ML20077E338

Annual Operating Rept for 1990,Idaho State Univ

ML20077E338
Person / Time
Site:	Idaho State University
Issue date:	12/31/1990
From:	Adam Wilson IDAHO STATE UNIV., POCATELLO, ID
To:	Chris Miller Office of Nuclear Reactor Regulation
References
NUDOCS 9106100002
Download: ML20077E338 (3)

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f'g, JF6 KJ,7 Idaho State University Pocatello, Idaho 83209 8000 Office of the Dean College of Engineering 005 000 May 31, 1991 (208) 236 2902 Charles L. Miller Division of Licensing standardization and Special Projects Branch U.S. Iluclear Regulatory Commission 11 ail Stop 34D Washington, D.C. 20555

Dear Mr. Miller:

Attached is the Annual operating Report for the Idaho State University AG11-201 !!uclear Reactor, License R-110, Docket 110. 50-284, for the calendar year 1990.

Respectfully submitted, A. E. Wilson, P.E.

Reactor Supervisor l AEW/mjp cc: V. Charyulu, Dean, College of Engineering U.S. Iluclear Regulatory Commission c/o Document Management Branch Washington, D.C. 20555 i

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,T'R nDOCV O",n O A ISU is /.n Equal Opportunity Employer c\

ANNUAL OPERATING REPORT FOR 1990

1. Brief Narrative of Changes:

a. There were no changes to the f acility design, performance characteristics or operating procodures relating to reactor safety during this reporting period,

b. Results of major surveillance tests and inspections.

1) Channel tests on all safety channels were performed and all scram interlocks were tested and found to be satisfactory and within specification.

2) Power and period calibcations were perf ormed with satisfactory results.

3) The shield tank was inspected and no leaks or excessive corrosion were noted.

The control rod drive mechanisms were

4) a) satisfactory inspected and tested with results, b) Scram times were measured and found to be less than 130 milliseconds.

c) Control and safety rod worths and run up times were measured; from these values the reactivity insertion rate was determined to be less than 0.045% por 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 1990 was nearly 157 hours0.00182 days <br />0.0436 hours <br />2.595899e-4 weeks <br />5.97385e-5 months <br /> with a total thermal energy output of approximately 147 watt-hours. The monthly breakdown of operation time follows:

Month flourE ligni;h Hours January 7.8 July 4.5 February 20.6 August 2.1 March 34.6 September 10.2 April 23.4 October 12.2 May 10.7 November 9.8 June 14.5 December 4.3

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3. Unticheduled shutdowns:

There were no unscheduled shutdown.

4. Safety related maintenance included the following

a. Replacement of various tubes in channel 2.

5. Changes to the racility.

a. There have been no changes to the facility as described in the application for license,

b. lio new or untried experiments or tests were performed during the reporting period.

6. lio radioactive effluents were released or discharged to the environment during 1990.

7. lio person using the f acility received a whole body exposure of greater than 50 millirem during 1990.

8. lieutron and beta / gamma radiation surveys performed on the I exterior walls of the f acility indicated that maximum combined  !

contact radiation levels were less that 2 mrom/hr. l l

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