ML19322B419
| ML19322B419 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 10/31/1975 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19322B414 | List: |
| References | |
| NUDOCS 7912020267 | |
| Download: ML19322B419 (2) | |
Text
,
h P00R OMINAL UNITED STATES NUCLEAR REGULATORY CO' MISSION
(
DOCKET NOS. 50-260, 50-270, AND 50-287 f
)
DUKE POWER COMPANY NOTICE OF ISSUANCE OF A'tENDMENTS 'ID FACILITY OPERATING LICENSES Notice is hereby given that the U.S. Nuclear Regulatory Comission (the Comission) has issued Amendments No.13,'13, and l O to Facility ~
Operating Licenses No. DPR-38, DPR-47, and DPR-55, respectively, issued J
to Duke Power Company which revised Technical Specifications for operation of the Oconee Nuclear Station, Units 1, 2, and 3, located in Oconee County, South Carolina. The amendments are effective as of the date of issuance.
'Ihese amendments (1) modify the axial power inbalance limits for the Core Protection Safety Limits and the Reactor Protection System Maxieum Allowable Setpoints, (2) reduce the flux / flow ratio from 1.07 to 0.961 for single-loop operation, and (3) change the maximum thermal power for three-loop operation from 86.0% to 8 4%,
The application for the amendt,ents complies with the standards and requirements of the Atomic Energy Act of 1954, as amended (the Act), and The Commission's rules and regulations. The Comission has made appro.
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priate findings as' required by the Act and the Commission's rules and 3
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. regulations in 10 CFR Chapter I, which are set forth in the license amend-ments. Prior public notice of these amendments is not required since the x
amendmeits do 'not ihvolve La significant h'azards consideration. ~
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, W u. s. oovERNnetMT PRINT 4Ne OFFtCEE 9974 526 908 M i..
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6 NOTICING OF ??.0?OSED LICr;SI';C IOIEND) _ST jPD-72
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Duke Power Ccmpany (Oconee Units 2 and 3)
-t Licensee:
(1) UP ate of core safety limits and RPS flux / flow and d ~
by taking credit for
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Request for:
power imbalance trip setpoints t
core burnup.
(2) A change in the maximum thermal power for 3 pump l
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m. al ~ i m..m u is i o u guatian Ly ag1,.. 3 August 26, 1975 Request Date:
Pre-notice Recc= ended Proposed Action: ( )
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Post-notica Rece=ne=ded 4
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Determination delayed pendin;;
(XX) completion of Saf ety Evaluation (1jThe core offset limits used to develon the existine core safety limits and the RPS flux / flow and power imbalance Basis for Decision:
i trip setpoints were established by the " worst case peak ng
~~d~uring core life, including beginning-of-life (BOL) power
'Ihe proposed core safety limits and RPS flux /
peaking.
lor 110w anc power imoalance trip setpoints taxe creoit core burnup which decreases the BOL power peaking and The l esults in less restrictive core offset limits.
proposed RPS power imbalance trip setpoints are add based on a more restrictive out-of-core to incore of correlation than the one used in establishing the existing trip setpoints.
The nronosed reduction of the ' flux / flow ratio' fro 0.961 for single loop operation is necessitated by the revision in power imbalance limits so that adequate margin is provided from the revised imbalance safety limits.
This reduction of the flux / flaw ratio results in more 1or reactor power ana 110w conservative trip setpoints combinations for single loop operation.
DATE:
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CONCIIRRENCES:
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