ML20062H546
| ML20062H546 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 11/21/1990 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19310C948 | List: |
| References | |
| NUDOCS 9012050090 | |
| Download: ML20062H546 (3) | |
Text
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9l PHILADELPHI A ELECTRIC COM PANY-NUCLEAR GROUP HEADQUARTERS 955 65 CHESTERBROOK BLVD.
WAYNE, PA 19087 5691 (tis) eso sooo November 21, 1990 Docket No. 50-277 License No. DPR-44 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555 SUILTECT:
Peach Bottom Atomic Power Station, Unit 2 Qualification Fuel Bundles in Operating Cycle 9
Dear Sirs:
Philadelphia Electric Company plans to load twelve (12) cornercially available qualification fuel bundles (QFBs) into Peath Bottom Unit 2 during the eighth refueling outage scheduled to'begin January 12, 1991.
These consist of four General Electric Company (GE) Gell QFBs, four (4)-ABB Atom, Inc.
(ABB) SVEA-96 QFBs, and four-(4) Advanced Nuclear Fuels Corp.
(ANF) 9X9-9X+'QFBs.
The Gell QFBs are a 9x9 design' featuring l
part length rods, the SVEA-96 QFBs are a 10x10 design featr.*ing a water cross,-and the 9x9-9X+ QFBs are a 9x9 design featuring a large central water channel.
Fuel bundles similar to each of-these designs are currently operating in a domestic Boiling Water Reactor.
The remainder of the reload bundles will be GE9B fuel.
Detailed descriptions of the Gell', ABB SVEA-96, and ANF 9x9-9X+ QFBs are provided in Attachments 1, 4 and 5, respectively.
Figures depicting the fuel rod layout of the QFDs l
including U-235 enrichment and gadolinia distributions are also.
l provided in these Attachments.
Attachments 1 through 3 list the
' major features and design specifications of the Gell, ABB SVEA-96 and~ANF.9x9-9X+ QFBs, respectively.
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i U.S. Nuclear Regulatory Commission November 21, 1990
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Qualification Fuel Bundles in Page 2 Operating Cycle 9 General Electric Company has designed and analyzed the Gell QFBF using NRC approved methods.
The Gell QFBs are designed for, and meet, the same nuclear-thermal-mechanical criteria as standard reload bundles.
Furthermore, licensing analyses will be performed for the Gell QFBs specifically for operation during Cycle 9 and subsequent cycles wherein the effect of the four QFBs will be considered for each of the applicable licensing events to establish appropriate core thermal limits.
The ABB SVEA-96 and ANF 9x9-9X+ QFBs have been designed to be mechanically, thermal-hydraulically, and neutronically compatible with the Cycle 9 GE9B reload bundle (GE9B-P8DWB320-10GZ-80M-150-T).
Analyses have been performed by ABB and ANF to verify this compatibility and to conservatively evaluate the response of these QFBs to each of the appropriate licensing events relative to the GE9B reload bundle.
The results of these analyses demonstrate that the SVEA-96 and 9x9-9X+ QFBs are conservatively bounded by the GE98 reload bundle and can be safely operated in the core and monitored by the plant process computer.
With regard to minimum critical power ratio (MCPR),
the results of the analyses establish the effective operating limit MCPRs for the QFDs relative to the GE9B reload bundle.
These results will be utilized to conservatively set the operating limit MCPR for each QFB in the Peach Bottom Unit 2 Cycle 9 Core Operating Limits Report.
These limits will then be l
applied in the plant process computer for the monitoring of the QFDs during operation.
No other ABB SVEA-96 or ANF 9x9-9X+ QFB i
specific data or constants need to be input to the plant process computer databank.
The results of these analyses are summarized in Attachments 4 and 5. of this letter identifies the anticipated core loading positions for each of the QFBs.
These positions, which are typically lower in power than more central core positions, will further assure that the QFBs will not lead the core with respect to bundle power or nodal power.
As part of routine Philadelphia Electric Company core management activities, exposure-dependent control rod patterns have been developed to
' meet all core operating limits and to verify that operating l
margins exist between the QFBs and the leading core assemblics.
l-These margins will be maintained by core monitoring act rities.
l l
U.S. Nuclear Rsgulatory Commincion November 21, 1990
- , Qualification Fuel Bundles in Page 3 Operating Cycle 9 Attachments 1 through 5 of this letter contain information which General Electric Company, ABB Atom, Inc., and Advanced Nuclear Fuels Corporation maintain in confidence and withhold from public disclosure.
The information is handled and classified as proprietary to each of the aforementioned organizations as indicated in the attached affidavits.
We hereby request that those attachments be withheld from public disclosure in accordance with the provisions of 10 CPR 2.790.
Very truly yours, 441g4(,
Manager, Lic,'ensing
. A. Hunger / Jr.
Nuclear Engineering & Services - GEli Lead Fuel Assembly Description and uccompanying affidavit - ABB SVEA-96 Design Features and Specifications and accompanying affidavit - ANF 9x9-9X+ Design Features and Specifications and accompanying affidavit - ABB Atom Report BR 90-004 and accompanying affidavit - ANF Report ANF-90-133 (P), Rev. 1 and accompanying affidavit-l - QFB Core Loading Positions l
l Without Attachments cc:
T. T. Martin, Administrator, Region I, USNRC J. J.
Lyash, USNRC Senior Resident Inspector, PB l
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