ML17188A381
| ML17188A381 | |
| Person / Time | |
|---|---|
| Site: | Idaho State University |
| Issue date: | 06/29/2017 |
| From: | Beatty M, Dunzik-Gougar M Idaho State University |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| Download: ML17188A381 (8) | |
Text
Idaho State University AGN-201M Reactor Facility License R-110, Docket No. 50-284 Annual Operating Report for 2016 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 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 on 05/03/2016, 05/03/2016
& 05/08/2016 respectively.
(2) Power level (02/23/2016) and period check (05/08/2016) experiments were performed with satisfactory results.
(3) The shield water tank was inspected (05/08/2016) and no leaks or excessive corrosion were observed. The water level interlock tested satisfactorily (05/08/2016).
(4) The seismic displacement & temperature interlocks were tested and found satisfactory on 05/08/2016 and 05/08/2016 respectively.
(5) (a) Control element capsules (cladding) were inspected (06/03/2016) and found to be in good condition with no evidence of deterioration since the previous inspection.
(b) The control rod drive mechanisms were inspected (06/03/2016) and tested with satisfactory results.
(c) Ejection times were measured (06/03/2016) for all SCRAM-able rods, SR-1, SR-2 and CCR and were found to be 0.104, 0.107 and 0.092 seconds respectively.
The requirement that the ejection times be less than 1 second is satisfied.
(d) The reactivity worth of all safety and control rods were measured (06/16/2016), as well as the time required to drive each rod to its fully inserted position (06/01/2016). The largest reactivity insertion rate was 0.021089 %.Llk/k s- 1 ($0.0285 s- 1), which is less than the prescribed limit of 0.065%.Llk/k s- 1*
(e) On 06/16/2016 the shutdown margin with both the most reactive SCRAM-able rod and the fine control rod remaining fully inserted was determined to be 1.507%.Llk/k ($2.036) (at the maximum allowable k excess of 0.65 %.Llk/k) and satisfies the requirement that it be greater than 1%.Llk/k.
(f) All surveillances were within the appropriate Technical Specification requirements.
Idaho State University AGN-201M Reactor 2016 Annual Report Page 2 of8 C. NRC Inspection The annual inspection was conducted on July 25-27, 2016. No findings of significance were identified. No violations were found during the inspection.
- 2. Operating History and Energy Output.
The reactor was operated at power levels up to 3.7 Watts for a total of93.06 Watt-hours of thermal energy during this reporting period. A summary of monthly operations for 2016 is given in Table I.
Table I. Summary of Monthly Reactor Operations (1January2016 through 31December2016) r--------------- --
1 Year Totals l
1-----------,---~---1
~nuary____ : _ oj __J
!F<:_~!~ary _________1__3.s1i______~
1_~~~£'!._____ _j 11.321GzL_____i*
!April !
1-----*----*--***--*----*-r-*----*1----1 4.8811
~ay ---!- 4.472414. -~
G~~~------*---t- 3.634~1---1l
' . , ________::::J__ _ _ _
1.~_ug~~t_____J ______~------1 l~:~~~~be_r-----l*fi.~~~::L------1 rN~vember IDecember
t 1.66os33
-T24-:-soml______l
\. * ** . Total\9~.05957\Watt~hr* \
I I I I 1-----**----*----*-*----*--*--*. --***ro~ii9-306-I kw~tt:"h;1 c_ _ _ _ _ _ _ _ _ _ _ __J__ _ _ _ , _ _ _ _ _:.:..J The 0.09306 kWh consumed 4.76 micrograms ofU-235.
During the calendar year, a number of students went through reactor operator training.
During the calendar year, six students took NRC licensing exams and three were awarded Reactor Operator (RO) licenses, one was awarded a Senior Reactor Operator instant (SRO-Instant) license, one was awarded a Senior Reactor Operator Upgrade (SRO-Upgrade) license, and one did not pass section A of the Written Examination.
- 3. A. Unscheduled Shutdowns and Corrective Actions Taken.
None.
Idaho State University AGN-201M Reactor 2016 Annual Report Page 3 of8 B. Inadvertent Scrams and Action Taken.
There were 44 inadvertent scrams during this reporting period. Table II summarizes the inadvertent scrams, known or suspected cause, and action taken.
