ML20100H980

Special Rept:On 960111,Unit 1 Loose Parts Monitoring Channel 21 Declared Inoperable,Due to Spurious,Unexplainable Electronic Bursts.Work Request Initiated to Pursue Corrective Action

ML20100H980
Person / Time
Site:	Catawba
Issue date:	02/20/1996
From:	Mccollum W DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9602280160
Download: ML20100H980 (1)

Text

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    ;6o            I Catauln Nuclear Generation Department                                            ' l'itehesident           :

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O-- February 20, 1996 f t U.,S: Nuclear Regulatory Commission ~ l ATTN: Document Control Desk

                   #Nashington, DC' 20555                                                                                        ,

Subject:

Catawba Nuclear Station, Unit 1  ! Docket No. 50-413  ! Special . Report .l Vibration and Loose Parts Monitoring System i i On January 11,1996, Unit 1 Loose Parts Monitoring System (LPMS) Channel l' 21 (S/G ID Manway) was declared inoperable due to spurious, unexplainable

                      ~ electronic bursts.                This was discovered during routine surveillance by                       ;

Engineering personnel.  ! i The alarming capability of Channel 21 was disabled and the channel was } entered in Technical Specification Action ' Item Logbook (#C1-95-01807) as I inoperable. Work Request 96003609 has been initiated to pursue corrective l action. Problem Investigntion Process (PIP) 1-C-96-0082 is the tracking j

                      ' document for this failure. LPMS Channels 20 (S/G 3D Secondary) and 22 (S/G 1D Ilot Leg) are operable and provide coverage for the S/G ID                                         ;

collection region. Since this channel has been inoperable for 30 days, this information is submitted pursuant - Selected Licensee Commitment 16.7-4 and Technical , Specification 6.9.2. Very truly yours, l W. R. McColl KEN /SR022096a. LPM xc: S. D. Ebneter, Regional Administrator R.. E. Martin, ONRR ~ R. J. Freudenberger, SRI-9602280160 960220' dI D

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