ML20045G742

Special Rept:On 930526,Channel 9 (SG A,Channel 2) & Channel 11 (SG C Channel 2) Declared Inoperable When Channels Failed Acceptance Criteria for Background Noise.Work Request Written to Repair Channels During Future Outage

ML20045G742
Person / Time
Site:	Catawba
Issue date:	06/30/1993
From:	Rehn D DUKE POWER CO.
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9307150120
Download: ML20045G742 (2)

Text

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l Duke Poa er(bmpany D L Roty ']

Catau ba Nuclear Generation Department Hre President ^]

P!KI Concordhad (8(2)8313205 Othce York. 5C 29745 (g03333j34 5pu, g

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June 30,1993 U. S. Nuclear Regulatory Commission '

ATTN: Document Control Desk Washington, DC 20555

Subject:

Catawba Nuclear Station, Unit 1 Docket No. 50-413 Special Report

'libration and Loose Parts Monitoring System Pursuant to Technical Specification 3.3.3.9, find attached a Special Report concerning the inoperability of the Unit 1 Vibration and Loose Parte Monitoring System channels 9 (Steam Generator A) and 11 (Steam Generator C).

Very truly yours, D0D. L. Rehn KEN /SROG3093. LPM Attachment xc: S. D. Ebneter -

Regional Administrator, Region II ,

R. E. Martin, ONRR R. J. Freudenberger Senior Resident inspector 9307150120 930630 P"

PDR ADDCK 05000413 iG S PDR g gg

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L . l, SPECIAL REPORT i

CATAWBA NUCLEAR STATION, UNIT 1 Vibration and Loose Parts Monitoring System Channels 9 and 11 On May 20,1993, channel 9 (S/G A Channel 2) and 11 (S/G C Channel 2) were declared inoperable. Both channels failed acceptance criteria for background noise. A work request (#93018325) has been written to repair these channels during a future outage of sufficient length. The following channel is operable and providing coverage as noted:

Channel 7: Steam Generator C Since these channels have been inoperable for m: e than 30 days, they are reportable to the NRC pursuant to Technical Specf teation 3.3.3.9, i

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