ML19257D344
| ML19257D344 | |
| Person / Time | |
|---|---|
| Site: | Millstone  |
| Issue date: | 01/11/1980 |
| From: | Ziemann D Office of Nuclear Reactor Regulation |
| To: | Counsil W NORTHEAST NUCLEAR ENERGY CO. |
| References | |
| NUDOCS 8002040167 | |
| Download: ML19257D344 (2) | |
Text
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[f UNITED STATES i
NU AR REGULATORY COMMISSION e
., p WASHINGTON, D. C. 20555
/
January 11, 1980 y
Docket No. 50-245 Mr. W. G. Counsil, Vice President Nuclear Engineering and Operations Northeast Nuclear Energy Company P. O. Box 270 Hartford, Connecticut 06101
Dear Mr. Counsil:
In response to our letter of September 6,1978, you provided information on your 1977 experience of control rods failing to fully insert. We evaluated your response along with those provided by other BWR owners.
We concluded that such events are general and that the frequencies of occurrence vary among the BWRs, apparently because of different maintenance programs.
Our September 6,1978 letter recommended that you maintain an ongoing tabulation of any additional such events. To determine whether or not the frequency of these events has changed for a given plarit, we now request that you report your more recent experience. This report should include the experience from the time of the last reported occurrence through 1979.
In addition, please provide a summary of other control rod drive malfunctions, such as unlatching, for the same time period.
The information should be provided within 90 days.
For each event, identify the number of rods not fully inserted, the positicn of the rods, the cause for failure to fully insert, and any related mainte1ance activities.
This request for additional generic information is in accordance with the GA0 blanket clearance number B-180225 (R0536) which expires June 3C,1981.
Sincerely, fm
- O Dennis L. Ziema
, Chief Operating Reactors Branch #2 Division of Operating Reactc rs cc:
See next page M64 309
"*~ 47
Mr. W. G. Counsil January 11, 1980 cc William H. Cuddy, Esquire Connecticut Energy Agency Day, Berry 5 Howard ATTN: Assistant Director Counselors at Law Research and Policy One Constitution Plaza Devel opment Hartford, Connecticut 06103 Department of Planning and Energy Policy Anthony Z. Roisman 20 Grand Street Natural Resources Defense Council Hartford, Connecticut 06106 91715th Street, N. W.
Washir.gten, D. C.
20005 Director, Technical Assessment Division Northeast Nuclear Energy Company Office of Radiation Programs ATTN: Superintendent (AW-459)
Millstana Dlart U. S. Environmental Protection P. O. Box 128 Agency Waterford, Connecticut 06385 Crystal Mall #2 Arlington, Virginia 20460 Mr. Janes R. Himmelwright Northeast Utilities Service Company U. S. Environnental Protection P. O. Box 270 Agency Ha rtford, Connecticut 06101 Region 1 Office ATTN:
EIS COORDINATOR Resident Inspector JFK Federal Building c/o V. S. NRC Boston, Massachusetts 02203 P. O. Box Drawer KK Niantic, Connecticut 06357 Waterford Public Library Rope Ferry Road, Route 156 Waterford, Connecticut 06385 First Selectman of the Town of Waterford Hall of Records 200 Boston Post Road Waterford, Connecticut 06385 1864 310