Why are the connections on the floor below the fire used most frequently?
1. This allows the use of the connections on the fire floor as well.
2. The fire is approached from below rather than above.
3. If the fire were approached from above with the stair doors open and the heat of the fire rising, it would be similar to approaching the fire through a chimney.
4. It is easier to go up than down.
a. 1, 2
b. 2, 3
c. 3, 4
d. 1, 2, 3
e. 1, 2, 3, 4.
Answer: D
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3rd Class A2 Chapter 15
- Emergency preparedness means having plans in place in the event of an emergency.
- Foam-Water Sprinkler Systems is used in areas where flammable and combustible liquids are processed, stored, or handled; a water discharge may be ineffective for controlling or extinguishing fires.
- In most cases, it is desired a water spray be used to extinguish burning gases, such as LPG (Liquefied Petroleum Gas).
- Fixed water spray systems are most commonly used to protect equipment from exposure fires in flammable liquid and gas tankage, piping, and equipment.
- Hydrant spacing is usually determined by the fire flow demand established on the basis of the type, size, occupancy, and exposure of structures.
- Standpipes for risers of less than 30 m are usually NPS 102 mm pipe, over 30 m, the pipe is usually NPS 152 mm. Where a building has a high level fire zone; that is, floors more than 85 m above street level, then the riser to these higher floors is usually NPS 203 mm. Standpipes for risers of less than 30 m are usually NPS 102 mm pipe, over 30 m, the pipe is usually NPS 152 mm. Where a building has a high level fire zone; that is, floors more than 85 m above street level, then the riser to these higher floors is usually NPS 203 mm.
- Fire detection provisions are not needed so that automatic or manual fire suppression can be initiated.
- The first dry chemical fire-extinguishing agent to be formulated was based on sodium bicarbonate.
- Central Foam Distributing Systems consist of an enclosure housing a foam concentrate supply tank and a _____ device.
- The best method of thawing a hydrant is by means of a:
- _____ is often the first indicator of fire, so a system of automatic detectors should be used.
- There is always a risk of an emergency, no matter how complete the:
- In large industrial settings, workers on shift will be trained in specific _____ to follow in the event of an emergency, including fire.
- Foam systems are used where flammable liquid fire protection is required for permanently installed hazards, such as fuel storage tanks or dip tanks containing flammable or combustible liquids, _____ and distributing devices are installed internally in the tank.
- Fire protection of large outdoor fuel tanks requires that several foam chambers with foam-makers be installed at equally spaced positions slightly below the _____ of the tanks.
- Fixed _____ sprays are designed specifically to provide optimum control, extinguishment, or exposure protection for special fire protection problems.
- The fixed water spray piping system is connected to a water supply through a _____ valve that can be actuated both automatically and manually to initiate the flow of water.
- Ways to detect freezing in a hydrant include:
- Sprinkler systems consist of a pressure or gravity tank to maintain the correct water pressure, control valves for each section, and lengths of piping fitted with:
- A safe rule to follow is to bury the top of the pipe not less than _____ below the lowest frost line for the locality.
- For average conditions, hydrants normally are placed about _____ from buildings.
- There are two types of fire hydrants in general use today.
- The main elements of a fire protection system for an industrial site include.
- Standpipe systems are used in buildings over _____ in height, since that is the practical limit for firefighters to couple hose together from the pump truck at street level up the stairways to the fire floor.
- As it is heated, a _____ deforms in the direction of the contact point.