ML19309C385

LER 80-033/03L-0:on 800303,during Monthly Verification of Proper Auxiliary Feedwater Sys Valve Lineup,Discovered That Position of Valve MOV-FW100B as Written in Procedure Was Incorrect.Caused by Typographical Error in Procedure

ML19309C385
Person / Time
Site:	North Anna
Issue date:	03/31/1980
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19309C384	List: ML19309C382 ML19309C385
References
LER-80-033-03L, LER-80-33-3L, NUDOCS 8004080536
Download: ML19309C385 (2)

Text

NRC FORM 366 U. S. NUCLE A~f) R EGULAT:!:T.Y COMMISSION (7 77) .

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[o l41 l the procedure was incorrect. 'Ihe procedure recuired the valve to be closed which l lo [sj l would have prevented an operable flow path from the auxiliary feedwate r pumps to "B" 1 10 l e, l l steam generator. The health and safety of the general oublic were not n f fected I

[O [il l because valve MOV-W100B was never placed in the incorrect position due to the fact I l0lsl l that the operator discovered and corrected the error the first t irne the fnnity nrnen- l

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44 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l i l 0 l l The procedure indicated an incorrect position for MOV-W100B due to a typonraphical  !

li [ 3 g l crror made when the test was last revised. To allow the surveillance test to be com-l

, , g pleted as scheduled, a procedure deviation was submitted to change the position of thel gig.,y l valve from " Closed" to "Open". The test procedure was then revised to reflect this asi i 4 [ a permanent change. l 7 c 9 80 STA S  % POWE R OTHE R STATUS Ots O RY DISCOVERY DESCRIPTION i s [Ej@ l 1l q q@l NA l [Bj@l Surveillance Test l LC TIVITY CO TENT RELEASED OF RELE ASE AMOUNT OF ACTIVITY LOCATION oF RELEASE i s NA l l NA 7 a 9 LZJ @ LZJ@l 10 ft 44 45 80 l

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Virginia Electric and Power Company North Anna Power Station, Unit #1 Attachnent: Page 1 of 1 Docke t No. 50-338 Report No. LER 80-033/03L-0 Description of Event On May 3,1980, during a periodic test to verify proper valve line-up of the auxiliary feedwater system, it was discovered that the position of auxiliary feedwater control valve MOV-FW1008, as written in the procedure, was incorrect. The procedure required the valve to be closed instead of open.

Probable Consequences of Occurrence With the test procedure requiring valve MOV-FW100B to be closed, no operable flow path would be available from the auxiliary feedwater pumps to "B" steam generator in the event of a total power failure. Because the valve was never placed in the incorrect position due to the operator discovering and correcting the error the first time the faulty procedure revision was used, the health and safety of the general public were not affected. There are no generic implications associated with this event.

Cause of Event The test procedure indicated an incorrect position for valve MOV-FW100B due to a clerical error when the procedure was last revised. Procedures are normally stored on word processing unit cassettes, but this procedure was mistakenly erased which required a complete retyping resulting in the error.

f Immediate Corrective Action A procedure deviation to change the valve position of MOV-FW100B from " Closed" to "Open" was submitted when the test was performed. A revision was then made to reflect this as a permanent change to the procedure.

Scheduled Corrective Action No scheduled corrective action is required.

Actions Taken to Prevent Recurrence Administrative . procedures will be revised to require Station Records to advise the cognizant supervisor which portions of the procedure have been retyped so a more detailed proofreading may be accomplished.