ML20128H339

Special Rept:On 960828,channel/detector Which Monitors Acoustic Level on 'B' Main Steam Line Annunciated in Mcr. Channel/Detector Malfunction Was Isolated to Instrumentation Contained within Inerted Unit 2 Primary Containment

ML20128H339
Person / Time
Site:	Limerick
Issue date:	10/01/1996
From:	Boyce R PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9610090310
Download: ML20128H339 (2)

Text

Robert W. Boysa Plant Manager

-e Lrnerick Generating Staton

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. PECO NUCLEAR nco te c--

Lrnerick Generating Station Unit of PECO Energy Po Box 2300 Sanatoga, PA 19464 4920 610 718 2000 j l

T.S. 3.3.7.10 T.S. 6.9.2 October 1, 1996 Docket No. 50-353 License No. NPF-85 U.S. Nuclear Regulatory Commission

• l Attn: Document Control Desk l Washington, DC 20555

SUBJECT:

Limerick Generating Station, Unit 2 l Special Report for the Inoperability of a Loose-  !

Part Detection System Channel for More Than 30 '

Days j

This Special Report is being submitted pursuant to the requirements of Limerick Generating Station (LGS), Unit 2 l Technical Specifications (TS) Section 6.9.2 as required by TS Section 3.3.7.10, " Loose-Part Detection System." TS Section 3.3.7.10 requires that with one or more of the required Loose-Part Detection System (LPDS) channels inoperable for more than 30 days, a Special Report must be 1 prepared and submitted within 10 days outlining the cause of i the malfunction and the plans for restoring the channel (s) to operable status.

On August 28, 1996, the channel / detector which monitors the acoustic level on the 'B' Main Steam Line annunciated in the Main Control Room. At 1130 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.29965e-4 months <br /> on August 28, 1996, the channel / detector was identified tc he malfunctioning and was subsequently declared inoperable.

This channel / detector malfunction was isolated to instrumentation contained within the inerted Unit 2 Primary Containment. A work order was initiated to inspect the instrumentation within the Primary Containment during the next Unit 2 outage of sufficient duration.

l 9610090310 961001 -

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October 1, 1996 Page Twc The malfunctioning channel / detector has no impact on plant operation and no interim corrective actions are necessary. 1 A supplement to this Special Report will be submitted once the cause is determined and the plans are identified for restoring the channel to an operable status.

If you have any questions or require additional information, please contact Mr. James L. Kantner at (610) 718-3400.

Very truly yours, (p 4 DM

cah cc: H. J. Miller, Administrator Region I, USNRC N. S. Perry, USNRC Senior Resident Inspector, LGS t

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