Abstract

Reactor power is CFBR-Ⅱ one important baseline data, experimental scale using 252Cf source power conversion method. Introduced the principle of the power scale experiments, and measurement results are analyzed and discussed. Experimental process to fully consider the energy "flat ring", "point source" and other similar factors on the measurement results, obtained through the power of the scale corresponding to the different power meter indicates the typical point, 252Cf source scale power conversion method combined standard uncertainty 7%. Power which is scaled using 252Cf source conversion method, is an important benchmark experimental date in CFBR-Ⅱ reactor. The principle of the experiment of scale was introduced, and the power of measurement results was discussed. The factors which mainly affect the results of measurement are energy "corresponding gently" and "point source" assumed correct, and they were fully considered in the experiment. Through the power scale experiment, different indications at corresponding typical power level were obtained. The synthetic standard uncertainty of using the 252Cf source conversion method to scale power is 7%