Table II. Summary of Inadvertent Scrams (1 January 2016 through 31 December 2016)
Date Time Scram Tvoe Cause Action 02/29/2016 1519 CH#3 Low Electrical transient Restart 03/02/2016 1504 Period Electrical transient Restart 03/05/2016 1118 CH#3 Low Operator missed range change Restart 03/14/2016 1313 CH#2High CH#2 scram set point set to low Restart 03/15/2016 1414 CH#3 Hi!!h Operator missed range change Restart 03/22/2016 1453 Period Electrical transient Restart 04/04/2016 1350 CH#3 Hi!!h Electrical transient Restart 04/04/2016 1402 Period Electrical transient Restart Shutdown &
04/04/2016 1410 Period Electrical transient Investigate 04/21/2016 1359 Period Electrical transient Restart 04/23/2016 1516 CH#3 High Operator missed range change Restart 04/23/2016 1526 Period Electrical transient Restart 05/07/2016 1104 Period Electrical transient Restart 05/07/2016 2007 CH#3 High Electrical transient Restart 05/10/2016 1434 Period Electrical transient Restart 05/27/2016 1042 CH#3 Low Electrical noise Restart 05/27/2016 1155 CH#3 High Operator missed range change Restart 05/27/2016 1512 CH#3 High Electrical transient Restart 06/02/2016 1652 CH#2Low Electrical transient Restart 06/29/2016 1008 Period Electrical transient Restart 06/30/2016 1211 Period Electrical transient Restart 09/12/2016 1439 CH#3 High Operator missed range change Restart 09/23/2016 1557 Period Electrical transient Restart 09/26/2016 1305 CH#3 High Operator missed range change Restart 09/27/2016 1612 Period Electrical transient Restart 0912112016 1624 Period Electrical transient Restart Fast Neutron drop due to BP#3 09/28/2016 1517 CH#2Low graphite removed Restart 09/28/2016 1751 Period Electrical transient Restart 09/30/2016 1150 Period Electrical transient Restart 09/30/2016 1342 Period Electrical transient Restart 10/03/2016 1318 Period Electrical transient Restart
Idaho State University AGN-201M Reactor 2016 Annual Report Page 4 of8 Shutdown&
10/03/2016 1425 CH#l Low Electrical transient Investigate 10/05/2016 1525 Period Electrical transient Restart 10/10/2016 1317 Period Electrical transient Restart Shutdown&
10/17/2016 1358 CH#3 Low Electrical transient Investigate 10/21/2016 1143 CH#3 Low Electrical transient Restart 11/02/2016 1717 CH#3 High Operator missed range change Restart 11110/2016 1913 Period Electrical transient Restart 11/30/2016 1837 Ch#3 Low Operator missed range change Restart 12/03/2016 1406 Period Electrical transient Restart 12/05/2016 1303 Period Electrical transient Restart Shutdown &
12/07/2016 1529 Period Electrical transient Investigate 12/07/2016 1726 Period Electrical transient Restart 12/08/2016 1725 CH#3 High Operator missed range change Restart
- 4. Safety-Related Corrective Maintenance:
03/23/2016: Replaced Vl3, and V14 vacuum tubes.
04/27/2016: Replaced CH#2 6Y6 vacuum tube and re-soldered vacuum tube socket.
09/28/2016: The diodes SR2 were replaced with equivalent diodes. The s886 vacuum tube located near the channel #2 signal input had all of its legs re-soldered to the board.
The transistor (QlOl 2N365) was wired in backwards so it was changed and re-soldered. Connections to S 1 and S2 were re-soldered on the front panel. Capacitor B 1 was changed form 1.34volts to 1.5 volts to account for this change in capacitor the resistor equivalent value was changed to 1.5 KO. This helped greatly with the 10- 7 issue. All vacuum tube sockets were cleaned with electronic cleaner and the vacuum tubes were verified to work well with the sockets.
09/20-22/2016: The channel# 3 ion chamber was replaced with the spare ion chamber of the same type. Re-tightened reactor console grounding for better results.
0912512016: Removal of brass position indicator for the CCR was removed for a smooth synchro range of the CCR positon.
09/29/2016: Channel #2 6CB6 vacuum tube was replaced.
10/26/2016: The "SET 10-11" and the "AMPLIFIER BALNANCE" potentiometer were replaced with both 200 n @ 5% uncertainty potentiometers that meet the
Idaho State University AGN-201M Reactor 2016 Annual Report Page 5 of8 specifications needed.
11115/2016: CCR rod and drive was taken out, calibrated, tested, and re-greased.
12/08/2016: CCR rod and drive was taken out, calibrated, tested, and re-greased
- 5. Modifications.
