ML14184B341

Idaho State University, Transmittal of Annual Report for Reactor License R-110

ML14184B341
Person / Time
Site:	Idaho State University
Issue date:	07/01/2014
From:	Grimes H Idaho State University, Pocatello
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
Download: ML14184B341 (18)

Text

Idaho State UNIVERSITY Office for Research and Economic Development 921 South 8th Avenue, Stop 8130 0 Pocatello, Idaho 83209-8130 July 1, 2014 Document Control Desk U.S. Nuclear Energy Commission One White Flint North Mail Stop OWEN-1 E13 11555 Rockville Pike Rockville, MD 20852-2738 315-415-1404

SUBJECT:

Transmittal of Annual Report for Reactor License R-110 Attached are two copies of the Annual Report for the AGN-201 Reactor at Idaho State University, License R-1 10, Docket 4I 50.284.

Sincerely.

Howard Grimes, PhD Vice President for Research and Economic Development c: Mr. Xiaosong Yin, Research and Test Reactors Licensing Branch Mail Stop 0-12 D 03 Ac~D Phone: (208) 282-3134

• Fax: (208) 282-4487

• www.isu.edu/research ISU is an Equal Opportunity Employer

~

State of Idaho )

S.S.

County of Bannock)

On this Ist day of July, in the year of 2014, before me, Kathryn J. Harris, a notary public, personally appeared Howard Grimes, personally known to me to be the person(s) whose name(s) is (are) subscribed to the within instrument, and acknowledged to me that he (she)(they) executed the same.

My Commission Expires on .

Idaho State University AGN-201M Reactor Facility License R-110, Docket No. 50-284 Annual Operating Report for 2013 Calendar Year

1. Narrative Summary A. Changes in Facility Design, Performance Characteristics, and Operating Procedures:

There were no changes in facility design, performance characteristics, and operating procedures relating to reactor safety or operations during the reporting period.

B. Results of Major Surveillance Tests and Inspections:

(1) The period, count rate, and power level measuring channels were calibrated and set points were verified. Channels 1, 2, & 3 were tested 9/6/2013, 6/7/2013 & 9/5/2013 respectively.

(2) Power level (3/18/13) and period check (6/7/2013) experiments were performed with satisfactory results.

(3) The shield water tank was inspected (6/4/2013) and no leaks or excessive corrosion were observed. The water level interlock tested satisfactorily (6/4/2013).

(4) The seismic displacement & temperature interlocks were tested and found satisfactory on 9/6/2013 and 9/4/2013 respectively.

(5) (a) Control element capsules (cladding) were inspected (6/7/2013) and found to be in good condition with no evidence of deterioration since the previous inspection.

(b) The control rod drive mechanisms were inspected (6/7/2013) and tested with satisfactory results.

(c) Ejection times were measured for all SCRAM-able rods and found to be less than I second.

(d) The reactivity worth of all safety and control rods were measured, as well as the time required to drive each rod to its fully inserted position. Reactivity insertion rates were determined to be less than 0.020%Ak/k s-' ($0.027 s-1) for all rods.

(e) On 9/13/13 the shutdown margin with both the most reactive- SCRAMN-ablerod -and the fine control rod fully inserted was determined to be 1.64%Ak/k ($2.22) and satisfies the requirement that it be greater than l%Ak/k.

(f) All surveillances were within the appropriate Technical Specification requirements.

C. Minor Violation As a result of the annual inspection by the Nuclear Regulatory Commission, conducted in October 2013, a Level IV Violation was assessed. The Violation involved not having signatures affixed to all of the signature lines on several of the operator re-qualification forms. A response to the Violation was submitted on December 18, 2013, indicating that it

Idaho State University AGN-201 M Reactor 2013 Annual Report Page 2 of 8 was confirmed, from the Reactor Log, that those operations (control console exam) had been conducted for the particular operators, but were not sufficiently recorded. It was also indicated that unnecessary duplication of signature lines were being eliminated on a revised re-qualification form that would be put into effect within 30 days.

2. Operating History and Energy Output.

The reactor was operated at power levels up to 4.9 watts for a total of 521 watt-hours of thermal energy during this reporting period. A summary of monthly operations for 2013 is given in Table I.

