ML20083P377

Forwards Rev 8 Pages 5-9 & 9-7 for Univ of Fl Training Reactor (Uftr) SAR Dtd Jan 1991,consisting of Changes in Schematics Describing Uftr Secondary Water Cooling Sys to Reflect Mods That Have Been Implemented

ML20083P377
Person / Time
Site:	05000083
Issue date:	05/11/1995
From:	Vernetson W FLORIDA, UNIV. OF, GAINESVILLE, FL
To:	NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NUDOCS 9505240185
Download: ML20083P377 (4)

Text

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E % UNIVERSITY OF b.. FLORIDA Nuclear Reactor Facility 202 Nuclear Sciences Center Department of Nuclear Engineering Sciences P.O. Box 118300 Gainesville, Florida 32611-8300 Tel: (904) 392-1429 Fax: (904) 392-3380 May 11,1995 UFTR Safety Analysis Report Revision 8,5/95 Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555

Dear Sir / Madam:

Re: University of Florida Training Reactor (UFTR)

Facility License: R-56; Docket No. 50-83 The enclosed package contains Revision 8 pages for the UFTR Safety Analysis Report dated January, 1981 submitted as part of our relicensing effort. Revision 8 consists of changes to two pages. The revision has resulted from the need to make certain minor changes in the schematics describing the UFTR Secondary Water Cooling System to reflect modifications that have been implemented. There were no textual changes required in the Safety Analysis Report. All changes have been reviewed by UFTR l management and the UFTR Safety Review Subcommittee and are not considered to involve any unreviewed safety question or to impact the UFTR Safety Analysis as outlined below. l l

The first change is included on Page 5-9 in Figure 5-5 entitled Schematic of UFTR Secondary Water  ;

Cooling System" to reflect installation of a flowmeter and flowswitch and removal of the previously installed slip union and pressure switch for the city water secondary cooling supply line This change  ;

was evaluated and determined not to involve any unreviewed safety questions per 10 CFR 50.59 Number  ;

93-09. I n

JE The second change is included on Page 9-7 in Figure 9-3 entitled "UFTR Secondary Water Cooling l GP System." This change is the same as that described in the previous paragraph. l 00 oo This installation of a flowmeter on the city water side of the secondary piping is to allow an accurate rix determination of flow in the city water cooling mode. The installation of the throttle valve is to allow

% for improved controllable throttling characteristics for the city water cooling mode. This installation was

$@ completed in November,1993.

E gg These changes to the city water secondary cooling system were recommended by the Reactor Safety 0 n. a. Review Subcommittee following an unscheduled trip upon loss of this city water cooling flow during a I g

surveillance (temperature coefficient measurement) conducted on November 18, 1991. Subsequently, these changes were committed to be implemented before the city water cooling mode could be used again per a Final 14-Day Report (Unscheduled Reactor Trip on Loss of Secondary Flow) submitted to the Nuclear Regulatory Commission and dated November 27,1991.

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6-2 USNRC May 11,1995 ,

As indicated, these Revision 8 changes have been fully reviewed by UFTR management and by the Reactor Safety Review Subcommittee to assure no unreviewed safety questions were involved per a 10 CFR 50.59 evaluation and determination and so are not considered to relax the requirements for ,

assuring protection of the health and safety of the public and of the reactor factity. The changes simply i update the Safety Analysis Report.

The entire enclosure consists of one signed original letter of transmittal with enclosure plus ten copies l of the entire package. If further information is required, please rAvise.

Sincerely, kg William G. Vernetson Director of Nuclear Facilities WGV/dms Enclosures Copies: USNRC Region 11 T. Michaels, NRC Senior Project Manager Reactor Safety Review Subcommittee D. Simpkins, UFTR Reactor Manager -

Sworn and subscribed this i bday of May,1995.  ;

thibom .

/ Notary 'PuQ JOAN N 8E W COMheS$10N f CC302416 EXMRES i August 27,1997 -

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