ML20040H419
| ML20040H419 | |
| Person / Time | |
|---|---|
| Site: | Ginna  |
| Issue date: | 02/04/1982 |
| From: | Snow B ROCHESTER GAS & ELECTRIC CORP. |
| To: | Haynes R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| RO-82-006, RO-82-6, NUDOCS 8202180232 | |
| Download: ML20040H419 (1) | |
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ROCHESTER GAS AND ELECTRIC CORPORATION
- 89 EAST AVENUE, ROCHESTER, N.Y.14649 Ginna Station February 4, 1982
,, jg gy.og Mr. Ronald C. Haynes s
U.S. Nuclear Regulatory Commission ff S
Office of Inspection and Enforcement RECEIVED Region I
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631 Park Avenue Os FEBI 71982 n- :4 King of Prussia, PA. 19406
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Subject:
LER 82-006 Inadvertent RCS Dilution Technical Specification Section 3.6.lc g
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Dear Mr. Haynes:
This is to confirm a phone call from Mr. Dewey Horning, Ginna Shift Supervisor, to your Duty Officer on February 4,1982 at 0310 hours0.00359 days <br />0.0861 hours <br />5.125661e-4 weeks <br />1.17955e-4 months <br />.
This event is reportable in accordance with Technical Specifica-tion Section 6 9 2a (2) " operation in a degraded mode less con-servative than the least conservative limiting condition for operation;" 6.4.2a (4) "... if suberitical, an unplanned reactiv-ity insertion of more than 0.5%
K/K;" and Technical Specifica-tion Section 3.6.lc which states: " Positive reactivity changes shall not be made by rod drive motion or boron dilution whenever containment ic.tegrity is not intact unless the boron concentra-tion is greater than 2,000 ppm".
At approximately 2330 hours0.027 days <br />0.647 hours <br />0.00385 weeks <br />8.86565e-4 months <br /> on February 3, 1982, and contrary to the above, the Reactor Coolant System (RCS) was inadvertently diluted during the performance of T 7P, " Filling and Purge of
'B' Steam Generator" (S/0).
As a result of a procedural inadequacy, only one end of the leaky steam generator tube was plugged and the subsequent transfer of water (
2,300 cals) diluted the RCS fron 1900 ppm to 1684 ppn.
The open end of the S/G tube was plugged and the dilution termin-ated by approximately 0230 hours0.00266 days <br />0.0639 hours <br />3.80291e-4 weeks <br />8.7515e-5 months <br />.
The shutdown margin wa's saintained above 10% during the event.
- c. ;
Bruce A.
Snow Superintendent BAS /nh xc:
John E. Maier Lee S. Lang CAR - 1354 File Roy Zimmerman 8202180232 820204 PDR ADOCK 05D00244 639 S
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