ML19261F295
| ML19261F295 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 01/06/1978 |
| From: | Ohanlon J METROPOLITAN EDISON CO. |
| To: | |
| References | |
| NUDOCS 7910250749 | |
| Download: ML19261F295 (1) | |
Text
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METROPOLITAN EDISON COMPANY sussrounvorcentur.rveucunima conronnos CST OFFICE BOX 480 MfDOLETOWN. PENNSYLVANIA 17057 TELEPHONE 717.N4 4041 January 6. 1978
~~
Mr. Boyce H. Grier Directorate of Regulatory Operations Region I Nuclear Regulatory Commission 631 Park Avenue King of Prussia. Pennsylvania 19406 Operating License DPR-50 Docket 50-289
Subject:
Reportable Occurrence No. 78-01/IP
Dear Mr. Grier:
This telegram is to confirm the jelecon between Mr. P. J. Kellogg, Region I NRC, and Mr. J. P..O'Hanlon. Unit I Superintendent, at 1130 hours0.0131 days <br />0.314 hours <br />0.00187 weeks <br />4.29965e-4 months <br /> on 6 January 1978.
This item is considered potentially reportable in accordance with Technical Spec i fica tion -4.9.2. A.9.
Metropolitan Edisoh has been nformed by the THI-l NSSS vendor, Babcock and Wilcox, that during certain plant transients. the difference between the out-of-core detectors and the heat balance may exceed four percent full power.
The maximum difference assumed in the Safejy Analysis is four percent.
THI-l has increased the frequency of heat balance checks to insure that the diffarence between the out-of-core detectors and the heat balance is less than two percent full power.
Technical Specification Table 4.1-1 requires recalibration of the out-of-core detectors if indicated power differs from heat balance power by more than two percent full power.
Further corrective action will be discussed in the followup report.
\\AO "1g6 Very truly yours, pg
. P. O'Hanlon
\\,
Unit,I, Superintendent K
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