ML20212J052
| ML20212J052 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 03/02/1987 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20212J041 | List: |
| References | |
| NUDOCS 8703060292 | |
| Download: ML20212J052 (2) | |
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UNITED STATES y
7, NUCLEAR REGULATORY COMMISSION 74 ij WASHINGTON, D. C. 20555
%,...../ SAFETY EVALUATIOP BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 7 TO FACILITY OPERATING LICENSE NO. NPF-43 DETROIT EDISON COMPANY WOLVERINE POWER SUPPLY COOPERATIVE, INCORPORATED l
FERMI-2 DOCKET NO. 50-341
1.0 INTRODUCTION
Ry letter dated October 24, 1986, the licensee proposed to eliminate the radwaste and turbine building exhaust radiation monitor signals with respect to the control room HVAC system.
Presently, in accordance with Technical Specification Sections (TS) 3/4.7.2 and 4.7.2.e.2, these signals are two of several that are used to place the HVAC system in an emergency mode when high radiation is indicated. This evaluation deals with the acceptability of the proposed TS change.
2.0 EVALUATION The staff's acceptance of the Femi-2 control room HVAC design with respect to General. Design Criterion (GDC) 19 is based, in part, on the provision of an adequate means of signaling and actuating the control room emergency ventilation mode. Specifically, the staff found that signals from the control room outside air radiation monitors, as well as the reactor protec-tion signals, are sufficient to initiate the control room HVAC emergency ventilation mode, such that the dose guidelines of GDC 19 are met with respect to all design basis airborne radioactivity release accidents, including the LOCA.
The additional emergency ventilation signals, as listed in Technical Speciff-cation 3/4.7.2, are not necessary to meet GDC 19 requirements and, hence, represent signals of marginal importance.
However, the radiation monitors in the radwaste and turbine buildings have generated spurious signals which have initiated the control room HVAC emergency ventilation mode unnecessarily.
The proposed elimination of these signals does not affect the protection of the control room operators against the potential radiation releases from the radwaste and turbine buildings. As indicated above, the staff's findings are that reliance on control room air intake and reactor protection signals is sufficient with respect to meeting GDC 19 recuirements. On this basis, the staff concludes that the proposed TS change is acceptable. The licensee has committed to retaining the exhaust vent monitors for these buildings, such that any radiation release exceeding TS limits will still isolate these buildings automatically.
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3.0 ENVIRONMENTAL CONSIDERATION
This amendment involves a change in the use of a facility component located within the restricted area as defined in 10 CFR Part 20 and changes in sur-veillance requirements. The staff has determined that this amendment in-volves no significant increase in the amounts, and no significant change in the types, of any effluents which may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure. The Comission has previously issued a proposed finding that this amendment involves no significant hazards consideration and there has been no public coment on such finding. Accordingly, this amendment meets the elioibility criteria for categorical exclusion set forth in 10CFR51.22(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 this amendment.
4.0 CONCLUSION
The Commission made a proposed determination that the amendment involves no significant hazards consideration which was published in the FEDERAL REGISTER (51 FR 41850) on November 19, 1986, and consulted with' the state of Michigan. No public comments were received, and the state of Michigan did not have any coments.
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 Comission's regula-tions and the issuance of this amande.ent will not be inimical to the comon defense and security or to the health anri safety of the public.
Principal Contributor:
J. Levine, NRR Dated:
March 2,1987 l
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