ML20052F728
| ML20052F728 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 05/04/1982 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20052F725 | List: |
| References | |
| NUDOCS 8205130511 | |
| Download: ML20052F728 (3) | |
Text
UNITED STATES 3
NUCLEAR REGULATORY COMMISSION n
>E WASHINGTON, D. C. 20555
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SAFETY EVALUATION AND ENVIRONMENTAL IMPACT APPRAISAL BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDMENT NOS. 69 AND 52 TO FACILITY OPERATING LICENSES NOS. DPR-53 AND DPR-69 BALTIMORE GAS AND ELECTRIC COMPANY CALVERT CLIFFS NUCLEAR POWER PLANT UNIT NOS. 1 & 2 DOCKET NOS. 50-317 AND 50-318 Introduction
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By application dated October 30, 1981, the Baltimore Gas and Electric Conpany (BG&E) requested a change to the Technical Specifications (TSs) for Calvert
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Cliffs Units.1 and 2.
The proposed change to TS 5.6.4 would increase the maximum allowable number of fuel assemblies in the fuel storage pool from 1760 to 1830.
Discussion On September 19, 1980, the NRC issued License Amendments 47 and 30 for Calvert Cliffs Units 1 and 2, respectively. These license amendments provided NRC approval of BG&E's high-density spent fuel storage design for'Calvert Cliffs Units 1 and 2.
The maximum spent fSel storage capacity, established at that time, was 1760 fuel assemblies, as stated in TS 5.6.4.
During the NRC review of the spent fuel storage rack design, BG&E submitted information supporting i
the storage of 1830 fuel assemblies.
The request to consider the storage of 1830 fuel assemblies, rather than 1760 fuel assemblies, was subsequently withdrawn by letter dated May 20, 1980.
In issuing Amendments 47 and 30, the NRC indicated that the associated Safety Evaluation and Environmental
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Impact Appraisal were prepared considering 1830 fuel assemblie's ex~ cept for the structure analysis review which was based on 1760 fuel storage positions.
By application dated October 30, 1981, BG8E reinstated its request to allow i
storage of 1830 fuel assemblies at Calvert Cliffs Units 1 and 2.
l The increase in spent fuel storage capacity, from 1760 to 1830 fuel assemblies, is achieved by a modification to the storage rack module configuration for l
the Unit 2 " South" fuel storage pool.
The modification involves replacement
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of two 8 X 10 and one 7 X 10 litorage modules with three 10 X 10 storage modules., No actual replacement is required since the high density spent fuel storage racks have not yet been installed.
This modification will i
place storage modules over the South cask set-down area which became inacces-sible as a result of the high density spent fuel rack module orientation.
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8205130511 020504 PDR ADOCK 05000317 P
The design, fabrication, and installation of the three additional spent fuel storage modules will be as addressed in Amendments 47 and 30.
The spent fuel pool will require modification since the cask set-down area -
and an adjacent trough area are presently at an elevation 2.0 and 1.5 feet below the spent fuel pool floor, respectively.
As indicated in BG&E's letter of January 4,1982, the cask set-down and trough area will be raised to the fuel storage pool floor elevation by using a free-standing structural steel insert.
The insert will:
meet the compression capacity of the existing fuel storage pool floor, be designed and fabricated to be compatible with the fuel storage pool environment and to meet all seismic Class I requirements, and be designed, fabricated, and installed so as to maintain the integrity of the fuel storage pool liner plate.
With regard to the structural analysis, the spent fuel pool structure was re-evaluated by the licensee based on the increased loads caused by the new high density spent fuel storage racks using ACI-318-63 Code " Building Code Requirements for Reinforced Concrete," with the factored loads speci-fied in Standard Review Plan 3.8.4.
By letter dated April 12, 1982, the licensee indicated, for 1830 fuel assemblies, the calculated ~ stresses at critical sections are within the allowable stresses specified in the FSAR.
Based upon the above information we find that the storage of 1830 fuel assemblies at Calvert Cliffs Units 1 and 2 is within the bounds of the safety and environmental considerations addressed in Amendments 47 and 30.
Accordingly, no previously unreviewed safety or environmental concerns are related to the storage of 1830 fuel assemblies at Calvert Cliffs Units 1 and 2.
It is appropriate, therefore, to amend TS 5.6.4 to increase the maximum allowable number of fuel assemblies in the fuel storage pool from 1760 to 1830 fuel assemblies.
Environmental Impact Appraisal The Environmental Impact Appraisal (EIA), dated September 19,.1980, issued in support of License Amendments 47 and 30, considered the environmental impact associated with the storage of 1830 fuel assemblies in the spent fuel pools of Calvert Cliffs Units 1 and 2.
The September 19, 1980 EIA concluded that,
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"We have determined that the proposed license amendment will not signifi-cantly affect the quality of the human environment and that there will be no significant environmental impact attributed to the proposed ' action other than that which has already been predicted and described in the Final Environmental Statement for CCNPP dated April 1973. Therefore, the staff has found that an environmental impact statement need not be prepared, and' that pursuant to 10 CFR 51.5(c), the issuance of a negative declaration to this effect is appropriate."
Since we have not authorized a fuel storage limit in excess of 1830 fuel assemblies in the Calvert Clifs Units 1 and 2 fuel storage pool, the above conclusion is still valid and is herein reaffirmed.
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 this amendment will not be inimical to the common defense and security or to the health and safety of the public.
Date:
May 4, 1982 Principal Contributor:
D.H. Jaffe e
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