Uncertainty analysis of power variation for one typical research reactor

، صفحه 0-0 (1)
عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)
Power is one of the main characteristics of each research reactor which determines amount and diversity of its applications. Stability of power during irradiation especially for long time is one of the key parameters preventing from uncertainty in anticipated activity. The uncertainty analysis of the power variations for one month operation of the Tehran Research Reactor (TRR) with 5 MW power is conducted precisely. Variations of the TRR power is determined by measurement of net peak areas of 1332 keV gamma rays of 60Co neutron activated monitors. The in-core irradiation position and beam tube results indicate about 1% and 3% power variation respectively. The accuracy in the other parameters such as irradiation time, samples weight, irradiation position and counting system have also some effects on the uncertainty of the power variation. With considering the effects of the mentioned parameters, the stability of reactor power during experiment is concluded.
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