Table I. Summary of Monthly Reactor Operations (1 January 2013 through 31 December 2013)

Month Energy (W-hr)

January 19.6 February 22.9 March 69.5 April 10.7 May 15.2 June 26.4 June 122.4 August 141.3 September 3.9 October 31.6 November 57.2 December 0.3 Total 521.0 The 0.521 kWh consumed 26.4 micrograms of U-235.

During the calendar year, a number of students went through reactor operator training. During the calendar year, three students took NRC licensing exams. Two were awarded Reactor-Operator (RO) licenses and one was awarded a Senior Reactor-Operator (SRO) license.

3. A. Unscheduled Shutdowns and Corrective Actions Taken.

None.

B. Inadvertent Scrams and Action Taken.

There were 56 inadvertent scrams during this reporting period. Table I1 summarizes the inadvertent scrams, known or suspected cause, and action taken.

Idaho State University AGN-201M Reactor 2013 Annual Report Page 3 of 8 Table 11. Summary of Inadvertent Scrams (1 January 2013 through 31 December 2013)

Date Time Scram Type Cause Action 1/10/13 12:27 Channel I Low Range Change Error Restart Investigate 1/15/13 11:19 Channel 2 High Signal Irregularity (-3.5 W max power reached) & Restart 1/15/13 13:51 Channel 3 High Range Change Error Restart 1/15/13 17:14 Channel 3 Low Range Change Error Restart 1/16/13 10:10 Channel I Low Raising Detector Caused Additional Signal Noise Restart Investigate 1/17/13 11:45 Period Signal Irregularity in Channel 2 & Restart 1/18/13 13:08 Channel I Low Range Change Error Restart 1/18/13 15:11 Channel 1 Low Unknown Restart Investigate 1/21/13 11:41 Channel 2 High Scram Point Set Too Low & Restart 1/21/13 12:38 Channel I High Range Change Error Restart 1/21/13 14:01 Channel I Low Suspected Electrical Transient Restart 1/21/13 14:30 Channel 1 Low Suspected Electrical Transient Restart 1/21/13 15:03 Channel 1 Low Suspected Electrical Transient Restart 1/24/13 10:07 Channel I Low Suspected Electrical Transient Restart 1/24/13 12:06 Channel 1 High Range Change Error Restart 1/25/13 11:11 Channel ILow Suspected Electrical Transient Restart 3/4/13 16:52 Channel 2 Low Attempting To Operate At Too Low Of Power Restart 3/4/13 17:01 Period Signal Irregularity Restart 3/16/13 16:44 Period Experiment Removed To Quickly Restart 3/16/13 16:52 Channel 1 High Range Change Error Restart 3/16/13 16:57 Channel 2 Low Attempting To Operate at Too Low Of Power Restart 4/1/13 15:40 Channel 3 Low Signal Irregularity During Range Change Restart 4/17/13 10:05 Channel 3 High Range Change Error Restart 6/14/13 10:47 Period Signal Irregularity Restart 6/14/13 11:39 Period Signal Irregularity Restart 6/14/13 15:30 Period Signal Irregularity Shutdown 6/25/13 10:08 Channel 3 Low Signal Irregularity During Range Change Restart 6/26/12 13:01 Channel 3 High Signal Irregularity During Range Change Restart 6/26/13 19:59 Period Tubes Not Warmed Up Restart 7/1/13 13:48 Channel 3 High Signal Irregularity During Range Change Restart 7/2/13 11:48 Period Operator Error Restart Investigate 7/2/13 12:01 Channel 2 Low Tubes Not Warmed Up & Restart 7/12/13 8:58 Channel 3 High Signal Irregularity During Range Change Restart 8/8/13 13:46 Channel 3 High Range Change Error Restart 8/15/13 15:02 Channel 3 Low Bumped The Console Restart

Idaho State University AGN-20 1M Reactor 2013 Annual Report Page 4 of 8 8/15/13 18:58 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 11:05 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 11:25 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 11:58 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 12:08 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 12:24 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 13:04 Channel I Low Range Change Error Restart 8/19/13 12:43 Channel 3 Low Bumped Console Restart Wait &

8/21/13 8:52 Channel 2 Low Tubes Not Warmed Up Restart 9/4/13 14:58 Period Signal Irregularity Restart Wait &

