1. Radiation Environmental Impact Assessment

(1) Summary

Radiation Environmental Report (RER) is one of the licensing documents for operation license and its renewal of nuclear power plants and
radioactive material handling facilities. This report evaluates the exposure dose during normal operation and accidents by understanding the
environment and the current status of the power plant.

Recently, in order to verify the domestic suitability of the atmospheric dispersion model developed in the United States,tracer experiments
using SF6 gas are being conducted.

(2) Technology possessed

. Environmental data evaluation technology by distance/direction
. Atmospheric dispersion factor evaluation technology in normal operation/accidents using atmospheric dispersion evaluation code
. Individual/group exposure dose assessment technology for workers/residents during normal operation/accidents
. Tracer gas experiment design and operation technology
. GC analysis and estimation technology of SF6 gas
. Atmospheric dispersion assessment technology (HYSPLIT, etc.)