ML080720021
| ML080720021 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 03/20/2008 |
| From: | Tam P NRC/NRR/ADRO/DORL/LPLIII-1 |
| To: | Rencheck M Indiana Michigan Power Co |
| Tam P | |
| References | |
| TAC MD5899, TAC MD5900 | |
| Download: ML080720021 (4) | |
Text
March 20, 2008 Mr. Michael W. Rencheck Senior Vice President and Chief Nuclear Officer Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106
SUBJECT:
D. C. COOK NUCLEAR PLANT, UNITS 1 AND 2 - REVISED REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED AMENDMENT ON EMERGENCY DIESEL GENERATOR STEADY STATE FREQUENCY (TAC NOS. MD5899 AND MD5900)
Dear Mr. Rencheck:
In a letter dated June 27, 2007, Indiana Michigan Power Company applied for an amendment regarding emergency diesel generator maximum steady state frequency. The Nuclear Regulatory Commission (NRC) staff reviewed the information transmitted by that letter and issued a Request for Additional Information (RAI) on November 28, 2007. That RAI inadvertently omitted the updated Questions (4) and (5), and an additional Question (6), which had been transmitted to your staff in draft form by e-mail (Accession No. ML073250426). In addition, as a result of discussions with your staff in the past three months, the NRC staff determined that Question (6) needs to be revised.
Enclosed please find the updated RAI, revised to include the above changes; the line on the right-hand margin indicates the areas changed. Please respond to this revised RAI within 30 days of the date of this letter. Feel free to contact me if you need clarification of this revised RAI.
Sincerely,
/RA/
Peter S. Tam, Senior Project Manager Plant Licensing Branch III-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-315 and 50-316
Enclosure:
As stated cc: See next page
ML080720021 OFFICE LPL3-1/PM LPL3-1/LA EEEB EEEB EEEB/BC LPL3-1/BC NAME PTam THarris AKlett VGoel GWilson LJames DATE 3/12/08 3/14/08 3/12/08 3/12/08 3/13/08 3/20/08
REVISED REQUEST FOR ADDITIONAL INFORMATION D.C. COOK NUCLEAR PLANT, UNITS 1 AND 2 PROPOSED AMENDMENT ON DIESEL GENERATOR MAXIMUM STEADY STATE FREQUENCY (1)
Clarify how the panel instrument errors are accounted for in the proposed emergency diesel generator (EDG) frequency values indicated in the Technical Specifications (TS).
(2)
Provide the EDG manufacturer=s various ratings for the EDGs, such as the continuous and the short-time ratings.
(3)
State which Nuclear Regulatory Commission (NRC) Regulatory Guides, Institute of Electrical and Electronics Engineers Standards, or other guidance documents (and the revision numbers of those documents) to which D.C. Cook is committed for the purposes of EDG design and testing.
(4)
Provide a summary of the latest EDG sizing calculation.
(5)
Clarify why the voltage values indicated in the SRs of TS 3.8.1 are lower than the minimum degraded voltage function allowable value indicated in TS SR 3.3.5.3 (see NRC Information Notice 2007-09, "Equipment Operability Under Degraded Voltage Conditions," ADAMS Accession Number ML070390066).
(6)
Provide justification for the basis of the TS surveillance requirements for achieving an EDG voltage of 3740 volts (V) in 10 seconds. Provide the calculation, or portions thereof, which show that the existing minimum TS-required voltages (3740 V at 10 seconds) are adequate at the instant of 10+ seconds (when first block load is connected at 10 seconds in the case of a worst-case design-basis accident).
Donald C. Cook Nuclear Plant, Units 1 and 2 cc:
Attorney General Department of Attorney General 525 West Ottawa Street Lansing, MI 48913 Township Supervisor Lake Township Hall P.O. Box 818 Bridgman, MI 49106 U.S. Nuclear Regulatory Commission Resident Inspector's Office 7700 Red Arrow Highway Stevensville, MI 49127 Kimberly Harshaw, Esquire Indiana Michigan Power Company One Cook Place Bridgman, MI 49106 Mayor, City of Bridgman P.O. Box 366 Bridgman, MI 49106 Special Assistant to the Governor Room 1 - State Capitol Lansing, MI 48909 James M. Petro, Jr.
Regulatory Affairs Manager Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106 Michigan Department of Environmental Quality Waste and Hazardous Materials Div.
Hazardous Waste & Radiological Protection Section Nuclear Facilities Unit Constitution Hall, Lower-Level North 525 West Allegan Street P. O. Box 30241 Lansing, MI 48909-7741 Joel P. Gebbie, Plant Manager Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106 Mark A. Peifer, Site Vice President Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106