9/13/13 12:35 Period Tubes Not Warmed Up Restart 9/13/13 14:43 Channel 2 Low Signal Irregularity Shutdown 9/25/13 15:00 Chanel 3 Low Signal Irregularity During Range Change Restart Inspect &

9/25/13 15:06 Period Signal Irregularity Restart 10/2/13 10:26 Channel 3 Low Signal Irregularity During Range Change Restart 10/2/13 10:31 Channel 3 Low Attempting To Operate at Too Low Of Power Restart Heat Room 10/9/13 14:29 Temp Interlock Ambient Temperature Close to Trip Point & Restart Move Heaters &

10/9/13 14:43 Loss of Power Circuit Breaker Tripped Due to Space Heaters Restart 10/15/13 9:45 Channel 3 Low Range Change Error Restart 10/23/13 17:08 Channel I Low Negative Reactivity Insertion Restart 10/23/13 17:32 Channel 2 Low Signal Irregularity Shutdown 11/6/13 14:46 Channel 3 Low Range Change Error Restart

4. Safety-Related Corrective Maintenance:

2/13/13: The "suspected electrical transient" causing inadvertent scrams on Channel I was fixed by removing an unnecessary equipment protection limit on the Channel I detector. The detector would not have to be raised for operation over I Watt and therefore the solenoid raising mechanism would not cause noise in the detector system.

Channel 1 sensitrol was replaced with a model that matches those used on Channels 2 and 3. Following this the magnets would not engage when interlock and scram conditions were inet and the scram lights would not work intermittently. It is assumed that jarring the scram chassis during maintenance cause these additional problems.

Rebuilding cable J-5 fixed the lights issue. Removing a short found in the unused period 2 circuit resolved the magnet issue. In troubleshooting the above problems other changes made were: Cable J-13 was rebuilt. The 46k magnet panel resistor and two 200 ohm 12 watt power resistors were replaced. The 260 volt DC power supply's filter capacitors were replaced. The R-23 potentiometer was adjusted to return the power supply's voltage to 260 volts from 243 volts.

Idaho State University AGN-201 M Reactor 2013 Annual Report Page 5 of 8 3/28/13: Channel 2 was found turned on but without power. The fuse and vacuum tube V- 12 (6BW4) were replaced to restore operation.

5/2/13: Channel 2 was not responding appropriately. The 100 ohm 5 watt resistor was replaced as well as the circuit board and all wiring connected to the circuit board.

5/2/13: In order to enhance the signal integrity of Channel 3, the internal signal cable was replaced, the zero adjustment was tightened and one of the 0B2 vacuum tubes was replaced.

5/15/13: The aluminum sheath was removed from the glory hole, cleaned and replaced. No radioactive contamination was found.

6/4/13: Channel 2 power supply was rewired with new components back to original schematics.

6/7/13: Dampening of period meter was adjusted.

6/13/13: The V-4 (6CB6) and V-5 (6CB6) vacuum tubes on channel 2 were replaced.

6/14/13: The gears between Fine Control Rod's syncrogenerator and number display were found to not always catch. The pin on the display was bent out of the way.

6/24/13: Replaced the vacuum tubes V-5 (6CB6) and V-5 (6CB6) on channel 2 to improve signal quality. Also the Fine Control Rod display lead screw was tightened.

8/16/13: To improve performance during range changes the contacts on the channel 3 range switch were cleaned and tightened.

5. Modifications.

A. Changes in Facility Design.

None B. Changes to Procedures.

Maintenance Procedure 1 utilized a Polaroid camera and a strobe light to measure rod drop times. Polaroid film has become difficult to acquire and the camera itself has begun to break. MP-1 was revised to utilize Hall Effect sensors to measure the rod drop tim ing.

C. Changes to Experiments.

None

Idaho State University AGN-201M Reactor 2013 Annual Report Page 6 of 8 D. Reactor Safety Committee.

As of the end of the reporting period, membership of the Reactor Safety Committee (RSC) consisted of the following individuals:

Frank H. Just - Chair (retired from INL)

Jay F. Kunze - Reactor Administrator Adam L. Mallicoat - Reactor Supervisor Richard R. Brey - Dean of College Peter Farina - Radiation Safety Officer Robert Boston, PE, CHP (DOE-ID)

Kermit Bunde (DOE-ID)

Richard E. McCracken (retired from INL)

6. Sunmmary of Changes Subject to 10 CFR 50.59 Analyses.

MP-1 was changed to utilize Hall Effect sensors to measure rod drop times.

