ML20136E407
| ML20136E407 | |
| Person / Time | |
|---|---|
| Site: | Monticello  |
| Issue date: | 10/08/1985 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20136E411 | List: |
| References | |
| NUDOCS 8511210478 | |
| Download: ML20136E407 (2) | |
Text
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REAC SUPPORTING AMENDMENT NO. 34 TO FACILITY OPERATING LICENSE NO. DPR NORTHERN STATES POWER COMPANY MONTICELLO NUCLEAR GENERATING PLANT J
DOCKET NO. 50-263
1.0 INTRODUCTION
By letters dated April 10 and June 16, 1985, Northern States Power their new and spent fuel storage facility.(NSP/the licensee)
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The current Technical Specifications for the Monticello Nuclear Ge Plant specify that the maximum amount of U-235 per linear axial centime of a fuel assembly will be 15.2 grams.
NSP had previously committed to prior to inserting any fuel having greater than 15.2 axial em across the fuel assembly (References 1 and 2).
NSP is contemplating future loadings with fuel assemblies having an enrichment of 2.99 w/o in U-235 which corresponds to 15.28 grams of U-per axial centimeter.
In addition the specification of the U-235 fuel of the burnable poison loadings on the K. of the fu The proposed change specifies the maximum K. of the fuel assembly, t allowing for the effect of the burnable gadolinia poisons to be accounted l
for in the fuel assembly reactivity.
2.0 EVALUATION
[
The Monticello plant is equipped with high density fuel storage racks for i
spent fuel supplied by GE.
satisfies the NRC K The GESTAR-11 approved K. value which or equal to 1.35. bcriteria of less than or equal to 0.95 is less than this value to 1.33 (Exhibit C, Reference 3).yer, GE in a future revision of GE l
fuel assemblies satisfy this K. value and, therefore, are acceptableAll of t l
for which K. must be less than or equal to 1.31new fuel storag i
The satisfied by all GE supplied fuel assemblies and it is acceptable.This value is a above conclusions are valid for GE supplied fuel storage racks and the The assemblies listed in paragraph 3.3.2.1.4 of GESTAR-II.
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... We.have reviewed the information submitted by NSP regarding their request for a change in the Technical Specifications of their fuel assembly storage facility.
The new specification is based on the value of the infinite
- multiplication factor K. instead of the amount of U-235 per axial fuel assembly centimeter, which allows the effects of the burnable poisons to be accounted for irr the assembly reactivity. The new Technical Specifications are in conformance with 'the Standard Review Plan and GESTAR-II which describes the GE reactor fuel applications. The change in the K i
requirement from "less than or equal to 0.90" to "less than or eNIl to 0.95" is acceptable because it is consistent with the Standard Review Plan, Section 9.1.2 (Paragraph III.2.a). The proposed K= values satisfy the NRC limits for K in the storage rack and, hence, the proposed Technical SpecificatioI[ fare acceptable.
3.0 ENVIRONMENTAL CONSIDERATION
S This amendment involves a change in the insta11'ation or use of a facility
- component located within the restricted area as defined in 10 CFR Part 20.
The staff has determined that the 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. cumulative occupational radiation exposure. The Comission has previously issued a proposed finding that this amendment involves no 4
significant hazards consideration and there has been no public coment 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
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 regulations and the issuance of the amendment will not be inimical to the comon defense and security or to the health and safety of the public.
Principal Contributor:
L. Lois Dated: October 8,1985
_ Reference 1.
Letter from D. Musolf, Northern States Power Co., to H. R. Dentor.,
NRC, April 10, 1985.
2.
Letter from D. Musolf, Northern States Power Co., to H. R. Denton, NRC, dated June 14, 1985.
3.
GESTAR-II MEDE-24011-P-A-6, " General Electric Standard Application for
- Reactor Fuels," General Electric,1984.
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