ML20096A876
| ML20096A876 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/18/1995 |
| From: | Mccollum W DUKE POWER CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9601110125 | |
| Download: ML20096A876 (1) | |
Text
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Dukekwr Company :
WtutorR McCOLu n la Cyatel>a Nuclear Generation &partment -
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200 ConcordRoa<t (8mJul4:00 office
' York;SC2976 '
(SW)D14L'61;u L
DUKEPOWER December 18, 1995 U. S. ? Nuclear Regulatory. Commission.
- , ATTN': - Document Control Desk-Washington, DC 20555
Subject:
Catawba Nuclear Station, Unit 1
. Docket No. 50-413 Special Report 1;
Vibration and Loose-Parts Monitoring System r
i On November 20, 1995, Loose Parts Monitoring System (LPMS) Channel 5
-(Upper Rx Vessel at 120 Deg) was declared inoperable due to erratic Preamp
[
Bias Voltage indications.
This was discovered during periodic surveillance 1 testing per PT/0/B/4600/03.
The alarming capability of Channel' 5 was disabled and the channel was entered into Technical Specification Action Item Logbook '(#C1-95-01807). as inoperable. Problem Investigation Process (PIP) 1-C95-2245 has been initiated
" for' tracking purposes;- work request 95048483 has been initiated to perform corrective maintenance on this instrumentation. This work will be performed during Unit 1 Cycle 9.
Redundant monitoring of the upper vessel data collection region is afforded by LPMS Channel 6 (Upper Rx Vessel 240 Deg).
Since this channel has been inoperable for 30 days, this report is submitted pursuant Selected Licensee Commitment 16.7-4 and Technical Specification 6.9.2.
Very truly yours, fW W. ' R. McCollum KEN /SR121895. LPM Attachment u
' xc:. S. ' D.~. Ebneter, Regional Administrator R'. E. Martin, ONRR' R.' 'J. Freudenberger, ' SRI 9601110125 951218 w e =rmww PDR ADOCK 05000413-C S
PDR ;.