ML19352A050
| ML19352A050 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 02/05/1981 |
| From: | Office of Nuclear Reactor Regulation |
| To: | COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML19352A051 | List: |
| References | |
| NUDOCS 8102250628 | |
| Download: ML19352A050 (1) | |
Text
7590-01 UNITED STATES OF AMERICA NUCLEAR REGULATORY COMMISSION In the Matter of
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COMMONWEALTH EDISON COMPANY
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Docket No. 50-237 (Dresden Nuclear Power Station, Unit flo. 2)
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ORDER-FOR MODIFICATION OF LICENSE I.
The Cormionwealth Edison Company (licensee) is the holder of Provisional Operating License No. OPR-19 which authorizes the operation of the Dresden Nuclear Pcwer Station, Unit 2, at steady state reactor power levels not in excess of 2527 megawatts (thermal) rated power. The facility consists of a boiling water re, actor located at the licensee's site in Grundy County, Illinois.
II.
During a routine shutdown of Browns Ferry Uni: No. 3 ori June 28, 1980, 76 of 185 control rods failed to fully insert in response to a manual scram from approixmately 30% power. All rods were subsequently inserted within 15 minutes and no reactor damage or hazard to the public occurred. However, the event did cause an in-depth review of the current SWR Control Rod Drive Systems which identified design deficiencies requiring both short and long-term corrective measures. These measures are set forth in the Generic Safety Evaluation Report - BWR SCRAM DISCHARGE SYSTEM, dated December 1,1980, prepared by the NRC staff. One of the deficiencies identified was a failure mode
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