Stage curtain fire protection design

2023/03/17

How can the fire protection design of stage lighting pass the fire safety inspection and be recognized as qualified? The fire performance of stage building components and building materials must meet national standards or industry standards. Stage curtains must be flame retardant. According to the regulations of our country, the combustion performance of building decoration materials is divided into four grades.

Among them, Class A is non-combustible, and Class B1 is flame-retardant. Most of the stage curtains in the past were B3 level, that is, flammable. Generally, if the stage lighting equipment burns the fire on the stage curtain, the combustion performance of the curtain is B3, which is flammable.

The "Code for Fire Protection Design of Building Interior Decoration" stipulates that the combustion performance of the curtains (curtains) used in cinemas, auditoriums, auditoriums, theaters, concert halls, and gymnasiums cannot be lower than B1, that is, they should be flame-retardant fabrics. Therefore, when checking and accepting the level of combustion performance of the curtains in these places, we should pay great attention to whether these curtains are flame-retardant fabrics, and whether they have a certificate of inspection by the fire department.

my country's "Building Design Fire Protection Code" stipulates: "When there are combustibles in the ceiling, the distribution lines should be protected by metal pipes.

""When the high temperature part on the surface of the illuminator is close to combustibles, fire protection measures such as heat insulation and heat dissipation should be taken. The lead-in wires of tungsten-halogen lamps and incandescent bulbs with a rated power of 100W and above, recessed lamps, and recessed lamps should use non-combustible materials such as magnetic tubes, asbestos, and glass filaments for heat insulation protection. ""Incandescent lamps, halogen tungsten lamps, fluorescent high-pressure mercury lamps (including ballasts) over 60W should not be installed directly on combustible decoration or combustible components.

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The power distribution lines on the stage should be "protected by wearing metal pipes". Moreover, the diameter of the metal pipe should be leeway, and grounding measures should be taken, and the burrs of the pipe head and pipe collar should be ground off, so as not to scratch the insulator when the wire passes through the pipe, causing leakage and short circuit fire. Personnel engaged in electrical installation work shall be professionals who have been qualified by relevant departments.

The floodlights and ceiling lights on the stage should not be designed in a vertical direction relative to the curtain, but should be staggered with the curtain. Otherwise, if the explosion of the bulb produces sparks, it may cause a fire.

Special attention should also be paid to the distance between the light bulb and the curtain.

According to tests, the surface temperature of a 100W incandescent bulb in working condition can reach 200-300°C, the surface temperature of a 1000W incandescent bulb can reach 300-500°C; the surface temperature of a 1000W halogen tungsten lamp can reach 700-800°C. When the flammable curtain is close to the lamp, it usually only takes 20 to 30 minutes to catch fire. Therefore, a safe distance of at least 50-100cm should be kept between lamps and flammable curtains.

The ballasts of fluorescent lamps should preferably be protected by fuses. When installing, put the bottom of the ballast upwards and place it flat instead of vertically to prevent the insulating oil from overflowing and catching fire when the ballast heats up. On a carpeted stage, do not directly set up power cords, switches and electrical sockets, and do not place light regulators, lighting consoles, etc. directly on the carpet or on the wooden floor.

The carpets and wooden boards laid on the stage should be flame retardant. If it is necessary to lay power lines under wooden floors and carpets, metal pipes should be used for threading, and the junction box should also be metal and fixed with clip screws, so as not to put pressure on the wire pipes.

When it is necessary to install telephones, electric bells, and electric clocks on the stage, the weak voltage wires must be separated from the strong voltage power wires.

Broadcast wires and light wires must be separated. It is best to use quartz electric clocks, quartz electric bells and battery intercoms to reduce the risk of fire. Stage lighting equipment products must adopt nationally recognized products that conform to national standards or industry standards, and meet the relevant national fire safety technical regulations.

No matter how good the stage lighting design is, it must be matched with better stage fire protection design, such as fire hydrants, automatic sprinkler equipment, automatic fire alarm equipment, emergency broadcasting equipment, emergency lighting equipment, smoke exhaust equipment, etc. Doing a good job in the fire protection design and specific construction work of stage lighting is responsible for the safety of the audience and cast members, and must not be taken lightly

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