ML20055B518

RO Advising That Triaxial Accelerometer Devices in Reactor Core Isolation Cooling Sys Pump Room Inoperable for More than 30 Days.Replacement Detector to Be Installed by 820831

ML20055B518
Person / Time
Site:	Peach Bottom
Issue date:	07/13/1982
From:	Ullrich W PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC
To:	Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
NUDOCS 8207220448
Download: ML20055B518 (1)

Text

? 1

• ,p  ; _ [. ;

A' 'b. b 1-L'l k O L A - - - - - - - -

uw ).a ) CBLGTVLT TT H EO a f h ATQw!c yggp yg  %

R. D.1. Box tot DELTA.PENMSYl,VANIA 17318 July.13f1982 Mr. R. C. Haynes 4v" Administrator -

O.S. Nuclear Regulafory Cocmission - '

-Region I 631 Park Avenue King of Prussia, PA 19406

SUBJECT:

UNIQUE REPORTING REQUIRDENTS SEISMIC MONITORING INSTRUMENTATION INOPERAB'J FOR MORE THAN 30 DAYS

Reference:

Technical Specification 3.15 B and 6.9.3

Dear Mr. Haynes:

In accordance with the. subject Technical Specification reporting requirements, this is to advise you that the triaxial accelerometer device installed in the Unit 2 RCIC pump room has been inoperable since June 4, 1982.

Apparent Cause: .'.

'Tlie triaxial accelerometer in the RCIC room was damaged by a buildup of water in the accelerometer housing shorting.the detectors and power supply. Attempts made to repair the traixial accelerometer were unsuccessful.

The source of water is believed to have been a flood in the BCIC room that occurred prior to the date 'of inoperability.

Corrective Action: ,3 .

Three of four triaxial accelerometers remain operable. .These are located on the Unit 2 containment foundation,. Unit,2 r,efueling floor, and the E-3 emergency diesel generator roon' -; '

1. .

A replacer.ent detector for the RCIC room is expected from the manufacturer within a month. Installation and return to service is' expected by August 31, 1982.

Very truly yours,

^

C ,_

7 W. T. Ullrich

{$S7$$$8o !Eo[g Station Superintendent f7) r 3r- i

. - - - - - - - - _ - _ _ , _ _ _ - . ._ -. _ _ .