ML20141E027

Safety Evaluation Supporting Amends 97 & 87 to Licenses DPR-39 & DPR-48,respectivley

ML20141E027
Person / Time
Site:	Zion  File:ZionSolutions icon.png
Issue date:	03/27/1986
From:	Office of Nuclear Reactor Regulation
To:
Shared Package
ML20141E019	List: ML20141E015 ML20141E022 ML20141E027
References
NUDOCS 8604080415
Download: ML20141E027 (2)

Text

'

• 8 UNITED STATES 8 '

c NUCLEAR REGULATORY COMMISSION WASH PJGTON, D. C. 20555

%, a..../

SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO. 97 TO FACILITY OPERATING LICENSE NO. DPR-39 AND AMENDMENT NO. 87 TO FACILITY OPERATING LICENSE NO. DPR-48 COMMONWEALTH EDIS0N COMPANY ZION NUCLEAR POWER STATION, UNITS 1 AND 2 DOCKET NOS. 50-295 AND 50-304 Introduction By letter dated August 8, 1985, Ccrmonwealth Edison Company (CECO) requested an amendment to the Zion Nuclear Power Station, Units 1 and 2 Technical Specifications (TS). The proposed changes (Sections 3.4 and 3.15) resulted from the installation of a degraded grid voltage protection system for Class 1E power systems.

Evaluation By letter dated May 5,1982, CECO proposed a design change to incorporate a second level undervoltage protection system (degraded grid) for emergency buses and also proposed a draft TS. The staff reviewed the proposed design and the draft TS and approved them by letter to Ceco dated June 24, 1982.

The Safety Evaluation attached to that letter contains detailed results of the staff's review. The June 24, 1982 letter can be found in the Comission's Public Document Room located at 1717 H Street, Washington, D.C. It can also be found in the Local Public Document Room located in Zion Benton Library District, 2600 Emmaus Avenue, Zion Illinois 60098.

Based on that approval, CECO installed the degraded grid voltage protection

• system and by letter of August 8, 1985, requested approval of the TS. The staff reviesed the proposed TS and found them identical to the draft previously reviewed anc approved. Therefore, the staff finds the proposed changes acceptable.

Environmental Consideration These amendments involve a chance in the installation or use of the j facilities components located within the restricted areas as defined in 10 CFR 20. The staff has determined that these amendments involve no significant increase in the amounts, and no significant change in the types, I

i 0604080415 860327 PDR ADOCK 05000290 P PDR

i . .

i I

i- of any effluents that may be released offsite and that there is no I

significant increase in individual or cumulative occupational radiation exposure. The Commission has previously issued a proposed finding that thase amendments involve no significant hazards consideration and there has been no public comment on such finding. Accordingly, these amendments meet the eligibility criteria for categorical exclusion set forth in 10 CFR Sec 51.22(c)(9). Pursuant to 10 CFR 51,22(b) no environmental impact statement or environmental assessment need be prepared in connection with the issuance of these amendments.

Conclusion We have 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.

Dated: March 27, 1986 Principal Contributor:

P. Kang i

_ . _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ . _ _ _ . _ _ _ _ _ _ _ _ _ . _ _ _ _ .