -

~ ~ ' ~ ~ ~ ' - - ' ~

7 .' .

10 CFR 50.73 8

PHILADELPHIA ELECTRIC COMPANY

.\~

LIMERICK GCNER ATING STATICN ,

P. O. BOX A S AN ATOG A, PENNSY LV ANI A 19464 (216) 3171200 axT, 2000 v

l. M. J. M o co n u sc u, 4.., P.s.

u . . . //Z' .".'.O ",,,, . October 20, 1989. -

Docket No. 50-353 4 li. License No. NPF-85 l\ '

U.S. Nuclear Regulatory Commission Attn: Document Control Desk 5

I O shington, DC 20555

SUBJECT:

Licensee Event Report.

Li.norick Generating Station - Unit 2 This LER reports a condition prohibited by Technical i Specifications in that Unit 2 entered the Startup Operating

Refereace: Docket No. 50-353 '

, eport Number: 2-89-007 l, Revision Number: 00 "

Event Date: September 20,1989 >

b Report Date: October 20, 1909 l Facility: Limerick Generating Station- ,

l P.O. Box A, Senatoga, PA 19464 c

This LER is being submitted pursuant. to the requirements of .:

10 CFR 50.73 h)(2)(1)(B).  !

very truly yours, ,

,() Il ,.

N

(/

os

$..4 ,s~

p VAW:ch cc: >W. T. Russell, Administratot, Region I, USNRC T. J. Kenny, USNRC Senior Resident Inspector, LbS 1

J 6

\

( 4Q h.E n%' *cc

  1. sw- .

u

,m , .\ kk N, j s

, y. s

.. . 'g k \

e ., a ,<

%c p = ane v s. muckua ascubatc27 c:an.sssica AP32Cvt3 CWe m3. 2%rtes

. LIGNSEE ENENT REPORT (LER) u*'u s. imics pooir auwena m .

  • 4 4 . ..

, ciury naus m Limerick Generating Station Unit 2 01510 t o I c i, i c;i , 1 lopl n ta

"'" Entry into Startun Ceerating Condition with Fesidual Heat Removal System in "

Shutdown C%11no 3ue to Permnnel wmr

, t aucar catu m I c a.a naciuris. iavosvio isi svi=r o.o: m i ua *vus_sa m woutw; ca, vua vtaa p -"O ',M '.' M::  :- :M.".Tlwcarr cav I vtaa ' ac'urv a*-u ,ccuT=vw aam 015 l 0 l 0 l 0 ; * ; l 0l 9 2l 0 8l9 8 l9 0 l 0l7 O! 0 1l0 2:0 l El 9 0 15 1 0 l 'l ici i i rms asecar is svaanttio evasuant 70 t=e n:viatwemri os to esa p icw. . .. .r . ,,,,.-.i nn uoos m 4 n..am , nam sonmmu.s .

nnini

,e,. . a n.ammm w.w.mi unmmm ru . i.i

~-

",7 0 Oi 0 n.=.mim wamm unun:nm e,.s a e - .

" # ""'"*" x """"*"* ""*"'""" ~E~~'"'~'"'~

p gs 4%hQ , W fs;  ;~. -

n mmuni.e Iwnmmm waamn..wei s.z ,,.x v.=g

p. s  ;:ce s' n.m mn n.. I wn'.u: nan sa nmmi.i l ~~

uci sas ekteet sea t is un nu a.wa - nu..can =wweea l

C.R.Endrias,Paculatorv Encineer,Iherick Generatino Station 2i16 3i2 f7 I- Il p 19 10 6 CCw.stTE ONE tiht ,On E ACM C9w CNINT 8 A3Lunt CE"CaiSID IN TMi$ a t8 Cat ti33 WANY8AC .,,,l :M[E g,' %

CAW 58 Sv$rtw C0w 0%INr

[ g ,.

e e' s< q. gavsg sv 3?gu gew.gnggy ruum ru . a a t.ca ra.e g g yggp

,' f b ' , ?V. :ssa , 74 ;.

l l l l l l l

<' / W3h s" , , , , y , , l l

tj,'ggj:{

- gM**P qgl. m-i l 1 I l i I I l l l , I ( ( ;gy? j l

l _

sv ue.rf an, car amens ii., a m etto

,g,,,, ,,, I ,,,,

Sv4w.ssacm i sec 0*" U SI v11 (19 p.e. s.m.nor. SK9tCTfD 3L'On*IZZlCM Catti a . ...-. , ~, . . . .~ . , ,, . i

. a .c1 m ~ . .

