Calcium carbide (CaC₂) also called calcium carbide, natural state for the white crystalline solid, belongs to wet flammable goods, dry non-combustible, and water or moist air contact easy to produce highly flammable acetylene gas (explosion limit of 2.5%-82%< volume percentage >), and acid contact will have a violent reaction, release heat, may cause spashing.

With the coming of flood season and the increase of rainy and wet weather, the production, use and storage enterprises of calcium carbide should strengthen risk control according to the dangerous characteristics of calcium carbide.

First, pay close attention to meteorological forecasts and flood disaster warning information, and implement flood prevention, rain prevention, moisture-proof measures.

Second, calcium carbide storage process should ensure that there is no water or damp, stored in a cool, dry, well-ventilated, do not leak rainwater storeroom, is strictly prohibited after damp packaging storage, storage temperature is controlled below 32℃, relative humidity is kept below 75%, do not mix with acids, halogen (fluorine, chlorine, bromine), alcohol and other mixed storage.

Third, calcium carbide in the process of road transportation should pay attention to the influence of weather, season, temperature and other natural factors, choose the appropriate weather and climate conditions to transport. In case of rain or snow, stop at relevant stations in time, and take safety measures such as preventing moisture.

Fourth, when calcium carbide is on fire in water, dry sand, carbon dioxide or dry powder extinguisher should be used to extinguish the fire. It is forbidden to use water and foam extinguishing agent to extinguish the fire.