Study on the pulse parameters of fast periodic pulsed reactor under stable operation

Abstract The fast periodic pulsed reactor utilizes rotating reflectors to introduce periodic varying reactivity, making the core generate continuous power pulses at a certain frequency. The pulse parameters under stable operation are extremely important in measuring the performance of the reactor. The critical search method of calculating the pulse parameters is established, and in order to further study the factors affecting the pulse parameters, a new theoretical estimation method is proposed. The two methods are verified in the IBR-2 with PuO2 as fuel, and the results are in good accordance with the experimental data. The fast periodic pulsed reactor FNPR with UO2 as fuel is designed. The pulse parameters of FNPR are calculated by the verified methods and compared with those of IBR-2. The results show that in terms of parameter quality, FNPR is inferior to IBR-2. The method of improving FNPR pulse parameters is also discussed herein.