ML20207E706
| ML20207E706 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 12/30/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20207E703 | List: |
| References | |
| NUDOCS 8701020270 | |
| Download: ML20207E706 (3) | |
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Sa rerug'o UNITED STATES NUCLEAR REGULATORY COMMISSION
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g WASHINGTON, D. C. 20555 L
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SAFETY EVALUATION RY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO.106 TO FACILITY OPERATING LICENSE NO. DPR-66 DUOUESNE LIGHT COMPANY OHIO EDISON COMPANY PENNSYLVANIA POWER COMPANY REAVFP VALLEY POWER STATION, UNIT NO. 1 DOCKET NO. 50-334 INTRODUCTION By application dated November 7, 1986, Duauesne Light Company (the licenseel requested an amendment to the facility operating license for Beaver Valley Power Station, Unit No. 1 (BVPS-1). The proposed amendment would change the expiration date for the Unit 1 Facility Operating License, DPR-66, from June 25, 2010 to January 29, 2016.
DISCUSSION AND EVALUATION Section 103.c of the Atomic Energy Act of 1954 provides that a license is to be issued for a specified period not exceeding 40 years.
10 CFR 50.51 speci-fies that each license will be issued for a fixed period of time not to exceed 40 years from the date of issuance.
10 CFR 50.56 and 10 CFR 50.57 allow the is-suance of an operating license pursuant to 10 CFR 50.51 after the construction of the facility has been substantially completed, in conformity with the con-struction permit, and when other provisions specified in 10 CFR 50.57 are met.
The currently licensed term for the BVPS-1 is 40 years, commencing with the issuance of the construction permit (June 26, 1970). Accounting for the time that was required for plant construction, this represents an effective operating license term of 34 years and 11 months. Consistent with Section 103.c of the Atomic Energy Act and Sections 50.51, 50.56 and 50.57 of the Connission's regulations, the licensee, by its application of November 7, 1985, seeks an extension of the operating license term for BVPS-1 such that the 40-year period of the license would commence from the issuance date of the operating license.
The licensee's request for extension of the operating license is based on the fact that a 40-year service life was considered during the design and construc-tion of the plant. Although this does not mean that some components will not wear out during the plant lifetime, design features were incorporated which maximize the inspectability of structures, systems and equipment. Surveillance and maintenance practices which were implemented in accordance with the ASME 8701020270 861230 PDR ADOCK 05000334 P
. code and the facility Technical Specifications provide assurance that any unexpected degradation in plant equipment will be identified and corrected.
The design of the reactor vessel and its internals considered the effects of 40 years of operation at full power and a comprehensive vessel material surveillance program is maintained in accordance with 10 CFR Part 50, Appendix H.
We have completed our analyses related to the pressurized thermal shock (PTS) rule,10 CFR 50.61, for BVPS-1. By our letter dated August 11, 1986, the licensee was given our review results showing that the most critical weld materials for the reactor vessel meet the criteria of 10 CFR 50.61 by a large margin at the end of the 40-year operatina life (32 effective full power years).
In addition to these calculations, surveillance capsules placed inside the reactor vessel provide a means of monitoring the cumulative effects of power operation.
Aging analyses have been performed for all safety-related electrical equipment in accordance with 10 CFR 50.49, " Environmental Qualification of Electrical Equipment Important to Safety for Nuclear Power Plants," identifying the qualified lifetimes for this equipment. These lifetimes will be incorporated into plant equipment maintenance and replacement practices to ensure that all safetv-related electrical equipment remains qualified and available to perform its safety function regardless of the overall age of the plant (See our letter to the licensee, dated March 7, 1985).
We have discussed, in detail, matters regarding the projected population growth in the Environmental Assessment (letter to the licensee dated December 17, 1986). Therefore, the discussion about population in the Environmental Assessment is incorporated by reference.
Based upon the above, we conclude that extension of the cperating license for BVSP-1 to allow a 40-year service life is consistent with various safety analyses in that all issues associated with plant aging have already been addressed. Accordingly, we find the proposed change to the expiration date of the BVPS-1 Facility Operating License No. DpR-66 to be acceotable.
f ENVIRONMENTAL CONSIDERATION l
A Notice of Issuance of an Environmental Assessment and Finding of No Significant Impact relating to the proposed extension of facility operatina j
license termination dates for the RVPS-1 was published in the Federal Reaister t
on December 23,1986 (51 FR 45971).
CONCLUSION We have concluded, based on the considerations discussed above, that l
(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 this amendment will not l
D be inimical to the common defense and security or to the health and safety of the public.
Dated: December 30, 1986 Principal Contributors:
Peter S. Tam, Project Manager Jaime Guillen, Project Engineer se e g
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