ML19253D011
| ML19253D011 | |
| Person / Time | |
|---|---|
| Site: | Seabrook  |
| Issue date: | 10/19/1979 |
| From: | Devincentis J PUBLIC SERVICE CO. OF NEW HAMPSHIRE |
| To: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| IEB-79-23, NUDOCS 7912120513 | |
| Download: ML19253D011 (1) | |
Text
M Ug pusuC SERVICE Companyof New Hampshre SEABROOK STATION Engineering Office:
20 Turnpike Road Westborough, MA 01581 October 19, 1979 SBN-102 T.F. B 4.2.5 U.S. Nuclear Regulatory Commission Region I 631 Park Avenue King of Prussia, Pennsylvania 19406 Attention: Office of Inspection and Enforcement
Reference:
1.
Docket No. 50-443 and 50-444 2.
NRC letter dated September 12, 1979 3.
Subject:
Potential Failure of Emergency Diesel Generator Field Exciter Transformer
Dear Sir:
We have the following responses to the above referenced IE Bulletin:
1.
The circuitry of the diesel generators purchased for Seabrook Station has been examined and it has been determined that no connection exists between the primary windings at the excitation power transformer and the neutral of the generator.
2.
Each diesel generator will be tested for 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> at the full load rating and 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at the short time rating as part of the preoperational testing program in order to meet the requirements of Regulatory Guide 1.108.
We trust this information will be sar$3 factory.
Vei, truly yours,
/
E :.cLO '/
f; c,S -
i John DeVincentis Project Manager DAM:tla cc:
B.B. Beckley 5/.0 289 J.H. Herrin 7 912120 $/$