05000333/LER-1980-021-03, /03L-0:on 800207,during Normal Shutdown Operations Intermediate Range Monitor B Was Made Inoperable to Repair Signal Cable Connector.Reactor Protections Sys B Placed in Tripped Condition.Caused by Normal Wear

/03L-0:on 800207,during Normal Shutdown Operations Intermediate Range Monitor B Was Made Inoperable to Repair Signal Cable Connector.Reactor Protections Sys B Placed in Tripped Condition.Caused by Normal Wear

ML19344D295
Person / Time
Site:	FitzPatrick
Issue date:	03/06/1980
From:	POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19344D293	List: 05000333/LER-1980-021, Forwards LER 80-021/03L-0 05000333/LER-1980-021-03, /03L-0:on 800207,during Normal Shutdown Operations Intermediate Range Monitor B Was Made Inoperable to Repair Signal Cable Connector.Reactor Protections Sys B Placed in Tripped Condition.Caused by Normal Wear
References
LER-80-021-03L, LER-80-21-3L, NUDOCS 8003110642
Download: ML19344D295 (2)

LER-1980-021, /03L-0:on 800207,during Normal Shutdown Operations Intermediate Range Monitor B Was Made Inoperable to Repair Signal Cable Connector.Reactor Protections Sys B Placed in Tripped Condition.Caused by Normal Wear

Event date:
Report date:
3331980021R03 - NRC Website

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EVENT DESCntPTION AND PROBABLE CONSEQUENCES Oio

- lol2l l During normal shutdown operations IRM "B" was made Inoperable to repair a l

signal cable connector.

RPS Channel "B" was placed in the tripped condition l

.as required by TS Table 3.1-1.

No significant hazard existed.

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40 41 42 43 44 47 CAUSE DESCRIPTION ANO CORRECTIVE ACTIONS li j o l l During an earlier calibration technicians noted connector damage as a result I i l i I I of normal wear and tear.

The connector center pin was repaired and IRM B g,,,,l tested to demonstrate operability.

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POWER AUTHORITY OF THE STATE OF NEW' YORK

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JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET NO. 50-333 ATTACHMENT TO LER 80-021/03L-0 Page 1 of 1 During normal shutdown operations instrumentation and Control Technicians noted that a' signal cable connector center pin was damaged on a connector associated with Intermediate Range Monitor (IRM) Channel "B".

Since IRM Channel "H" was inoperable due to an earlier failure and repair of.the connector

- center pin would make IRM "B" Inoperable Reactor Protection System (RPS) Channel "B" was tripped as required by Technical Specifications Table 3.1-1 prior to the start of work. Therefore the event did not represent a significant hazard to

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the public health and safety.

The connector pin damage occurred as a result of normal wear and tear since the connector of concern :Is disconnected and reconnected as part of routine instrument calibration.

Following: repair of the connector by resoldering the center pin, the instrument was verified operable by completion of Operations Surveillance Test F-ST-SM titled "lRM Inoperative Functional Test and IRM High Flux Functional Instrument Check" and restored to service approximately two (2) hours later.

Since the failure was due to normal wear and tear, no additional corrective action to prevent recurrence is requi red.

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