ML053550016
| ML053550016 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 12/22/2005 |
| From: | Sands S Plant Licensing Branch III-2 |
| To: | Bezilla M FirstEnergy Nuclear Operating Co |
| Sands S,NRR/DLPM, 415-3154 | |
| References | |
| TAC MC6888 | |
| Download: ML053550016 (5) | |
Text
December 22, 2005 Mr. Mark B. Bezilla Vice President FirstEnergy Nuclear Operating Company Davis-Besse Nuclear Power Station Mail Stop A-DB-3080 5501 North State Route 2 Oak Harbor, OH 43449-9760
SUBJECT:
DAVIS-BESSE NUCLEAR POWER STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO MARK B-HTP FUEL DESIGN FOR CYCLE 15 (TAC NO. MC6888)
Dear Mr. Bezilla:
By letter to the Nuclear Regulation Commission dated May 2, 2005, as supplemented by letters dated August 28 and September 15, 2005, FirstEnergy Nuclear Operating Company submitted a license amendment request to support the Mark B-HTP fuel design for Cycle 15.
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, and was forwarded to your staff on November 3, 2005. During a discussion with your staff, it was agreed that you would provide a response 30 days from the date of this letter.
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 NRCs 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) 415-3154.
Sincerely,
/RA/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-346
Enclosure:
As stated cc w/encl: See next page
December 22, 2005 Mr. Mark B. Bezilla Vice President FirstEnergy Nuclear Operating Company Davis-Besse Nuclear Power Station Mail Stop A-DB-3080 5501 North State Route 2 Oak Harbor, OH 43449-9760
SUBJECT:
DAVIS-BESSE NUCLEAR POWER STATION, UNIT 1 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO MARK B-HTP FUEL DESIGN FOR CYCLE 15 (TAC NO. MC6888)
Dear Mr. Bezilla:
By letter to the Nuclear Regulation Commission dated May 2, 2005, as supplemented by letters dated August 28 and September 15, 2005, FirstEnergy Nuclear Operating Company submitted a license amendment request to support the Mark B-HTP fuel design for Cycle 15.
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, and was forwarded to your staff on November 3, 2005. During a discussion with your staff, it was agreed that you would provide a response 30 days from the date of this letter.
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 NRCs 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) 415-3154.
Sincerely,
/RA/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-346
Enclosure:
As stated cc w/encl: See next page DISTRIBUTION:
PUBLIC LPLF R/F RidsNrrDorlLplf RidsNrrPMSSands RidsNrrLADClarke RidsAcrsAcnwMail RidsOgcRp RidsRgn3MailCenter RidsDeEicb PRebstock DorlDpr ADAMS Accession Number: ML053550016 OFFICE LPL3-2/PM LPL3-2/LA DE/EICB/BC LPL3-2/BC NAME SSands DClarke AHowe MLandau DATE 12/22/05 12/22/05 12/22/05 12/22/05 OFFICIAL RECORD COPY
REQUEST FOR ADDITIONAL INFORMATION RELATED TO THE MARK B-HTP FUEL DESIGN FOR CYCLE 15 LICENSE AMENDMENT REQUEST DAVIS-BESSE NUCLEAR POWER STATION DOCKET NO. 50-346 By letter to the Nuclear Regulatory Commission (NRC) dated May 2, 2005, as supplemented by letters dated August 28 and September 15, 2005, FirstEnergy Nuclear Operating Company submitted a request for a license amendment to support the Mark B-HTP fuel design for Cycle 15. The NRC staff determined that the following information is needed in order to complete its review:
1.
Please provide the uncertainty calculation by which temperature and pressure measurement uncertainties are combined into the composite 30.239 psi total combined error and the 10.72 psi M&TE/drift error. Show how the temperature uncertainty is accounted for in the development of the uncertainty associated with the pressure limit corresponding to a measured (as opposed to actual) value of temperature.
2.
