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Category:Annual Operating Report
MONTHYEARML24092A0422024-03-28028 March 2024 U.S. Geological Survey Triga Reactor Annual Report Submittal in Accordance with Technical Specification 6.7.1 Rev. 00 for 2023 ML23087A1012023-03-28028 March 2023 U.S. Geological Survey Triga Reactor, Annual Report Submittal in Accordance with Technical Specification 6.7.1 Rev. 00 ML21090A1912021-03-29029 March 2021 U.S. Geological Survey Triga Reactor, Annual Report Submittal in Accordance with Technical Specification 6.7.1 Rev. 00 ML20136A3362020-04-21021 April 2020 Us Dept. of Interior, Geological Survey (Usgs), Submittal of Corrected 2019 Annual Report ML20087H0192020-03-0202 March 2020 Us Dept of Interior, Geological Survey (USGS) - Submittal of 2019 Annual Report ML19044A3732019-01-31031 January 2019 Us Dept. of Interior, Geological Survey - Submittal of 2018 Annual Report ML18016A0512018-01-11011 January 2018 2017 Annual Report for the U.S. Geological Survey Triga Non-Power Reactor Facility ML17030A0362017-01-0909 January 2017 Us Dept. of the Interior, Geological Survey - Submittal of 2016 Annual Report ML16032A1662016-01-12012 January 2016 U.S. Geological Survey - Transmittal of 2015 Annual Report ML15043A0322015-02-0303 February 2015 Us Dept of Interior, Geological Survey - Submittal of 2014 Annual Report ML13037A1052013-01-24024 January 2013 U.S. Geological Survey Triga Non-Power Reactor Facility, 2012 Annual Report ML1104000232011-01-31031 January 2011 U. S. Geological Survey Triga Non-Power Reactor Annual Report - January 1, 2010 - December 31, 2010 ML1011701212010-04-19019 April 2010 Revision to the 2009 Annual Report ML1003303192010-01-25025 January 2010 U. S. Geological Survey Triga Non-Power Reactor Annual Report - January 1, 2009 - December 31, 2009 ML0902802312009-01-15015 January 2009 U.S. Geological Survey Triga Non-power Reactor Facility - 2008 Annual Report ML0802500232008-01-18018 January 2008 U.S. Geological Survey Trigra Reactor Annual Report for 2007 ML0510802622005-04-0808 April 2005 Letter Transmitting Replacement of the CY2003 Annual Report of the U.S. Geological Survey Triga non-power Reactor Facility ML0510504002005-04-0808 April 2005 U. S. Geological Survey Triga Reactor Annual Report January 1, 2003 - December 31, 2003 2024-03-28
[Table view] Category:Letter
MONTHYEARML24092A1542024-04-0404 April 2024 U.S. Geological Survey - Change of Facility Project Manager ML24092A0422024-03-28028 March 2024 U.S. Geological Survey Triga Reactor Annual Report Submittal in Accordance with Technical Specification 6.7.1 Rev. 00 for 2023 IR 05000274/20232022023-11-13013 November 2023 U.S. Geological - U.S. Nuclear Regulatory Commission Safety Inpsection Report No. 05000274/2023202 IR 05000274/20232032023-11-0909 November 2023 United States Geological Survey - U.S. Nuclear Regulatory Commission Security Inspection Report No. 05000274/2023203 (Public) IR 05000274/20232012023-02-27027 February 2023 United States Geological Survey - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 05000274/2023201 ML22026A4852022-03-0707 March 2022 Examination Confirmation Letter No. 50-274/OL-22-01, United States Department of Interior Geological Survey ML22053A1872022-02-22022 February 2022 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, Reactor Administrator Succession IR 05000274/20212022021-10-0101 October 2021 U.S. Geological U.S. Nuclear Regulatory Commission Safety Inspection Report No. 05000274/2021202 IR 05000274/20212032021-09-30030 September 2021 United States Geological Survey - Nuclear Regulatory Commission Security Inspection Report No. 05000274/2021203 IR 05000274/20202012021-04-21021 April 2021 United States Geological Survey, U.S. Nuclear Regulatory Commission Routine Inspection Report05000274/2020201 - Cover Letter and Enclosure ML21090A1912021-03-29029 March 2021 U.S. Geological Survey Triga Reactor, Annual Report Submittal in Accordance with Technical Specification 6.7.1 Rev. 00 ML21082A2822021-03-23023 March 2021 Letter to R. Horton, USGS Denver Federal Center, from B. Smith, NRC, NRC Office of Investigations