ML100750242
| ML100750242 | |
| Person / Time | |
|---|---|
| Site: | 05000083 |
| Issue date: | 03/05/2010 |
| From: | Haghighat A Univ of Florida |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML100750242 (8) | |
Text
U UNIVERSITY 9f College of Engineering 202 Nuclear Sciences Bldg.
Department of Nuclear & Radiological Engineering PO Box 118300 UFTR Nuclear Facilities Gainesville, FL 32611-8300 352-392-1401 x306 352-392-3380 Fax haghighat@ufl.edu March 5, 2010 Document Control Desk U.S. Nuclear Regulatory Commission One White Flint North 11555 Rockville Pike Rockville, MD 20852-2738
SUBJECT:
Annual Report for University of Florida Training Reactor, License R-56, Docket 50-83 Please find enclosed the annual report for University of Florida Training Reactor, Docket No. 50-
- 83. This report is being submitted as required by our Technical Specifications, Section 6.6.1. If you have questions on the content of this report, please contact Dr. Alireza Haghighat, Director of the University of Florida Training Reactor, at 352-392-1401 x306.
I declare under penalty of perjury that the foregoing is true and correct.
Executed on March 5, 2010.
Sincerely, l~~Lisa L. Purvis h
4 Expires November 3,2010 If N08o~ded TinyFain -Insurance, ine 8OO-3857D19 Alireza Haghighat, PhD FP&L Endowed Professor Director of UFTR T11o JPnii-dnfimifriw T71o C-nfn Nlfifini t\)
UNIVERSITY OF FLORIDA TRAINING REACTOR ANNUAL PROGRESS REPORT SEPTEMBER 1, 2008 - AUGUST 31, 2009 Submitted by Dr. Alireza Haghighat Director of UFTR Prepared by Brian Shea Manager of UFTR Department of Nuclear and Radiological Engineering University of Florida Gainesville, Florida March 2010
Introduction As stated in the University of Florida Training Reactor (UFTR) Technical Specifications, Section 6.6.1 Operating Report, routine annual reports covering the activities of the reactor facility during the previous calendar year shall be submitted to the Commission within nine (6) months following the end of each prescribed year. The prescribed year ends August 31 for the UFTR. This annual operating report includes 7 sections:
(1) a narrative summary of reactor operating experience including the energy produced by the reactor and the hours the reactor was critical; (2) the unscheduled shutdowns including, where applicable, corrective actions taken to preclude recurrence; (3) tabulation of major preventive and corrective maintenance operations having safety significance; (4) tabulation of major changes in the reactor facility and procedures, and a tabulation of new tests or experiments, that are significantly different from those performed previously and are not described in the Safety Analysis Report, including conclusions that no unreviewed safety questions were involved; (5) A summary of the nature and amount of radioactive effluents released or discharged to the environs beyond the effective control of the facility operators as determined at or before the point of such release or discharge. (The summary shall include to the extent practicable an estimate of individual radionuclides present in the effluent. If the estimated average release after dilution or diffusion is less than 25% of the concentration allowed, a statement to this effect is sufficient.);
(6) A summarized result of environmental surveys performed outside the facility; (7) A summary of exposure received by facility personnel and visitors where such exposures are greater than 25% of that allowed.
The following discussion on the above seven sections covers the period from September 1, 2008 to August 31, 2009, except as noted otherwise.
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- 1. Summary of Operation Experience In the past reporting year, UFTR has undergone major maintenance with modifications to the primary coolant piping to ensure continued operation in the future.
The UFTR staff will have the reactor operational by early 2010 to ensure the UFTR continues to function as a reliable and productive facility with a broad range of research and educational utilizations by users within University of Florida as well as researchers and educators around the State of Florida.
The generated energy and operation hours in this year are given as follows:
Energy generated: 647.111 KWH Reactor Run Time: 14.8 hrs
- 2. Unscheduled Shutdowns From September 1, 2008 to August 31, 2009 there were 2 unplanned shutdowns, each one summarized in the table below.
Table I - Unplanned shutdowns in 2008-09 Reason Corrective Action 10/14/08: Wide Range power indication on Performed unscheduled shutdown. Further chart recorder (green pen) erratic and investigation revealed loose connection to indicating low value compared to actual recorder. Connection tightened and
(<1 watt vs. 100 kW). performed successful pre-operational checks.
10/30/08: Linear (red pen) range signal not Performed unscheduled shutdown. Further responding to increase in power at 0.4 investigation revealed CIC insulation watts. failure. Replacement CIC will be installed and tested as-part of recovery in early 2010.
