ML072690019
| ML072690019 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 10/03/2007 |
| From: | Thomas Wengert NRC/NRR/ADRO/DORL/LPLIII-2 |
| To: | Bezilla M FirstEnergy Nuclear Operating Co |
| Wengert, Thomas NRR/DORL 415-4037 | |
| References | |
| TAC MD5240 | |
| Download: ML072690019 (6) | |
Text
October 3, 2007 Mr. Mark B. Bezilla Site 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 NO. 1 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO MEASUREMENT UNCERTAINTY RECAPTURE POWER UPRATE (TAC NO. MD5240)
Dear Mr. Bezilla:
By letter to the Nuclear Regulatory Commission (NRC) dated April 12, 2007, as supplemented by letter dated September 18, 2007, FirstEnergy Nuclear Operating Company submitted a request to make the operating license and technical specification changes necessary to allow an increase of approximately 1.63 percent in the rated thermal output, for the Davis-Besse Nuclear Power Station, Unit No. 1.
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 September 19, 2007, it was agreed that you would provide a response within 30 days.
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) 415-4037.
Sincerely,
/RA/
Thomas J. Wengert, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-346
Enclosure:
Request for Additional Information cc w/encl: See next page
Mr. Mark B. Bezilla October 3, 2007 Site 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 NO. 1 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO MEASUREMENT UNCERTAINTY RECAPTURE POWER UPRATE (TAC NO. MD5240)
Dear Mr. Bezilla:
By letter to the Nuclear Regulatory Commission (NRC) dated April 12, 2007, as supplemented by letter dated September 18, 2007, FirstEnergy Nuclear Operating Company submitted a request to make the operating license and technical specification changes necessary to allow an increase of approximately 1.63 percent in the rated thermal output, for the Davis-Besse Nuclear Power Station, Unit No. 1.
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 September 19, 2007, it was agreed that you would provide a response within 30 days.
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) 415-4037.
Sincerely,
/RA/
Thomas J. Wengert, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-346
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMTWengert RidsNrrLAEWhitt RidsOgcRp RidsAcrsAcnwMailCenter RidsRgn3MailCenter RidsNrrDorlDpr RidsNrrDirsItsb CSchulten, NRR ADAMS Accession Number: ML072690019 Accession Number: ML072690019 OFFICE LPL3-2/PM LPL3-2/LA DIRS/ITSB/BC LPL3-2/BC NAME TWengert EWhitt CSchulten for TKobetz RGibbs DATE 9/28 /2007 9/28/2007 9/28/2007 10/3/2007 OFFICIAL RECORD COPY
Davis-Besse Nuclear Power Station, Unit No. 1 cc:
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 Director, Ohio Department of Commerce Division of Industrial Compliance Bureau of Operations & Maintenance 6606 Tussing Road P.O. Box 4009 Reynoldsburg, OH 43068-9009 Resident Inspector U.S. Nuclear Regulatory Commission 5503 North State Route 2 Oak Harbor, OH 43449-9760 Stephen Helmer Supervisor, Technical Support Section Bureau of Radiation Protection Ohio Department of Health 35 East Chestnut Street, 7th Floor Columbus, OH 43215 Carol O=Claire, 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 Joseph J. Hagan President and Chief Nuclear 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-15 76 South Main Street Akron, OH 44308 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-GO-2 76 South Main Street Akron, OH 44308
Davis-Besse Nuclear Power Station, Unit 1 cc:
Director, Fleet Regulatory Affairs FirstEnergy Nuclear Operating Company Mail Stop A-GO-2 76 South Main Street Akron, OH 44308 Jeannie M. Rinckel Vice President, Fleet Oversight FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308 Richard Anderson Vice President, Nuclear Support FirstEnergy Nuclear Operating Company Mail Stop A-GO-14 76 South Main Street Akron, OH 44308 James H. Lash 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
REQUEST FOR ADDITIONAL INFORMATION DAVIS-BESSE NUCLEAR POWER STATION, UNIT NO. 1 DOCKET NO. 50-346 In reviewing the FirstEnergy Nuclear Operating Company= (FENOC=) submittal dated April 12, 2007, related to the license amendment request (LAR) to increase the maximum power level from 2772 megawatts thermal (MWt) to 2817 MWt, for the Davis-Besse Nuclear Power Station, Unit No. 1 (DBNPS), the NRC staff has determined that the following information is needed in order to complete its review:
The LAR proposes to change to the maximum power limit in the DBNPS facility operating license, NPF-3, from 2772 MWt to 2817 MWt. The proposed power uprate is a Measurement Uncertainty Recapture (MUR) using a Caldon Leading Edge Flowmeter (LEFM) CheckPlus system to support an approximate 1.6 percent power increase. This will permit the recovery of approximately 45 MWt by using more accurate Caldon instrumentation to calculate core power production. The currently installed flow instruments will continue to provide inputs to other indication and control systems. The NRC staff has the following request for additional information regarding the LAR:
- 1.
Demonstrate compliance with Title 10 of the Code of Regulations (10 CFR) Part 50, Section 10 CFR 50.36(c)(2) and (c)(3) for plant operating conditions when the LEFM cannot perform its specified support function in performing the calorimetric heat balance.
The LAR revises the High Flux trip setpoint Allowable Value in technical specification (TS) Table 2.2-1 to include a setpoint change related to operating at 2817 MWt. Regulation 10 CFR 50.36(c)(2) specifies that when a limiting condition for operation (LCO) is not met, the plant must be shutdown or follow any remedial action permitted by the TSs. Regulation 10 CFR 50.36(c)(3) specifies that surveillance requirements assure that the necessary quality of systems and components is maintained, that facility operation will be within safety limits and that the LCO will be met. The proposed LAR TS changes do not specify TS required actions that must be followed if the LEFM inputs to the calorimetric heat balance are not available for meeting surveillance requirements to demonstrate the LCO is met.
Further, Regulatory Issue Summary 2002-03, AGuidance on the Content of Measurement Uncertainty Recapture Power Uprate Applications, Attachment 2, AEvaluation of Feedback Received During the Public Workshop on August 23, 2001 (Arranged by Guidance Section),@ provides the following guidance:
I.5. What should a licensee do when the instrument is out of service?
NRC staff approvals of topical reports for the feedwater measurement technique identify what information is appropriate for addressing this comment (typically included as the first criterion). Therefore, this information is covered by Items I.1.C. and I.1.D. of the draft guidance.
However, as a result of this comment, the NRC staff has modified Section I. to provide more explicit guidance in this area.
Specifically, a licensee should propose an allowed outage time for the instrument, similar to the allowed outage times contained in the technical specifications for other equipment. If an approved allowed outage time is exceeded, the licensee should reduce the power level of the plant to ensure that it appropriately accounts for the uncertainty in the instrumentation being relied upon. Item I.1.G. and H. of the guidance now address the staff=s information needs for this case.
(Emphasis added)
Therefore, the licensee must describe what TS(s) should be created or modified to address the requirements of 10 CFR 50.36(c)(2), including Required Actions and Completion Times, or state why no additional changes are needed for the TSs when the LEFM low uncertainty inputs are not available for the heat balance calorimetric algorithm.