Unnecessary equipment protection limit removed from Channel 1.

7. Radioactive Effluents.

A. Liquid Waste - Total Activity Released: None.

B. Gaseous Waste - Total Estimated Activity Released: 50.2 PLCi ofAr-41.

The AGN-201 Reactor was operated for 521 watt-hours at power levels up to approximately 4.9 watts. At this power level Ar-41 production is negligible and substantially below the effluent concentration limit given in 10 CFR 20 Appendix B, Table

2. The total activity of Ar-41 released to the environment was conservatively estimated at 50.2 ptCi. This activity corresponds to the total activity of all gaseous radioactive effluent from the facility. A monthly summary of calculated gaseous releases is given in Table IV.

Table IV. Summary of Monthly Gaseous Radioactive Effluent Releases (1 January 2013 through 31 December 2013)

Ar-41 Month (VCi)

January 1.9 February 2.2 March 6.7 April 1.0 May 1.5 June 2.5 June 11.8

Idaho State University AGN-201M Reactor 2012 Annual Report Page 7 of 8 August 13.6 September 0.4 October 3.1 November 5.5 December 0.0 Total 50.2 C. Solid Waste - Total Activity: None.

8. The latest environmental radiation surveys, performed at the facility boundary while the reactor was operating at 100% of full licensed power (5.0 watt), measured a maximum combined neutron and gamma dose equivalent rate of 0.72 mrem hr" or less at the outside walls of the building proximal to the reactor. The requirement that the total equivalent dosv' rate be less than 2.0 mrem hr" was satisfied.

9. Radiation Exposures.

The Radiation Safety Officer reviews personnel radiation exposures quarterly. Annual reports of ionizing radiation doses are provided by the Radiation Safety Officer to all monitored personnel as required under the provisions of 10 CFR 19.

Personnel with duties in the reactor laboratory on either a regular or occasional basis have been issued radiation dosimeters by the Idaho State University Technical Safety Office.

The whole body exposures for the 2013 monitoring period of personnel are summarized in Table V:

Table V. Personnel Radiation Monitored for 1/1/2013-12/31/2013 Name Exposure by Type (mrem)

Deep Lens Shallow Alsufyani, Sultan <1 <1 <1 Baker, Benjamin 150 150 150 Bealieu, Quinton <1 <1 <1 Horkley, Matt 12 12 13 Imel, Geoprge 3 3 2 Krieger, Michael 35 34 33 Kunze, Jay 1 1 2 Langbehn, Adam 22 21 19 Loveland, Ryan 42 41 40 Lum, Edward 3 3 3 Mallicoat, Adam 8 7 9 Mulvaaney, John <1 <1 <1 Navarvo, Jorge <1 <1 <1

Idaho State University AGN-201M Reactor 2012 Annual Report Page 8 of 8 Nelson, Marcus 7 6 6 Riley, Tony 5 6 5 Stewart, Trevor 3 3 43 Womack, Cody 9 9 9 Tolman, Aaron 1 1 2 Muchmore, Cody <1 <1 <1 Byambadorj, Bilguun 2 2 1 Crawford, Shiloh 1 1 1 Finkbeiner, Jennifer 2 3 2 The 10 CFR 20.1201 occupational dose limits to adults are: total 5 rein, lens of eye 15 remi, shallow 50 rem, and deep 50 rem. The doses received for all reactor laboratory personnel during 2013 are well below the dose limits of 10 CFR 20.1201, and well below ISU ALARA limits (I REM per year, 0.3 REM per quarter).

Anytime a member of the public visits the reactor pin dosimeters are issued for the extent of the tour. A minimum of 1 dosimeter to every 5 people is issued for a representative group dose. During the 2013 calendar year there were 451 recorded visitors to the facility.

A summary of the public dose exposure is presented in Table VI.

