05000338/LER-1979-098-03, /03L-0:on 790808,review of Completed Maint Procedures Showed motor-operated Valve QS102B Was Functionally Tested But Not Timed Prior to Return to Svc. Caused by Personnel Error

/03L-0:on 790808,review of Completed Maint Procedures Showed motor-operated Valve QS102B Was Functionally Tested But Not Timed Prior to Return to Svc. Caused by Personnel Error

ML19208A019
Person / Time
Site:	North Anna
Issue date:	09/07/1979
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19208A016	List: 05000338/LER-1979-098-03, /03L-0:on 790808,review of Completed Maint Procedures Showed motor-operated Valve QS102B Was Functionally Tested But Not Timed Prior to Return to Svc. Caused by Personnel Error 05000338/LER-1979-099-09, /09L-0:on 790809,containment hi-hi Pressure Channel II Annunciator Became Energized on 790801.Channels I,Iii & IV Remained in Operation.Caused by Failure of Heat Sensitive W-39-1-J Card Component ML19208A015
References
LER-79-098-03L, LER-79-98-3L, NUDOCS 7909120430
Download: ML19208A019 (2)

LER-1979-098, /03L-0:on 790808,review of Completed Maint Procedures Showed motor-operated Valve QS102B Was Functionally Tested But Not Timed Prior to Return to Svc. Caused by Personnel Error

Event date:
Report date:
3381979098R03 - NRC Website

text

NRC FORM 366 U. S. NUCLE AR REGULATORY COMMISSION (7 77)

LICENSEE EVENT REPORT CONTROL HLOCK: l l

l l

l l

l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATIONI i

e LV l A NlAlS 1l@l0 01 -

0 l 010 l 0 l 0 l-l 0 l 0 @l4 l1 l1 l1 l1 l@l l

l@

o 1

l 8 o LICEr.SEE CJDE 1*

'S LICENSE P:UYdEH 25 2ti LICE NSE T Y PE 30

$7 CA1 bd CON'T Za"J l L l@l O l 5 l 0 l 0 l 013 l 3 l 8 l@l 018 ' O l8 l 7 l 9 l@lo l o 10 717 lo l@

o i

/

8 W

61 DOCKET NUVdER Od 63 EVENT DATE 14 75 REPOH T DATE 80 EVENT DESCRIPTION AND PROBABLE CONSEQUENCES h L0n August 3,1979, while reviewing completed maintenance reports, Vepco QC discovered I o

2 l that MOV-QS102B was functionally tested but not timed prior to returning it to I

o 3

o 4

service after maintenance.

Probable consequences of this event were minimal since I

I redundant valve MOV-QS102A was available and retest showed that M0V-QS102B met the I

o s

I opening time requirement.

P? portable pursuant to T.S. 6.9.1.9.c.

The health and I

o s

l l safety of the general oublic were not affected by this evon*

o 7

Eo~irl l I

80 7

8 9 DE C E SUS O E COVPONENT CODE S' SC DE S

ODE l Sl Cl@ l Al@ l C l@ l Vl Al Ll Vi Ej Xl@ l El@ l Di@

o 9

1 8

9 10 11 12 13 18 13 20 SEQUENTI AL OCCU R R E T.CE REPORT R E VIS,0N LER EVENTYEAR REPOR T NO.

CODE TYPE NO.

@ g,Eg'RO l7 l9 l l_l l0l9 8l l/l l 0l 3l lLl l-l 0l RT

_ 21 22 23 24 26 21 23 23 30 31 32 T ON O PL A T T

HOURS 22 S B 1 O

FO 1 8.

SU PtlE MAN FACT RER TAKE A

lHlg}34Z lg gg

'}36Zl@

l0 l0 l0 l l

lY g lNlg lA}g lLJ2 lr ;0 lg 33 35 3/

40 41 42 43 44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS i to l Personnel involved with writing maintenance reoorta and performing renairs failea to I l realize that this valve should have been timed as required by the IWV program.

I i

i l Personnel involved have reviewed the event and have been inseructed in the reaniver enti; i

7 l i l 31 l i

1 4

l l

7 8 3 80 ST 5

%POAER OT9ER STATUS SC RY DISCO'/ E R ( DESCR'PTION El@ l ll0 0l@]

NA l

B l@l QC Review of Maintenance Report i

s A DVITY CO T E S. T RELEASED OF RELE ASE AVOUNT OF ACTIVITY LOC ATION JF RELEASF

[ Zj @ l Zl@

NA l

NA l

i c

7 d 9 to 11 44 45 80 PE RSONNE L E)(POSUR ES N 7?d E R TYPE DESCRIPTION s 1010 0l@lZ @l NA l

i 7

PERSONNE L INJJ fES f4WaE R D E SCR.? '10 N i l-10 0101@l

_ jA l

T 1

4 9 11 12 80

'2A ' ;fs"C # M.? " '" " @

7909120 Y 3 0 1

g lZl@l NA l

7

- 9 10 80 [2 lol d[ @ lnE san, n ON @

N RC W ON L Y NA O '>

nne I

illllllllllll]

1 2 9 10

'v b v

% 69 80 ;

NAME OF PREPARER PHONE-

Virginia Electric and Power Company North Anna Power Station, Unit #1

Attachment:

Page 1 of 1 Docket No. 50-338 Report No. LER 79 -093/03L-0 Descriotion of Event On July 14, 1979, the packing in MOV-1S102B was adjusted.to correct for leakage.

The ASME Section XI subsection IWV program requires that this valve be tested to determine that its opening time is within the time specified.

Contrary to the above,and reportable per..S.

6.9.1.9.c., the valve opening time was not determinec after maintenance.

Quality Control review of the compl.ted maintenance report on August 8,1979 revealed that the valve had been functionall" tested but not timed as required by I!iV.

P obable Corsequences of Occurrence MOV-QS102B is one of two redundant valves in a parallel flow path.

Both valves are on the discharge line of the chemical addition tank and open on a Containment Depressurization Actuation signal to discharge sodium hydroxide into the refueling water storage tank for containment quench spray.

The redundant valve in parallel with MOV-QS102B was always available if requirec'.

Furthemore MOV-QS102B was timed and its opening time was less than the maximum time allowed. Therefore, the health and safety of the public were not affected by this event. There are no generic implications associated with this incident.

Cause

Opening time was not determined after maintenance because of an oversight by the personnel involved.

Immediate Corrective Action

MOV-QS102B was timed and it met applicable accept.o.ve criteria for performance.

Scheduled Corrective Action No scheduled corrective action required.

Actions Taken To Prevent Recurrence The personnel involved have reviewed the event and were instructed on the importance of satisfying all requirements.

() 4.

uu[