ML24185A040

Univ. of Florida, Transmittal of CY2023 Annual Report for the Uftr

ML24185A040
Person / Time
Site:	05000083
Issue date:	06/30/2024
From:	Shea B Univ of Florida
To:	Office of Nuclear Reactor Regulation, Document Control Desk
References
Download: ML24185A040 (1)

Text

Herbert Wertheim College of Engineering PO Box 116134 UF Training Reactor Facility Gainesville, FL 32611 352-294-2104 bshea@ufl.edu

June 30, 202 4

ATTN: Document Control Desk Technical Specifications 6.7.1 U.S. Nuclear Regulatory Commission License R-56, Docket 50-83 Washington, DC 20555-0001

Subject:

CY20 2 3 Annual Report for the UFTR

Please find enclosed the UFTR annual report for calendar year 20 2 3. This report is being submitted as required by our Technical Specifications, Section 6.7.1.

I declare under penalty of perjury that the foregoing and attached are true and correct to my knowledge.

Executed on June 30, 202 4.

Brian Shea Reactor Manager, University of Florida Training Reactor

cc: Duane Hardesty, Project Manager, NRC

The Foundation for The Gator Nation

An Equal Opportunity Institution University of Florida Training Reactor

Annual Report for Calendar Year 20 2 3

The following annual report is submitted in accordance with Section 6.7.1 of the UFTR Technical Specifications.

Summary of Reactor Operations:

Total Energy Output for CY20 2 3 : 8,136 kW-hrs

Cumulative Energy Output Since Conversion to LEU: 96,838 kW-hrs

Routine operations were conducted throughout the year with brief outages for maintenance and surveillances.

Unscheduled Shutdowns:

There w as one unscheduled shutdown during CY20 2 3. On June 7, an unscheduled shutdown occurred during an up-power transient to 100 kW. The reactor trip occurred at 15 watts due to loss of electrical power to the Stack Dilute Fan, blown fuses were the cause. The fuses were replaced and normal operations resumed.

Major Maintenance:

A listing of all major maintenance is presented in Table I. T he Date Opened entry is when the Maintenance Log Page (MLP) was opened; in a few cases, this date may be one or more days after the original problem was noted. The Date Closed entry is the day the MLP was closed which can also be one or more days after work completion.

Table I

MLP # Date Opened Date Closed Summary 2 3 -1 3 /6 /202 3 3 /6 /202 3 Routine addition of makeup water to the PC Tank.

2 3 -2 5 /3 /202 3 5 /10/202 3 C ore Vent Damper Motor replacement.

2 3 -3 5 /2 3/202 3 5 /2 3/202 3 Replaced S hield tank filters.

2 3 -4 5 /23 /202 3 5 /23 /202 3 Routine addition of makeup water to the PC Tank.

2 3 -5 7 /1 7 /202 3 12 /4/202 3 Stack Dilute fan motor wiring, fuse block, and contacter replacement.

2 3 -6 7 /2 6 /202 3 7 /2 6 /202 3 Routine addition of makeup water to the Shield Tank.

2 3 -7 8/1 6 /202 3 8/1 6 /202 3 Routine addition of makeup water to the PC Tank.

2 3 -8 11 /27 /202 3 11 /27 /202 3 Routine addition of makeup water to the PC Tank.

CY20 2 3 Annual Report Page 1 of 3 University of Florida Training Reactor June 30, 202 4 Changes, Tests, and Experiments Implemented under 10 CFR 50.59:

A listing of changes, tests, and experiments implemented under 10 CFR 50.59 is presented in Table II. All changes, tests, and experiments implemented during CY20 2 3 screened-out from full evaluation.

Table II

Number Date Summary Approved 2 3 -1 1 /1 3 /202 3 Procedure Change: SOP- 0.5 QA Program, change frequency of radiological surveys.

2 3 -2 1 /1 3 /202 3 Procedure Change: RCT#17 Accuracy check of SRPDs, change frequency of checks.

2 3 -3 1 /1 3 /202 3 Procedure Change: RCT#31 UFTR Environmental Surveys, change frequency of radiological surveys.

2 3 -4 1 /1 3 /202 3 Procedure Change: RCT#34 PAS Air flow rate determination, change frequency of determination.

2 3 -5 2 /1 3 /202 3 Experiment : In-situ electrical performance of memory under mixed radiation.

2 3 -6 2 /1 3 /202 3 Experiment : NAA of NASA samples in shield tank and beam ports.

2 3 -7 2 /2 3 /202 3 Modification : Install signal connections for future display of Log-N and Linear power indications.

2 3 -8 10 /26 /202 3 Modification : Install new rabbit system and Rev to SOP-A.8.

2 3 10 /26 /202 3 Procedure Change s : Revisions to SOP- 0.1, 0.2, 0.4, 0.5, 0.8, B.1, D.1, D.4, 23-19 D.6, RCT#31, and remove RCT#37.

2 3 12/18/23 Procedure Change s : Revisions to SOP-0.3, 0.6, 0.7, 0.9, 0.10, B.2, B.4, D.2, 23-30 D.3, D.5, D.7.

Radioactive Effluents:

Liquid Waste No wastewater releases were made during CY20 2 3.

Gaseous Waste The total activity of Argon-41 released during CY20 2 3 was 37.66 curies. Using the calculation method described in the UFSAR, the maximum potential dose to a member of the public from UFTR Ar-41 emissions during CY20 2 3 w as 0. 2 mr em/year. This is significantly less than 25% of the ALARA constraint of 10 mrem/yr.

CY20 23 Annual Report Page 2 of 3 University of Florida Training Reactor June 30, 202 4 Environmental Surveys:

In addition to periodic radiation surveys using hand-held instruments, environmental monitoring is accomplished using radiation dosimeter badges. Areas monitored are located around the exterior of the Reactor Building (RB) and nearby buildings, including the Nuclear Sciences Building (NSB), the R hines Hall (R H ), Weil Hall (WH), Weimer Hall (WmH), and Wertheim Engineering Lab (WEL ). The environmental dosimeter reports are tabulated and presented in Table III. Dose equivalents below the minimum measurable quantity are reported as M.

Table III

Quarterly TEDE Annual TEDE Area (mrem) (mrem)

Oct-Jan-Mar Apr-Jun Jul-Sep Dec

1. NSB Rm. 316 window - inside 17 M M M 17

2. NSB, NW corner of Van de graff roof 26 2 4 6 38

3. UFTR West Lot, fence post 40 2 6 6 54

4. R H roof, SE roof corner near access 1 3 M M 2 15

5. R H roof, above N entrance to bldg 26 M 3 4 33

6. W H roof, SE corner of main roof 29 M M M 29

7. W H roof, near roof access door 19 M M M 19

8. W H roof, due N of bldg 25 22 1 3 7 33

9. W H roof, SE corner of SW roof section 39 M M 2 41

10. W mH, 3 rd floor roof, SW corner 18 M M 2 20

11. WmH Extension roof, SW corner 21 M 1 2 24

12. WmH Extension roof, NW corner 29 M 3 5 37

13. W E L roof, N side of Level 7 14 M 1 M 15

Radiation Exposures:

There were no exposures received by facility personnel or visitors that were greater than 25% of that allowed in 10 CFR Part 20. Eight individuals received measurable occupational exposures during CY20 2 3.

The maximum Total Effective Dose Equivalent (TEDE) received by any individual in CY20 2 3 was 45 mrem. The maximum extremity dose (SDE, ME) received by any individual in CY20 2 3 was 72 mrem.

CY20 23 Annual Report Page 3 of 3 University of Florida Training Reactor June 30, 202 4