Table VI. Summary Whole-Body Exposures to the Public (1 January 2012 through 31 December 2012)

Estimated whole-body Number of individuals exposure range (mrem): in each range:

No Observable Dose 429 1.0 mrem* 10 Greater than 1.0 but below 5.0 mrem 11 Greater than 5.0 but below 10.0 mrem 1 Total number of individuals reported 451

• Below 1.0 mrem is considered un-measureable None of the 451 visitors to the facility during 2012 received a measurable dose that wVOLild exceed the annual 0.5 remn dose limit of 10 CFR 20.1301. Note there was only one reading that was above 5 mrem, this is likely due to the shock of dropping the dosimeter.

Therefore, the average and maximum doses received by personnel and the public are well within NRC guidelines.

Report prepared by' .,

Ryan Loveland , Seilior ReactoF peratort June 27, 2013 Reviewed and approved by6 .i .2"7*

Adam Mallicoat, Reactor Supervisor ze, Reactor June 30, 2013 JuOe30, 2013

Idaho State University AGN-201M Reactor Facility License R-110, Docket No. 50-284 Annual Operating Report for 2013 Calendar Year

1. Narrative Summary A. Changes in Facility Design, Performance Characteristics, and Operating Procedures:

There were no changes in facility design, performance characteristics, and operating procedures relating to reactor safety or operations during the reporting period.

B. Results of Major Surveillance Tests and Inspections:

(1) The period, count rate, and power level measuring channels were calibrated and set points were verified. Channels 1, 2, & 3 were tested 9/6/2013, 6/7/2013 & 9/5/2013 respectively.

(2) Power level (3/18/13) and period check (6/7/2013) experiments were performed with satisfactory results.

(3) The shield water tank was inspected (6/4/2013) and no leaks or excessive corrosion were observed. The water level interlock tested satisfactorily (6/4/2013).

(4) The seismic displacement & temperature interlocks were tested and found satisfactory on 9/6/2013 and 9/4/2013 respectively.

(5) (a) Control element capsules (cladding) were inspected (6/7/20 13) and found to be in good condition with no evidence of deterioration since the previous inspection.

(b) The control rod drive mechanisms were inspected (6/7/2013) and tested with satisfactory results.

(c) Ejection times were measured for all SCRAM-able rods and found to be less than 1 second.

(d) The reactivity worth of all safety and control rods were measured, as well as the time required to drive each rod to its fully inserted position. Reactivity insertion rates were determined to be less than 0.020%Ak/k s-1 ($0.027 s-1) for all rods.

(e) On 9/13/13 the shutdown margin with both the most reactiv-e-S-CRSA-N-be r-o -da the fine control rod fully inserted was determined to be 1.64%Ak/k ($2.22) and satisfies the requirement that it be greater than 1%Ak/k.

(f) All surveillances were within the appropriate Technical Specification requirements.

C. Minor Violation As a result of the annual inspection by the Nuclear Regulatory Commission, conducted in October 2013, a Level IV Violation was assessed. The Violation involved not having signatures affixed to all of the signature lines on several of the operator re-qualification forms. A response to the Violation was submitted on December 18, 2013, indicating that it

Idaho State University AGN-201M Reactor 2013 Annual Report Page 2 of 8 was confirmed, from the Reactor Log, that those operations (control console exam) had been conducted for the particular operators, but were not sufficiently recorded. It was also indicated that unnecessary duplication of signature lines were being eliminated on a revised re-qualification form that would be put into effect within 30 days.

2. Operating History and Energy Output.

The reactor was operated at power levels up to 4.9 watts for a total of 521 watt-hours of thermal energy during this reporting period. A summary of monthly operations for 2013 is given in Table I.

Table I. Summary of Monthly Reactor Operations (1 January 2013 through 3 1 December 2013)

Month Energy (W-hr)

January 19.6 February 22.9 March 69.5 April 10.7 May 15.2 June 26.4 June 122.4 August 141.3 September 3.9 October 31.6 November 57.2 December 0.3 Total 521.0 The 0.521 kWh consumed 26.4 micrograms of U-235.

During the calendar year, a number of students went through reactor operator training. During the calendar year, three students took NRC licensing exams. Two were awarded Reactor-Operator (RO) licenses and one was awarded a Senior Reactor-Operator (SRO) license.

3. A. Unscheduled Shutdowns and Corrective Actions Taken.

None.

B. Inadvertent Scrams and Action Taken.

There were 56 inadvertent scrams during this reporting period. Table II summarizes the inadvertent scrams, known or suspected cause, and action taken.