On September 20, 1089, at 1517 hours0.0176 days <br />0.421 hours <br />0.00251 weeks <br />5.772185e-4 months <br /> during the start up of Limerick Generating Station Unit. 2, the Unit was placed in the ,

STARTUP OPERATING CONDITION with tbc 'B' Residual Heat Removal (RHR) aul, system in :the Shutdown Cooling :: node rather than the Low Pressure Coolant Injection (LPCI) mode required by Technical Specifications (TS). The 'B' RHR snbsystem was subsequently aligned in the LPCI mode at 1823 hours0.0211 days <br />0.506 hours <br />0.00301 weeks <br />6.936515e-4 months <br />. The consequences of this event were minimal because the other three RHR subsystems were operable in the LPCI r.. ode. The cause of the event is procedure non-compliance due to personnel error. Also, contributing wac a

~1ack of clarity in the procedure governing plant startup. The personnel involved were counseled and the procedure was revised L to improve its clarity. No similar problems were found in review >

of other operations procedures that have parallel acticn steps. 1

, 3 s

c

. m....,,,,,,,

k t'

e

  • I)T

.a.. . u s. = vets.a essws.co.v uuv.u c, LICENSEE EVENT REPORT (LER) TEX 1 CONTINUATION * = ovincvs w mu v:.

448sats. 3 3t 18

  1. 4.si6s f y means sie occast NWMet. t;l (g R AUMg 6 8 ($l l pagggg I

,. p m.mpe n;e m Li:mric.. Generating station Unit 2

~~

o is to io lo l 315; 3 8; 9 ._ 0 j 0[ 7 0l0 0:2 es 0l#

7i~n , . - - c ,.- a u .n m  !

Unit Conditions Pri. to the Events l s

Unit 2 Operating Condition: 4 (Cold Shutdown)

Reactor Power: On Description of tha Event: ,

r on September 20, 1989, Limerick Generating Station Unit 2 was in  ;

cold shutdown with the 'B' loop of the Residual Heat Removal t (RER) system (EIIStBO) in operation providing shutdowr. cooling.

Preparations were being made to re-start Unit 2 following a +

Startup Test Program planned scram on September 18, 1989.

l-At 1515 hcurs on September 20, 1989, the mode swicch was transferred from Shutdown to Startup anti Operational Condition (OPCON) 2, STARTUP, was entered. At 1517 hours0.0176 days <br />0.421 hours <br />0.00251 weeks <br />5.772185e-4 months <br />, licens,ed operations personnel discovsred that the 'B' RER' subsystem was '

l operating in the shutdown cooling mode and was therefere not available for the Low Pressure Coolant Injection (LPCI) mode.. ..

Technical Specifications (TS) Limiting. Condition for Operation '

L (LCO) 3.5.1, " Emergency Core Cooling Systems," requires that all (

four subsystems of the RHR system be available for,LPCI in

, STARTUP. If one of these subsystems is not a.rallable, the associated TS action requires restoration of the subsystem to an

  • L operable statue within 30 days or to be in at..least hot shutdown [
within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />. TS 3.0.4 states that." Entry into an ,

OPERATIONAL CONDITION or other specified condition shall not be ,

made when the conditions for the Limiting Condition for Operation

a are not met, and the zssociated ACTION requires shutdown.if'they l are not met within a specified time interval." When STARTUP'was .

entered with one subsystehn of LPCI not available, it resol ted in -  !

9' a condition prohibited by TS LCO 3.0.4 and as stich-is' reportable  !

under the provisions of 10 CFR 50.73 (a)(2 (1)(B). . Upon S.

discovery, shutdown cooling was terminated and the 'B' RL*R.

. subsystem was re-aligned and was available for LPCl at 1823

'[ i hours, September 20, 389. '

,l -l

.a e e

1' r

,7 ,..m _.

.,p >

Q=s pq -

.A L ,

n:Q- c

)y\ a a R a...h .u .[\\j"iL,

. a n w i

i w-. . .~;

p / . ,[

~ _ -

,' s !s .

., g , , . [

' ,.a . . .

E ...

.l' l

l-UCENSEE EVENT REPORT (LER) TEXT CONTINUATION u s oca.. . . var.., c:. ...,

amovin eve w aiw:4 l

)

i . Asrat, has tu woh stnuases. ge g g , ,y,, , , ,,, ,4g, w l

l .

