ML20093P130
| ML20093P130 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 10/18/1995 |
| From: | Benes G COMMONWEALTH EDISON CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9510300120 | |
| Download: ML20093P130 (2) | |
Text
o mnnumeahh iaison comiuny 1 itx) Opm Pl.n r i h m ners Grm r,11. (o515 4
e a Octbber' 10,1995 l
1 U.S. Nuclear Regulatory Commission q
Attn: Document Control Desk Washington, D.C. 20555
SUBJECT:
LaSalle County Nuclear Power Station Units 1 and 2 Request for Cost Benefit Licensing Action Consideration for General Electric Extended Power Uprate Topical NRC Docket Nos. 50 373 and 50 374
REFERENCE:
Letter, K. K. Berry (GE) to B. A. Wetzel (USNRC), " Submittal of GE Proprietary Document NEDC 32424P ' Generic Guidelines for General Electric Boiling Water Reactor Extended Power Uprate,' Class Ill, dated February 1995",
February 24,1995.
The purpose of this letter is to request that the General Electric (GE) topical, which has been submitted by GE to the NRC for approval by the referenced letter, be considered as a Cost Beneficial Licensing Action (CBLA).
The referenced GE topical addresses the methodology for performing Extended Power Uprate Analyses. Additionally, a portion of this topical pertains to the use of ODYN to analyze ATWS events.
Commonwealth Edison (Comed) is currently preparing an amendment to remove several safety /rellel valves (SRVs) for both Units 1 and 2. To justify removal of SRVs, the MSIV Closure Without Scram (MSIVC) ATWS event must be reanalyzed. GE is currently licensed to perform this analysis using the REDY code. Use of this code in performing the MSIVC analysis would allow Comed to remove four SRVs from each unit. However, initial sensitivity studies Indicate that the use of the ODYN code to analyze this event would allow an additional two SRVs to be removed from each unit.
The removal of an extra two SRVs from each unit will save approximately $900,000 for both units over the life of the plant due to testing costs during refuel outages. From past data it is estimated that it costs Comed approximately $45,000 for each SRV to be removed for testing, sent out to be tested, tested, and sent back to LaSalle and reinstalled.
Additionally, worker dose will also be reduced. Comed plans on submitting the SRV removal amendment in January 1996, with approval requested for 2700E h
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2-October 18,1995 September 1996 (LaSalle Unit 2 Cycle 7 shutdown). Comed desires to include in the submittal the MSIVC analysis results obtained from the ODYN code in conclusion, Comed requests that NRC review and approval of the referenced GE topical be processed as a CBLA.
Please direct any questions you may have concerning this request to this office.
Sincerely, l
Ga y G. Benes Nuclear Licensing Administrator cc:
R. C. Jones Jr., Reactor Systems Branch Chief NRR H. J. Miller - Regional Administrator, Region lli R. M. Latta - Project Manager, NRR B. A. Wetzel Project Manager, NRR T. K. Kim Project Manger, NRR P. G. Brochman, Senior Resident Inspector - LaSalle County Station Office of Nuclear Facility Safety IDNS i
1
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