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

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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,

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D.F. Packer E

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 D

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SPECIAL REPORT l

SR-93-001-00 Inoperability of Condenser Vacuum Pump Wide Range Gas Monitor l

f INTRODUCTION 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 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.

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Additional components have been checked and verified to be working properly.

Despite this significant effort, the monitor has not yet been

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restored to operable status.

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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

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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 becomes known.

I 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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