The portable AFFF fire extinguisher (fig. 5-2) is a stainless steel cylinder containing 2 1/2 gallons of premixed AFFF concentrate and water. It is pressurized with air to 100 psi at 70° and weighs approximately 28 pounds when fully charged.
In this regard, what is the capacity by weight of a portable co2 extinguisher quizlet?
Approximately 28 pounds.
Also Know, which type of fires should you fight with a portable fire extinguisher? These type extinguishers work well on Class B fires involving flammable and combustible liquids, but caution must be taken if they are used in small, tightly enclosed spaces as they could also displace the oxygen you need to breathe.
Beside above, how does an AFFF fire extinguisher work?
Foam fire extinguishers work in 2 ways. AFFF works by smothering the fire and sealing in the flammable vapours. This prevents the fire re-igniting. It also allows foam fire extinguishers to put out flammable liquid fires, by creating a barrier between the liquid's surface and the flames.
How long does it take a fire extinguisher to discharge?
10 to 25 seconds
What is the maximum effective range of a portable co2 extinguisher?
6 feetWhat is the capacity of a portable co2 extinguisher?
When carrying dangerous goods in packed form, portable fire extinguishers with a total capacity of at least 12 kg of dry powder or equivalent shall be provided for the cargo spaces.What are two sizes of potassium bicarbonate portable extinguishers?
What are the two size of potassium bicarbonate (PKP) portable extinguishers? 18 lb. and 27 lb.What is the minimum manning of personnel for a 1 1 2 fire fighting hose?
When in place, a hose team shall consist of the AFFF hose with a minimum of five persons (maximum seven) on each 2-1/2-inch hose and a minimum of three persons (maximum five) on each 1-1/2-inch hose.What is a Class Charlie fire?
A class C fire is an energized electrical fire. “Energized” in this case means that it is fed by a power source. Class A is a category for fires consuming a source like fire or wood that can be extinguished with water, and class B fires are fueled by flammable liquids like gasoline.What color of liquid is AFFF concentrate?
Clear to slightly amber color liquid. Describe the characteristic of AFFF? AFFF concentrate is nontoxic and biodegradable in diluted form. AFFF concentrate may be stored indefinitely without degradation in characteristics.What color of liquid is aqueous film forming foam AFFF concentrate?
Description| TYPICAL PHYSIOCHEMICAL PROPERTIES AT 77 °F (25 °C) | |
|---|---|
| Appearance | Pale yellow liquid |
| Density | 1.01 ± 0.02 g/ml |
| pH | 7.0 – 8.5 |
| Refractive Index | 1.3480 minimum |
What command is responsible for the development of shipboard weapons systems?
The systems commands, abbreviated as SysCom or SYSCOM, are the materiel agencies of the United States Department of the Navy, responsible for the design, construction, and maintenance of military systems such as ships, aircraft, and weapons.What should you not use a foam fire extinguisher on?
Foam Fire Extinguisher Use: Effective against both Class A and Class B fires, foam extinguishers can protect environments that are at risk from material fires, involving solids such as paper and wood, and also from fires involving flammable liquids. Dangers: Do not use on domestic chip or fat pan fires.When should you not use a foam fire extinguisher?
Foam Extinguisher (AFFF) Fires involving solids and burning liquids, such as paint and petrol but not suitable for chip or fat pan fires. Safe on fires caused by electricity if tested to 35kV (dielectric test) and a 1m safety distance is adhered to. Do not use on chip or fat pan fires.What Is in a Class D fire extinguisher?
Class D. Class D fires involve combustible metals, such as magnesium, titanium, potassium and sodium as well as pyrophoric organometallic reagents such as alkyllithiums, Grignards and diethylzinc. These materials burn at high temperatures and will react violently with water, air, carbon dioxide and/or other chemicals.What would you use a foam fire extinguisher for?
Foam fire extinguishers can be used on Class A and B fires. They are most suited to extinguishing liquid fires such as petrol or diesel and are more versatile than water jet extinguishers because they can also be used on solids such as wood and paper.Where do you aim foam extinguishers?
Where to aim the fire extinguisher hose:- Flammable liquids Aim the hose at a vertical surface near the fire, do not spray directly at the fire as this could cause the fire to be pushed and spread to surrounding areas.
- Solid combustibles: Aim the hose at the base of the fire, moving across the area of the fire.
