Fire hazards are divided into several categories

The four categories are: light hazard level, medium hazard level, severe hazard level and warehouse hazard level.

Light risk level: buildings for the elderly, buildings for young children, hotels and office buildings with a building height of 24m and below. Buildings with closed systems only in walkways, etc.

Medium risk level: high-rise civil buildings: hotels, office buildings, complex buildings, postal buildings, financial telecommunications buildings, command and dispatch buildings, radio and television buildings (towers), etc.

Severe hazard level: Material preparation and workshops of printing plants, alcohol products, flammable liquid products and other factories. Flammable liquid spray operation area, solid flammable items, flammable aerosol products, solvents, paints, asphalt products and other factories' material preparation and production workshops, photo studios, and the lower part of the stage "grape rack".

Warehouse hazard level: food, tobacco and alcohol, non-combustible and retardant items packaged in wooden boxes and cartons, shelf areas of warehouse-type shopping malls, etc. Wood, paper, leather, grains and products, cotton, wool, linen, silk, chemical fibers and products, household appliances, cables, Group B plastics and rubber and their products, steel-plastic mixed material products, various non-combustible items packaged in plastic bottles and boxes, and various items Mixed storage warehouses, etc.

Fire refers to the disaster caused by burning out of control in time or space. The new standard defines fire as an uncontrolled burning in time or space. Among various disasters, fire is one of the most frequent and common major disasters that threatens public safety and social development. On April 3, 2022, according to a report from the Fire and Rescue Bureau of the Ministry of Emergency Management, in the first quarter of this year, 219,000 fires were reported nationwide. There were 625 fire deaths, 397 injuries, and direct property losses of 1.52 billion. Yuan. Compared with the same period last year, the number of fires, injuries and losses decreased by 11.6%, 8.5% and 20.5% respectively, and the number of fatalities increased by 4.9%; among them, there were 29 major fires, an increase of 6 compared with the same period last year.