ML17252A882

Letter Concerning a 11/16/1973 Occurrence Regarding Periodic Tests and Calibration Checks Indicating the Setting for 1 of the Bistable Device Was Below the Technical Specification Requirements - Indian Point Unit 2

ML17252A882
Person / Time
Site:	Indian Point
Issue date:	11/19/1973
From:	Cobean W Con Edison, Consolidated Edison Co of New York
To:	O'Reilly J US Atomic Energy Commission (AEC)
References
3-2-16
Download: ML17252A882 (1)

Text

i-----'"'"

-:.".i .

• November *19, .1973 Re: Indian Point Unit No. 2 Facility Operating License DPR-26 A.O. 3-2-16 Mr. *James P. O'Reilly, Director Regulatory Operations, Region I U. s. Atomic Energy Commission 631 Park Avenue K~ng of Prussia, Pennsylvania 19406

Dear Mr. O'Reilly,

The following report of Abnormal Occurrence No. 3-2-16 is provided pursuant to the requirements of Section 6.12.2(a) of the Technical Specificati6ns to Facility Operating License No.

DPR-26.

On November 16, 1973 an analysis of the results of periodic tests and calib~ation checks relating to pressurizer pressure in-dicated that the~setting for one of the three bistables associated with low pressurizer pressure safety irrjection was b~low that re-quired by Item 3 in Table 3-1 of the Technical Specifications.

At the time of these periodic tests and calibration checks the re-actor was in the cold shutdown condition for maintenance work.

The particular bistable device is par~ of a two out of three logic system which provides for a safety injection signal on coin-cidence of low pressurizer pressure and low pressurizer level.

The other two bistables of the system were found to be operating correctly. The channel associated with this device was recali-brated and retested satisfactorily.

Mr. Don.Johnsorr of your office was notified of this occurrence by Mr. John Makepeace by telephone on November 16, 1973.

Very truly yours, w~l-~1l~\ ~- (1 L1~<:1 - * ~

Warren R. Cobean, J .

Manager, Nuclear Po~

Generation cc: Mr. John F.. O'Leary

• .