Report No. 4-2019-014 - Release of OI Synopsis IR 05000274/20212012021-03-12012 March 2021 U.S. Geological Survey NRC Non-Routine Inspection Report 05000274/2021201 ML20314A2922020-12-0303 December 2020 USGS Issuance of Amendment No. 14 to Renewed Facility Operating License No. R-113 for the USGS Triga Research Reactor Increasing the Special Nuclear Material Possession Limit ML20336A0202020-12-0101 December 2020 U.S. Geological Survey Triga Reactor - License Amendment Request LAR 14, Supplemental Information Letter 04 Provided in Response to Phone Call with NRC Project Manager at 0854 Mst on 2020-11-30 ML20295A4242020-11-16016 November 2020 Notification of Mailing Address Change Regarding Submittal of Fingerprint Cards ML20310A2962020-11-0505 November 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, License Amendment Request LAR 14, Supplemental Information Letter 03 Provided in Resolution of Comments Presented by the State of Colorado During the Public M ML20310A3352020-11-0505 November 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, Updated Physical Security Plan, Rev. Xxi ML20318A0882020-10-22022 October 2020 U.S. Geological Survey Trig a Reactor, License Amendment Request LAR 14, Supplemental Information Letter 01 Provided in Response to Audit Visit on 2020-10-15 Purpose ML20296A4902020-10-22022 October 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, License Amendment Request LAR 14, Supplemental Information Letter 02 Provided in Response to Audit Visit on 2020-10-15 ML20295A5102020-10-21021 October 2020 U.S. Geological Survey - Regulatory Audit Report Proposed License Amended No. 14 to Increase the Special Nuclear Material Possession Limit ML20233A9962020-10-0909 October 2020 Us Geological Survey - Issuance of Amendment No. 13 to Renewed Facility Operating License No. R-113 to Amend Technical Specifications 3.1.3 and 4.1 for the Us Geological Survey Triga Research Reactor ML20279A5912020-10-0606 October 2020 U.S. Geological Survey - Regulatory Audit Proposed License Amendment No. 14 Tt Increase the Special Nuclear Material Possession Limit ML20279A3052020-10-0505 October 2020 U.S. Geological Survey - Acceptance of the Application for Proposed License Amendment No. 14 Increase in the Special Nuclear Nuclear Material Possession Limit ML20275A2672020-10-0101 October 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, License Amendment Request 2020-02, LAR 14, Rev. 00 ML20199M1672020-07-20020 July 2020 NRC Letter and SER Authorizing USGS to Use an Alternate A2 Value ML20183A1622020-07-0202 July 2020 U.S. Geological Survey - Acceptance of the Application for a License Amendment Exception to TS 3.1.3 and 4.1 to Allow Fewer than 110 Fuel Elements When Either Shutdown or Operating at a Power Level Not Greater than 5 Kilowatts ML20177A6102020-06-25025 June 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, License Amendment Request 2020-01, Supplemental Information Provided in Response to ML20176A465 ML20161A1272020-06-0404 June 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, License Amendment Request 2020-01, Revision 01 ML20134J1082020-05-13013 May 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, License Amendment Request 2020-01 ML20157A0752020-05-0707 May 2020 U.S. Geological Survey Triga Reactor, Docket Number 50-274, License Number R-113, Reactor Supervisor Appointment ML20136A3362020-04-21021 April 2020 Us Dept. of Interior, Geological Survey (Usgs), Submittal of Corrected 2019 Annual Report ML20134J1162020-04-10010 April 2020 7 of the Emergency Plan for the U.S. Geological Survey Triga Reactor (Gstr) Facility (License R-113, Docket 50-274) ML20087H0192020-03-0202 March 2020 Us Dept of Interior, Geological Survey (USGS) - Submittal of 2019 Annual Report ML19206A0622019-07-11011 July 2019 Us Dept of the Interior, Us Geological Survey Follow-Up on August 9, 2018 Letter Request for Approval for Use of Alternative A2 Value for Isotope Br-80m Under Appendix a to 10 CFR 71 ML19066A0542019-02-25025 February 2019 U.S. Dept of the Interior, Geological Survey, Reply to a Notice of Violation: EA-18-031 and EA-18-111 