Idaho State University AGN-201M Reactor 2013 Annual Report Page 3 of 8 Table II. Summary of Inadvertent Scrams (1 January 2013 through 31 December 2013)

Date Time Scram Type Cause Action 1/10/13 12:27 Channel 1 Low Range Change Error Restart Investigate 1/15/13 11:19 Channel 2 High Signal Irregularity (-3.5 W max power reached) & Restart 1/15/13 13:51 Channel 3 High Range Change Error Restart 1/15/13 17:14 Channel 3 Low Range Change Error Restart 1/16/13 10:10 Channel I Low Raising Detector Caused Additional Signal Noise Restart Investigate 1/17/13 11:45 Period Signal Irregularity in Channel 2 & Restart 1/18/13 13:08 Channel 1 Low Range Change Error Restart 1/18/13 15:11 Channel I Low Unknown Restart Investigate 1/21/13 11:41 Channel 2 High Scram Point Set Too Low & Restart 1/21/13 12:38 Channel 1 High Range Change Error Restart 1/21/13 14:01 Channel I Low Suspected Electrical Transient Restart 1/21/13 14:30 Channel I Low Suspected Electrical Transient Restart 1/21/13 15:03 Channel 1 Low Suspected Electrical Transient Restart 1/24/13 10:07 Channel I Low Suspected Electrical Transient Restart 1/24/13 12:06 Channel I High Range Change Error Restart 1/25/13 11:11 Channel ILow Suspected Electrical Transient Restart 3/4/13 16:52 Channel 2 Low Attempting To Operate At Too Low Of Power Restart 3/4/13 17:01 Period Signal Irregularity Restart 3/16/13 16:44 Period Experiment Removed To Quickly Restart 3/16/13 16:52 Channel I High Range Change Error Restart 3/16/13 16:57 Channel 2 Low Attempting To Operate at Too Low Of Power Restart 4/1/13 15:40 Channel 3 Low Signal Irregularity During Range Change Restart 4/17/13 10:05 Channel 3 High Range Change Error Restart 6/14/13 10:47 Period Signal Irregularity Restart 6/14/13 11:39 Period Signal Irregularity Restart 6/14/13 15:30 Period Signal Irregularity Shutdown 6/25/13 10:08 Channel 3 Low Signal Irregularity During Range Change Restart 6/26/12 13:01 Channel 3 High Signal Irregularity During Range Change Restart 6/26/13 19:59 Period Tubes Not Warmed Up Restart 7/1/13 13:48 Channel 3 High Signal Irregularity During Range Change Restart 7/2/13 11:48 Period Operator Error Restart Investigate 7/2/13 12:01 Channel 2 Low Tubes Not Warmed Up & Restart 7/12/13 8:58 Channel 3 High Signal Irregularity During Range Change Restart 8/8/13 13:46 Channel 3 High Range Change Error Restart 8/15/13 15:02 Channel 3 Low Bumped The Console Restart

Idaho State University AGN-201M Reactor 2013 Annual Report Page 4 of 8 8/15/13 18:58 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 11:05 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 11:25 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 11:58 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 12:08 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 12:24 Channel 3 Low Signal Irregularity During Range Change Restart 8/16/13 13:04 Channel 1 Low Range Change Error Restart 8/19/13 12:43 Channel 3 Low Bumped Console Restart Wait &

8/21/13 8:52 Channel 2 Low Tubes Not Warmed Up Restart 9/4/13 14:58 Period Signal Irregularity Restart Wait &

9/13/13 12:35 Period Tubes Not Warmed Up Restart 9/13/13 14:43 Channel 2 Low Signal Irregularity Shutdown 9/25/13 15:00 Chanel 3 Low Signal Irregularity During Range Change Restart Inspect &

9/25/13 15:06 Period Signal Irregularity Restart 10/2/13 10:26 Channel 3 Low Signal Irregularity During Range Change Restart 10/2/13 10:31 Channel 3 Low Attempting To Operate at Too Low Of Power Restart Heat Room 10/9/13 14:29 Temp Interlock Ambient Temperature Close to Trip Point & Restart Move Heaters &

10/9/13 14:43 Loss of Power Circuit Breaker Tripped Due to Space Heaters Restart 10/15/13 9:45 Channel 3 Low Range Change Error Restart 10/23/13 17:08 Channel I Low Negative Reactivity Insertion Restart 10/23/13 17:32 Channel 2 Low Signal Irregularity Shutdown 11/6/13 14:46 Channel 3 Low Range Change Error Restart

4. Safety-Related Corrective Maintenance:

2/13/13: The "suspected electrical transient" causing inadvertent scrams on Channel I was Fixed by removing an unnecessary equipment protection limit on the Channel I detector. The detector would not have to be raised for operation over 1 Watt and therefore the solenoid raising mechanism would not cause noise in the detector system.

