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  2. Firewall (construction) - Wikipedia

    en.wikipedia.org/wiki/Firewall_(construction)

    Firewall residential construction, separating the building into two separate residential units, and fire areas Example of a firewall used to inhibit the spread of a fire at an electrical substation. A firewall is a fire-resistant barrier used to prevent the spread of fire. Firewalls are built between or through buildings, structures, or ...

  3. High-voltage transformer fire barriers - Wikipedia

    en.wikipedia.org/wiki/High-voltage_transformer...

    The primary North American document that deals with outdoor high-voltage transformer fire barriers is NFPA 850. [1] NFPA 850 outlines that outdoor oil-insulated transformers should be separated from adjacent structures and from each other by firewalls, spatial separation, or other approved means for the purpose of limiting the damage and potential spread of fire from a transformer failure.

  4. Passive fire protection - Wikipedia

    en.wikipedia.org/wiki/Passive_fire_protection

    Canada de-rates closures, where, for instance a 2-hour closure is acceptable for use in a 3-hour fire separation, so long as the fire separation is not an occupancy separation or firewall. The lowered rating is then referred to as a fire protection rating, both for firestops, unless they contain plastic pipes and regular closures. Firestops

  5. Fire door - Wikipedia

    en.wikipedia.org/wiki/Fire_door

    Fire-resistance rated door, with wire mesh glass vision panel Industrial grade fire door rated to hydrocarbon curve and blast resistance Double fire door immediately after 3-hour fire test inside a 4-hour rated Durasteel wall Double fire door after 3-hour fire test in a 4-hour Durasteel wall, during successful 45PSI (3.1 bar) hose stream test leading to a UL Listing [1]

  6. Firestop - Wikipedia

    en.wikipedia.org/wiki/Firestop

    A firestop or fire-stopping is a form of passive fire protection that is used to seal around openings and between joints in a fire-resistance-rated wall or floor assembly. Firestops are designed to maintain the fire-resistance rating of a wall or floor assembly intended to impede the spread of fire and smoke. [1]

  7. Fire retardant - Wikipedia

    en.wikipedia.org/wiki/Fire_retardant

    A fire retardant is a substance that is used to slow down or stop the spread of fire or reduce its intensity. This is commonly accomplished by chemical reactions that reduce the flammability of fuels or delay their combustion. [1] [2] Fire retardants may also cool the fuel through physical action or endothermic chemical reactions.

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