ML19044A3732019-01-31031 January 2019 Us Dept. of Interior, Geological Survey - Submittal of 2018 Annual Report ML18354B1702018-12-31031 December 2018 U.S Geological Survey-Notice of Violation and Proposed Imposition of Civil Penalty ML18324A5752018-11-16016 November 2018 United States Geological Survey (Usgs), Transfer of Reactor Supervisor Responsibilities. Position of Reactor Supervisor for Triga Facility Has Been Transferred from Mr. Brycen Roy to Mr. Christopher Farwell, Effective October 26, on Interim ML18324A5742018-11-16016 November 2018 United States Department of the Interior - Transfer of Reactor Administrative Responsibilities ML18325A1462018-11-0707 November 2018 U.S. Dept. of Interior, Geological Survey - Response to Apparent Violations Associated with NRC Investigation Reports 4-2017-027 and 4-2018-005; IA-18-038 IR 05000274/20182022018-08-15015 August 2018 United States Geological Survey - U.S. Nuclear Regulatory Commission Routine Inspection Report No. 50-274/2018-202 ML18236A5512018-08-0909 August 2018 Request for Approval for Use of Alternative A2 Value for Isotope Br-80m Under Appendix a to 10 CFR 71 IR 05000274/20182032018-07-17017 July 2018 United States Geological Survey - U.S. Nuclear Regulatory Commission Security Inspection Report 05000274/2018203 ML18016A0512018-01-11011 January 2018 2017 Annual Report for the U.S. Geological Survey Triga Non-Power Reactor Facility ML17355A1472017-12-18018 December 2017 Establishing a Quality Assurance Program at the U.S. Geological Survey Triga Reactor Facility (License R-113, Docket 50-274) IR 05000274/20172012017-05-17017 May 2017 United States Geological Survey NRC Routine Inspection Report No. 50-274/2017-201 ML17074A6472017-04-19019 April 2017 United States Geological Survey TRIGA Reactor Closure of Confirmatory Action Letter No. NRR-03-005 on Site-Specific Compensatory Measures Implementation Plan ML17067A3942017-03-22022 March 2017 U.S. Geological Survey - Non-Power Reactor Closeout of Generic Letter 2016-01, "Monitoring of Neutron Absorbing Materials in Spent Fuel Pools," for the U.S. Geological Survey Training Reactor And Isotopes Production, General Atomics Research Reactor ML17046A3632017-02-17017 February 2017 Examination Report No. 50-274/OL-17-01, United States Geological Survey 2024-04-04
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EUSGS science for a changing world Department of the Interior US Geological Survey Box 25046 MS-974 Denver CO, 80225 January 9, 2017 U.S. Nuclear Regulatory Commission Document Control Desk Washington DC 20555
Dear NRC staff,
Enclosed is the 2016 annual report for the U.S. Geological Survey TRIGA non-power reactor facility.
The facility docket number is 50-274.
Sincerely, Brycen Roy Reactor Supervisor
.. I
, I Enclosure Copy to:
Geoffrey Wertz OWFN 12 D20
U.S. GEOLOGICAL SURVEY TRIGA REACTOR ANNUAL REPORT JANUARY 1, 2016 - DECEMBER 31, 2016 NRC LICENSE No. R-113 DOCKET NO. 50-274 I. Personnel Changes:
Clayton Manning took over the Reactor Health Physicist position on March 30, 2016.
Tim DeBey stepped down from the Reactor Supervisor position on July 23, 2016, and Brycen Roy was acting in that position until he was hired on September 15, 2016 as the replacement Reactor Supervisor.
II. Operating Experience The Geological Survey TRIGA Reactor (GSTR) was in normal operation for the year 2016. No major facility changes were made during the year.
A synopsis of irradiations performed during the year is given below, listed by the organization submitting the samples to the reactor staff:
Organization Number of Samples USGS-INAA 237 USGS - Geochronology 789 USGS-other 16 Non-USGS 2594 Total 3636 A. Thermal power calibrations were performed in March and September, with adjustments made to the instrumentation as required.
B. During the report period, 179 daily checklists and 12 monthly checklists were completed in compliance with technical specifications requirements for surveillance of the reactor facility.
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C. Tours were provided to individuals and groups during the year for a total visitor count of approximately 525.
