ML20203L562
| ML20203L562 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/15/1986 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML20203L554 | List: |
| References | |
| NUDOCS 8608280029 | |
| Download: ML20203L562 (3) | |
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![euc UNITED STATES NUCLEAR REGULATORY COMMISSION n
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SAFETY EVALUATION BY THE OFFICE OF NUCLEAR REACTOR REGULATION SUPPORTING AMENDPENT N0. 96 TO FACILITY OPERATING LICENSE NO. DPR-29
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AND AMENDMENT NO. 92 TO FACILITY OPERATING LICENSE NO. DPR-30 COMMONWEALTH EDISON COMPANY A,((
IOWA-ILLINDIS GAS AND ELECTRIC COMPANY OUAD CITIES NUCLEAR POWER STATION,llNITS 1 AND 2 DOCVET NOS. 50-254/265
1.0 INTRODUCTION
By letter dated November 1,1982, Corinonwealth Edison Company (the licensee) proposed amendments to Appendix A, the Technical Specifications (TS), for Facility Operating License Nos. DPR-29 and DPR-30 of the Ouad Cities Station, Units 1 and 2.
The proposal would change the Containment System limiting Condition for Operations (LC0) for the drywell oxygen concentration during startup and operational modes from five weiqht percent to four volume percent and the LC0 bases to anree with the above chances. The proposal would also delete TS Section 3.7/4.7.A.5.c.
2.0 EVALUATION In its submittal of November 1, 1982, the licensee proposed to chance the drywell oxygen concentration limit from five weicht percent to four volume percent. This change was nroposed to maintain consistency between TS and a licensee analyses, submitted to NRC September 15, 1982, concerning combustible nas control for both the Quad Cities and Dresden facilities (this analyses concluded that these facilities rely on nitrogen inerting as the primary neans of combustible cas control) and to change the TS oxygen concentration units to the same units (volume percent) as those provided by the Containment Oxygen Analyzer. The change concerns TS Sections 3.7/4.7 A.S.'a and b, Pages 3.7/4.7-6 and 6a, Containment Systems LCO, and Section A of the LCO Bases on Page 3.7/4.7-13.
The staff has reviewed this change and acrees that the LC0 change from five percent by weight (approximately 4.5 percent by volume) to 4.0 volume percent is a more conservative oxygen concentration limit and aorees with the concentration limit promulgated by Standard Technical Specifications (STS), NUREG-0123, Revision 3.
It is also well within the oxygen concentration limit of Regulatory Guide 1.7, Revision 2, which requires the oxygen concentration to be less than five volume percent when the hydrogen concentration could exceed six volume percent. Therefore, the staff finds this chance to be acceptable.
8608280029 860815 DR ADOCK 0500 4
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' A temporary TS condition, effective during the interval January 14 to January 21, 1979, has been deleted from the Unit 1 TS. The time during which the condition was effective has lona since passed, so the condition should be deleted from the current TS.
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3.0 ENVIRONMENTAL CONSIDERATION
These amendments involve changes to a reouirement w,th res3ect to the installation or use of a facility component locatea within the restricted area as defined in 10 CFR Part 20. The staff has determined that the amendments involve no sianificant increase in the amounts, and no sianificant 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 exoosure. The Commission has previously issued a proposed findine that these anendments involve no sianificant hazards consideration and there has been no public comment on such findina. Accordingly, these amendments meet the eligibility criteria for cateaorical exclusion set forth.in 10 CFR 51.22(c)(9). Pursuant to 10 CFR 51.22(b), no environmental impact statenent nor environmental assessnent need be prepared in connection with the issuance of these amendments.
4.0 CONCLUSION
The staff has 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 nor to the health and safety of the public.
Principal Contributor:
K. Ridgway Dated: August 15, 1986 I
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Document Nama:
OC OXYGEN ISS NOTICE Recuestor's ID:
MARIGGIO Author's Name:
R Bevan Document Coments:
I RWD-1 quad cities 1/2 notice of issuance 11/1/82 appl.
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