ML082490388
| ML082490388 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 09/09/2008 |
| From: | Lyon C Plant Licensing Branch IV |
| To: | Minahan S Nebraska Public Power District (NPPD) |
| Lyon, C F, NRR/DLPM, 415-2296 | |
| References | |
| TAC MD8374 | |
| Download: ML082490388 (6) | |
Text
September 9, 2008 Mr. Stewart B. Minahan Vice President-Nuclear and CNO Nebraska Public Power District 72676 648A Avenue Brownville, NE 68321
SUBJECT:
COOPER NUCLEAR STATION - REQUEST FOR ADDITIONAL INFORMATION RE: REACTOR EQUIPMENT COOLING SYSTEM (TAC NO. MD8374)
Dear Mr. Minahan:
By application dated March 24, 2008 to the U.S. Nuclear Regulatory Commission (NRC)
(Agencywide Documents Access and Management System Accession No. ML080910062),
Nebraska Public Power District (NPPD, the licensee) requested NRC staff approval of an amendment to the Cooper Nuclear Station facility operating license and technical specifications (TSs) to revise TS Section 3.7.3, "Reactor Equipment Cooling (REC) System," to allow credit for the ability to align the service water (SW) system to the REC system.
The NRC staff reviewed the information provided in your application and determined that additional information is required in order to complete its review. Please provide a response to the enclosed questions by October 10, 2008.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for NRC staff review and contribute toward the NRC=s goal of efficient and effective use of NRC staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-2296.
Sincerely,
/RA/
Carl F. Lyon, Project Manager Plant Licensing Branch IV Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-298
Enclosure:
Request for Additional Information cc w/encl: See next page
- memo dated OFFICE LPL4/PM LPL4/LA SBPB/BC(A)
LPL4/BC LPL4/PM NAME FLyon GLappert MRahimi(*)
MMarkley FLyon DATE 9/9/08 9/8/08 9/4/08 9/9/08 9/9/08
Cooper Nuclear Station cc:
Mr. Ronald D. Asche President and Chief Executive Officer Nebraska Public Power District 1414 15th Street Columbus, NE 68601 Mr. Gene Mace Nuclear Asset Manager Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Mr. John C. McClure Vice President and General Counsel Nebraska Public Power District P.O. Box 499 Columbus, NE 68602-0499 Mr. David Van Der Kamp Licensing Manager Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Mr. Michael J. Linder, Director Nebraska Department of Environmental Quality P.O. Box 98922 Lincoln, NE 68509-8922 Chairman Nemaha County Board of Commissioners Nemaha County Courthouse 1824 N Street Auburn, NE 68305 Ms. Julia Schmitt, Manager Radiation Control Program Nebraska Health & Human Services R & L Public Health Assurance 301 Centennial Mall, South P.O. Box 95007 Lincoln, NE 68509-5007 Mr. H. Floyd Gilzow Deputy Director for Policy Missouri Department of Natural Resources P.O. Box 176 Jefferson City, MO 65102-0176 Senior Resident Inspector U.S. Nuclear Regulatory Commission P.O. Box 218 Brownville, NE 68321 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 612 E. Lamar Blvd, Suite 400 Arlington, TX 76011-4125 Director, Missouri State Emergency Management Agency P.O. Box 116 Jefferson City, MO 65102-0116 Chief, Radiation and Asbestos Control Section Kansas Department of Health and Environment Bureau of Air and Radiation 1000 SW Jackson Suite 310 Topeka, KS 66612-1366 Ms. Melanie Rasmussen Radiation Control Program Director Bureau of Radiological Health Iowa Department of Public Health Lucas State Office Building, 5th Floor 321 East 12th Street Des Moines, IA 50319 Mr. Keith G. Henke, Planner Division of Community and Public Health Office of Emergency Coordination 930 Wildwood P.O. Box 570 Jefferson City, MO 65102
Cooper Nuclear Station cc:
Mr. Arthur H. Zaremba, Director of Nuclear Safety Assurance Nebraska Public Power District P.O. Box 98 Brownville, NE 68321 Mr. John F. McCann, Director Licensing, Entergy Nuclear Northeast Entergy Nuclear Operations, Inc.
440 Hamilton Avenue White Plains, NY 10601-1813
OFFICE OF NUCLEAR REACTOR REGULATION REQUEST FOR ADDITIONAL INFORMATION RELATED TO REACTOR EQUIPMENT COOLING SYSTEM NEBRASKA PUBLIC POWER DISTRICT COOPER NUCLEAR STATION DOCKET NO. 50-298 By application dated March 24, 2008 to the U.S. Nuclear Regulatory Commission (NRC)
(Agencywide Documents Access and Management System Accession No. ML080910062),
Nebraska Public Power District (NPPD, the licensee) requested NRC staff approval of an amendment to the Cooper Nuclear Station facility operating license and technical specifications (TSs) to revise TS Section 3.7.3, "Reactor Equipment Cooling (REC) System," to allow credit for the ability to align the service water (SW) system to the REC system.
The NRC staff performed a review of the license amendment request (LAR) in the area of balance-of-plant since the proposed TS changes affects the REC system, and requests the following information in order to complete its review.
- 1.
On page 10 of Attachment 1 of the LAR, the licensee provides in Table 1 a comparison of the provisions of the Amendment 185 safety evaluation with Coopers compliance.
Item 2 of on Table 1 cites that calculations have determined that the SW [Service Water]
System can provide sufficient cooling to the essential loads of the REC System, in addition to providing required cooling of SW loads, at any time following a LOCA [Loss-of Coolant-Accident]. Since Amendment 185 was approved in March 2001, discuss how the licensee has confirmed that the earlier calculations made for the SW System have remained valid and if any additional calculations are needed considering the proposed reliance upon operators to perform the cross connection of the REC System to the SW System after a LOCA, if the REC System is inoperable.
- 2.
On page 9 of Attachment 1 of the LAR, the licensee states its preference to use the REC System following a LOCA as opposed to the SW System, which contains silt from the Missouri River. However, the LAR proposes to utilize the SW System at any time to provide cooling water to the ECCS pump room coolers following a LOCA. How does the licensee factor into its calculations the amount of silt being introduced to the ECCS pump room coolers, especially if the SW System can be used at any time after a LOCA? When the SW System is in use, how will the licensee monitor the amount of silt going into the ECCS pump room coolers to ensure proper cooling will be provided throughout the mitigation period of 30 days after a LOCA?
- 3. The licensee proposes to revise Surveillance Requirement (SR) 3.7.3.1 from Verify the REC surge tank water level is within limits to Verify the REC System leakage is within limits. Please provide additional information on why this change is being proposed, including a discussion on the type of REC leakage that is being monitored and how this
would affect the availability of the REC System if the leakage exceeds it limits. Also, if the REC surge tank water level is no longer being monitored due to this proposed SR change, how will this affect the REC System availability when a LOCA occurs? How will monitoring the REC leakage as opposed to the REC surge tank water level be a more conservative means for the operators to decide if the SW System should be used over the REC System in the event of the LOCA?