05000317/LER-1980-040-03, /03L-0:on 800806,during Normal Test of Saltwater Valve 1-SW-5210-CV,SW-5T49-CV Opened Causing 11 SW Header to Decrease 3 Psig.Cause Not Known.Solenoid Valve 1-SV-5149 Tested,Found Operable & Rebuilt as Preventive Measure

/03L-0:on 800806,during Normal Test of Saltwater Valve 1-SW-5210-CV,SW-5T49-CV Opened Causing 11 SW Header to Decrease 3 Psig.Cause Not Known.Solenoid Valve 1-SV-5149 Tested,Found Operable & Rebuilt as Preventive Measure

ML19344F134
Person / Time
Site:	Calvert Cliffs
Issue date:	09/06/1980
From:	Davis S, Rizzo P BALTIMORE GAS & ELECTRIC CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19344F126	List: 05000317/LER-1980-040, Forwards LER 80-040/03L-0 05000317/LER-1980-040-03, /03L-0:on 800806,during Normal Test of Saltwater Valve 1-SW-5210-CV,SW-5T49-CV Opened Causing 11 SW Header to Decrease 3 Psig.Cause Not Known.Solenoid Valve 1-SV-5149 Tested,Found Operable & Rebuilt as Preventive Measure
References
LER-80-040-03L, LER-80-40-3L, NUDOCS 8009120455
Download: ML19344F134 (2)

LER-1980-040, /03L-0:on 800806,during Normal Test of Saltwater Valve 1-SW-5210-CV,SW-5T49-CV Opened Causing 11 SW Header to Decrease 3 Psig.Cause Not Known.Solenoid Valve 1-SV-5149 Tested,Found Operable & Rebuilt as Preventive Measure

Event date:
Report date:
3171980040R03 - NRC Website

text

__

c 17 77)

LICENSEE EVENT REPORT

ii

' (~].

_ PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

Y-CONTRot SLOCK: I' l' 'l~ ~l'

'l-l l

(

1 1

6 l

l

'lo I t l-l Ml 01 Cl C l N j li@l 0 l 0 l -l 9 l 0 l 0 l 0 ] 0 l - l 0 l 0 l@l 4 l 1 l 1 l 1 ] 1 l@l-57 CAT 58 @

8 0 LICENSEE CODE 14 15 uCENSE NUMBER 26 26 UCENSE TYPE JO

.l con'T '

E.RE d lOl51010'lOl3l1171@l018lOl6l8lOl@lol9lol6lRl0l@

10111 EVENT DESCR PTioN A 0PRoBA E C NSE ENCES ITTil i At 0545'while cerfonnino a routine-test of saltwater (SW) valve 1-SW-5210-CV I

~

ITTTl I (#11 SRW heat exchange outlet), SW-5149-CV (Emergency Saltwater Discharge -to I

1014 I l Bay) opened for no apparent reason, cauring #11 SW header to decrease to aoproximatelyl IOI5II 3 psia.

At 0555 normal SW header pressure was restored after SW-5149-CV was I.

The redundant SW g-

.io is i i shut by isolating and bleeding off instrument air to the valve.

. I O l 71 I header remained operable durino the event. This is not a repetitive occurrence.

l I

.lOloli 80 E

CODE S SC E COMPONENT CODE SUSC dt SU E

I_0191 l WI Bl@ l XI@ l x l@ Ix lx [x lx 'x lx l@ l xl@ LZJ @

7 8

9 10 11 12 13 18 is 10 EVENT YEA R RE ORT O 00E N.

@ "LE R RO1810l l-l lOIA10l l/l I 01 31 l Ll l-l l 0]

u,"SE; 21 22,

23.

24 26 27 23 29 30 31 32 EN A N

O P NT M

HOURS 22 58 i POR b 6.

SLPPLt MANUP C RER l-xl@lxl@~lZl@

lZl@

l01010l0l lY l@

IN l@

l A l@

lPi3l410l@.

33 34 35 36 37 40 41 42 43 44 47 CAUSE DESCRIPTtoN AND CORRECTIVE ACT1oNS 27 l No cause for the opening of 1-CV-5149 has been determined.

Initial troubleshooting liiOi li 111 I included ' actuation of CV-5210 with no resulting actuation of 1-CV-5149.

Solenoid I

1. 21 1 -valve 1-SV-5149 was bench tested and operated satisfactorily. As a prevutive i

1 measure, it was rebuilt using an appropriate parts kit from stock.

l iii3i l

11 14 l -l STEE kPOWER ~

OTHER STATUS is RY OISCOVERY DESCRIPTION W (Lj@ lil0l0l@l NA l

lAl@l Operator Observation J.

8*

4!TiviTY CO'dTENT

~

'~

RELEASED OF RELEASE AMOUNT OF ACTIVITY tOCATION OF RELEASE L

li i s 1 [Z_J @ l Zl@l -

NA l

l NA

[

PERSONNEt ExPOSSES NUM8tR TYPE

DESCRIPTION

[

- liI7Il010.10l@[Z_j@l NA l

8

,ERSONuttiN3U4ES' l

oESCRiPTiON@

NuuSER 15 lal1010-10l@l NA l

80 7

8 9 11

- 12

'fv.5 "M;f1ON' ' '^c' '"' @.

5 '

E l

. Li_LtJ LZ._l@l -

NA l

30

- 7 8 9 10

.55T'"EL,.1lO;@

8009120e/ff

~acuseo~'v

=NA

~

l 1lllllllll ltl}

l [3.,Lo,j I N [@)

I

= 7, E

9. -

10 80 %

68 69 (301)269-4742/4786 2,

[NAstE oF PREPARER S. M.' Davis /P. G.'Rizzo paeng;

d~

4,..-

- c

LER NO.

80-49/3L-

' DOCKET NO.

50-511

. EVENT DATE 08/06/80 REPORT DATE 09/06/80-ATTACHMENT,_,

CNUSEDESCRIPTIONANDCORRECTIVEACTIONS:

The. Instrument Air Supply valve has been isolated to prevent inadvertent-acts olon. No malfunction'of the control circuitry was found to exist.

'After initial opening of 1-CV-5149, the valve stuck in the open position.

During the next Unit 1 Refueling Outage the internals of the valve and its actuator will be inspected and repaired as required. _ Maintenance Request 0-80-2991 remains open to record:the. requirement.

e