Combustible garbage discharged by households and businesses are collected by garbage collection trucks and accumulated in the garbage accumulation pits, located in garbage disposal plants, where they are incinerated. Cases have been reported when the garbage gathered in a garbage accumulation pit ignited for some reason, which led to fire disasters, bringing about a large amount of damage to the garbage disposal plants. The garbage accumulation pit fire disaster monitoring system, introduced here, has been developed and delivered to garbage disposal plants for the purpose of offering support for rapidly extinguishing fires by providing an early forecast through the detection of rising temperatures of garbage accumulated in the garbage accumulation pit. The developed garbage accumulation pit fire monitoring system utilizes an infrared thermography system (TVS) developed by Nippon Avionics, which is installed along the perimeters of the garbage accumulation pit for the purpose of monitoring the temperature of the garbage. The system also partitions the garbage accumulation pit into blocks, making it possible to detect a rise in temperature through measurements taken by the TVS, reporting the location where the temperature rise is occurring, as well as the amount of rising temperature, to the central monitoring device as an alarm output, thereby preventing the occurrence of a fire disaster. A case study of this system, which has been delivered, is introduced in this paper.