A. Changes in Facility Design.
None.
B. Changes to Procedures.
\
None.
C. Changes to Experiments.
None.
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)
Mary Lou Dunzik-Gougar - Reactor Administrator George Imel - Assistant Reactor Administrator Maxwell J. Daniels - Reactor Supervisor Richard R. Brey - ISU Radiation Safety Officer Robert Boston, PE, CHP (DOE-ID)
Kermit Bunde (DOE-ID)
Richard E. McCracken (retired from INL)
Benjamin Baker (INL)
Jay F. Kunze - Former Reactor Administrator
- 6. Summary of Changes Subject to 10 CFR 50.59 Analyses.
None.
- 7. Radioactive Effluents.
A. Liquid Waste -Total Activity Released: None.
B. Gaseous Waste - Total Estimated Activity Released: 1.93186 µCi of Ar-41.
Idaho State University AGN-201M Reactor 2016 Annual Report Page 6 of8 The AGN-201 Reactor was operated for 93.06 watt-hours at power levels up to approximately 3.7 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 1.93186 µCi. 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 and the equation used is shown in Equation (1 ).
Table IV. Summary of Monthly Gaseous Radioactive Effluent Releases (1January2016 through r---------------*--* 31December2016)
*-*-**-----1
~_____Ye_~!.I~ta~ Ar::_~[µ~!L ___~
iJanuary 1 _QJ I IFebruary l 0.07287L 1 l
~ar~h=-~~0.23so31 ---]
~y_!:!!____ j__Q:!Q.!~ ______J i M~y_______+J!.09~~~--***--j
~ ne 1.July 1 0.07545!
r------r----i
_________ ___JI________
I i
O,f----------l' O!
!August lse_p!~m~~- 0.55511 ----!i t!Jct<?ber ____ J_~.24~.ZL _______J l November I 0.03448!
f------------------**-i--------- -- --*-----1I IDecember \ 0.5149! I 1* Total I :l,.9318~1 µCi :
- J Where (R) is the total amount of AI -41 produced.
C. Solid Waste -Total Activity: None.
- 8. The latest environmental radiation survey, performed at the facility boundary while the reactor was operating at 72% of full licensed power (3.6 watts), measured a maximum combined neutron and gamma dose equivalent rate of 0.432 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- 1 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.
Idaho State University AGN-201M Reactor 2016 Annual Report Page 7of8 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 2016 monitoring period of personnel are summarized in Table V:
Dose equivalents below the minimum measurable quantity for the current monitoring period are recorded as "M."
The 10 CFR 20.1201 occupational dose limits to adults are: total 5 rem, lens of eye 15 rem, shallow 50 rem, and deep 50 rem. The doses received for all reactor laboratory personnel during 2016 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, pen dosimeters are issued for the
Idaho State University AGN-201M Reactor 2015 Annual Report Page 8 of8 Anytime a member of the public visits the reactor, pen dosimeters are issued for the extent of the tour. A miriimum of 1 dosimeter to every 4 people is issued for .a representative* group dose. During the 2016 calendar year there were 507 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 2016 through 31 December 2016)
Estimated whole-body Number of individuals exposure range (mrem): in each range:
No Observable Dose 490 l.Omr.em* 10 1.0 mrem <Dose::; 5.0 mtem 3 5.0 ntrem <Dose< 10.0 mrem 0 10,0 mrem <Dose< 15.0 mrem 0 Drqpped I)osimeter*
- 4 Total number ofindividuals reported 507
- Below 1.0 mrem is considered un--measureable
- When a dosimeter is dropped, the value indicated is altered +/-tom the true value. All individuals who dropped dosimeters are assumed to. have no observable dose.
None of the 507 visitors to the facility during 2016 received a measurable dose that Would exceed the annual 0.5 rem dose limit of 10 CFR 20.1301. Therefore, the average and maximum doses received by personnel and the public are within NRC guidelines.
- Report Prepared by:
Matthew Beatty, Senior Reactor Operator May 15, 2017 .
AtfLJ,~
Reviewed and approved by:
Maxwell Daniel::;,
Reactor Supervisor May22,2017
~~
Mary Lou Du.nzik:-Gougar, Mary Lou Dunzik- \. Digitally signed by Mary Lou
/\Qunzik-Gougar Reactor Administrator May22, 2017 Gougar "** ~-oate: 2017.06.29 11 :46:os -06*00*