ML053260303
| ML053260303 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 11/23/2005 |
| From: | Sands S NRC/NRR/ADRO/DORL/LPLF |
| To: | Crane C Exelon Generation Co |
| Sands S, NRR/DLPM/415-3154 | |
| References | |
| TAC MC7251, TAC MC7252 | |
| Download: ML053260303 (8) | |
Text
November 23, 2005 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO AMENDMENT REQUEST (TAC NOS. MC7251 AND MC7252)
Reference:
Letter from Keith R. Jury (Exelon Generation Company, LLC) to the U.S. Nuclear Regulatory Commission (NRC), "Request for Amendment to Technical Specifications Section 5.6.5, "Core Operating Limits Report (COLR)," dated March 7, 2005
Dear Mr. Crane:
In the referenced letter, Exelon Generation Company, LLC submitted a request for an amendment for LaSalle County Station, Units 1 and 2. This submittal was made to modify the Technical Specification (TS) Sections 5.6.5, "Core Operating Limits Report (COLR)." The proposed changes will add two new NRC approved topical report references to the list of analytical methods in TS 5.6.5, "Core Operating Limits Report (COLR)," that can be used to determine core operating limits. While reviewing your March 7, 2005 submittal, the NRC staff has determined that additional information as discussed in the enclosure to this letter, is needed to complete its review of your application.
The NRC staff developed the enclosed questions and a draft version of these questions were compiled in a request for additional information (RAI) and transmitted to Ms. Alison MacKellar of your staff via e-mail on October 13, 2005. The e-mail, also, provided for an opportunity for a phone call with NRC staff in case any clarifications were sought by Exelon. Subsequently, a phone call was conducted which clarified the final RAI, which is enclosed. It is requested that Exelon provide a response to the enclosed RAI within 30 days from the date of this letter.
C. Crane If you have any questions, please do not hesitate to contact me 301-415-3154 or by e-mail:
sps1@nrc.gov.
Sincerely,
/RA by G.Dick for/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosure:
Request for Additional Information cc w/encl: See next page
C. Crane If you have any questions, please do not hesitate to contact me 301-415-3154 or by e-mail:
sps1@nrc.gov.
Sincerely,
/RA by G.Dick for/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosure:
As stated above cc w/encl: See next page DISTRIBUTION:
PUBLIC LLois LPL III-2 R/F GMorris GSuh SSands PCoates TFord BBurgess, RIII GHill (4), T5C3 ADAMS Accession Number: ML053260303 Nrr-088 OFFICE PM:LPLIII-2 LA:LPLIII-2 SC:SBWB SC:LPLIII-2 NAME SPSands PCoates LLois GDick for GSuh DATE 11/22/05 11/22/05 11/22/05 11/23/05 OFFICIAL RECORD COPY
ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION AMENDMENT TO TECHNICAL SPECIFICATION 5.6.5 LA SALLE COUNTY STATION, UNITS 1 AND 2 DOCKET NOS. 50-373 AND 50-374 In your letter from Keith R. Jury (Exelon Generation Company, LLC) to the U.S. Nuclear Regulatory Commission (NRC), "Request for Amendment to Technical Specifications Section 5.6.5, "Core Operating Limits Report (COLR)," dated March 7, 2005, one of the changes LaSalle is proposing to TS Section 5.6.5, "Core Operating Limits Report (COLR)" is to add an NRC previously approved Framatome Advanced Nuclear Power, Inc. topical report reference for an updated methodology for evaluation of Loss-of-Coolant Accident (LOCA) conditions (EXEM BWR-2000 ECCS Evaluation Model). In order for the proposed methodology reference to be incorporated into TS Section 5.6.5, (1) the methodology must be approved by the NRC, (2) the applicant must apply the methodology by performing an LOCA analysis, and (3) the applicant must submit the results of the LOCA analysis to the staff.
In performing the new LOCA analysis, the applicant must demonstrate the effects of any change in an acceptable evaluation model or in the application of such a model to determine if the change is significant. A significant change is defined as a peak fuel cladding temperature difference of more than 50E F from the temperature calculated for the limiting transient using the last acceptable model. Based on the above, the staff is requesting additional information to complete its review.
- 1. Was a new LOCA analysis performed using the proposed EXEM BWR-2000 evaluation model to determine if there is a peak fuel temperature change of more than 50E F from the temperature calculated for the limiting transient using the current acceptable model?
(a) If yes, i) please provide the key input parameters used in both the current analysis of record, and for EXEM BWR-2000 and, ii) submit the peak fuel temperature results for the new analysis using EXEM BWR-2000 as well as the peak fuel temperature results for the current analysis of record.
(b) If a new LOCA analysis was not performed, please provide justification, or perform a new LOCA analysis using the EXEM BWR-2000 evaluation model and i) please provide the key input parameters used in both the current analysis of record, and for EXEM BWR-2000 and, ii) submit the peak fuel temperature results for the new analysis using EXEM BWR-2000 as well as the peak fuel temperature results for the current analysis of record.
LaSalle County Station Units 1 and 2 cc:
Site Vice President - LaSalle County Station Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 LaSalle County Station Plant Manager Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 Regulatory Assurance Manager - LaSalle Exelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757 U.S. Nuclear Regulatory Commission LaSalle Resident Inspectors Office 2605 North 21st Road Marseilles, IL 61341-9756 Phillip P. Steptoe, Esquire Sidley and Austin One First National Plaza Chicago, IL 60603 Assistant Attorney General 100 W. Randolph St. Suite 12 Chicago, IL 60601 Chairman LaSalle County Board 707 Etna Road Ottawa, IL 61350 Attorney General 500 S. Second Street Springfield, IL 62701 Chairman Illinois Commerce Commission 527 E. Capitol Avenue, Leland Building Springfield, IL 62706 Robert Cushing, Chief, Public Utilities Division Illinois Attorney General's Office 100 W. Randolph Street Chicago, IL 60601 Regional Administrator U.S. NRC, Region III 801 Warrenville Road Lisle, IL 60532-4351 Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 110 East Adams Street Springfield, IL 62701-1109 Document Control Desk - Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Senior Vice President - Nuclear Services Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President of Operations - Mid-West Boiling Water Reactors Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Vice President - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
LaSalle County Station Units 1 and 2 Director - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Associate General Counsel Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Manager Licensing - Dresden, Quad Cities and Clinton Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555