Research on Mobile Emergency Cooling System for Spent Fuel Pool in Nuclear Power Plant

In order to solve the issue of safe heat removal from the spent fuel pool after an accident similar to the Fukushima Daiichi Nuclear Power Plant Unit 4, a mobile emergency cooling system for the spent fuel pool in nuclear power plants has been developed by analyzing the characteristics of no power supply available on site, loss of cold chain, and emergency response time. The main equipment is centralized on the same mobile platform in the system, forming an integrated mobile emergency cooling device. The device comes with its own power source and cooling equipment that directly discharges heat into the atmosphere, with power self-sufficiency and a separate heat sink function. The device implements the modular design of cooling function, and each equipment in the device is fixedly connected. After an accident, it can be connected with the pre-laid water supply and return pipelines of the spent fuel pool through a hose. It can be quickly put into operation after an accident, and stably export the decay heat in the spent fuel pool. In addition, through the standardized design of the external dimensions of the mobile emergency cooling device, it can meet the relevant national standards for ordinary highway traffic inside and outside the plant. It can carry out mobile emergency response among different units in the plant, and can also carry out emergency rescue for units at other sites. © 2023 Atomic Energy Press. All rights reserved.