ML16048A024
| ML16048A024 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 02/23/2016 |
| From: | Lyon C Plant Licensing Branch IV |
| To: | Marik S Omaha Public Power District |
| Lyon C, NRR-DORL 415-2296 | |
| References | |
| CAC MF6722, TSTF-501, Rev 1 | |
| Download: ML16048A024 (4) | |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 FEbnmy 23, 2016 Mr. Shane M. Marik Site Vice President and Chief Nuclear Officer Omaha Public Power District Fort Calhoun Station 9610 Power Lane, Mail Stop FC-2-4 Blair, NE 68008
SUBJECT:
FORT CALHOUN STATION, UNIT NO. 1 -REQUEST FOR ADDITIONAL INFORMATION RE: ADOPTION OF TSTF-501, REVISION 1 (CAC NO. MF6722)
Dear Mr. Marik:
By letter dated September 11, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15254A464}, Omaha Public Power District submitted a license amendment request to adopt Technical Specifications Task Force (TSTF) Traveler TSTF-501, Revision 1, "Relocate Stored Fuel Oil and Lube Oil Volume Values to Licensee Control," at Fort Calhoun Station, Unit No. 1.
The U.S. Nuclear Regulatory Commission staff has reviewed the information provided in your application and determined that additional information is required in order to complete its formal review of your request. The enclosed questions were provided to E. Matzke of your staff on February 17, 2016. Please provide a response to the enclosed questions within 45 days of the date of this letter. If you have any questions, please contact me at 301-415-2296 or via e-mail at Fred.Lyon@nrc.gov.
Docket No. 50-285
Enclosure:
Request for Additional Information cc w/encl: Distribution via Listserv Sincerely, Carl F. Lyon, Project Manager Plant Licensing Branch IV-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation
REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST OMAHA PUBLIC POWER DISTRICT FORT CALHOUN STATION, UNIT NO. 1 DOCKET NO. 50-285 By letter dated September 11, 2015 (Agencywide Document Access and Management System (ADAMS) Accession No. ML15254A464), Omaha Public Power District (the licensee) submitted a license amendment request to adopt Technical Specifications Task Force (TSTF) Traveler TSTF-501, Revision 1, "Relocate Stored Fuel Oil and Lube Oil Volume Values to Licensee Control," at Fort Calhoun Station, Unit No. 1 (FCS).
The U.S. Nuclear Regulatory Commission staff has reviewed the information provided in the application and determined that additional information is required in order to complete its formal review of the request.
RAI EPNB-1 The submittal states that storage tanks F0-1 and F0-10 are both 18,000 gallon storage tanks.
Please provide the usable capacity of each tank. If the usable capacity is greater than 16,000 gallons, discuss why more than 16,000 gallons cannot be stored in the tank to provide more margin for emergency diesel generator (EOG) testing.
RAI EPNB-2 In Section 3.0 of the submittal it states, in part that:
Since no piping existed between F0-1 and F0-10, operator action would be credited for the installation of a hose between the two tanks to allow transfer of fuel from F0-10 to F0-1 using a small motor-driven pump, (i.e., F0-37), which was originally installed to transfer fuel between F0-10 and the diesel driven auxiliary feedwater pump, FW-54. In the event of a failure of F0-37, a backup method of fuel transfer between the two tanks was a manually operated portable pump that required no external power source.
Please discuss how fuel will be transferred from F0-10 to F0-1 when pump F0-37 is in operation pumping fuel to the diesel driven auxiliary feedwater pump. Provide the flow rates of pump F0-37 and the manually operated portable pump.
RAI EPNB-3 Please provide the justification for selecting a 3 percent margin for stored fuel oil for EOG testing instead of the 10 percent margin required by the American Nuclear Standards Institute (ANSI) Standard N195-1976.
Enclosure RAI EPNB-4 In Section 3.0 of the submittal, it states that the EOG fuel consumption calculation was revised to address the use of Ultra Low Sulfur Diesel fuel. The American Society for Testing and Materials (ASTM) D-975 allows up to 5 percent biodiesel in normal diesel fuel oil without labeling. Please discuss whether or not the EOG fuel consumption calculation accounts for this 5 percent biodiesel in the fuel oil, which could cause an increase in EOG fuel consumption.
RAI EPNB-5 In Section 4.0 of the submittal, it states that if 3,000 gallons (16,000 gallons F0-10 inventory minus 13, 000 gallons dedicated to the EOG) of fuel oil in F0-10 is dedicated to the auxiliary boiler, its operating time is reduced to 20 hours2.314815e-4 days <br />0.00556 hours <br />3.306878e-5 weeks <br />7.61e-6 months <br /> at maximum fuel consumption rates. In Section 3.0, it states that, in 2002, it was recognized that the auxiliary feedwater pump diesel engine consumes fuel oil from the F0-10 tank. Please explain how the auxiliary feedwater pump diesel engine fuel oil consumption is accounted for if is not included in the 3,000 gallons of fuel oil dedicated to the auxiliary boiler.
RAI EPNB-6 In Section 4.0 of the submittal, it states that the auxiliary boiler is not specifically credited for operation to mitigate design basis events. If it is not credited for operation to mitigate design basis events, please explain why fuel oil in tank F0-10 is reserved for the auxiliary boiler and cannot be reserved for the EOG.
- email dated OFFICE NRR/DORULPL4-1 /PM NRR/DORL/LPL4-1 /LA NRR/DE/EPNB/BC N RR/DORL/LPL4-1 /BC NRR/DORL/LPL4-1 /PM NAME Fl yon JBurkhardt DAiiey*
RPascarelli Fl yon DATE 2/22/16 2/18/16 2/12/16 2/23/16 2/23/16