ML20100H975

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Special Rept:On 960111,Unit 2 Loose Parts Monitoring Sys Channel 7 Declared Inoperable,Due to pre-amp Bias Voltage Indicating Zero Volts Twice During Previous Seven Days.Work Request Written to Pursue Corrective Action
ML20100H975
Person / Time
Site: Catawba Duke Energy icon.png
Issue date: 02/20/1996
From: Mccollum W
DUKE POWER CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9602280156
Download: ML20100H975 (1)


Text

,

DukeIbuerConvrany _

Wu.uw R. McCcxwM. JR y:

Catauha Nuclear Generation Det>artment Vicennident 48% ConcordR<al (8W)331-x@ Oflice York, SC2976.

.(80)331-3GFat 9--

February 20, 1996 4

iUgy. Nuclear Regulatory Commission

Subject:

Catawba' Nuclear Station,' Unit 2 1

Docket No. 50-414 Special Report j

- Vibration and Loose Parts Monitoring System

-]

{On January 11,1996, Unit 2 Loose Parts Monitoring System (LPMS) Channel 7 was declared inoperable due to the pre-amp bias voltage indicating zero volt's _ twice during the previous seven days.

This was discovered during the; performance of PT/0/B/4600/03B, Loose Parta Monitor Spectrum Comparison.

Channel 7 was removed from service and entered into the Technical i

Specification Action Item Logbook (#C2-956-0014) as inoperable.

-Work Request 96003399 has been written to pursue corrective action.

Problem Investigation Process (PIP) 2-C96-0079 is the tracking document for ' this failure.

Three other LPMS channels on the same loop are providing coverage for this collection region.

' Since this channel has been inoperable for 30 days, this information is b

submitted pursuant Selected Licensee Commi{ ment 16.7-4 and Technical

Specification 6.9.2.

e

- Very truly yours, Od

,to W. R. McCollum KEN /SR22096b. LPM H-h xc:.S., D. Ebneter, Regional Administrator etto -

. R. E. Martin, ONRR.

R. J. Freudenberger, SRI ~

270019

($9y 0

w._

.