ML24185A040
| 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 UF Training Reactor Facility PO Box 116134 Gainesville, FL 32611 352-294-2104 bshea@ufl.edu June 30, 2024 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:
CY2023 Annual Report for the UFTR Please find enclosed the UFTR annual report for calendar year 2023. 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, 2024.
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 2023 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 CY2023:
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 was one unscheduled shutdown during CY2023. 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. The 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 23-1 3/6/2023 3/6/2023 Routine addition of makeup water to the PC Tank.
23-2 5/3/2023 5/10/2023 Core Vent Damper Motor replacement.
23-3 5/23/2023 5/23/2023 Replaced Shield tank filters.
23-4 5/23/2023 5/23/2023 Routine addition of makeup water to the PC Tank.
23-5 7/17/2023 12/4/2023 Stack Dilute fan motor wiring, fuse block, and contacter replacement.
23-6 7/26/2023 7/26/2023 Routine addition of makeup water to the Shield Tank.
23-7 8/16/2023 8/16/2023 Routine addition of makeup water to the PC Tank.
23-8 11/27/2023 11/27/2023 Routine addition of makeup water to the PC Tank.
CY2023 Annual Report Page 1 of 3 University of Florida Training Reactor June 30, 2024
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 CY2023 screened-out from full evaluation.
Table II Number Date Approved Summary 23-1 1/13/2023 Procedure Change: SOP-0.5 QA Program, change frequency of radiological surveys.
23-2 1/13/2023 Procedure Change: RCT#17 Accuracy check of SRPDs, change frequency of checks.
23-3 1/13/2023 Procedure Change: RCT#31 UFTR Environmental Surveys, change frequency of radiological surveys.
23-4 1/13/2023 Procedure Change: RCT#34 PAS Air flow rate determination, change frequency of determination.
23-5 2/13/2023 Experiment: In-situ electrical performance of memory under mixed radiation.
23-6 2/13/2023 Experiment: NAA of NASA samples in shield tank and beam ports.
23-7 2/23/2023 Modification: Install signal connections for future display of Log-N and Linear power indications.
23-8 10/26/2023 Modification: Install new rabbit system and Rev to SOP-A.8.
23 23-19 10/26/2023 Procedure Changes: Revisions to SOP-0.1, 0.2, 0.4, 0.5, 0.8, B.1, D.1, D.4, D.6, RCT#31, and remove RCT#37.
23 23-30 12/18/23 Procedure Changes: Revisions to SOP-0.3, 0.6, 0.7, 0.9, 0.10, B.2, B.4, D.2, D.3, D.5, D.7.
Radioactive Effluents:
Liquid Waste No wastewater releases were made during CY2023.
Gaseous Waste The total activity of Argon-41 released during CY2023 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 CY2023 was 0.2 mrem/year. This is significantly less than 25% of the ALARA constraint of 10 mrem/yr.
CY2023 Annual Report Page 2 of 3 University of Florida Training Reactor June 30, 2024
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 Rhines Hall (RH), 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 Area Quarterly TEDE (mrem)
Annual TEDE (mrem)
Jan-Mar Apr-Jun Jul-Sep Oct-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. RH roof, SE roof corner near access 13 M
M 2
15
- 5. RH roof, above N entrance to bldg 26 M
3 4
33
- 6. WH roof, SE corner of main roof 29 M
M M
29
- 7. WH roof, near roof access door 19 M
M M
19
- 8. WH roof, due N of bldg 25 22 1
3 7
33
M 2
41
- 10. WmH, 3rd 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. WEL 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 CY2023.
The maximum Total Effective Dose Equivalent (TEDE) received by any individual in CY2023 was 45 mrem. The maximum extremity dose (SDE, ME) received by any individual in CY2023 was 72 mrem.
CY2023 Annual Report Page 3 of 3 University of Florida Training Reactor June 30, 2024