ML17319B554
| ML17319B554 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 09/09/1982 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17319B553 | List: |
| References | |
| NUDOCS 8210050544 | |
| Download: ML17319B554 (2) | |
Text
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0i+C o'tp*y4 UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 59 TO FACILITY OPERATING LICENSE NO.
DPR-58 AND AMENDMENT NO. 42 TO FACILITY OPERATING LICENSE NO.
DPR>>74 INDIANA AND MICHIGAN ELECTRIC COMPANY DONALD C.
COOK PLANT UNIT NOS.
1 AND 2 DOCKET NOS.
50-315 AND 50-316 Introduction By lette~ dated July 13, 1982, the Ind'kana and Michigan Electric Company (the licensee) proposed changes to the Technical Specifications appended to Facility Operating License
Cook Nuclear Power Plant Unit Nos.
1 and 2.
The proposed changes reflect the addition or replacement of containment isolation valves to improve operations, and will not be effective until after the 1982 refueling outages for Units 1
and 2.
The acceptability of these changes from a safety standpoint are discussed below.
Discussion and Evaluation Indiana and Michigan Electric Company has proposed revision of Technical Specifications to change the list of containment isolation valves in Table 3.6-1 to reflect installation of valves made during the 1982 refueling outages as follows:
l.
Three valves have been added to reflect installation of the post-accident monitoring system required by Item II'.F,l of NUREG-0737, 2.
Fourteen check valves in the non-essential service water system have been replaced with valves of superior closing characteristics.
3.
Six valves have been added to reflect installation of the post-accident sampling system required by Item II.B.3 of NUREG-0737.
4.
Locked closed manaul valves on the demineralized water supply for the refueling cavity were replaced with remote air operated valves.
The manual valves were replaced in order to remove the administrative controls on the demineralized water system.
Previously, the system was required to 8210050544 820909 PDR ADOCK 05000315 P
be isolated through the employment of locked closed manual valves prior to the reactor coolant system entering mode 4 (Hot Shutdown).
With the installation of the automatic isolation valves, the capability of containment isolation prior to entering mode 4 is demonstrated, allowing the use of demineralized water inside containment during modes 1, 2, 3," and 4.
This valve replacment will enab'ie a more expedious plant recovery and will thereby reduce plant downtime.
Me have reviewed the proposed changes to Table 3.6-1 and conclude that the modifications are acceptable.
Environmental Consideration We have 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 enviroanenta1 impact.
Having made this determination, we have further concluded Chat the amendments involve an action which is insignificant frcm the standpoint of environmental impact and, pursuant to 10 CFR
$51.5(d)(4)
> that an environmental impact statement or negative declaration and environ-mental impact appraisal need not be prepared in connection with the issuance of these amendments.
Conclusion We have concluded, based on the considerations discussed above, that:
(1) because the amendments do not involve a significant increase in the probability or consequences of an accident previously evaluated, do not create the possibility of an accident of a type different from any evaluated previously, and do not involve a significant reduction in a margin of safety, the amendments do not involve a significant hazards consideration, (2) there is r easonable assurance that the health and safety of the public will not be endangered by operation in the proposed
- manner, and (3) such activities will be conducted in compliance with the Commiss'ion's regulations and the issuance of the amendments will not be inimical to the common defense and security or to the health and safety of the public.
Dated:
September 9,
1982 Principal Contributors:
P.
Hearn R. Cilimberg