Channel 1 sensitrol was replaced with a model that matches those used on Channels 2 and 3. Following this the magnets would not engage when interlock and scram conditions were met and the scram lights would not work intermittently. It is assumed that jarring the scram chassis during maintenance cause these additional problems.

Rebuilding cable J-5 fixed the lights issue. Removing a short found in the unused period 2 circuit resolved the magnet issue. In troubleshooting the above problems other changes made were: Cable J-13 was rebuilt. The 46k magnet panel resistor and two 200 ohm 12 watt power resistors were replaced. The 260 volt DC power supply's filter capacitors were replaced. The R-23 potentiometer was adjusted to return the power supply's voltage to 260 volts from 243 volts.

Idaho State University AGN-201M Reactor 2013 Annual Report Page 5 of 8 3/28/13: Channel 2 was found turned on but without power. The fuse and vacuum tube V-12 (6BW4) were replaced to restore operation.

5/2/13: Channel 2 was not responding appropriately. The 100 ohm 5 watt resistor wvas replaced as well as the circuit board and all wiring connected to the circuit board.

5/2/13: In order to enhance the signal integrity of Channel 3, the internal signal cable was replaced, the zero adjustment was tightened and one of the 0B2 vacuum tubes was replaced.

5/15/13: The aluminum sheath was removed from the glory hole, cleaned and replaced. No radioactive contamination was found.

6/4/13: Channel 2 power supply was rewired with new components back to original schematics.

6/7/13: Dampening of period meter was adjusted.

6/13/13: The V-4 (6CB6) and V-5 (6CB6) vacuum tubes on channel 2 were replaced.

6/14/13: The gears between Fine Control Rod's syncrogenerator and number display were found to not always catch. The pin on the display was bent out of the way.

6/24/13: Replaced the vacuum tubes V-5 (6CB6) and V-5 (6CB6) on channel 2 to improve signal quality. Also the Fine Control Rod display lead screw was tightened.

8/16/13: To improve performance during range changes the contacts on the channel 3 range switch were cleaned and tightened.

5. Modifications.

A. Changes in Facility Design.

None B. Changes to Procedures.

Maintenance Procedure 1 utilized a Polaroid camera and a strobe light to measure rod drop times. Polaroid film has become difficult to acquire and the camera itself has begun to break. MP-1 was revised to utilize Hall Effect sensors to measure the rod drop timing.

C. Changes to Experiments.

None

Idaho State University AGN-20 IM Reactor 2013 Annual Report Page 6 of 8 D. Reactor Safety Committee.

As of the end of the reporting period, membership of the Reactor Safety Committee (RSC) consisted of the following individuals:

Frank H. Just - Chair (retired from TNL)

Jay F. Kunze - Reactor Administrator Adam L. Mallicoat - Reactor Supervisor Richard R. Brey - Dean of College Peter Farina - Radiation Safety Officer Robert Boston, PE, CHP (DOE-ID)

Kermit Bunde (DOE-ID)

Richard E. McCracken (retired from INL)

6. Summary of Changes Subject to 10 CFR 50.59 Analyses.

MP-1 was changed to utilize Hall Effect sensors to measure rod drop times.

Unnecessary equipment protection limit removed from Channel 1.

7. Radioactive Effluents.

A. Liquid Waste - Total Activity Released: None.

B. Gaseous Waste - Total Estimated Activity Released: 50.2 j[tCi of Ar-41.

The AGN-201 Reactor was operated for 521 watt-hours at power levels up to approximately 4.9 watts. At this power level Ar-41 production is negligible and substantially below the effluent concentration limit given in 10 CFR 20 Appendix B, Table

2. The total activity of Ar-41 released to the environment was conservatively estimated at 50.2 j.tCi. This activity corresponds to the total activity of all gaseous radioactive effluent from the facility. A monthly summary of calculated gaseous releases is given in Table IV.

