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| | number = ML081790843 | | | number = ML081790843 |
| | issue date = 07/11/2008 | | | issue date = 07/11/2008 |
| | title = Donald C. Cook Nuclear Plant, Unit 2 - Request for Additional Information on the Steam Generator Inspection Report for Year 2007 (TAC No. MD8397) | | | title = Donald C. Cook Nuclear Plant, Unit 2 - Request for Additional Information on the Steam Generator Inspection Report for Year 2007 |
| | author name = Tam P S | | | author name = Tam P S |
| | author affiliation = NRC/NRR/ADRO/DORL/LPLIII-1 | | | author affiliation = NRC/NRR/ADRO/DORL/LPLIII-1 |
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Category:Letter
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[Table view] |
Text
July 11, 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:
DONALD C. COOK NUCLEAR PLANT, UNIT 2 (DCCNP-2) - REQUEST FOR ADDITIONAL INFORMATION, REGARDING STEAM GENERATOR INSPECTION REPORT FOR YEAR 2007 (TAC NO. MD8397)
Dear Mr. Rencheck:
In a letter dated March 18, 2008, Indiana Michigan Power Company (I&M) submitted the steam generator inspection report for the year 2007. The Nuclear Regulatory Commission (NRC) staff reviewed the report and issued a draft Request for Additional Information (RAI) on June 9, 2008 (Accession No. ML081620129). On June 27, 2008, the NRC staff discussed the draft RAI with I&M staff, and participants agreed that the draft RAI can be formally issued. Accordingly, the finalized RAI is issued as enclosure to this letter.
Please respond within 30 days of receipt of this letter. Feel free to contact me if you need clarification of this 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 No. 50-316
Enclosure:
As stated cc: See next page
ML081790843 OFFICE LPL3-1\PM LPL3-1/LA SRSB LPL3-1/BC NAME PTam THarris MYoder for AHiser PTam for LJames DATE 7/3/08 7/2/08 7/8/08 7/11//08 REQUEST FOR ADDITIONAL INFORMATION D.C. COOK NUCLEAR PLANT, UNIT 2 (DCCNP- 2)
STEAM GENERATOR INSPECTION REPORT FOR YEAR 2007
(1) Indiana Michigan Power Company (I&M) mentioned that at the time of the 2007 inspection, the steam generators (SGs) had operated for 132.6 effective full power months (EFPM). Please clarify this statement by providing the following information: For each refueling outage and SG tube inspection outage since the replacement of the SGs, please provide the cumulative EFPM that the SGs have operated.
(2) I&M indicated that no abnormal conditions were identified during the inspection of the steam drum area (including the feedring, J-nozzles, and moisture separator units). Please discuss whether any degradation was observed during these inspections.
(3) Please discuss the results of I&M's foreign object search and retrieval efforts. If any loose parts were left in the SG, please discuss whether I&M confirmed that it was acceptable (from a tube integrity standpoint) to leave these loose parts in the steam generator.
(4) Please confirm that the condition monitoring limit for wear at the tube support plate is 41-percent through-wall (which would indicate that such indications may need to be plugged at through-wall depths much less than the technical specification repair criteria).
(5) I&M indicated that no active degradation (as defined by the Electric Power Research Institute) was identified during the 2007 inspections. In addition, I&M indicated that the "indications of interest were limited to seven support plate wear indications." Please discuss whether any degradation/flaws (other than the seven support plate wear indications) were observed.
Enclosure
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. Radiological Protection Section Radiological Assessment 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
Lawrence J. Weber, Site Vice President Indiana Michigan Power Company Nuclear Generation Group One Cook Place Bridgman, MI 49106