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Non-standard EI Fireproof duct

Fireproof ducts (also known as EI fireproof ducts) are similar to other types of ducts. But covered with extra layers of outer covering. As a result, the product has the ability to withstand high temperature thresholds that meet the prescribed fire protection standards. If you are looking for this product, do not miss this article of P69 Mechanical Factory.

What is EI fireproof duct?

According to the latest regulations in Decree 136 on the law on fire prevention and fighting. Regulation QCVN 06:2020/BXD – National technical regulation on fire safety for houses and works. The standard of the duct system applied in this new fire protection system has changed and the requirements are much higher.

In which, the wind pipe and suction equipment, in addition to ensuring the standard TCVN 5687:2010. They must also be made of fire-resistant materials. There are fire resistance limits including different EI limits.

Or to put it more simply, EI fireproof ducts are like other types of ducts. But covered with protective outer layers. Gives the hose the ability to withstand high temperatures according to EI 30. EI 45, EI 60, EI 90, EI 120, EI 180.

EI fireproof duct application systems

The ventilation system in the building includes:

– Smoke extraction ductwork (Smoke extract ductwork)

– Pressurization ductwork

– Basement ventilation system (Carpark ductwork)

– Kitchen extract ductwork (Kitchen extract ductwork)

– Ventilation ductwork

– Air conditioning system

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Standard EI duct of P69 Mechanical Factory

The location of the EI fireproof duct is specified according to the fire resistance limit

Limitation Duct structure Using area/ according to QCVN 06:2020/BXD
EI 30 Combination of wind valve pipe samples with fire resistance limit EI 30, 21mm thickness
The innermost layer of galvanized steel sheet is at least 0.75 mm thickness
20mm thickness layer of fireproof insulation
The outermost layer of galvanized steel sheet is 0.58mm thickness
TDF 58×2.3mm galvanized steel flange
Horizontal axis chimney: Pipes and equipment of the smoke extraction system for other cases. Located within the fire compartment serviced
Valves Exhaust smoke exhaust system for corridors, halls, side corridors. (Do not use thermal fuse valve)
Pressure riser pipe across the door: air supply system when entering to protect against smoke (booster). For the air ducts of the protective air supply system for stairwells and elevator wells. As well as fire-proof night compartments at ground elevations
EI 45 Tube sample assembly. air valve with fire resistance limit EI 45 25mm thickness
Inner layer of galvanized steel wire at least 0.75 mm
24mm thickness layer of fireproof insulation
The outermost layer of galvanized steel sheet is 0.58mm thickness
TDF 62×2.3mm galvanized steel flange
Vertical chimney: Pipes and equipment of the smoke extraction system for pipelines. And the vertical smoke channel within the range of the combustion chamber is serviced. When smoking product burns directly in that service area
Exhaust system valve for exhausting smoke for rooms with 50 people or more at the same time. Calculated according to Table G.9 (Appendix G), in a certain period of time. And with the atrium halls (don’t use thermal fuse valves)
EI 60 Tube sample assembly. wind valve with fire resistance limit El 60 33mm thickness
The innermost layer of galvanized steel sheet is at least 0.75 mm thickness
32mm thickness layer of fireproof insulation
The outermost layer of galvanized steel sheet is 0.58mm thickness
TDF 70×2.3mm galvanized steel flange
The chimney goes across the Basement, Garage: Pipes and equipment of smoke extraction system for smoke pipes and channels within the scope of the fire compartment are serviced. when used to exhaust smoke from closed garages
Fireproof valve: It is not allowed to use thermal molecular fire prevention valve: Not lower than EI 60. When the corresponding fire stop has a fire limit of EI 60
Exhaust system valve for exhausting smoke out of car stalls. And the isolated corridors of the closed garage (do not use thermal fuse valves)
The shaft turbocharger goes across the basement. Garage and vertical shaft pressurized on the ground: Pipes of the inlet air supply system to protect against smoke (pressurization) for the air ducts according to the floor of the air supply system for the fire-blocking spacers, the corridors isolation corridor of closed garage

Application of EI Fireproof duct

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EI Air duct

The application of fireproof ducts in the ventilation systems of the building. It can bring many benefits to investors. Because it helps to save costs on repair investment. It can also ensure that the ventilation system works stably in the event of a fire incident. Here are some ventilation systems that are expected to use EI fireproof ducts to operate at their best:

Ventilation fire ductwork

Fireproof ventilation systems are used to prevent fire spread in the event of a fire. In other words, the fireproof ducts in the system. Can limit fire and temperature spread to other compartments. Conventional metal ducts cannot meet the fire resistance standards for this system because they are prone to melting. Therefore, EI fireproof duct is the most suitable choice for this system.

Smoke extract fire ductwork

The emergency smoke extraction system is responsible for leading smoke and toxic gases from inside the building to the outside. In the event of a fire. Simultaneously directing the fresh outdoor air flow into under the blower system. The fireproof duct will ensure the stable operation of the system in the event of an incident. Maximize smoke out of the building, help in smoke-free area so residents can escape. At the same time, improve the fire protection ability for the building.

Pressurization ductwork

The booster system limits the ingress of smoke into certain critical areas of the building. By making sure the air in those areas has a higher pressure than the neighboring areas. It has the effect of removing smoke from the installed area, helping people inside to evacuate more easily. Since the supply of pressurized air must be maintained throughout the duration of the fire, a fireproof duct should be used to ensure that the booster system operates stably until the end of the fire. .

Kitchen extract fire ductwork

The main purpose of the exhaust system from the stove is to suck smoke and hot air out of the cavity during the use of the stove. During the normal use of the kitchen chimney, the inside of the pipe will accumulate grease. These components are highly flammable and combustible. Therefore, in the event of a fire, the kitchen chimney must have stability, integrity and insulation properties. That is also why it is recommended to use fireproof ducts for these systems.

P69 Mechanical Factory Contact information

Address: Km 18, Thang Long Boulevard, Thach That Quoc Oai Industrial Area, Hanoi

Headquarters: No. 06/165C, Xuan Thuy, Cau Giay, Hanoi

Telephone: 09666 86 969

Hotline: 0989 188 982

Email: kd1@cokhip69.com.vn



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