ML19345F256
| ML19345F256 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 01/14/1981 |
| From: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| IAL-81-01, IAL-81-1, NUDOCS 8102170042 | |
| Download: ML19345F256 (2) | |
Text
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4 UNITED STATES
'4 NUCLEAR REGULATORY COMMISslON f
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KING OF PRUSSI A. PENNSYLV ANI A 19406 JAN 141C81 Docket No. 50-336 IAL No. 81-01 Dilj n>y,
(
Northeast Nuclear Energy Company N L J
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ATTN: Mr. W. G. Counsil Senior Vice President - Nuclear E
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- r 0 Engineering and Operations
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P. O. Box 270 Hartford, Connecticut 06101 d//
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Gentlemen:
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This is to confirm our understanding, as discussed in telephone conversations between Mr. J. Kelly of your staff and Mr. E. J. Brunner of this office on January 9 and 13,1981, that the plant will not enter any operational mode requiring containment integrity without the concurrence of this office. We understand that your reviews and analyses, necessitated by the event of January 7,1981 whereby reactor fluid was inadvertently introduced into the plant nitrogen supply system, will include the following:
1.
A detemination of the conditions (temperature and pressure] to which No.1 Safety Injection Tank, Nitrogen Supply System piping (and valves),
and Containment Electrical Penetrations were subjected; 2.
An evaluation of the effects of the event including stress and safety analyses of the No.1 Safety Injection Tank and Nitrogen Supply System (and interface with Class 1 systems), and including the performance of physical inspections as necessary; 3.
An analysis of the effects (short and long term) of reactor coolant on the containment electrical penetrations, including effects of temperature and pressure to which they were subjected; 4.
A detemination of actions necessary to prevent cross contamination (radiological and chemical) from nitrogen supply system to other plant l
systems; l
l S.
The performance of insulation resistance testing on a representative sampling of containment electrical penetration conductors; 6.
The performance of local leak rate testing on all containment electrical penetrations; and, l
81021700 9
-~
IAL No. 81-01 2
JAN 141931 7.
A review of your management controls over manipulations of valves, switches and breakers and verification that these apparatus are correctly positioned prior to mode changes and upgrade your management systems where necessary.
We further understand that as the above items are completed, the results, including corrective action where appropriate, will be reported to this office for our review.
If our understanding of your commitment regarding restart is not correct, please advise this office within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of your receipt of this letter.
No reply to this letter is required; however, should you have any questions concerning this matter, please call.
Sincerely.
Bo ce H. Grier Director cc:
J. F. Opeka, System Superintendent, Nuclear Operations E. J. Mroczka, Station Superintendent D. G. Diedrick, Manager of Quality Assurance J. R. Himmelwright, Licensing Safeguards Engineer 1