Estimation of the integral dose of neutrons using monitoring data

The Japan Atomic Energy Research Instituteʹs Labor Union estimated the integrated dose of neutrons using the monitoring data immediately after the JCO accident. The integral doses at 13 points located on the external boundary of the JCO site were estimated. As a result of regression analysis, it was calculated that the integral dose at the 350 m point, which was the limit for evacuation decided by the chief of the village, was about 2 mSv.