Passive Fire Protection Coatings

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Passive Fire Protection Coatings

Fire protection is important for:

Personnel protection – giving people time to escape or shelter from the effects of the fire, Assets protection–minimizing damage to the assets before f ire services arriving.

Fire strikes when least expected. The speed at which the fire travels or propagates even a small accidental fire or electric spark caused by short circuit is sufficient to create huge, immeasurable damage to the safety of people and properties. The fire can start from external source or internal source, just from anywhere and without warning. Fire takes advantage of unprotected surfaces and areas concealed from fire fighters. The consequences - overwhelming heat, suffocating smoke, loss of time, damage to items of sentimental value and above all, the loss of life. The insurance company may able to replace the material goods, but there are few things that money simply cannot replace.

The conventional paints coated over structural steel, concrete and wooden surfaces are flammable and indeed act as a fuel which aid in spreading of fire. The intense heat conducted through metal ignites the paint and combust spontaneously even if not subjected to a flame directly. In the event of fire, the winning time is crucial in evacuating the people and limiting the amount of structural damage. There is no second chance with the fire. One has to do it right first time.

 

How Hir's Flame-Guard coating protects in the event of fire?

Hir's Flame-Guard fire retardant coatings offer ultimate protection in extensive applications like Industries, Institutions, Corporate houses, Show rooms, Residences, Schools, Dormitories, Hospital Care, Nursing Homes, Hotels, Motels, Retail stores, Restaurants, Transportation etc., on structural steel, concrete, cables, wood, rubber, PVC, canvas, gypsum board, polyurethane foam, wooden surfaces, joists, beams, acoustic tile, rough and finished timbers, open surface panel board, previously painted wall board, hardwoods, softwoods, drywall, SPF plywood, etc
This coating after application dries quickly to a matt finish. On contact with fire or excessive heat, the coating puffs up (intumesces) to several times thicker than original coating film, forming a sponge - like cellular foam insulating char layer and reduces available oxygen to the surface. Intumescing is a substance which swells as a result of heat exposure, thus increasing in volume, and decreasing in density. An insulating char of low thermal conductivity that reduces heat transfer to substrate and slows the temperature rise of the substrate. The product works by cutting off oxygen from the fuel source inhibiting the combustion process in the immediate vicinity of the area and reduces the transmission of fire, heat and smoke to the protected area like fire retardant jacket during and after exposure to fire. Even after prolonged exposure to a fire the coatings is not destroyed and continue to shield the substrate by forming low conductivity carbon char that act as a barrier between the fire and the substrate. This substantially decreases the temperature rise, smoke generation and finally insulates and protects the substrate from the heat of the flame.
The rating of fire retardant coatings depends on the intensity of the flame, type, coating thickness and other variables. More thickness of the coatings increases fire protection duration. The coating adheres tightly and fits to any size and shape of the substrate. It produces neat, attractive and paintable finish. The coatings are non-toxic, asbestos free and resist cracking or crumbling.

Active Fire Protection Vs Passive Fire Protection:

Active Fire Protection

Passive fire protection

Methods that require a certain amount of motion and response in order to react to put out the fire by locating smoke, % Ames or heat, e.g. Smoke & Heat extraction systems, Sprinkler systems, Fire extinguisher systems, Gaseous clean agents, Fire fighting foam. Methods that contain, minimize the impact, or slow the spread of the fire. Contrary to active are protection the coating system becomes an integral element of structural are protection and fire safety in buildings within a specified fire compartment as well as ensuring that the load bearing capacity of the fire exposed structure is not reaching a critical level, the passive type does not need a response before reacting to the fire e.g. Intumescent coatings, Retardant coatings, Resistive coatings ,Ablative coatings.


 

CABLE PROTECTION

Flame-Guard CP

Intumescent fire protection coating for combustible single & bunched electrical cables and cable trays
Flame-Guard CP is a water-based intumescent coating which is designed to prevent ignition, flame spread & smoke emission along the jacketing of electrical (or other) cables and to provide a thermal barrier for protection against heat damage. Flame-Guard CP will also prevent a short circuit within an electrical cable from starting a fire and will help identify the location of such a short circuit by forming an intumescent char at the spot. The coating can be applied to grouped cables or single cables. When exposed to flame or to a temperature above 175ºC, the coating forms a protective intumescent char. (This char should be removed completely and clean cables should be recoated if intumescences should occur). The coating foams up under the effect of heat to form an insulating layer. There is no subsequent burning of protected cables after the direct effect of fire has been halted.


 

STRUCTURAL STEEL PROTECTION

Flame-Guard ZP

Flame-Guard ZP - Primer
Epoxy based zinc rich primer for fire protection coating for structural steel. It protects steel against corrosion & prepares the surface for Base Coat.
Flame-Guard SSP - Base Coat
During fire when the structural steel temperature approaches 538°C it loses 60% of its yield strength and may lead to the building collapse. Flame-Guard SSP Base Coat – coated to desired thickness prevents steel structures from crossing the critical temperature of 538°C, thus delaying the collapse of loaded steel structures for up to 2 hours and providing time for evacuation & fire fighting. The smooth fiber free robust decorative surface allows the architect to use the structural steel work as an integral part of the building design. Rapid installation with typically DFT's below 2mm, appearance of the structure is preserved without affecting the load bearing calculations. In case of fire, the film expands to many times its original film thickness. This provides an insulating foam-like coating or char to protect steelwork against heat build-up and the effects of fire.
Flame-Guard SSP - Top Coat
Thin film high solids intumescent coating provide maximum protection & enables a high quality finish to be obtained similar to conventional decorative paints. A hard decorative self-extinguishing, fast drying finish to seal the basecoat & provide an attractive high quality finish. Recommended as a top coat over Flame-Guard SSP Base Coat for optical reasons and moisture protection. The coating facilitates as sealer function to prevent early degradation and inactivation of intumescent layer. Available in various RAL shades.


 

WOOD PROTECTION

Flame-Guard CC

Single component, chlorinated water resistant intumescent clear coating that contains highly effective fire retardants to reduce flame spread during the event of fire. The coating can be used over painted surfaces, fiber insulation, polyurethane foam, wood, and other combustible surfaces without compromising on aesthetic appeal. On curing it forms a clear, non-yellowing, water resistant fire retardant finish that protects the substrate from combustion and heat. The coated surface retains its original appearance and in addition protected by the water & weather resistant properties.
 
 
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