ML20147A867

/03L-0 on 780819:during an Investigation of a DC Ground,Leads Were Being Lifted on the Indication Circuit of the East Feedwater Pump Safety Injection Valve (HV-853A). (Encl to 7809210176)

ML20147A867
Person / Time
Site:	San Onofre
Issue date:	09/07/1978
From:	Curran J SOUTHERN CALIFORNIA EDISON CO.
To:
References
LER-78-010-03L-0, LER-78-10-3L, NUDOCS 7809210178
Download: ML20147A867 (1)

Text

U. S. NUCLE AR REGULATORY COMMISSloN AFjC FQPM s 366 (7-77 F LICENSEE EVENT REPORT CONTROL 9 LOCK; l I (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

. l l l l l 1014 l l ClLICENSEEAl SJ 0l Sl 1l@l 0l 0l -l 0lLICENSE 14 tb 0l Ol 0l 0l -l 0l Ol@l NUMiiEH 26 4 l l LICENSE 26 l l l 1TYf PE11@l JO l

$1 CAT $8 l@

1 H 9 CODE CON'T lolil S$$

l L l@l 01 5 l 01 - l 01 21 01 6 l@l O l 81 1 1 81 7 l 81@l 74 75 Ol REPORT gl nlD7lAT E 71 RHQl@

7 8 60 61 DOCKET NUMBE R 68 69 EVENT DATE EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h

o i 2, l During an investigation of a DC ground, leads were being lifted on the indication 1 g g i 3,  ;

circuit of the East Feedwater Pump Safety Injection Valve (HV-853A). An error was l

g i,i ;

made which caused the valve to open and allowed condensate to flow into the refueling ig igi ,

water storage tank. The valve was closed and the east feedwater pump stopped. l Boron concentration in the Refueling Water Storage Tank remained above the Technical I l 0 l6 ] l

o i, ; Specification limit. l 1

1 O 18 I I ,,

"ME

'^'#

CO S&"& COMeONmTCOoE SusCL s%L jo}9l y 8 lS l Fl@ @@ l Cl@ lV l A l L lV l0 lP l@ $@ J @

9 10 11 12 13 16 19 20 SE QUENTI AL OCCU R RE NCE HE POFIT REVISION EVENT YE AH RE PORT NO. CODE TYPE NO.

L E R RO

@ ,ngc4T, l7l8l l-l l0l1l0l l/l l013 l 1 Ll l-l 10 l 32 22 23 24 26 27 28 29 J u. 31

_ 25 AKE CTON ON PL ANT T HOURS 22 S BMI D F0F UB- PPLIER MANUFAC UF ER l3JH lglJ4Hl@ lBl@

3S lZl@

36 10l0l1l5l J, / 40 ldi Y l@ l42 Yl@ lLl@

43 l44 9 l 2 l 51047l@

CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h

i ;o i l Solenoid valve 83-4 on HV-853A was inadvertently energized while the light indicationi i, i, i ;

lead on the same circuit was lifted. SV 83-4 completes an open 3ignal to the valve l

,,,,,g and the valve operated as designed to the safety-related position. This incident l

,,i3; l will be reviewed by appropriate station personnel. I l

l i 141 l

, eo a 9 STA 5  % POWEn OTHER ST ATUS SC F DISCOVEHY DESCHIPTION Ii I5 l l El@ l 0 l 9 l 1 l@l NA l l A l@l Operator observation l A 11 Vil y CC TENT REL E ASED OF RE LE ASE AMOUNT OF ACllVITY LOC AllON OF RE LE ASE NA l l NA l li/ Ic Bi lZ 9 l @ l 10Z l@l il 44 4L 80 PERSONNE L E XPOSURES NUMP.ER TYPE Df 5CniPTION NA l li 17 l l0 l0 l0 l@l Zl@l" *

' " " n nsONd',wuL S NUust a oESCn PTiON@

NA l li ls Hl 9l0 l0 l0 l@l 7 11 12 80 L OSS Or OH DAMAGE TO F ACILITY i , m i f 'i g j ~ R "

H 9 10 789 7 2 / 9 / 7 F 80 i

" NRC USE ONL Y ,

12 l ol I N,[Y8C',';g,,d,oy

@l N

@ ha _ l lllllllllllll5 sc,rrvu 7 a o m oc 69 80 ;;

NAME OF PREPAHER PHONE: