The Field Test Methods for the Effect Analysis of Electromagnetic Pulse (EMP) in Operating Nuclear Power Plants

The EMP field test measures the transfer characteristics in which the external electromagnetic pulse (EMP) threat is coupled internally in the EMP impact assessment of operating NPPs. The EMP transfer characteristics are classified into radiation. The physical size of a nuclear power plant is very large and the use of high-frequency signals in the nuclear power plant is strictly restricted, making it is practically difficult to evaluate the EMP transfer characteristics using a high-level EMP signal. Therefore, EMP field tests should be carried out during the overhaul period of the nuclear power plants. The measured shielding effect will be compared with the simulation results to identify weak points in the walls and openings. The test results of the structure shielding effectiveness and cable path loss are used to predict the actual radiated and conducted EMP threat level in the room where the object device is located.