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Airport crash tenders offer relatively good acceleration for their size and weight, are able to negotiate rough terrain outside the airport area, carry large capacities of water and fire fighting foam, are fitted with powerful high-capacity pumps and water/foam cannons, and are capable of delivering firefighting media over long distances. They ...
Firefighting foam is a foam used for fire suppression. Its role is to cool the fire and to coat the fuel, preventing its contact with oxygen, thus achieving suppression of the combustion. Firefighting foam was invented by the Moldovan engineer and chemist Aleksandr Loran in 1902. [1] The surfactants used must produce foam in concentrations of ...
In particular, the FAA was concerned that pre-foaming would deplete firefighting foam supplies in the event they were needed to respond to a fire. [1] Also, foam on the runway may decrease the effectiveness of the landing airplane's brakes, possibly leading to it overshooting the runway. Starting in the early 2000's, the environmental risk of ...
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.
RCAC standards have a crimson field and the CSOR standard has a tan field. RCAC regiments other than horse guards and dragoon guards have crimson regimental guidons. Each battalion of the Royal Canadian Infantry Corps, except those of rifle regiments, has a stand of two colours: a king's colour and a regimental colour.
The density of the foam varies with the type being used; Type 2.5 is a white to light amber foam weighing 2.5 pounds per cubic foot, while Type 1.8 is a pale blue to green foam weighing 1.8 pounds per cubic foot. [3] Chopped fiberglass strands embedded in the foam add to the structural integrity through physical support and shrapnel mitigation.
An outdoor fire is always fed with air, and the risk to people is limited as they can move away from it, except in the case of wildfires or bushfires where they risk being easily surrounded by the flames. It might, however, be necessary to protect specific objects like houses or gas tanks against infrared radiation, and thus to use a diffused ...
The truck chassis were provided by Mercedes-Benz and the water spray devices were also made by German firm Ziegler. [23] The three water cannon cost HK$27 million to purchase, a sum that was criticised as overpriced. [citation needed] The vehicles were frequently used by police on participants and bystanders during the 2019–20 Hong Kong ...