ML101590221

University of Florida Training Reactor, Submittal of License Renewal Request

ML101590221
Person / Time
Site:	05000083
Issue date:	06/01/2010
From:	Haghighat A Univ of Florida
To:	Duane Hardesty Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC ME1586
Download: ML101590221 (2)

Text

U UNIVERSITY of UFFLORIDA College of Engineering Department of Nuclear & Radiological Engineering University of Florida Training Reactor 202 Nuclear Science Bldg.

PO Box 118300 Gainesville, FL 32611-8300 352-392-1401 x306 352-392-3380 Fax haghighat@ufl.edu June 1, 2010 Document Control Desk U.S, Nuclear Regulatory Commission Washington, DC 20555 Attn: Mr. Duane Hardesty

Subject:

University of Florida Training Reactor (UFTR) License Renewal (TAC NO. ME 1586),

DOCKET NO. 50-83 Enclosedis a document provide bases for Chapter 5 for renewal of Facility Operating License No. R-56 for the Pniversity: of Florida Thaining Reactor (UFTR).

If you need further information, please do not hesitate to contact me at haghighat@ufl.edu or (352) 392-1401 x306.

I declare under penalty of perjury that the foregoing is true and correct.

Executed on June 1, 2010 Sincerely Alireza Haghighat, Phl5 FP&L Endowed Chair Professor Director of UFTR 71L L2t* Lisa L. Purvis Comntssion # DD60W673

ý A Expires November 3, 2010

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Cc Jack Donohue, NRC Gabriel Chita, UF David Hintenlang, Interim Chair, Brian' Shea, UFTR Manager Glenn Sjoden, RSRS Chair UFTR - NRC file The Foundation for The Gator Nation An Equal Opportunity Institution A 0 2J

Bases for Section 5 (titled 'Design Features') of the UFTR's Technical Specifications The UFTR uses an Argonaut design, which offers significant safety and security features.

On the safety, the residual heat in the fuel is very low, thereby resulting in a unique shut down mechanism in the form of dumping of the coolant/moderation water. On the security, besides a secure confinement building and separation of the reactor cell from the other offices and labs of the reactor building, the reactor core is placed under -50 tons of concrete, and the fuel is dispersed in an aluminum plate with aluminum cladding.

The primary cooling system is designed such that the reactor core is kept at low pressures and temperatures. This is achieved by the proper arrangement of the fuel bundles in a fuel box, which results in prevention of occurrence of local boiling at the maximum power; i.e., the combinations of coolant flow-rate, inlet coolant temperature, and the maximum operating power, keeps the system away from the Onset of Nuclear Boiling (ONB). The secondary cooling system provides the necessary mechanisms for the removal of heat from the primary cooling system and the isolation of the primary coolant from the environment and public. Aforementioned features further contribute to the safety margins of the UFTR.

Finally, the fuel storage facilities of the UFTR have been designed for maintaining a highly subcritical condition even under a flooding event.