ML042400161
| ML042400161 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 08/27/2004 |
| From: | Michelle Honcharik NRC/NRR/DLPM/LPD4 |
| To: | Edington R Nebraska Public Power District (NPPD) |
| Honcharik M, NRR/DLPM, 301-415-1774 | |
| References | |
| TAC MC3770 | |
| Download: ML042400161 (6) | |
Text
August 27, 2004 Mr. Randall K. Edington Vice President-Nuclear and CNO Nebraska Public Power District P. O. Box 98 Brownville, NE 68321
SUBJECT:
COOPER NUCLEAR STATION - REQUEST FOR ADDITIONAL INFORMATION RE: ONE TIME EXTENSION OF DIESEL GENERATOR ALLOWED OUTAGE TIME (TAC NO. MC3770)
Dear Mr. Edington:
Nebraska Public Power District (the licensee) requested the Nuclear Regulatory Commission (NRC) staff approve one time extension of diesel generator allowed outage time.
The NRC staff has reviewed the information provided in the July 15, 2004, submittal and determined that additional information is required in order to complete the review of the changes. As agreed upon with Ed McCutchen on August 24, 2004, the licensee will respond to the request for additional information (RAI) within 30 days. The RAI is enclosed.
Sincerely,
/RA/
Michelle C. Honcharik, Project Manager, Section 1 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-298
Enclosure:
RAI cc w/encl: See next page
August 27, 2004 Mr. Randall K. Edington Vice President-Nuclear and CNO Nebraska Public Power District P. O. Box 98 Brownville, NE 68321
SUBJECT:
COOPER NUCLEAR STATION - REQUEST FOR ADDITIONAL INFORMATION RE: ONE TIME EXTENSION OF DIESEL GENERATOR ALLOWED OUTAGE TIME (TAC NO. MC3770)
Dear Mr. Edington:
Nebraska Public Power District (the licensee) requested the Nuclear Regulatory Commission (NRC) staff approve one time extension of diesel generator allowed outage time.
The NRC staff has reviewed the information provided in the July 15, 2004, submittal and determined that additional information is required in order to complete the review of the changes. As agreed upon with Ed McCutchen on August 24, 2004, the licensee will respond to the request for additional information (RAI) within 30 days. The RAI is enclosed.
Sincerely,
/RA/
Michelle C. Honcharik, Project Manager, Section 1 Project Directorate IV Division of Licensing Project Management Office of Nuclear Reactor Regulation Docket No. 50-298
Enclosure:
RAI cc w/encl: See next page DISTRIBUTION:
PUBLIC PDIV-1 r/f RidsNrrDlpmLpdiv (HBerkow)
RidsNrrDlpmLpdiv1 (RGramm)
RidsNrrPMMHoncharik RidsNrrLADBaxley RidsAcrsAcnwMailCenter RidsOgcRp RidsRgn4MailCenter (KKennedy)
RidsNrrDlpmDpr (SWall)
RidsNrrDeDpr Jai Rajan Thomas Koshy Ronaldo Jenkins PGill ACCESSION NO: ML042400161
- See Tad Marsh Deferral Memo
- No substantive changes OFFICE PDIV-1/PM PDIV-1/LA EEIB/SC PDIV-1/SC NAME MHoncharik DBaxley RJenkins RGramm DATE 8/26/04 N/A*
8/16/04*
8/26/04 OFFICIAL RECORD COPY
Cooper Nuclear Station cc:
Mr. William J. Fehrman President and Chief Executive Officer Nebraska Public Power District 1414 15th Street Columbus, NE 68601 Mr. Clay C. Warren Vice President of Strategic Programs Nebraska Public Power District 1414 15th Street Columbus, NE 68601 Mr. John R. McPhail, General Counsel Nebraska Public Power District P. O. Box 499 Columbus, NE 68602-0499 Mr. Paul V. Fleming 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. Cheryl K. Rogers, Program Manager Nebraska Health & Human Services System Division of Public Health Assurance Consumer Services Section 301 Centennial Mall, South P. O. Box 95007 Lincoln, NE 68509-5007 Mr. Ronald A. Kucera, Director of Intergovernmental Cooperation Department of Natural Resources P.O. Box 176 Jefferson City, MO 65102 Senior Resident Inspector U.S. Nuclear Regulatory Commission P. O. Box 218 Brownville, NE 68321 Regional Administrator, Region IV U.S. Nuclear Regulatory Commission 611 Ryan Plaza Drive, Suite 400 Arlington, TX 76011 Jerry Uhlmann, Director State Emergency Management Agency P. O. Box 116 Jefferson City, MO 65101 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 Mr. Daniel K. McGhee Bureau of Radiological Health Iowa Department of Public Health 401 SW 7th Street Suite D Des Moines, IA 50309 Mr. Scott Clardy, Director Section for Environmental Public Health P.O. Box 570 Jefferson City, MO 65102-0570
Cooper Nuclear Station Jerry C. Roberts, Director of Nuclear Safety Assurance Nebraska Public Power District P.O. Box 98 Brownville, NE 68321
ENCLOSURE REQUEST FOR ADDITIONAL INFORMATION ISSUES RELATED TO ONE TIME EXTENSION OF DIESEL GENERATOR ALLOWED OUTAGE TIME COOPER NUCLEAR STATION DOCKET NO. 50-298 1.
