ML071780307

Request for Additional Information Related to Proposed License Amendment to Revise the Minimum Emergency Diesel Generator Voltage in Technical Specification 3.8.1 Surveillance Requirements

ML071780307
Person / Time
Site:	Fermi
Issue date:	07/03/2007
From:	Adrian Muniz NRC/NRR/ADRO/DORL/LPLIII-1
To:	Jennifer Davis Detroit Edison
muniz A, ADRO/DORL/415-4044
References
TAC MD4930
Download: ML071780307 (4)

Text

July 3, 2007 Mr. Jack M. Davis Senior Vice President and Chief Nuclear Officer Detroit Edison Company Fermi 2 - 210 NOC 6400 North Dixie Highway Newport, MI 48166

SUBJECT:

FERMI, UNIT 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO PROPOSED LICENSE AMENDMENT TO REVISE THE MINIMUM EMERGENCY DIESEL GENERATOR VOLTAGE IN TECHNICAL SPECIFICATION 3.8.1 SURVEILLANCE REQUIREMENTS (TAC NO. MD4930)

Dear Mr. Davis:

By letter to the Nuclear Regulatory Commission (NRC) dated March 19, 2007, Detroit Edison Company submitted a request to revise the Technical Specification 3.8.1 to change the minimum Emergency Diesel Generator output voltage acceptance criterion, for Fermi, Unit 2.

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 July 3, 2007, it was agreed that you would provide a response within 45 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) 415-4093.

Sincerely,

/RA/

Adrian Muniz, Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-341

Enclosure:

Request for Additional Information cc w/encl: See next page

ML071780307 OFFICE LPL3-1/PM LPL3-1/LA DE/EEEB LPL3-1/(A)BC NAME AMuniz THarris GWilson TTate DATE 7/2/07 7/2/07 7/2/07 7/3/07 REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST EMERGENCY DIESEL GENERATOR OUTPUT VOLTAGE ACCEPTANCE CRITERION DETROIT EDISON COMPANY FERMI, UNIT 2 DOCKET NO. 50-341 By letter dated March 19, 2007, (Agencywide Documents Access and Management System Accession No. ML070860204), Detroit Edison Company requested an amendment to the Fermi, Unit 2 (Fermi) Technical Specifications (TS). The proposed amendment would revise TS 3.8.1 to change the minimum emergency diesel generator (EDG) output voltage acceptance criterion, for Fermi. The Nuclear Regulatory Commission staff has determined that the following information is needed in order to complete its review:

1. Provide the calculations (issued on February 13, 2007) referenced in Section 3.4 of Attachment 1 of the license amendment request dated March 19, 2007. Provide a brief description of how drift, measurement uncertainty, and margin are accounted for in the calculations that support that the EDG output voltage is sufficient for the required loads.

2. Provide the analyses, if different from the calculations referenced in No. 1 above, that support that the minimum required EDG output voltage is enveloped by the proposed minimum testing voltage and that the EDG output voltage will start and accelerate all required loads in the required times without any adverse effects (such as a motor tripping on overcurrent).

ENCLOSURE

Fermi 2 cc:

David G. Pettinari Supervisor - Electric Operators Legal Department Michigan Public Service Commission 688 WCB P.O. Box 30221 Detroit Edison Company Lansing, MI 48909 2000 2nd Avenue Detroit, MI 48226-1279 Wayne County Emergency Management Division Michigan Department of Environmental 10250 Middlebelt Road Quality Detroit, MI 48242 Waste and Hazardous Materials Division Radiological Protection and Medical Waste Mr. Joseph H. Plona Section Vice President - Nuclear Generation Nuclear Facilities Unit Detroit Edison Company Constitution Hall, Lower-Level North Fermi 2 - 210 NOC 525 West Allegan Street 6400 North Dixie Highway P.O. Box 30241 Newport, MI 48166 Lansing, MI 48909-7741 U.S. Nuclear Regulatory Commission Resident Inspector's Office 6450 N Dixie Highway Newport, MI 48166 Mr. M. V. Yudasz, Jr., Director Monroe County Emergency Management Division 965 South Raisinville Road Monroe, MI 48161 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Ronald W. Gaston Manager, Nuclear Licensing Detroit Edison Company Fermi 2 - 200 TAC 6400 North Dixie Highway Newport, MI 48166