ML20010H856

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Annual Rept,Il Lopra Reactor,800801-810801.
ML20010H856
Person / Time
Site: 05000356, Black Fox
Issue date: 09/25/1981
From:
ILLINOIS, UNIV. OF, URBANA, IL
To:
Shared Package
ML20010H841 List:
References
NUDOCS 8109290359
Download: ML20010H856 (2)


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ANNUAL REPORT August 1, 1980 - August 1, 1981 ILLIN0IS LOPRA REACTOR Facility License R-117 f- I.

SUMMARY

OF OPERATING EXPERIENCE The LOPRA was scheduled for operation a total of 29 hours3.356481e-4 days <br />0.00806 hours <br />4.794974e-5 weeks <br />1.10345e-5 months <br /> and was in actual operation a total of 18.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />. Scheduled operations averaged 2.4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> / month and actual operation 1.6 hours6.944444e-5 days <br />0.00167 hours <br />9.920635e-6 weeks <br />2.283e-6 months <br /> / month. Use of the LOPRA was for an ' Approach to Critical' experiment for students and operator training in which this experiment was completed. The types and percentages of usage for this time were:

Approach to Critical Experiments 28%

Operator Training 55%

Measurements for Surveillance Requirements 17%

There were no new experiments or changes in facility design, performance characteristics, and operating procedures during this period. The LOPRA was placed in an Inoperative condition, as defined by the Technical Specifications, from October 10, 1981 througia May 8,1981. During this time, the BF tube 3

that is used for start-up was removed and was utilized as a temporary source range detector for the Illinois Advanced TRIGA Reactor, License No. R-115. ,

This was described in the Annual Report for this reactor, dated February 28, 1980.

II. TABULATION OF OPERATION llours Critical

  • and Energy Steady State Operation 18.8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br /> 0.0014 MW-hrs
  • This includes time for loading fuel elements during the approach to critical experiments. Actual critical time would be about 30% of this value.

III. EMERGENCY S!!UTDOWNS - None.

IV. MAINTENANCE The only maintenance was a change in the power supply for the BF 3 tube that is used as the source range monitor. After repeated difficulties and the final failure of a 23 year old tube-type high voltage power supply, a new solid-state system was substituted _to obtain the 1700 volts necessary for this operation.

V. CONDITIONS UNDER SECTION 50.59 g 10 CFR 50 As indicated above, there were no changes to the system, procedures, or new experiments during this period.

81092903598109253 PDR ADOCK 050003567 R PDR9

.e 8 VI., VII., VIII. RADIOACTIVITY Because of the low power and infrequent use of the LOPRA, its operation does not contribute to the release of effluents. Personnel records for the laboratory are given in the Annual Report for the Advanced TRIGA Reactor, License No. R 115, dated February 28, 1981 (Docket No. 50-151).

LICENSE RENEWAL Amendment No. 3 to Facility License No. R-117 was received on April 6,-1981.

This amendment renews the operating license until November 1, 1989. The only.

j change in the amendment is a section that requires limiting conditions of operation for the water quality and surveillance requirements to assure that the con dition is met.

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