ML052090225
| ML052090225 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/02/2005 |
| From: | Dick G NRC/NRR/DLPM/LPD3 |
| To: | |
| Dick G F, NRR/DLPM,415-3019 | |
| Shared Package | |
| ML052090236 | List: |
| References | |
| Download: ML052090225 (4) | |
Text
August 2, 2005 LICENSEE:
Exelon Generation Company, LLC FACILITY:
Quad Cities Nuclear Power Station, Units 1 and 2
SUBJECT:
SUMMARY
OF JUNE 30, 2005, MEETING WITH EXELON GENERATION COMPANY, LLC, REGARDING ACOUSTIC CIRCUIT MODEL (ACM)
ANALYSIS AND STEAM DRYER LOAD DEFINITION On June 30, 2005, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC (the licensee) at NRC headquarters in Rockville, Maryland. The purpose of the meeting was to discuss the use of the acoustic circuit model (ACM) to predict pressure forces on the steam dryers at Quad Cities, Units 1 and 2 (QC-1 and QC-2).
A listing of the participants is available through the Agencywide Document Access and Management System (ADAMS) at accession number ML051960016.
The licensee presented information regarding; (1) its plans and basis for operation of QC-1 at extended power uprate (EPU) levels, (2) assessment of the ACM in determining steam dryer loading for QC-2, (3) an assessment of the capability of the ACM to predict loads at 85 percent power (pre-EPU licensed power level), (4) an assessment of the capability of the ACM to predict loads at 100 percent power, and (5) the ability of the steam line strain gauges installed on QC-1 to provide accurate data for use as input to the ACM in predicting steam dryer acoustic loads. Discussions regarding the content of the QC-2 60 day report were, by agreement of both parties, deferred until a later date.
A copy of the licensee's presentation is available in ADAMS at ML051860247.
The NRC staff concluded that the meeting was beneficial in providing it with a better understanding of how the licensee was using the model to represent the performance of both Units 1 and 2. However, the staff indicated that it continues to have questions regarding the validation of the ACM used to calculate steam dryer loads. For example, the staff noted questions remain regarding how the model was being adjusted to compensate for the Unit 1 failed strain gauges, model defects, uncertainty ranges, and damping factors.
At the end of the discussions between the NRC and the licensee, there were several comments from a member of the public (ML051920156). The comments were taken under consideration by both the NRC staff and the licensee.
/RA/
George F. Dick, Sr. Project Manager, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265 cc: See next page At the end of the discussions between the NRC and the licensee, there were several comments from a member of the public (ML051920156). The comments were taken under consideration by both the NRC staff and the licensee.
/RA/
George F. Dick, Sr. Project Manager, Section 2 Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-254 and 50-265 cc: See next page DISTRIBUTION:
PUBLIC RidsNrrDlpmLpdiii(A) (HNieh)
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RidsNrrPMGDick TScarbrough GImbro MRing, RIII MKurth, RIII DHills, RIII Package No.: ML052090236 Meeting Notice: ML051750731 Accession No.: ML052090225 Nrc-001 OFFICE PDIII-2/PM PDIII-2/LA EMEB EMEB PDIII-2/SC NAME GDick PCoates RKaras KManoly GSuh DATE 7/29/05 7/28/05 8/1/05 7/29/05 8/2/05 OFFICIAL RECORD COPY
Quad Cities Nuclear Power Station Units 1 and 2 cc:
Site Vice President - Quad Cities Nuclear Power Station Exelon Generation Company, LLC 22710 206th Avenue N.
Cordova, IL 61242-9740 Quad Cities Nuclear Power Station Plant Manager Exelon Generation Company, LLC 22710 206th Avenue N.
Cordova, IL 61242-9740 Regulatory Assurance Manager - Quad Cities Exelon Generation Company, LLC 22710 206th Avenue N.
Cordova, IL 61242-9740 Quad Cities Resident Inspectors Office U.S. Nuclear Regulatory Commission 22712 206th Avenue N.
Cordova, IL 61242 David C. Tubbs MidAmerican Energy Company One River Center Place 106 E. Second, P.O. Box 4350 Davenport, IA 52808-4350 Vice President - Law and Regulatory Affairs MidAmerican Energy Company One River Center Place 106 E. Second Street P.O. Box 4350 Davenport, IA 52808 Chairman Rock Island County Board of Supervisors 1504 3rd Avenue Rock Island County Office Bldg.
Rock Island, IL 61201 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 Reactor 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 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 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555