ML15113A171
| ML15113A171 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 06/24/1985 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML15113A170 | List: |
| References | |
| NUDOCS 8507260167 | |
| Download: ML15113A171 (2) | |
Text
R UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO. 140 TO FACILITY OPERATING LICENSE NO. DPR-38 AMENDMENT NO. 140 TO FACILITY OPERATING LICENSE NO. DPR-47 AMENDMENT NO. 137 TO FACILITY OPERATING LICENSE NO. DPR-55 DUKE POWER COMPANY OCONEE NUCLEAR STATION, UNITS NOS. 1, 2, AND 3 DOCKETS NOS. 50-269, 50-270 AND 50-287 1.0 Introduction By letter dated April 30, 1984, Duke Power Company (the licensee) proposed changes to the Technical Specifications (TSs) of Facility Operating Licenses Nos. DPR-38, DPR-47, and DPR-55 for the Oconee Nuclear Station, Units Nos. 1, 2, and 3. These amendments would consist of changes to the Station's common TSs. Other changes requested in the April 30, 1984, submittal have been addressed by separate Safety Evaluation and approved by license Amendments Nos. 133, 133 and 130 dated January 9, 1985.
The amendments would authorize proposed changes to the TSs by revising TS 3.10.6 and its associated Bases to incorporate monitoring and control limits of hydrogen concentration in the Waste Gas Holdup Tanks. TS 3.10.6 and Item 13 of Table 4.1-3 (Minimum Sampling Frequency and Analysis Program) are being revised to document existing administrative control limits and sampling frequency for hydrogen concentration in the Waste Gas Holdup Tanks.
These proposed changes are being submitted in response to a January 16, 1984 NRC Safety Evaluation which discussed the present Oconee Nuclear Station waste gas system operation and existing program and found it acceptable pending 1) completion of waste gas studies associated with the issue of explosive gas limitations and monitoring system and 2) receipt of proposed TSs addressing this issue.
As discussed in the January 16, 1984 Safety Evaluation, which incorporates the radiological effluent TSs (RETS), the objective of the RETS with regard to explosive gas mixtures is to prevent hydrogen explosions in the waste gas systems. In an August 18-19, 1982 meeting, the licensee's and the NRC's staffs agreed that the issue of explosive gas limitations and monitoring will be deferred and handled as a separate issue following completion of the ongoing Duke and NRC studies of system requirements. Pending completion of these studies, the licensee was required and committed to submit proposed TSs addressing explosive gas limitations and monitoring within 90 days of receipt of the RETS amendment.
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-2 2.0 Evaluation We have reviewed the TSs on explosive gas limitations and monitoring provided in the April 30, 1984 submittal.
We find that these TSs are acceptable on an interim basis pending completion of the Duke Waste Gas Study, and until a final, formal policy on explosive gas monitoring has been established by the NRC. As emphasized in the NRC's January 16, 1984 letter to the licensee, the licensee is encouraged to exert every effort possible to complete the remaining evaluations associated with the.Waste Gas Study and to forward the submittal to us at the earliest opportunity, as agreed to in the August 18-19, 1982 meeting.
3.0 Environmental Consideration These amendments involve a change in the installation or use of a facility component located within the restricted area as defined in 10 CFR Part 20 and in a surveillance requirement. We have determined that the amendments involve no significant increase in the amounts, and no significant change in the types, of any effluents that may be released offsite, and that there is no significant increase in individual or cumulative occupational radiation exposure. The Commission has previously issued a proposed finding that these 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 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.
4.0 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:
June 24, 1985 Principal Contributor: W. Meinke