ML19344F090

LER 80-019/03L-0:on 800817,while Operating at 400 Mw,After Performance of Reactor Core Isolation Cooling Monthly Pump Operability Surveillance Test,Flow Controller Was Left in Manual.Caused by Operator Failure to Readjust to Automatic

ML19344F090
Person / Time
Site:	Quad Cities
Issue date:	08/25/1980
From:	Kopacz J COMMONWEALTH EDISON CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML19344F085	List: ML19344F084 ML19344F090
References
LER-80-019-03L-04, LER-80-19-3L-4, NUDOCS 8009120399
Download: ML19344F090 (2)

Text

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- LICENSEE EVENT REPORT p CONTROt. S LOCK: l l l l l l lh 6

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EVENT DESCRIPTION AND PROeABLE CONSEQUENCES h

["6TTl l On August 17, 1980, with Unit 1 operating at 400 MWe, the RCIC Monthly Pump l Io Ia l 1 Operability Surveillance was performed. At the conclusion of the test the flow I .;

in t ai l controller was inadvertently lef t in manual at a reduced flow. No other RCIC l l o # 31 l components were affected. Had an RCIC Auto Initiation taken place, the system i j io is i i valves would have lined up properly and partial flow would have been provided. [

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43 44 47 33 J4 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h l

1i ll The Unit licensed ooerator failed en nince the fino controller in automatic.

,.,.,i The flow controller was placed in automatic upon detection. The Shift Technical I Advisors are presently accompanying the operators during their panel checks. I

,., ,g This event is being discussed with the operators and procedures were reviewed. I I

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PARER l .A v E op ,O' 0 0 9 2 % ;p p

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l. LER NUMBER: LER/R0 80-19/03L

11. LICENSEE NAME: Commonwealth Edison Company quad-Cities Nuclear Power Station lil. FACILITY NAME: Unit One IV. DOCKET NUMBER: 050-254 -

V. EVENT DESCRIPTION:

On August 17, 1980, with Unit One operating at 400 MWe, the RCIC Monthly Punip Operab!Ilty Surveillance was performed. At the conclusion of the test the flow controller was inadvertently lef t in MANUAL at a reduced flow.

VI. PROBABLE CONSEQUENCES OF THE OCCURRENCE:

The Reactor Core Isolation Cooling System is designed to supply makeup cooling water to the reactor vessel should the main condenser become isolated from the reactor, with normal feedwater unavailable. The HPCI System was operable at all times the RCIC flow controller was in the MANUAL mode. No other RCIC components were affected by this event.

Had ar RCIC automatic initiation event taken place, the system valves would have lined up properly, and partial flow would have been provided.

Vll. CAUSE:

At the conclusion of the pump operability surveillance the Unit Licensed Operator failed to place the flow controller into AUTO.

Vill. CORR,ECTIVE ACPION:

The immediate action upon detection of the occurrence was to place the flow controller into AUTO. The Shift Technical Advisors are presently accompanying the operators during their panel checks to provide additional assurance of correct Control Room panel line-ups. This event is being discussed with those operators involved. Procedures were reviewed, and i

no additions or changes are deemed necessary.

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