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- 3. Safety Related Maintenance Operations
- 1) 10/08 - present: Primary coolant system piping replacement due to discovered leak in outlet piping. Reactor fuel removed and piping system redesigned to ensure full inspections of piping in the future and to accommodate new instrumentation.
- 2) 12/08 - present: S-2 control blade failed to drop during maintenance activity. Reactor scheduled to be defueled and opened to investigate primary piping issue. Investigation and repair of S-2 accomplished during the reactor outage.
- 4. Major Changes in Reactor Facility, Procedures and Experiments Primary coolant piping modification and installation is ongoing during FY08-09.
Modification of piping consists of rerouting outlet piping to ensure full integrity inspections in the future and the addition of instrumentation ports on the outlet headers.
- 5. Radioactive Effluents Liquid release:
UFTR is equipped with a waste water holdup tank. The tank is released two or three times per year. The radioactivity in the released water is measured. Wastewater shall be sampled and monitored prior to tank discharge. No isotopic analysis is required if the estimated average release concentration is less than 25% of the concentration limit.allowed in 10CFR20, Appendix B, Table 2. The current limit is 5.OE-9 *WCi/mL for releases to the sanitary sewer. Table II presents the amount and activity of the released waste water Table II - Amount and activity of the released waste water Time period (mm.dd.yyyy) Water released (Gallon) Activity released (gCi/mL) 04.15.2008 - 11.13.2008 908.7 1.59E-9 Argon-41 Release:
The Argon-41 release concentration is measured about every six months. The annual Argon-41 release is estimated by the measurement and operation hours. Discharge concentrations of Ar-41 shall not exceed 1.OE-8 gCi/mL per 10CFR20 Appendix B, Table 2 when averaged over 30 days.
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Table III gives the measured instantaneous concentration of Ar-41, and the calculated Ar-41 release concentration per kW-hr.
Table IV presents the monthly average concentration of Ar-41 for the actual power generated, and the amount of release for 720 hrs of full-power operation.
Table III - UFTR Gaseous Release Data Table Month(s) Releases per Unit Energy Instantaneous Ar-41 Conc. at Generation (ýiCi/kW-hr) Full Power (gCi/mL)
Sep. 2008 4756.73 9.77E-08 Oct. 2008- Aug. 2009 4783.54 1.05E-07 Table IV - UFUR Gaseous Release Summary Month Release (gCi/month) Monthly Average Concentration (XCi/mL)
September 2008 2.2647 x 105 6.4606 x 10-l" October,2008 2.8677 x 106 8.7427 x 10-"
November 2008 0 0 December 2008 0 0 January 2009 0 0 February 2009 0 0 March 2009 0 0 April 2009 0 0 May 2009 0 0 June 2009 0 0 July 2009 0 0 August 2009 0 0 Average for the Year 7.8240xl0-"
Based on the data given in Table IV, the total amount of Ar-41 release over the year is 3.09 Ci.
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- 6. Environmental Surveys The firm maintaining radiation records for the University of Florida keeps a year to date record, therefore it is easier to report radiation exposure by the nearest completed calendar year. The following film badge exposures are for the period January 1, 2008 to December 31, 2008. Thirteen areas (Numbered from 1 to 13) were monitored for the entire calendar year. A list of these numbered areas can be found in UFTR SOP. Reactor cell is separately monitored during the same time period. The area radiation exposures are tabulated below.
Table V - Total Effective Dose Equivalent (TEDE) at different locations*
Area No. TEDE (mrem) 1 22 2 39 3 <1 4 <1 5 8 6 2 7 11 8 <1 9 <1 10 <1 11 <1 12 <1 13 <1 Reactor Control 2
- These measurements are performed by the Radiation Control Office of the Environmental Health & Safety Division at the University of Florida The area badges are meant to indicate exposures due to normal reactor operations.
The elevated values can be attributed to normal operations and to the reactor being disassembled for maintenance early in 2008.
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- 7. Radiation Exposures Note that UFTR Technical Specifications requires only a summary of exposure received by facility personnel and visitors where such exposures are greater than 25% of that allowed. Since all personnel exposures during this period are below the limits, we provide an exposure summary for the UFTR staff The following table illustrates the radiation dosages of 5 workers for the period January 1, 2008 to December 31, 2008. All the dosages are in mrem.
Table VI - Total Effective Dose Equivalent (TEDE) for the UFTR staff Individual TEDE (mrem)
Berglund, M. 135 Vemetson, W. 154 Yenatskyy, M. 6 Sly, <1 Shea, B. 4 6