05000281/LER-1981-052-03, /03L-0:on 810815,during Periodic Testing, MOV-SW-202A Failed to Close Due to Grounded Motor.Caused by Flooding in Sump.Pump Motor Replaced: Difference between revisions

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{{Adams
#REDIRECT [[05000281/LER-1981-052, Forwards LER 81-052/03L-0]]
| number = ML20010G733
| issue date = 09/14/1981
| title = /03L-0:on 810815,during Periodic Testing, MOV-SW-202A Failed to Close Due to Grounded Motor.Caused by Flooding in Sump.Pump Motor Replaced
| author name = Wilson J
| author affiliation = VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
| addressee name =
| addressee affiliation = NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
| docket = 05000281
| license number =
| contact person =
| document report number = LER-81-052-03L-02, LER-81-52-3L-2, NUDOCS 8109220463
| package number = ML20010G725
| document type = LICENSEE EVENT REPORT (SEE ALSO AO RO), TEXT-SAFETY REPORT
| page count = 2
}}
{{LER
| Title = /03L-0:on 810815,during Periodic Testing, MOV-SW-202A Failed to Close Due to Grounded Motor.Caused by Flooding in Sump.Pump Motor Replaced
| Plant =
| Reporting criterion =
| Power level =
| Mode =
| Docket = 05000281
| LER year = 1981
| LER number = 52
| LER revision = 3
| Event date =
| Report date =
| ENS =
| abstract =
}}
 
=text=
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LICENSEE EVENT REPORT coNTnom stock. I I
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(PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)
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: o128 With the unit at full power, during the performance of Periodic Test 25.1.
; o a ; ! !, MOV-SW-202A (service water to the flash evaporator, vacuum priming and condensate o la l !
polishing building) failed to close due to a grounded motor. This is contrary to l
l-istl T.S.
:- 3.4.A.5 and reportable per T.S.6.6.2.b.(2).
Since manual isolation of the flowl
! c is l L path remained available and the intake canal level was more than 7 feet greater than I l o 17 l i the minimum recuired level of 18 feet. the health and safety of the public were not I loee!I affected.
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==CAUSE==
CAUSE COMP.
VALVE CODE CODE SUBCODE COMPONETT CCDE SUSCOCE SUBCoof
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ATTACHMENT 1 SURRY POWER STATI03, UNIT 2 DOCKET NO:
50-281 REPORT NO:
81-052/03L-0 EVENT DATE:
08-15-81
,MOV-SW-202A FAILED TO CLOSE 1.
 
==EVENT DESCRIPTION==
With the unit at full power, during the performance of Periodic Test ?S.1, MOV-SW-202A (Service Water to the Flash Evaporator, Vacuum Priming and the Concensate Polishing Building) failed to close due to a grounded motor.
Since the valve would not have closed automatically if required, this is contrary to T.S.3.4sA.5 and is reportable per T.S.6.6.2.b.(2).
2.
PROBABLE CONSEQUENCES:
Following a DBA, water in the intake canal would be used to cool the re-circulation spray heat exchangers. The service water valves to vacuum priming, condensate polishing and flash evaporator are designed to close automatically on a CLS Hi-Hi signal in coincidence with a station blackout to conserve water 4.n the intake canal for the recirculation spray heat exchangers. During the time of valve inoperability, the intake canal level was more than 7 feet greater t'an the minimum required level of 18 feet.
In addition, manual isolation of the flow path remained available. Therefore, the health and safety of the public were not affected.
3.
 
==CAUSE==
The motor opert tor for MOV-SW-202A was grounded due to# flooding in the sump.
Water from an equipment leak in the turbine building had collected in the valve pit, and was found to be in contact w2th the motor operator.
4.
 
==IMMEDIATE CORRECTIVE ACTION==
The aump was drained, the motor operator was replaced and the valve cycled to verify operability. The valve responded properly.
5.
SUBSEQUENT CORRECTIVE ACTION:
None required.
6.
ACTION TAKEN TO IREVENT RECURRENCE:
The sump level alarm system will be reviewed to eliminateispurious and nuisance alarms, allowing plant personnel to respond more effectively to accumulation of water in the valve pits.
7.
GENERIC IMPLICATIONS:
1 None.
}}
 
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