ML20134L920
| ML20134L920 | |
| Person / Time | |
|---|---|
| Site: | Surry  |
| Issue date: | 08/26/1985 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20134L487 | List: |
| References | |
| NUDOCS 8509030470 | |
| Download: ML20134L920 (2) | |
Text
-
anag#
,(
0.,,
UNITED STATES y
p, NUCLEAR REGULATORY COMMISSION 5
j WASHINGTON, D. C. 20555
%...../
SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION RELATED TO AMENDMENT NO.102 TO FACILITY OPERATING LICENSE N0. DPR-32 AND AMENDMENT N0.102 TO FACILITY OPERATING LICENSE NO. DPR-37 VIRGINIA ELECTRIC AND POWER COMPANY 1
SURRY POWER STATION, UNIT NOS. 1 AND 2 DOCKET NOS. 50-280 AND 50-281 Introduction By letter dated May 13, 1985, Virginia Electric and Power Company (the licensee) requested amendments to License Nos. DPR-32 and DPR-37 for the Surry Power Station, Units 1 and 2 (Surry 1/2). The proposed change would revise Technical Specification Section 5.3 to modify the description of the fuel assemblies so that reconstituted assemblies may be placed into the core.
Discussion and Evaluation The licensee is pursuing fuel assembly reconstitution as a means to utilize the remaining energy in fuel assemblies which contain a small number of leaking (approximately L-4) fuel rods. The leaking fuel rods will be replaced with dumy rods. Evaluations have been perfomed to verify that fuel rod removal and dumy rod replacement meet all existing fuel assembly design requirements and safety criteria.
Specific areas that were addressed in the evaluation are 1) the reconstitution process, 2) the storage of defective fuel rods, 3) local nuclear peaking resulting from replacement of fuel rods with dummy Zircaloy l
rods, 4) local themal hydraulic effects, and 5-) reload safety limits.
l The dumy rods inserted in place of defective fuel rods do not make a l
significant change to the assembly mechanical characteristics.
Calculations performed to determine the impact of reconstituted fuel assemblies on future core reload analyses indicated minor changes in local power peaking. Core reload designs will explicitly incorporate the impact of any reconstituted assemblies and established design criteria will be followed.
The failed rods will be removed to a fuel rod canister. Thermal-hydraulic i
l evaluations have shown that there will be sufficient cooling within a completely filled canister. Criticality analyses have demonstrated
[
subcriticality in the most reactive configuration.
i 8509030470 850826 DR p
ADOCK 05000280 PDR
. Since the reconstituted fuel assemblies satisfy the same design criteria as the original fuel assemblies and use of the assemblies will not result in a change to existing safety criteria and design limits, we find this Technical Specification change, as submitted by the licensee, to be acceptable.
Environmental Consideration These amendments involve a change in the installation or use of the facilities components located within the restricted areas as defined in 10 CFR 20. The staff has determined that these 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 Sec 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.
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.
o Dated:
August 26, 1985 Principal Contributors:
M. Chatterton J. D. Neighbors T. Chan l
l
__