ML101130027
| ML101130027 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 04/22/2010 |
| From: | Goodwin C Plant Licensing Branch III |
| To: | Wohl M Plant Licensing Branch III |
| Goodwin, Cameron S, NRR/DORL, 415-3719 | |
| References | |
| TAC ME3288, TAC ME3289 | |
| Download: ML101130027 (3) | |
Text
From:
Goodwin, Cameron Sent:
Friday, April 23, 2010 8:12 AM To:
Wohl, Marilyn
Subject:
LASALLE COUNTY STATION, UNITS 1 AND 2 - RAI RE: REQUEST FOR LAR MUR POWER UPRATE (TAC NOS. ME3288 AND ME3289)
From: Goodwin, Cameron Sent: Thursday, April 22, 2010 11:23 AM To: 'joseph.bauer@exeloncorp.com' Cc: 'Allan.Haeger@exeloncorp.com'; Campbell, Stephen
Subject:
LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO REQUEST FOR LICENSE AMENDMENT REGARDING MEASUREMENT UNCERTAINTY RECAPTURE POWER UPRATE (TAC NOS. ME3288 AND ME3289)
Dear Mr. Bauer:
By letter to the Nuclear Regulatory Commission (NRC) dated January 27, 2010 (Agencywide Documents Access and Management System Package No. ML100321303), Exelon Generation Company, LLC submitted a request to revise the Operating License and Technical Specifications to implement an increase of approximately 1.65% in rated thermal power from the current licensed thermal power of 3489 megawatts thermal (MWt) to 3546 MWt, for the LaSalle County Station, Units 1 and 2.
The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on April 22, 2010, it was agreed that you would provide a response 30 days from the date of this e-mail.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRC=s goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-3719.
Sincerely, Cameron S. Goodwin, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
- 1. The licensee states in Attachment 6, Section 1.1 of the license amendment request (LAR) that the power uprate will result in an increase in electrical power from 1190 MWe to 1223 MWe (33 MWe increase). Also, Table 6-1 states that the generator output is 1170 MWe. In addition, Section 1.1 of the Updated Final Safety Analysis Report states that the gross electric output of each unit is 1183 Mwe and the net output is 1154 MWe. Furthermore, the licensee states in 2, Section 1 of the LAR that the proposed modifications at LaSalle consist of an
output increase of 20 MW. Discuss the contradictory information presented and provide the existing and uprated power level in MW(e).
- 2. Provide a detailed comparison of existing ratings with uprated ratings and the effect of the power uprate on the following equipment:
- a. Isophase bus
- b. Class 1E buses
- d. Class 1E batteries, chargers and inverters
- 3. For the current uprate, please address and discuss the following:
- a. Quantity and nature of mega volt ampere reactive (MVAR) support necessary to maintain post-trip loads and minimum voltage levels. Address the effects of the power uprate on MVAR support.
- b. How the power uprate changes the MVAR contributions credited by the Transmission System Operator (TSO).
- 4. Provide a summary of the evaluations and the accident profiles performed to confirm the validity of the environmental qualification of electrical equipment, post power uprate.
E-mail Properties Mail Envelope Properties (F5A4366DF596BF458646C9D433EA37D72923FE6722)
Subject:
LASALLE COUNTY STATION, UNITS 1 AND 2 - RAI RE: REQUEST FOR LAR MUR POWER UPRATE (TAC NOS. ME3288 AND ME3289)
Sent Date: 04/23/2010 8:12:07 AM Received Date: 04/23/2010 8:12:07 AM From: Goodwin, Cameron Created By: Cameron.Goodwin@nrc.gov Recipients:
Marilyn.Wohl@nrc.gov (Wohl, Marilyn)
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