Through numerous recent discussions and correspondence between the NRC and the Nuclear Energy Institute, it has been established that the following would be appropriate:
the limiting setpoint should be designated limiting safety system setpoint (LSSS).
as-found setpoint deviation in excess of some limiting value would result in a need for a positive channel operability assessment and invocation of the plant corrective action program (CAP) before the channel could be declared OPERABLE and returned to service.
an as-found setpoint in excess of the allowable value (AV) would result in the channel being declared inoperable.
The licensee has asserted that the AV, not the limiting setpoint, is the LSSS. The proposed technical specifications (TS) do not provide any criteria at all by which operability would be assessed, or by which CAP would be invoked. The proposed TS appear to accept any value at all for the as-found setpoint without explicitly invoking any particular consequences other than reset to an acceptable value. Please explain how the proposed TS and the associated testing provide for the assessment of channel operability as required in 10 CFR 50.36, Technical specifications.
3.
The licensee proposes to evaluate the as-found setpoint against the nominal setpoint, rather than against the previous as-left value. Please explain why this does not result in the masking of excessive deviation. It would seem that with an as-left setting on one side of the nominal setpoint and an as-found value on the other, the portion of the setpoint deviation from the as-left setting to the nominal setpoint would be ignored.
Please explain how the proposed approach would be sufficiently sensitive and effective in the detection of excessive deviation.
Enclosure
Davis-Besse Nuclear Power Station, Unit 1 cc:
Manager - Regulatory Affairs FirstEnergy Nuclear Operating Company Davis-Besse Nuclear Power Station 5501 North State - Route 2 Oak Harbor, OH 43449-9760 Director, Ohio Department of Commerce Division of Industrial Compliance Bureau of Operations & Maintenance 6606 Tussing Road P.O. Box 4009 Reynoldsburg, OH 43068-9009 Regional Administrator U.S. Nuclear Regulatory Commission 801 Warrenville Road Lisle, IL 60523-4351 Resident Inspector U.S. Nuclear Regulatory Commission 5503 North State Route 2 Oak Harbor, OH 43449-9760 Barry Allen, Plant Manager FirstEnergy Nuclear Operating Company Davis-Besse Nuclear Power Station 5501 North State - Route 2 Oak Harbor, OH 43449-9760 Dennis Clum Radiological Assistance Section Supervisor Bureau of Radiation Protection Ohio Department of Health P.O. Box 118 Columbus, OH 43266-0118 Carol OClaire, Chief, Radiological Branch Ohio Emergency Management Agency 2855 West Dublin Granville Road Columbus, OH 43235-2206 Zack A. Clayton DERR Ohio Environmental Protection Agency P.O. Box 1049 Columbus, OH 43266-0149 State of Ohio Public Utilities Commission 180 East Broad Street Columbus, OH 43266-0573 Attorney General Office of Attorney General 30 East Broad Street Columbus, OH 43216 President, Board of County Commissioners of Ottawa County Port Clinton, OH 43252 President, Board of County Commissioners of Lucas County One Government Center, Suite 800 Toledo, OH 43604-6506 The Honorable Dennis J. Kucinich United States House of Representatives Washington, D.C. 20515 The Honorable Dennis J. Kucinich United States House of Representatives 14400 Detroit Avenue Lakewood, OH 44107 Gary R. Leidich President and Chief Nuclear Officer FirstEnergy Nuclear Operating Company Mail Stop A-GO-19 76 South Main Street Akron, OH 44308 Joseph J. Hagan Senior Vice President of Operations and Chief Operating Officer FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308 David W. Jenkins, Attorney FirstEnergy Corporation Mail Stop A-GO-18 76 South Main Street Akron, OH 44308
Davis-Besse Nuclear Power Station, Unit 1 cc:
Danny L. Pace Senior Vice President, Fleet Engineering FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308 Manager, Fleet Licensing FirstEnergy Nuclear Operating Company Mail Stop A-GHE-107 395 Ghent Road Akron, OH 44333 Manager, Site Regulatory Compliance FirstEnergy Nuclear Operating Company Davis-Besse Nuclear Power Station Mail Stop A-DB-3065 5501 North State Route 2 Oak Harbor, OH 43449-9760 Jeannie M. Rinckel Vice President, Fleet Oversight FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308