ML17278B066
| ML17278B066 | |
| Person / Time | |
|---|---|
| Site: | Columbia  |
| Issue date: | 10/31/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML17278B065 | List: |
| References | |
| TAC-59793, NUDOCS 8611100354 | |
| Download: ML17278B066 (6) | |
Text
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4***0 UNITED STATES NUCLEAR REGULATORYCOMMlSSION WASHINGTON,D. C. 20555 SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NO.
30 TO FACILITY OPERATING LICENSE NO.
NPF<<21 WASHINGTON PUBLIC POWER SUPPLY SYSTEM WPPSS NUCLEAR PROJECT NO.
2 DOCKET NO. 50-397 2.C INTRODUCTION By letters dated May 30, 1985, and September 30, 1985, the Washington Public Power Supply System proposed certain changes to Section 3/4.6.4 of the Technical Specifications for WNP-2.
EVALUATION 3.0 One of the proposed changes will permit plant operation with two sets (each set consists of dual discs in series) of the nine sets of suppres-sion chamber-to-drywell vacuum breakers inoperable.
However, to allow continued operation, all nine pairs must be verified to be in'the closed position.
This added precaution is to preclude a potential bypass path.
To support this change, the licensee has redone the negative containment pressure calculations that were previously reviewed and found to be acceptable by the staff in the Safety Evaluation Report, NUREG-0892.
The revised analysis assumes two sets of vacuum breakers are not available to relieve the vacuum condition'nstead of the one set assumed in the original analysis.
The results of the new analysis indicate that the resulting pressure differentials (reactor building to drywell, reactor building to wetwell and wetwell to drywell) are all within the design values.
Based on the staff's review of this analysis, the proposed Technical Specification change to permit plant operation with two sets of the nine sets of sup-pression chamber-to-drywell vacuum breakers inoperable is found to be acceptable.
The other requested
- change, a relaxation of the surveillance requirements for the vacuum breakers, continues under review by the NRC staff and is not granted by this amendment.
ENVIRONMENTAL CONSIDERATION This amendment involves a change in the installation and use of a facility component located within the restricted area as defined in 10 CFR Part 20 and changes in surveillance requirements.
The staff has determined that this amendment involves 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 cumula-tive occupational radiation exposure.
The Commission has previously issued Bbi 1100354 ab1031 PDR ADQCK 0500039?
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a proposed finding that this amendment involves no significant hazards consideration and there has been no public comment on such finding.
Accordingly, this amendment meets 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 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 188I) on January 15,
- 1986, and consulted with the state of Washington.
No public comments were received, and the state of Washington did not have any comments.
We have concluded, based on the considerations discussed above, that:
(I} 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 regula-tions and the issuance of this amendment will not be inimical to the common defense and secur ity or to the health and safety of the public.
Principal Contributor:
F. Eltawila, NRR Dated:
October 31, 1986
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AMENDMENT NO. 30 TO FACILITY OPERATING LICENSE NO. NPF-21
-WPPSS NUCLEAR POJECT NO.
2 DISTRIBUTION:
EHylton (1)
EAdensam
- Attorney, OELD CMiles RDiggs JPartlow EJordan BGrimes LHarmon TBarnhart (4)
EBvtcher
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