ML050450230
| ML050450230 | |
| Person / Time | |
|---|---|
| Site: | Dresden, Quad Cities  |
| Issue date: | 02/17/2005 |
| From: | Rossbach L NRC/NRR/DLPM/LPD3 |
| To: | |
| Rossbach L, 415-2863, NRR/DLPM | |
| Shared Package | |
| ML050450418 | List: |
| References | |
| TAC MC4397, TAC MC4398 | |
| Download: ML050450230 (6) | |
Text
February 17, 2005 LICENSEE:
Exelon Generation Company, LLC FACILITY:
Quad Cities and Dresden Nuclear Power Stations
SUBJECT:
SUMMARY
OF JANUARY 25 AND 26, 2005, MEETING WITH EXELON GENERATION COMPANY, LLC, ON STEAM DRYER ANALYSES AND PLANS FOR INSTALLATION OF NEW STEAM DRYERS (TAC NOS. MC4397 AND MC4398)
On January 25 and 26, 2005, a Category 1 public meeting was held between the U.S. Nuclear Regulatory Commission (NRC) and representatives of Exelon Generation Company, LLC, (Exelon) at Exelon Nuclear, Cantera Cornerstone 2, 4300 Winfield Road, Warrenville, Illinois.
The purpose of the meeting was to discuss Exelons analysis of the steam dryers at the Quad Cities (QCNPS) and Dresden Nuclear Power Stations (DNPS) and plans for installation of new steam dryers at QCNPS. The lists of attendees are provided as Attachment 1.
The licensee presented (1) current proprietary scale model test results for Quad Cities Unit 1; (2) proprietary acoustic circuit analysis of the extended power uprate (EPU) loads predicted to be applied to the steam dryers; (3) finite element model analysis, portions of which were proprietary, of the stresses experienced by the original and modified steam dryers during previous EPU operation at QCNPS and DNPS and predicted to be experienced by the replacement steam dryers at QCNPS; (4) a discussion of the use of strain gauges on Dresden Unit 3 main steam lines to obtain hoop stresses representative of internal pressures; and (5) installation details for instrumentation on the new Quad Cities Unit 1 steam dryer. A non-proprietary copy of the licensees presentation is available in the Agencywide Documents Access and Management System (ADAMS) at Accession Number ML050390467. The licensees presentation slides included information on the 50.59 evaluation of secondary containment modifications for openings to bring the new steam dryers into the QCNPS reactor building but this was not presented due to time constraints.
NRC staff expressed interest in discussing the steam dryer 50.59 evaluations at our next meeting. Exelon said that they expected to have the 50.59 evaluation for the new steam dryer in March 2005.
NRC observed that significant work had been performed by the licensee in addressing potential flow effects on the steam dryers. However, the staff noted that most of the technical information discussed was unfinished and that significant effort is needed to finalize and validate the licensees analysis methods. NRC asked Exelon how and when they proposed to resolve their commitment to keep the QCNPS units at pre-EPU power until NRC approved operating at EPU power. Exelon said they were still developing their proposal but were considering proposing that NRC agree to a provisional release from that commitment. We agreed to have further discussion on this point.
NRC staff noted the importance of the licensees start-up test program for the new steam dryers and asked that it be included in our next meeting. The staff also indicated that it will provide a request for additional information to the licensee in the near future on the steam dryer analysis and replacement design.
At the conclusion of the meeting, the staff indicated that the meeting had provided a successful technical exchange. It was agreed to target late February to early March for our next technical meeting on QCNPS and DNPS steam dryer issues.
Members of the public were in attendance. No Public Meeting Feedback forms or comments were received.
Please direct any inquiries to Lawrence Rossbach at 301-425-2863, or lwr@nrc.gov.
/RA/
Lawrence Rossbach Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-254, 50-265, 50-237, and 50-249 Attachments: 1. Lists of Attendees
- 2. Licensee Handout, see ADAMS Accession Number ML050390467 cc w/ atts: See next page
Dresden and Quad Cities Nuclear Power Stations cc:
Site Vice President - Dresden Nuclear Power Station Exelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765 Dresden Nuclear Power Station Plant Manager Exelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765 Regulatory Assurance Manager - Dresden Exelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765 U.S. Nuclear Regulatory Commission Dresden Resident Inspectors Office 6500 N. Dresden Road Morris, IL 60450-9766 Chairman Grundy County Board Administration Building 1320 Union Street Morris, IL 60450 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 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 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
Dresden and Quad Cities Nuclear Power Stations cc:
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 February 17, 2005 NRC staff noted the importance of the licensees start-up test program for the new steam dryers and asked that it be included in our next meeting. The staff also indicated that it will provide a request for additional information to the licensee in the near future on the steam dryer analysis and replacement design.
At the conclusion of the meeting, the staff indicated that the meeting had provided a successful technical exchange. It was agreed to target late February to early March for our next technical meeting on QCNPS and DNPS steam dryer issues.
Members of the public were in attendance. No Public Meeting Feedback forms or comments were received.
/RA/
Lawrence Rossbach Project Directorate III Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket Nos. 50-254, 50-265, 50-237, and 50-249 Attachments: 1. Lists of Attendees
- 2. Licensee Handout, see ADAMS Accession Number ML050390467 cc w/atts: See next page DISTRIBUTION:
PUBLIC PDIII-2 r/f LRossbach OGC ACRS/ACNW TMarsh/JLyons WRuland GSuh PCoates TMensah EImbro DTerao TScarbrough JWu BElliot DHelton MKurth, RIII MSheikh, RIII MRing, RIII JNeurauter, RIII BJose, RIII KManoly REnnis UShoop MBanerjee GThomas JStang Package Accession No: ML050450418 Meeting Notice No: ML050100265 Meeting Sign-In Sheet No: ML050450561 ADAMS Accession Number: ML050450230 OFFICE PM:PDIII-2 LA:PDIII-2 SC:PDIII-2 NAME LRossbach PCoates GSuh DATE 2/17/05 2/17/05 2/17/05 OFFICIAL RECORD COPY