ML19262C457

LER 80-013/03L-0:on 800114,while Using Steam Driven Feedwater Pump 1-FW-P-2 to Add Feedwater to Steam Generator A,Water Leaked from Pump Oil Cooler Gasket.Caused by Blown Gasket.Gasket Replaced

ML19262C457
Person / Time
Site:	North Anna
Issue date:	02/12/1980
From:	Cartwright W VIRGINIA POWER (VIRGINIA ELECTRIC & POWER CO.)
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
Shared Package
ML19262C456	List: ML19262C455 ML19262C457
References
LER-80-013-03L, LER-80-13-3L, NUDOCS 8002130493
Download: ML19262C457 (2)

Text

NRC FORM 36G U. S. NUCLEAR REGULATORY COMMISSION (7-77)

LICENSEE EVENT REPORT CON TROL BLOCK: l l l l l l l (PLEASE PRINT OR TYPE ALL REQUIRED INFORMATION)

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14 h HEPORT DATE EO

/ 8 LU 61 DOCK ET NUMahR EVENT DATE EVENT DESCHIPTION AND PROBABLE CONSEQUENCES h o 2 l While using steam driven auxiliarv feedwater ," o 1-FW-P-2 to add feedwater to "A" l o 3 steam venerator, water was observed leaking from the cump's oil cooler gasket. As l o ;4 l a result, with the unit in Mode 3, the T ump was secured and removed from service for i o gi repair. Since botu motor driven auxiliarv Jeedwater pumos remained available for I o 6 l operation if required the heal.th and safety of the general public were not affected. l 0 7 l Reportable pursuant to T.S. 6.9.1.o.h.

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7 9 11 12 13 18 19 zu SEQUE N TI AL OCCLAAENCE REPORT REVISION

,_ EVENT YE AR REPOH T NO CODE TYPE N O.

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, I 23 LJ 3J L-J 31 Lo_J 32 ACTION FUTUHF EFFECT SHUTDOWN A TT ACHYE NT U 834 PH6VE COMP. COMPONENT TAKEN AC TION ON PLANT UETHOD HOURS .2 SUBYtTTED FO A > dub. SUPPLIER MANUFACTURER lAl@lzl@ lz@

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41 4; nl@ l A lh 43 44 T lo l7 5lh 47 CAUSE DESCRIPTION AND CORRECTIVE ACTIONS h ilo l The water leak resulted from a blown casker on rbo oil ennlor Fnr ehn envrv euc h I

[i j i l l The damaged gasket was replaced and the punn was returned to service.

i I 2 I It t al l l i 4 I I

7 8 9 80 STA S  : )OWER OTHEH STATUS ISC OV R DISCOVERY DESCRIPTION 7

i s 8 9 Cl@ lololo] @l '3 17 11 NA 44 l Al@lOperatorObservation 45 46

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• POSURES N U'.* 4 f A TYPE DE%RIPTION i 7 1 0l o 01@l zl@l 11 13 NA 60 l

7 8 9 12 PERSON El tNJ s9tES Nu'PEH OESCRIDTION li la 8l 9I ol ol ol@l 7 11 12 NA 80 l

Loss OF Oa cavaGE TO F ACitiTV TYPE DE SC A1* TION

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W. R. Cartwtight pgny 703-804-5151 E

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

Attachment:

Page 1 of I Doc ke t No. 50-338 Repor t No. LER 80-013/03L-0 Description of Event On January 14, 1980 with the unit in hot standby, steam driven auxiliary feedwater' pump 1-FW-P-2 was secured and removed from service When water was observed Icaking from the oil cooler during pump operation. At the time, 1-FN-P-2 was being used to add feedwater to "A" steam generator.

Probable Ccnsequences of Occurrence The consequences of this event were limited because both motor driven auxiliary feedwater pumps (1-FW-P-3A and 3B) remained available for operation if required. The ef fects were also minimized by the fact that the operable auxilt,ry feedwater pump was restored to operable status within the 72 hour8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> time !mit allowed by the Action Statemnet of T.S. 3.7.1.2.

As a result, the alth and safety of the general public were not affected by this event. There are no generic implications associated with this occurrence.

Cause of Event The cause of the leak was a blown gasket on the oil cooler for the pump's terry turbine. ,

Immed ia te Corrective Action The oil cooler gasket was replaced and the auxiliary feedwater pump was re turned to service.

Scheduled Corrective Action No scheduled corrective action is required.

Actions Taken to Prevent Recu rrence No further actions are required.