ML073190145
| ML073190145 | |
| Person / Time | |
|---|---|
| Site: | Cook  |
| Issue date: | 11/28/2007 |
| From: | Tam P NRC/NRR/ADRO/DORL/LPLIII-1 |
| To: | Rencheck M Indiana Michigan Power Co |
| tam P, NRR/DORL, 415-1451 | |
| References | |
| TAC MD5899, TAC MD5900 | |
| Download: ML073190145 (4) | |
Text
November 28, 2007 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 - 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 has generated draft questions, which had been e-mailed to your staff (Accession No. ML072890047) on October 15, 2007. The NRC staff discussed the draft questions with your staff in a telephone conference on November 14, 2007. As a result of that discussion and subsequent internal deliberation, the NRC staff revised draft Questions 4 and 5, and finalized the enclosed Request for Additional Information (RAI).
Please respond within 30 days of the date of this letter. Feel free to contact me if you need clarification of this RAI.
Sincerely,
/RA by MChawla/
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
ML073190145 OFFICE LPL3-1\\PM LPL3-1/LA EEEB/BC LPL3-1/BC (A)
NAME PTam/MChawla for THarris GWilson CMunson DATE 11/ 28 /07 11/20 /07 11/ 28 /07 11/ 28 /07
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, including a copy of the purpose, assumptions, and conclusions section of the calculation.
(5)
The NRC staff has identified an issue with D.C. Cook=s EDG voltage values in TS 3.8.1.
The voltage values indicated in the surveillance requirements (SRs) of TS 3.8.1 are lower than the minimum degraded voltage function allowable value indicated in TS SR 3.3.5.3, which is not acceptable (see NRC Information Notice 2007-09, "Equipment Operability Under Degraded Voltage Conditions," ADAMS Accession No. ML070390066). Since the voltage values are contained within the same sentences in the TS that are affected by the proposed amendment to change the frequency values, the NRC staff cannot approve the amendment request knowing that there is a deficiency with the voltage values. Please propose how D.C. Cook plans to proceed regarding this issue and its effects on the proposed amendment.
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 Susan D. Simpson 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 Lawrence J. Weber, Plant Manager Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106 Joseph Jensen, Site Vice President Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106