Monitoring and Actuating device for Gas Extinguishing System in Nuclear Power Plant

摘要

The present invention relates to a device to measure and maintain a designed concentration of gas fire extinguishing equipment in a nuclear power plant. In particular, disclosed is a device to measure and maintain a designed concentration of gas fire extinguishing equipment in a nuclear power plant, installed in a plurality of positions inside a fire-protected area to check whether or not a fire extinguishing gas corresponding to a standard is discharged when fire occurs in a fire-protected area wherein a fire extinguishing gas of a gas-based fire extinguishing equipment is discharged and to measure the concentration of fire extinguishing gas inside the fire-protected area, and calculate the amount of additional agent to transmit an additional discharge signal to the gas-based fire extinguishing equipment when the fire extinguishing gas corresponding to the standard is not discharged; thus ensuring fire extinguishing performance of the gas-based fire extinguishing equipment. Moreover, the concentration of carbon dioxide is directly measured inside the fire-protected area, thus enhancing reliability due to reducing measurement error and also measuring the concentration of oxygen at the same time to enhance measurement reliability of the discharge concentration of carbon dioxide. When the measured concentration of fire extinguishing gas does not reach the designed concentration, the amount of additional agent is calculated by an additional agent amount calculation formula and an additional discharge time in accordance with the calculated amount of additional agent that is calculated to transmit the additional discharge time to the fire extinguishing equipment; thus providing an effect capable of ensuring the performance of the fire extinguishing equipment.