ML20101H535
| ML20101H535 | |
| Person / Time | |
|---|---|
| Site: | Idaho State University |
| Issue date: | 12/31/1991 |
| From: | Crawford K IDAHO STATE UNIV., POCATELLO, ID |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| NUDOCS 9206300028 | |
| Download: ML20101H535 (3) | |
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i STATE UNIVERSITY June 22, 1992 U.S. Nuclear Regulatory Commission Document Control Desk 4
Washington, D.C. 20555 Omce of the Dean Gentlamen:
College of Enginess Attached is the Annual Operating Report for the Idaho State
. Camps Box m University AGN-201 Nuclear Reactor, License R-110, Docket P e M No. 50-284, for the calendar year 1991.
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Respectfully submitted, 4
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'l Dr. Kevan C..Crawf rd Reactor Supervisor
- KCC/rdc cc: V. Charyulu, Dean, College of Engineering
, U.S. Nuclear Regulatory Commission Document Control Desk Washington, D.C. 20555 i
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(208) 236-2902
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(208) 236-4538 9206300028 911231 ISU is An Equal Opportunity Employer g#7/f PDR ADOCK O30002B4 R PDR ll7
ANNUAL OPERATING REPORT FOR 1991
- 1. Brief Narrative of Changes:
- a. There were no changes to the' facility design, performance characteristics or operating procedures relating to reactor-safety during this reporting period.
- b. Results of major surveillance tests and inspections.
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- 1) Channel tests on all safety channels were performed and all scram interlocks were tested and found to be satisfactory und within specification. l
- 2) Power and period calibrations were performed with satisfactory results.
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- 3) The shield tank was inspected and _ no leuks or excessive corrosion were noted.
- 4) a) The control'_ rod drive mechanisms were inspected and tested with satisfactory ,
results. 1 b) Scram times were measured and found to.be-less than 130 milliseconds.
c) Control and safety rod worths and run-up timec were measured; from these values the reactivity insertion rate was determined to-be less than 0.045% per second for.any rod, d) The shutdown margin was determined to ' be greater _than 2.0% with the most-reactive rod fully inserted.
- 2. The total operating-time for the reactor-during 1991 was nearly 97 hourc - with _ a total thermal energy output of approximately 64 watt-hours. The monthly breakdown of operation time follows:
Month Hours Fonth Hours January 2.6 July- 0.0 February 6.8' August 4.3 March 5.9 September 16.7 April 8.6 October 18.0 .
May 2.9 Novetber 10.9 June- 3.1 December 17.3
- 3. Unscheduled chutdewns:
There were no unscheduled shutdowns.
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- 4. - Safety related maintenance included-the'following:
- a. Replacement of varioue olectronic vacuum tubes in the Channel #2 detector chasis was necessary to - reduce unwanted electronic noise that was evident - by nuclear.
instrument Ch #2 meter readings. Replacement tubes employed were of equal make - or better - to ensure that-reactor safety integrity was maintained.
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4 Changes to the Facility:
- a. There have been no changes to the facility as described in the application for license.
- b. There were no changes to the-procedures as described in.
this facility's Technical Specifications.
- c. No new or untried experiments or tests were performed during the reporting perf.od.
- 6. No summary of safety evaluations are submitted at this time,-
because there were no changes to operating procedures,:
testing, or experiments to this facility during the 1991 calendar year.
- 7. No radiation effluents were released or discharged to the environnent during 1991.
- 8. Neutron and bet 3/ gamma radiatien surveys performod on. the exterior walls of the facility indicated that maximum combined ~
contact radiation levels were less than 2 mrem /hr.
- 9. No person using the facility received a whole body-exposure of.
greater than 50 millirem during 1991.
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