ML20046C288
| ML20046C288 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 08/03/1993 |
| From: | Hunger G PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| Shared Package | |
| ML19310D563 | List: |
| References | |
| NUDOCS 9308100090 | |
| Download: ML20046C288 (6) | |
Text
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PHILADELPHIA ELECTRIC COMPANY NUCLEAR GROUP HEADQUARTERS 955-65 CHESTERBROOK BLVD.
WAYNE, PA 19087-5691
,t (215) 6*Nao August 3, 1993 Docket No. 50-278 t
License No. DPR-56 U.S.
Nuclear Regulatory Commission ATTN:
Document Control Desk Washington, DC 20555
SUBJECT:
Peach Bottom Atomic Power Station, Unit 3 Lead Fuel Assemblies in Onerating Cycle 10
Dear Sirs:
Philadelphia Electric Company plans to load four (4) lead fuel assemblies (LFAs) into Peach Bottom Unit 3 during the ninth refueling outage scheduled to begin September 17, 1993.
These consist of four (4) Siemens Power Corporation (SPC) 9x9-A LFAs which are a 9x9 design featuring a large partial length central I
water channel and eight (8) multi-function rods.
The remainder of the reload bundles will be Gell fuel.
i Detailed descriptions of the SPC LFAs including major features and design specifications are provided in Attachment 1.
Figures depicting the fuel rod layout of.the LFAs including U-235 enrich.nent and gadolinia distributions are also provided in this Attachment.
The SPC LFAs have been designed to be mechanically, thermal-hydraulically, and neutronically compatible with the Peach Bottom 2 Cycle 9 GE9B reload bundle (GE9B-P8DWB320-10GZ-80M-150-T).
j Analyses have been performed by SPC to verify this compatibility and to conservatively evaluate the response of these LFAs to each j!
of the appropriate licensing events relative to the GE9B bundle.
The results of these analyses demonstrate that the 9x9-A LFAs are l
conservatively bounded by the GE9B bundle and can be safely operated in the core and monitored by the_ plant process computer.
With regard to r.inimum critical power ratio (MCPR) and maximum-6 average planar linear heat generation rate (MAPLHGR), the results l
of the analyses establish the effective operating limit MCPRs and MAPLHGRs for the LFAs relative to the GE9B bundle.
These results l
will be utilized to conservatively set the operating limit MCPR and I
l MAPLHGR for the LFAs in the Peach Bottom Unit 3 Cycle 10 Core l
Operating Limits Report.
These limits will then be applied in the l
plant process computer for the monitoring of the LFAs during g
i operation.
No other SPC LFA specific data or constants need to be analyses are summarized in Attachment 1.
_N i
[l input to the plant process computer databank.
The results of these r
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U.S.
Nuclear Regulatory Commission August 3, 1993 RE:
Lead Fuel Assemblies in Operatina Cycle 10 Pace 2 of this letter identifies the anticipated core loading positions for each of the LFAs.
These positions, which are typically lower in power than more central core positions, will further assure that the LFAs 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 margins exist between the LFAs and the leading core assemblies.
These margins will be maintained by core monitoring activities. of this letter contains information which Siemens Power Corporation maintains in confidence and withholds from public disclosure.
The information is handled and classified as proprietary to SPC as indicated in the attached affidavits.
We hereby request that this attachment be withheld from public disclosure in accordance with the provisions of 10 CFR 2.790(b).
Very truly yours, L/K.O./'ay jV G.
A.
Hunger, Jr.
Director, Licensing Station Support Department - SPC 9X9-A Report EMF-93-115 (P), Design Features and Specifications and accompanying affidavit - LFA Core Loading Positions Without Attachments cc:
T.
T.
Martin, Administrator, Region I, USNRC USNRC Senior Resident Inspector, PB M:\\ FUEL \\LM5 WP51\\3505. TAM
AFFID AVIT STATE OF WASHINGTON
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COUNTY OF BENTON
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1, R. A. Copeland being duly sworn, hereby say and depose:
1.
I am Manager, Product Ucensing, for Siemens Power Corporation ("SPC"),
and as such I am authorized to execute this Affidavit.
2.
I am familiar with SPC's detailed document control system and policies which govern the protection and control of information.
3.
I am familiar with the topical report EMF-93-115(P) entitled " Peach Bottom Unit 3 9x9A Lead Fuel Assembly Safety Analysis Report," referred to as " Document."
Information contained in this Document has been classified by SPC as proprietary in accordance with the control system and policies established by SPC for the control and protection of information.
4.
The Document contains information of a proprietary and confidential nature and is of the type customarily held in confidence by SPC and not made available to the public. Based on my experience, I am aware that other companies regard information of the kind contained in the Document as proprietary and confidential.
5.
The Document has been made available to the U.S. Nuclear Regulatory Commission in confidence, with the request that the information contained in the Document will not be disclosed or divulged.
t Th' Document contains information which is vital to a competitive 6.
e advantage of SPC and would be helpful to competitors of SPC when competing with SPC.
7.
The information contained in the Document is considered to be proprietary I
by SPC because it reveals certain distinguishing aspects of SPC licensing methodology which secure competitive advantage to SPC for fuel design optimization and marketability, and includes information utilized by SPC in its business which affords SPC an opportunity to obtain a competitive advantage over its competitors who do not or may not know or use the information contained in the Document.
8.
The disclosure of the proprietary information contained in the Document to a competitor would permit the competitor to reduce its expenditure of money and manpower and to improve its competitive position by giving it valuable insights into SPC licensing methodology and would result in substantial haim to the competitive position of SPC.
9.
The Document contains proprietary information which is held in confidence I
by SPC and is not available in public sources.
l I
10.
In accordance with SPC's policies governing the protection and control of information, proprietary information contained in the Document has been made available, on a I
limited basis, to others outside SPC only as required and under suitable agreement providing for nondisclosure and limited use of the information.
]
l 11.
SPC policy requires that proprietary information be kept in a secured file or i
area and distributed on a need-to-know basis.
12.
Information in this Document provides insight into SPC licensing methodology developed by SPC. SPC has invested significant resources in developing the methodology as well as the strategy for this application. Assuming a competitor had available the same background data and incentives as SPC, the competitor might, at a i
minimum, develop the information for the same expenditure of manpower and money as SPC.
THAT the statements made hereinabove are, to the best of my knowledge, information, and belief, truthful and complete.
FURTHER AFFIANT SAYETH NOT.
i i
SUBSCRIBED before me this O 7
-)
'i day of
.1993.
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Susan K. McCoy
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NOTARY PUBLIC, STATE OF WASHINGTON 1
MY COMMISSION EXPlRES: 1/10/96
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