Fire stopping
In relation to fire protection, the concept of “fire zone” plays an important role, which is related to the safety of the facility. A fire zone is a definite unit defined from a fire protection point of view, which is separated from adjacent units by fire-stopping structures with defined fire resistance limits. For the operation of the facility, it becomes necessary to create penetrations on these fire-resistant structures, and it is extremely important to properly seal these penetrations with a fire-resistant seal in order to ensure that the safety level does not decrease. To solve this, fire-stopping and often intumescent or heat-absorbing ( ablative) systems are typically installed.
- Intumescent system
- Heat-absorbing (ablative) system
- Fire protection of air ducts and cable trays
- Fire protection gap sealing
Intumescent system
Materials that form a foam-carbon layer under the influence of high temperatures form a heat-insulating layer on the cable treated with them or fill the gap and prevent the further spread of the fire in the seal.
Coatings, putties:
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Wraps, collars, Bandages:
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Prepainted mineralwool board:
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Heat-absorbing (ablative) system
Basis of the ablative i.e.: heat-absorbing system is an one komponent putty comprising a special acrylate copolimer which diluting with water can be applied as coating.
Putties, coatings:
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Wraps, collars, bandages:
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Prepainted mineralwool board:
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Fire protection of air ducts and cable trays
The ventilation ducts made of sheet steel do not meet the fire protection requirements by themselves, because they easily heat up and deform in the event of a fire, and therefore the protection of the fire zones cannot be ensured either. However, these ducts can be protected with a certified fire protection covering, but the ventilation duct can also be formed as an independent air duct from fire protection construction boards that are also certified.
Cable trays can be covered with certified fire protection boards if the requirement is to protect the penetrating cables against fire.
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Fire protection gap sealing
Building structures are very often separated from each other by gaps, which in some cases are in the border of the fire zones. In the case of fire zone boundaries, fixed and movement gaps typically can be in the basic structures of fire zones boundaries. The basic types generally are: slab-slab (horizontal seal), wall-wall (vertical seal), wall-slab (vertical or horizontal seal).
Architectural gap sealing:
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Moving gap sealing:
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