ML20136H433

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Ro:On 851023,Channel B Containment high-range Radiation Monitor Inoperable Due to Damaged Panel Selector Switch. Switch Repaired & Returned to Svc on 851109.Channel a Remained Operable.Alternate Monitoring Method Employed
ML20136H433
Person / Time
Site: Calvert Cliffs Constellation icon.png
Issue date: 11/15/1985
From: Russell L
BALTIMORE GAS & ELECTRIC CO.
To:
NRC OFFICE OF ADMINISTRATION (ADM)
References
NUDOCS 8511250108
Download: ML20136H433 (1)


Text

k BALTIMORE G AS AND ELECTRIC COMPANY P.O. BO X 14 7 5 B ALTIMOR E. M AR YLA N D 21203 HUCLEAR POWER DEPARTMENT COLVERT CLIFFS NUCLEAR POWER PL ANT LUSBY, MARYLAND 20657 November 15,1985 U. S. Regulatory Commission Document Control Desk Washington, D. C. 20555

SUBJECT:

Inoperable Calvert Cliffs Unit 1 Containment Area High Range Radiation Monitor

Reference:

Technical Specification 3.3.3.1

Dear Sirs:

On October 23, 1985, the Channel B Containment High Range Radiation Monitor was declaced inoperable and Action Statement 3.3.3.1b was entered.

The action required by 3.3.3.1b, if the System operability cannot be restored in l

seven days, is to prepare and submit a special report to the Commission, pursuant to Technical Specification 6.9.2.

The reason for the inoperability of the Channel B Containment Area High Range Radiation Monitor was a damaged panel selector switch. The switch was repaired and the channel returned to service on November 9,1985. Channel A remained operable throughout this time period.

As required by Technical Specification 3.3.3.lb, during the seventeen days the System was inoperable, the preplanned alternate method of monitoring was in effect.

This alternate method is covered in the Calvert Cliffs Emergency Response Plan Implementation Procedures.

Very truly yours, L%\\

L. B. Russell Plant Superintendent i

LBR:RBS:fid cc:

Dr. Thomas E. Murley Director, Office of Management Information and Program Control Messrs:

A. E. Lundvall J. A. Tiernan W. J. Lippold

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851**290108 851115 PDP

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