05000334/LER-1980-068-03, /03L-0:on 800917,during Testing of 1C High Head Charging Pump,Bearing Temps Began Increasing & Pump Was Shut Down.Caused by Personnel Not Installing Valves Properly.Valves Repositioned

/03L-0:on 800917,during Testing of 1C High Head Charging Pump,Bearing Temps Began Increasing & Pump Was Shut Down.Caused by Personnel Not Installing Valves Properly.Valves Repositioned

ML20008E251
Person / Time
Site:	Beaver Valley
Issue date:	10/17/1980
From:	Lacey W DUQUESNE LIGHT CO.
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML20008E241	List: 05000334/LER-1980-036, Forwards Updated LER 80-036/03L-1 & LER 80-068/03L-0 05000334/LER-1980-068-03, /03L-0:on 800917,during Testing of 1C High Head Charging Pump,Bearing Temps Began Increasing & Pump Was Shut Down.Caused by Personnel Not Installing Valves Properly.Valves Repositioned
References
LER-80-068-03L, LER-80-68-3L, NUDOCS 8010240461
Download: ML20008E251 (2)

LER-1980-068, /03L-0:on 800917,during Testing of 1C High Head Charging Pump,Bearing Temps Began Increasing & Pump Was Shut Down.Caused by Personnel Not Installing Valves Properly.Valves Repositioned

Event date:
Report date:
3341980068R03 - NRC Website

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23 Ra,cRroAra ao EVENT DESCRwT10N AND PMosAstE CCNSEcuENCES h Ial2l lDurine testine of the IC Hich Head Charcine Pumo, the bearine temperatures began i

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Attachment To L.ER 80-68/03L-Beaver Valley Power Station Duquesne Light Company Docket No.00-334 At 1637 hours0.0189 days <br />0.455 hours <br />0.00271 weeks <br />6.228785e-4 months <br /> on September 17, 1980 while performing a test on the "C" Charging Pump [CH-P-lC], it was noted that the bearing temperatures were increasing and the pump was shut down. Subsequent investigation revealed that two check valves (RW-158] and (RW-159] on the "B" and "A" River Water headers supply lines to the charging pumps oil coolers were installed backward. The "B" header check -alve [RW-158] was repositioned correctly and (CH-P-lC] was tested successfully and declared operable at 0100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> on September 18, 1980.

[RW-159]

was repositioned at a later date because the "A" river water header was out of service at the time and not needed.

The plant was in a shutdown condition and the Bbric Acid Supply sad Low Head Safety Injection Pumps were available to provide Reactor Coolant System makeup.

Therefore, the health and safety of the public was not endangered.

The problem of mispositioned check valves started in April of 1980 (see LER 80-027) when the valves were removed for inspection. The valve internals were deficient so the valve bodies were returned. to the system to restore system integrity with no concern for orientation nor any consequences therefrom.

When new valves were obtained, they were installed in place of the old valve bodies with particular attention to orienting the valves the same way as the bodies.

which were removed. It just so happened, the old bodies were installed backwards.

In the future, operating personnel will assist maintenance in determining check valve orientation when re-installing valves into systems.

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