A series of fires have shown that the fire protection design of stage lighting is very important. So, how to design the stage lighting fire prevention, so that it can be recognized as qualified through the fire safety inspection?
Reasonable selection of lamps and lanterns
In places where there are explosive mixtures or where explosive media are likely to be generated during production, integral explosion-proof devices should be used. In places with corrosive gas and special humidity, sealed or moisture-proof lamps should be used, and their parts should also be treated with anti-corrosion. Flood lights can be used in hot and dusty places (such as steelmaking, ironmaking, steel rolling, etc.). Outdoor lighting can use closed lamps or open lamps with fireproof lamp sockets.
Lighting and decorative lamps should be installed correctly
(1) The distance between lamps and combustibles is not less than 50 cm (halogen tungsten lamps are more than 50 cm), and the height from the ground should not be less than 2 meters. When it is lower than this height, protective facilities should be installed. Combustible materials should not be stacked under the bulb.
(2) The protective cover of the lamp must be intact, and it is strictly forbidden to cover the lamp with paper, cloth or other combustible materials.
(3) The power of all concealed and exposed lamps on the combustible ceiling should not be too large, and should be dominated by incandescent or fluorescent lamps. There should be good heat dissipation conditions around the concealed lamps and their heating accessories. The wires of the concealed stage lights, dance floor foot lights, and lamps in the combustible ceiling should be laid in steel pipes or flame-retardant hard plastic casings; the wires near the halogen tungsten lamps should be sheathed with heat-resistant insulation; the wires of the hoisting lanterns There should be rubber ring protection at the place where it passes through the keel.
(4) Select low-temperature ballasts with reliable quality. It is not allowed to directly fix the high temperature ballast on objects such as combustible large flower boards. Its capacitance and capacity must be consistent with the lamp tube.
(5) Class 0 and Class 10 explosion hazard areas (Class 0 area refers to explosive gas, and Class 10 area refers to explosive dust), when using open-type lamps to make wall-mounted niches, the access door should be facing the outside of the wall. Open and ensure good ventilation; the side facing the indoor lighting should be tightly closed by double-glazed glass. The horizontal distance from the door and window frame is not less than 3 meters, and the horizontal distance from the air outlet is not less than 5 meters.
Reasonable control of electrical lighting
The lighting current should have its own branch circuit, and should not be connected after the power main switch. Each branch circuit shall be provided with short-circuit protection facilities. In order to avoid accidents caused by overload and heating, overload protection devices must also be installed in some important places and places where flammable and explosive materials are concentrated. Non-explosion-proof lighting distribution boxes and control switches are strictly prohibited to be used in explosion-hazardous places of class 0 and class 10. Minimize joints after the power distribution panel, and the panel surface should be well grounded.