Discuss and provide information on the reliability of the transfer scheme from normal station service transformer (NSST) to startup station service transformer (SSST) relating to the proposed change. The discussion should include transfer time, cause, date and time of each transfer and any failures in the scheme to transfer successfully. In case of failure of the transfer from the NSST to SSST, how long does it take to transfer the 4.16 kV safety buses to emergency station service transformer (ESST). Discuss whether the transfer from SSST to ESST is automatic or manual.
2.
It is NRC staffs understanding that the purpose of the requested amendment is to allow an increased outage time during plant power operation for corrective maintenance to the fuel oil storage tanks and transfer system. Provide information on tests to be performed after the corrective maintenance to the fuel oil storage tanks and transfer system is completed in order to declare the diesel generator (DG) operable. Provide justification for performing those tests at power.
3 What type of communication has been established between the control room operator at Cooper Nuclear Station and the System Load Dispatcher? Is the System Load Dispatcher notified in advance that the DG is going to be out for extended period of time?
4.
Other licensees who requested for DG allowed outage time (AOT) extension provided the following Regulatory Commitments in their requests:
A.
Weather conditions will be evaluated prior to entering the extended DG AOT for voluntary planned maintenance. An extended DG AOT will not be entered for voluntary planned maintenance purposes if official weather forecasts are predicting severe conditions (tornado or thunderstorm warnings).
B.
The condition of the offsite power supply and switchyard will be evaluated prior to entering the extended AOT.
C..
No discretionary switchyard maintenance will be allowed. In addition, no discretionary maintenance will be allowed on the main, auxiliary or startup transformers associated with the unit.
D.
No maintenance or testing that affects the reliability of the train associated with the OPERABLE DG will be scheduled during the extended AOT. If any testing and maintenance activities must be performed while the extended AOT is in effect, an evaluation will be performed in accordance with Section 50.65(a)(4) of Title 10 of the Code of Federal Regulations (10 CFR).
E.
The steam driven emergency feedwater pump will not be taken out of service for planned maintenance activities and will be treated as protected equipment.
F.
The system dispatcher will be contacted once per day and informed of the DG status along with the power needs of the facility.
G.
The on-shift Operations crews will discuss and review appropriate normal and emergency operating procedures upon or prior to assuming the Watch for the first time after having scheduled days off while the AOT is in effect.
H.
The Operations crews will be briefed concerning the unit activities, including compensatory measures established following instruction of the Shift Manager upon the loss of power event. This briefing will be performed upon or prior to assuming the Watch for the first time after having scheduled days off while the AOT is in effect.
Please provide the provisions, limitations and compensatory actions with respect to the above that NPPD will be committing to implement to assure adequate defense in depth, during the extended DG AOT.
6.
Discuss regulatory commitments to implement other restrictions and compensatory measures during the extended AOT that would ensure the availability of the remaining sources of power to minimize the occurrence of an station black out and ensure compliance with the requirements of 10 CFR Part 50, Appendix A, General Design Criterion (GDC) 17, Electric power systems and GDC 18, Inspection and testing of electric power systems.
7.
Discuss whether the temporary tubing from the temporary tank will remain connected to the day tank supply line during the DG AOT. Additionally, discuss how the temporary tubing and its routing will be protected from site traffic and ongoing maintenance and construction activities.