1, size
The dimensions of the fireworks display are: 1 inch, 2 inches, 2.5 inches, 3 inches, 4 inches, 5 inches, 6 inches, 7 inches, 8 inches, 9 inches, 10 inches, 12 inches, 16 inches, 24 inches and so on. Japan is allowed to produce 32-inch or even 48-inch fireworks bombs, but only domestic fireworks bombs smaller than or equal to 6 inches are allowed to be produced and exported.
2. Type
The types of fireworks bombs include:-mine, cylindrical bomb-cylindrical shell and fireworks bomb-Kanto shell and so on. High-altitude fireworks can be divided into spherical bright beads, cylindrical bright beads, modeling patterns, floating, hanging, cylindrical, bullet and so on.
3. Level
According to national standards, fireworks and firecrackers are divided into four levels, and the danger from high to low is A, B, C and D in turn. All fireworks over 72 mm in diameter belong to Class A fireworks. Class A is suitable for products discharged by professional dischargers under certain conditions. Class B products are suitable for outdoor large-scale open space discharge. When discharging according to the instructions, people or property more than 25 meters away from the products and their discharge tracks should not be harmed. Class C products are suitable for outdoor relatively open spaces. When discharging according to the instructions, people or property more than 5 meters away from the product and its discharge trajectory should not be harmed. Class d is suitable for short-distance discharge. When discharging according to the instructions, people or property more than 1 m away from the product and its discharge trajectory shall not be harmed. Class a fireworks bombs cannot be sold in the market.
The effect of fireworks display
The main effect colors included in the fireworks show are: red, blue, orange, yellow, purple, white, gold, silver, green and cyan. Fireworks bombs include brocade chrysanthemum, brocade crown chrysanthemum, garland, tail effect (the ball has a tail-like effect when it is launched), bursting coconut trees, waterfalls, brocade crown waterfalls, golden coconut trees and other effects.
Specific requirements for fireworks display
1. Fireworks and firecrackers must be approved by relevant departments before discharge, and must be operated by qualified professional discharge personnel.
2 units undertaking large-scale fireworks display operations shall have the corresponding qualifications for large-scale fireworks display; The on-site person in charge, safety management personnel, technical personnel and operating personnel who undertake the discharge operation such as drug installation, filling, ignition and testing of the discharge operation unit shall hold the discharge operation certificate.
3. Fireworks and firecrackers shall be set up with full-time security officers and full-time custodians; Minors are not allowed to engage in fireworks and firecrackers, and fireworks workers are not allowed to work after drinking.
4. Sudden change of wind direction at the scene may endanger the viewer; The wind force exceeds level 6 or may endanger buildings, power communication facilities and public safety in the safe area; Sudden rain, fog, etc. Should be suspended or terminated.
5. The early warning range and time of large-scale fireworks display, the place and time of traffic control, and the position and orientation of fire fighting equipment shall be determined by the headquarters.
6. Emergency passages should be set up at the unloading operation site to ensure the smooth flow of emergency convoys.