ML20084A194
| ML20084A194 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 01/04/1974 |
| From: | Cobean W CONSOLIDATED EDISON CO. OF NEW YORK, INC. |
| To: | Oleary J US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084A196 | List: |
| References | |
| AO-3-2-18, NUDOCS 8304050124 | |
| Download: ML20084A194 (2) | |
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gW Consolidated Edison Company of New York. Inc.
h dE 4 (rving Place, New York, N Y 10003 December 21, 1973
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Re Indian Point Unit No. 2 j
Facility Operating License DPR-26 A.O. 3-2-18 Mr. James P. O'Reilly, Director Regulatory Operations, Region I U. S. Atomic Energy Commission j
,631 Park Avenue
, King of Prussia, Pennsylvania 19406',
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Dear Mr. O'Reilly,
l The following report of Abnormal Occurrence No. 3-2-18 is provided pursuant to the requirements of Section 6.12.2(a) of che Technical specifications to Facility Operating License No. DPR-26.
On Deceinber 19, 1973 an analysis of the results of monthly periodic testo and calibration checks relating to pressurizer pressure indicated that the setting for one of the three bi-stables associated with low pressurizer pressure safety injec-tion was slightly below that required by Item 3 in Table 3-l~of the Technical Specifications.
At the time of these periodic tests and calibration checks the reactor was in the cold shut-down condition for maintenance work associated with repairs to the feedwater piping for No. 22 steam generator.
l This particular bistable device is part of a two out'of three logic system which provides for a safety injection signal on coincidence of low pressurizer pressure and low pressurizer level.
The-setpoint was found at 1680 psig instead of 11700-L psig as required by the Technical Specifications.
The other two biotabica of the cyntem were found to be operating correctly.
l The channel annociated with this device was recalibrated and re-tested saticfactorily.
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Mr. James P. O'Reilly 2-December 21, 1973 As indicated in the December 18, 1973 report of Abnomal Occurrence No. 3-2-17, our Engineering Department is perform-ing a detailed analysis relating to instrument drift which we also feel was the cause of this discrepancy.
Our report on this occurrence will cover the current status of that analy-cis.
Mr. Bert Davis of your office was notified of this occur-rence by Mr. John Me.kepeace by telephone on December 19, 1973.
very truly yours,
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Warren R. Cobean, Jr.
M'anager, Nuclear Power G'eneration cc Mr. John F. O' Leary l
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