ML20056H101

Special Rept SR-93-001-00:on 930811,condenser Vacuum Pump WRGM PRM-IRE-002 Declared Inoperable & Not Returned to Svc within Seven Days.Monitor Will Be Returned to Svc After Low Range Sample Flow Cv Repaired & Functionally Checked

ML20056H101
Person / Time
Site:	Waterford
Issue date:	09/01/1993
From:	Packer D ENTERGY OPERATIONS, INC.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
SR-93-001-00, SR-93-1, W3F1-93-0173, W3F1-93-173, NUDOCS 9309080230
Download: ML20056H101 (3)

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E W5F1-93-0173 A4.05 PR September 1, 1993 U.S. Nuclear Regulatory Commission Attn: Document Control Desk  :

Washington, D.C. 20555 i

Subject:

Waterford 3 SES Docket No. 50-382 License No. NPF-38 .

Reporting of Special Report Gentlemen:

Attached is Special Report Number SR-93-001-00 for Waterford Steam Electric  ;

Station Unit 3. This Special Report is submitted per 10CFR50.36(c)(2) and Technical Specifications 3.3.3.1 and 6.9.2. -

Very truly yours,

) lei k? Cf i D.F. Packer E

n. i General Manager  !

Plant Operations DFP/TWG/ssf Attachment i cc: J.L. Milhoan (NRC Region IV), G.L. Florreich, 4 J.T. Wheelock (INP0 Records Center), R.B. McGehee, N.S. Reynolds, NP,C Resident Inspectors Office, Administrator - LRPD n m e. n 9309080230'930901 a,

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SPECIAL REPORT l SR-93-001-00  !

Inoperability of Condenser Vacuum Pump Wide Range Gas Monitor l INTRODUCTION f

At 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> on August 11, 1993, Waterford Steam Electric Station Unit 3 was operating at 100% reactor power when Operations personnel declared ,

Condenser Vacuum Pump Wide Range Gas Monitor (WRGM), PRM-IRE-002, inoperable. Despite prompt and aggressive troubleshooting efforts, the  ;

WRGM has not been restored to an operable . status.  ;

Since the monitor was not returned to service within seven days, this  !

Special Report is provided pursuant to the requirements of Technical  ;

Specifications 3.3.3.1 and 6.9.2.  ;

NARRATIVE  :

On August 11, 1993, Waterford Steam Electric Station Unit 3 was operating i at 100% reactor power when I&C personnel, during performance of a channel j functional test of the Condenser Vacuum Pump High Range Radiation Monitor l loop, noted that the monitor spiked into an alarm condition. At 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br />  ;

on August II,1993, Operations personnel declared the WRGM inoperable. ,

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In accordance with Technical Specification 3.3.3.1 Action 27, Health  !

Physics personnel established the preplanned alternate method for  !

monitoring Condenser Vacuum Pump discharge exhaust as defined in Emergency Plan Implementing Procedure EP-002-050, "Off-Site Dose Assessment j (Manual)." Additionally, the condenser vacuum pump discharge has been 1 diverted to the plant stack which provides a filtered and monitored flow <

path. 1 l

During subsequent troubleshooting efforts to restore the operability of ,

this monitor, Instrument and Controls (I&C) technicians, with the assistance of a technical consultant, have identified several potential e problems and replaced these and other components as a preventive measure. [

Additional components have been checked and verified to be working '

properly. Despite this significant effort, the monitor has not yet been [

restored to operable status. l i

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{ ,However, the original problem with the monitor has now been repaired. l

! During restoration, a problem developed with the low range sample flow .

control valve. The monitor will be declared operable after the sample [

! valve is repaired and a functional check is completed. An updated status i l for this condition will be provided to the NRC if the Condenser Vacuum Pump  ;

i Wide Range Gas monitor is not operable by September 15, 1993. This Special Report will be revised to provide the root cause of the failure when it ,

I becomes known.

Because Health Physics personnel are employing an al ternate method of

monitoring Condenser Vacuum Pump discharge exhaust, the inoperability of  ;

the wide range gas monitor does not pose a safety concern. j PLANT CONTACT  :

l J.G. Hoffnauir, Maintenance Superintendent j (504) 464-3138

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