Ill. Tabulation of Energy Generated MWh operated Critical hours Pulses Jan 31.719 35h 18m 0 Feb 25.276 26h 26m 0 Mar 59.197 63h 31m 8 Apr 85.700 87h 27m 0 May 36.100 37h 55m 0 June 54.494 55h 57m 0 July 37.572 40h 24m 0 Aug 43.140 44h 47m 1 Sept 29.643 34h 48m 0 Oct 40.199 44h 03m 6 Nov 9.120 13h 57m 0 Dec 44.589 47h 20m 0 Totals 496.749 531h 53m 15 IV. Unscheduled Shutdowns Twelve (12) unscheduled shutdowns occurred in 2016. These were:
Number Date Cause 1121 3/17/16 Failure of "Auto" mode controller; timeout scram 1122 3/18/16 DAS watchdog scram; cause could not be identified 1123 3/22/16 DAS watchdog scram; cause could not be identified 1124 4/6/16 DAS watchdog scram; cause could not be identified 1125 4/19/16 DAS watchdog scram; cause could not be identified 1126 5/25/16 DAS watchdog scram; cause could not be identified.
1127 6/16/16 DAS watchdog scram; cause could not be identified 1128 6/16/16 DAS watchdog scram; cause could not be identified 1129 6/17/16 DAS watchdog scram; cause could not be identified 1130 6/17/16 DAS watchdog scram; cause could not be identified 1131 7/1/16 NP1000 high power scram due to faulty signal cable connector 1132 7/5/16 DAS watchdog scram; cause could not be identified V. Significant Maintenance Operations 1/16 Replaced inlet filter on HX inlet water pressure monitor sensor line.
1/16 Cleaned 8 nozzles on cooling tower.
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5/16 Replaced air pressure regulator for transient rod air supply.
5/16 Replaced power switch for CAM air pump.
5/16 Replace ion exchange resin.
6/16 Replaced cooling tower "fill" and spray header.
6/16 Repaired signal cable for NP1000 detector.
7/16 Replaced "tee" connector for NPP1000 detector signal cable.
7/16 Replaced Sensoray board 2 in DAC computer.
7/16 Switched Sensoray boards 1 and 2 in DAC computer.
7/16 Pumped -23 gallons of ground water from reactor tank annulus.
8/16 Performed DOP test of HEPA exhaust filters - SAT.
8/16 Replaced secondary system sump pump.
9/16 Replaced piping and fittings for secondary system sump pump.
12/16 Pumped -28 gallons of ground water from reactor tank annulus.
12/16 Replaced both belts on reactor bay main exhaust fan.
VI. Summary of 10 CFR 50.59 changes No 50.59 changes were made to the facility in CY 2016. One activity was screened for 50.59 applicability and it was evaluated to not require a full 50.59 evaluation m; NRC approval.
VII. Radioactivity Releases A. Listed below are the total amounts of radioactive gaseous effluents released to the environment beyond the effective control of the reactor facility Table 1. Gaseous Effluents Released to the Environment in CY 2016 Month Argon-41 R-113 License Tritium -HTO 10CFR20 Allowable (mCi)
- Allowable (Ci) (Ci) (mCi)
January 0.95217 5.833 0 124 February 0.35518 5.833 0.136 124 March 0.27149 5.833 0.107 124 April 1.0119 5.833 0.191 124 May 0.29592 5.833 0 124 June 0.76109 5.833 0.177 124 July 1.39031 5.833 0 124 August 1.70760 5.833 0 124 September 1.00000 5.833 0.584 124 October 2.43527 5.833 0 124 November 1.01546 5.833 0 124 December 1.2399 5.833 0.0748 124 Total 12.43629 70.00 0.688 1488
% of Allowable 17.7661% ------------------- 0.046% -------------------
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- Note: The tritium concentrations are estimates based on the amount of water lost by evaporation from the reactor multiplied by the concentration of tritium as HTO.
Tritium sample analyses were performed by ALS Laboratories.
B. No liquid releases were made during the 2016 calendar year. Two 55-gallon drums of solid waste from the reactor facility were shipped to a waste broker in California for ultimate burial in Clive, Utah.
C. During the year Na-24 and Br-82 were detected on CAM filter analyses.
Conservative estimated releases for these isotopes are in Table 2.
Table 2. Releases of Non-Gaseous Isotopes in CY 2016.
