According to the data released by the nuclear emergency response headquarters of Japan, the absorbed dose rate irradiation plume with the spent fuel pool water injection operations staff in the fukushima - daichi nuclear power plant was calculated, who have been irradiated by six typical cloud models, including , chain, taper, fan - shaped, pervading and roof cloud model respectively. Results show that absorbed dose rate of Japan Self - Defense Forces who irradiated by and pervading cloud model is 0.14×10^2μGy/h (minimum) and 5.35×10^2μGy...