The massive explosion in Beirut, Lebanon, on August 4, 2020, has killed 154 people and injured more than 6,000. According to a preliminary investigation by Lebanese officials, the accident was caused by 2,750 tons of ammonium nitrate left unattended in Beirut's port for six years. Therefore, how to prevent the recurrence of such accidents in advance has become the focus of every country.

Through analysis we know that ammonium nitrate is actually an ammonium salt, and its chemical formula is NH4NO3. Because of its high nitrogen content, ammonium nitrate is commonly used as a fertilizer or to make explosives. Ammonium nitrate generally appears white crystal, in the encounter high temperature will explode decomposition, and the higher the temperature, decomposition will be more rapid that is, the more violent reaction. And it's worth noting that ammonium nitrate explosions don't happen only at high temperatures. When ammonium nitrate is stored for too long and the storage area is not ventilated for a long time. The heat from its own reaction also causes the ammonium nitrate to explode.

Traditional means of fire monitoring for hazardous waste warehouses are manual patrol inspection or the use of equipment such as smoke sensors and temperature sensors. In many cases, such means can only be detected when hidden dangers on the surface or fire occurs. Using infrared thermal camera can all-weather to monitor waste warehouse, real-time display the temperature of the tested object information and support more than one linkage alarm, more patrol route set, when the target temperature change sharply when alarm and linkage, client, etc to accept alarm message, can be on the target object will fire killed in the bud before a fire.

Infrared thermal camera is more and more widely used in hazardous waste, compared with the traditional monitoring means, infrared thermal camera can play the role of early detection, early prevention, early treatment. Plays a vital role in preventing fires and accidents.