It is a stable material that will not stretch or shrink, even after exposure to extremely high or low temperatures. Glass fabric neither burns nor supports combustion, and offers a combination of properties from high strength to fire resistance. Aluminized glass combines the reflectivity of an aluminized outer surface with glass fabric.There are three primary materials used in proximity ensembles: aluminized glass, Nomex and Rayon. Maximum ambient heat protection is about 2,000 degrees F (1,093 degrees C) for short duration and prolonged radiant heat up to 1,500 degrees F (816 degrees C). Most commonly made of Zetex or Vermiculite and not aluminized. Entry suit used for entry into extreme heat and situations requiring protection from total flame engulfment.Maximum ambient heat protection is about 500 degrees F (260 degrees C). Complete proximity protection for ARFF requires aluminized hood or helmet cover with neck shroud, aluminized jacket and pants with vapor-barrier insulated liner, aluminized lined gloves, aluminized ARFF boots, and aluminized covers for SCBA bottles or suits that cover the air pack. Maximum ambient heat protection is about 200 degrees F (93 degrees C). Approach suit used for work in the general area of high temperatures, such as steel mills and smelting facilities.There are three basic types of aluminized suits. The outer layer of these aluminized ensembles help to reflect more than 90% of the radiant heat thereby helping the rescuer prolong their stay near a fire. Proximity suits are designed for exterior rescue operations and other fire situations where there are hazards and people operating in excessive temperature within the manufacturer's recommended operating range. Improper use includes (but is not limited to) improper selection, use without adequate training, disregard of the warnings and instructions supplied with the suits, and failure to inspect and maintain the suits. Improper use of proximity suits may result in personal injury or death. Proximity firefighting differs from entry firefighting in that the ensemble is not designed for firefighters to enter into flames, but rather to protect from high levels of radiant and conductive heat for a short period of time, for example, the time to approach and close a fuel valve or effect a rescue from a plane crash. It says proximity firefighting is typically exterior operations. NFPA 1971 covers protective ensembles for proximity firefighting. In addition to aircraft fires, bulk flammable liquids, gasses and metals commonly produce high levels of radiant heat - as well as convective and conductive heat. Proximity clothing is designed to protect a firefighter from any fire producing high levels of radiant heat. ![]() ![]() When most firefighters hear the term "proximity suit," they envision the protective ensemble used by firefighters assigned to aircraft rescue firefighting (ARFF).īut this specialized ensemble is not just for ARFF.
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