Isotope µCi µCi/ml 10 CFR 20 limit (uCi/ml) % of limit Na-24 1.4743E-3 1.982E-14 7.00E-09 2.832E-4 Br-82 1.8234E-3 2.452E-14 5.00E-09 4.904E-4 VIII. Radiation Monitoring Our program to monitor and control radiation exposures included the four major elements below during the operating year.
- 1. Ten (10) gamma-sensitive area monitors, and one (1) neutron-sensitive area monitor, are located throughout the Nuclear Science Building. A remote readout panel is located in the reactor health physics office. High alarm set points range from 2 mR/hr to 50 mR/hr. High level alarms are very infrequent and due to sample movements. These monitors are calibration-checked annually.
- 2. One Continuous Air Monitor (CAM) samples air in the reactor bay. An equilibrium concentration of about 1.5 x 1o-s µCi/ml present for two minutes will result in an increase of about 500 cpm above background. Two alarm setpoints are a low-level alarm set at 5,000 cpm and a high level alarm set at 10,000 cpm. Reactor bay air is sampled during all reactor operations. The fixed particulate air filter is normally changed each week and counted on a HPGE gamma spectrometer. The charcoal filter, positioned behind the particulate air filter, is also normally changed and counted weekly. Filter data showed radioisotope concentrations less than allowable airborne concentration limits given in 10 CFR Part 20, Appendix B, Table 2 for all particulate radioisotopes produced by the reactor.
- 3. Contamination wipe surveys and portable instrument radiation surveys are performed at least once a month. The portable instruments are calibrated with a 3-Curie (initial activity) Cs-137 source traceable to NBS, and wipes are counted on a Gamma Products G5000W low-level counting system. The highest removable contamination found was during the May surveys, at 2612.4 pCi/100 cm 2 beta-gamma, located in the reactor bay on the end of the west table. The next highest contamination was found during the August surveys, at 930.3 pCi/100 cm 2 beta-4
gamma, near the southwest lead cave. Each of these areas was subsequently decontaminated to levels below the removable contamination limit. No areas were greater than 12.2 pCi/100 cm 2 alpha contamination, which does not require decontamination as it is well below the limit of 90 pCi/100 cm 2 alpha.
The roof area over the reactor tank is roped off and posted as a radiation area (averaging 2.5 mR/hr) during 1 MW operations.
- 4. TLD dosimeters were used at seven outdoor environmental stations. Reactor facility visitors are issued self-reading electronic dosimeters. Reactor staff personnel are issued beta, gamma, albedo neutron badges.
Table 3. Personnel Monitoring Results (12/1/15-11/30/16)
Whole Body (Rem) Whole Body (Rem)
Employee code Extremity (Rem)
Deep Dose Equiv. Shallow Dose Equiv.
E0888 0.231 0.285 0.698 E0707 0.272 0.317 0.531 E0908 0.057 0.057 0.189 E0715 0.080 0.080 0.102 Reactor visitors and visiting experimenters wore electronic pocket dosimeters that resulted in no individual's reading greater than 1.4 mr in a single visit or 1.5 mr cumulative annual dose.
Table 4. Environmental Dose Results (Oct 2015 through Sept 2016)
Dose Dose Dose Dose Total Location Oct.- Dec. Jan-Mar Apr-June July-Sept.
(RAD) (RAD) (RAD) (RAD) (RAD)
Control (Backgrond) 0.062 0.057 0.063 0.056 0.238 Main Exhaust 0.150 0.045 0.054 0.027 0.276 West Vehicle Gate 0.059 0.021 0.011 0.014 0.105 West Room 151 0.073 0.061 0.061 0.053 0.248 Gate Cooling Tower 0.000 0.000 0.000 0.000 0.000 SE Light Pole 0.000 0.000 0.000 0.000 0.000 SW Light Pole 0.011 0.000 0.000 0.000 0.011 Rx Fence Loading 0.068 0.035 0.039 0.042 0.184 Dock Tunnel 0.018. 0.028 0.025 0.019 0.090 Note: Above totals have the background subtracted (see control badge). All TLDs
- were supplied and analyzed by Mirian Technologies.
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X. Environmental Monitoring Very small releases of two non-gaseous isotopes were detected on the CAM filters during the year. These two isotopes (Na-24 and Br-82) were discharged through the normal air exhaust above the roof of the reactor bay. The amounts released are shown in Table 2. Routine biennial environmental soil and water samples were taken in the summer of 2016 and will be taken again in 2018. Analyses of the 2016 samples showed no isotopes that were produced by the reactor facility.
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