ML17195A127
| ML17195A127 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities, 05000000 |
| Issue date: | 02/24/1984 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17195A126 | List: |
| References | |
| NUDOCS 8402280531 | |
| Download: ML17195A127 (2) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 81 TO PROVISIONAL OPERATING LICENSE NO. DPR-19 AMENDMENT NO~ 73 TO FACILITY OPERATING LICENSE NO. DPR-25 AMENDMENT NO. 87 TO FACILITY OPERATING LICENSE NO. DPR-29 AMENDMENT NO. 82 TO FACILITY OPERATING LICENSE NO. DPR-30 COMMONWEALTH EDISON COMPANY AND IOWA-ILLINOIS GAS AND ELECTRIC COMPANY DOCKET NOS. 50-237, 50-249, 50-254, AND 50-265
1.0 INTRODUCTION
On January 12, 1982, Commonwealth Edison Company (CECo) proposed amendments to Appendix A of Operating Licenses DPR-19, DPR-25, DPR-29, and DPR-30.
The proposal requested a change to a.Limiting Condition for Operation (LCO) concerning safety and relief valve position indications.
The present LCO, proposed in fulfillment of TMI-2 lessons learned Category A requirements, prohibited plant startup from a shutdown condition unless all position indication is operable.
The change requested is a modification of the LCO to require the restoration of all inoperable position indication prior to startup only if the reactor is in a cold shutdown condition for more than seventy-two hours.*
A Notice of Consideration of Issuance of Amendments to Licenses and Proposed No Significant Hazards Consideration Determination and Opportunity for Hearing related to the requested action was published in the Federal Register on November 22, 1983 (48 FR 52807).
No request for hearing was received and no comments were received.
- 2. 0 EVALUATION There are two methods of position indication (thermocouples and acoustical monitors) available for use on each safety or safety/relief valve. Continued operation without restriction is presently allowed if one indication becomes inoperable.
If both become inoperable on one or more valves and indication cannot be restored within thirty days, the reactor must be brought to cold shutdown within twenty-four hours and indication restored.
In imposing the present requirements, it was the staff's intent to provide assurance that, since the indication provides no direct safety function, it would generally be available.
The staff believes that the thirty-day requirement meets
- this intent and, therefore, that the present requirement to restore all position indication during all outages, no matter how short, is overly restrictive since it could cause extensions of short-term outages associated with scram recoveries and minor maintenance.
The proposed change to position indication restoration applies only if the reactor is in cold shutdown for more than seventy-two hours.
This is acceptable to the staff.
3.0 ENVIRONMENTAL CONSIDERATION
The staff has determined that the amendments do not authorize a change in effluent types or total amounts nor an increase in power level and will not result in any significant environmental impact.
Having made this determina-tion, the staff further concludes that the amendments involve an action which is insignificant from the standpoint of environmental impact and, pursuant to 10 CFR 51.5(d)(4), that an environmental impact statement, or negative declaration and environmental impact appraisal, need not be prepared in connection with the issuance of these amendm~nts.
- 4. 0 CONCLUSION The staff has concluded, based on the considerations discussed above, that:
. (1) there is reasonable assurance that the health and safety of the public will not be endangered by operation in the proposed manner; and (2) such activities will be conducted in compliance with the Commission's regulations and the issuance of these amendments will not be inimical to the common defense and security or to the health and safety of the public.
5.0 ACKNOWLEDGEMENT This evaluation was prepared by R. Gilbert *
. Dated:
February 24, 1984