' em m. "2:ut.w r,t;i,j:t Limerick Gene. cati g station Unit 2 .

o (s t o ; o l o l 3; 5l 3 8; 9 __ 0 ;0[ 7 ._ 0 ; 0 0l 3 o, o l4 ,

l rso- - s. ,,.n, .w.,nn l

Consequences of the Event: .

The consequences of the ' event were minli e..o and there was no release of radioactive material as a result of this event.

L Thit other three RER subsystems.were operable and aligned in the LPCI mode and were available to perform-the systes's design function if required. Additionally, no control rod withdrawal  ;

occurred during thfa time period and the reactor remained shutdown.and depressurised, sainimizing the potential need for .

l operation of RER in the LPCI mode or operation of other Low Pressure Emergency Core Cooling! Systessa If the subsystem had remained in the' shutdown cooling mode, the configuration would have been noted during plant heatup because isolation of the' shutdown cooling valves would-have automatically-cccurred at 75 psig reactor pressure causing a. pump trip and annunciation in the control room.

Cause of the Event:

The cause of the event is personnel error. The Shift ,

Superintendent and Control Room Shif t Supervi:sor, both licen. sed L personnel, did not coat,1y with the provisions of procedure GP-2,

" Normal Plant Startup." GP-2 requiren, by reference to a system operating procedure, that RHR be aligned in the LPCI mode prior to placing' the mode switch in Startup and entering STMtTUP. GP-2 also requires that all open itene identified by the Plant Operations Review Committee for changing OPCON's be resolved satisfactorily or be waived by the Plant 14anager or -alternate.

The. transfer of RER from Shutdown Cooling to-the LPCI mode was ,

one of these open items. ihe transfer of RER to LPCI mode was not completed when the reactor. entered STA9. TUP.

L r

Contributing to this event is ' ai lack of' clarity as to which steps L, 'of'GP-2 are required to be completed prior:to entering.STARTUP, P s The lacn of clarity is:due to the fact that the procadure is > >

L L intended to be'used as guidance and many of the steps in GP-2'may L be performed .in parallel, u ,

fg ,

v: ,

e ir, p e , a . - -- - - - - - - - - - - - - - - . _ - - - . _ -__

e LV1

.. , e T ,'

, fl7l ll :

7

  • )0 ,, , 'l ' <l 'f- .p' ilhniM !,llU. '3 l6, ' ,

' '_ i .

,1c r . =2e v s. avessaa essaaro , couvec,  ;

tlCENSEE EVENT REPORT (LER) TEXT CONTINUATION ameria cvs =o ano.cs. ,

,, . swan s si n

~ '~

s aci6s e , na.<e sie doGnaf NuM444 Q3 L t a uu e g , ;48

  • t i3i aam;r wc. tut:1 vs.. s.

Limerick Generating Station Unit 2 o is to lo lo l 3; 5; 3 8; 9 _

0l0[ 7 0 'l 0 0 14 or 0 l4 f rsrr 4, . ,,e w mu.,im Corrective Actions i t

The 'B' RER subsystem was removed from shutdown cooling at 1517 hours0.0176 days <br />0.421 hours <br />0.00251 weeks <br />5.772185e-4 months <br /> and aligned in the LPCI mode 2nd operable at 1823 hours0.0211 days <br />0.506 hours <br />0.00301 weeks <br />6.936515e-4 months <br /> on' September 20, 1989.

Actions Taken to Prevent Escurrence:

GP-2 was. temporarily changed on September 20, 1989 to identify those steps required for entry into OPCON 1, POWER OPERATION to prevent a similar occurrence during the transition fron'STARTUP

', to POWER OPERATION. GP-2 was permanently revised on October 3, cD89 to identify those steps required to be completed prior to ,

entry into each operating condition. No similar problems were found in review of other operation procedures that have_ parallel ,

action steps.

. The Shift Supervision involved were counseled on the need for complying with all procedural requirements particularly'since they are in a leadership position.

i t'

Previous Similar Occurrences

i -

t

[ There have been no previous similar occurrences iravolving non- '

i compliance with TS LCO 3.0.4.

k

~

LER's 1-84-044, 1-85-069, 1-85-091, and 1 038 reported personnel errors involving Shift Supervision. 'However, these' '

events involved unrelated circumstances and the previously

,irplemented corrective actions are considered adequate.

/

s.

d# * = *

p. : =,

n y.

Q

r +

,

Retrieved from "https://kanterella.com/w/index.php?title=ML19325D500&oldid=2487686"