Table IV. Summary of Monthly Gaseous Radioactive Effluent Releases (1 January 2013 through 31 December 2013)

Ar-41 Month (VCi)

January 1.9 February 2.2 March 6.7 April 1.0 May 1.5 June 2.5 June 11.8

Idaho State University AGN-20 1M Reactor 2012 Annual Report Page 7 of 8 August 13.6 September 0.4 October 3.1 November 5.5 December 0.0 Total 50.2 C. Solid Waste - Total Activity: None.

8. The latest environmental radiation surveys, performed at the facility boundary while the reactor was operating at 100% of full licensed power (5.0 watt), measured a maxim1um1 combined neutron and gamma dose equivalent rate of 0.72 mrem hr-1 or less at the outside walls of the building proximal to the reactor. The requirement that the total equivalent dose rate be less than 2.0 mrem hr- was satisfied.

9. Radiation Exposures.

The Radiation Safety Officer reviews personnel radiation exposures quarterly. Annual reports of ionizing radiation doses are provided by the Radiation Safety Officer to all monitored personnel as required under the provisions of 10 CFR 19.

Personnel with duties in the reactor laboratory on either a regular or occasional basis have been issued radiation dosimeters by the Idaho State University Technical Safety Office.

The whole body exposures for the 2013 monitoring period of personnel are SUlmmarized il Table V:

Table V. Personnel Radiation Monitored for 1/1/2013-12/31/2013 Name Exposure by Type (mrero)

Deep Lens Shallow Alsufyani, Sultan <1 <1 <1 Baker, Benjamin 150 150 150 Bealieu, Quinton <1 <1 <1 Horkley, Matt 12 12 13 Imel, Geoprge 3 3 2 Krieger, Michael 35 34 33 Kunze, Jay 1 1 2 Langbehn, Adam 22 21 19 Loveland, Ryan 42 41 40 Lum, Edward 3 3 3 Mallicoat, Adam 8 7 9 Mulvaaney, John <1 <1 <1 Navarvo, Jorge <1 <1 <1

Idaho State University AGN-201M Reactor 2012 Annual Report Page 8 of 8 Nelson, Marcus 7 6 6 Riley, Tony 5 6 5 Stewart, Trevor 3 3 43 Womack, Cody 9 9 9 Tolman, Aaron 1 1 2 Muchmore, Cody <1 <1 <1 Byambadorj, Bilguun 2 2 1 Crawford, Shiloh 1 1 1 Finkbeiner, Jennifer 2 3 2 The 10 CFR 20.1201 occupational dose limits to adults are: total 5 rem, lens of eye 15 reim, shallow 50 rem, and deep 50 rem. The doses received for all reactor laboratory personnel during 2013 are well below the dose limits of 10 CFR 20.1201, and well below ISU ALARA limits (1 REM per year, 0.3 REM per quarter).

Anytime a member of the public visits the reactor pin dosimeters are issued for the extent of the tour. A minimum of I dosimeter to every 5 people is issued for a representative group dose. During the 2013 calendar year there were 451 recorded visitors to the facility.

A summary of the public dose exposure is presented in Table VI.

Table VI. Summary Whole-Body Exposures to the Public (1 January 2012 through 31 December 2012)

Estimated whole-body Number of individuals exposure range (mrem): in each range:

No Observable Dose 429 1.0 mrem* 10 Greater than 1.0 but below 5.0 mrem 11 Greater than 5.0 but below 10.0 mrem 1 Total number of individuals reported 451

• Below 1.0 mrem is considered un-measureable None of the 451 visitors to the facility during 2012 received a measurable dose that would exceed the annual 0.5 rein dose limit of 10 CFR 20.1301. Note there was only one reading that was above 5 mrem, this is likely due to the shock of dropping the dosimeter.

Therefore, the average and maximum doses received by personnel and the public are well within NRC guidelines.

Report prepared by:

Ryan Loveland, Seiior Reactor Operatort' June 27, 2013 Reviewed and approved by A ptl Adam Mallicoat, Reactor Supervisor JKze, Reactor Adttator June 30, 2013 Ju e 30, 2013