What is the purpose of a fire department connection?

The Fire Department Connection, also commonly known as the siamese connection, is an important component found on most sprinkler and standpipe systems. When a fire sprinkler system activates, the FDC provides a means for firefighters to connect hose lines to supplement the fire sprinkler system’s domestic water supply.

What is the purpose of a fire department connection FDC quizlet?

What is the purpose of a Fire dept connection ( FDC )? Allows FIre dept to pump supplemental water into a standpipr system or sprinkler system.

Why is a Siamese connection used?

Siamese connections are to be equipped with plugs or caps. This is to prevent dirt and other foreign objects from entering the piping, which would inhibit water flow or prevent the connection from being used during an emergency.

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What is a fire department connection Clapper?

Clappers guide water through fire department connections Pressurized water moving through fire department connections can close built-in clappers. These clappers prevent water from exiting through open inlets. On an FDC with two or more inlets, clappers allow firefighters to add or remove hoses as needed.

How does a fire riser work?

As a fire sprinkler discharges, water flows out of the pipe, or branch line, it’s connected to. When that happens, water moves through the system riser to refill the branch line. These changes in flow and pressure are monitored at the riser by electronic devices called water flow switches.

What pressure do you pump a FDC?

All pumpers will pump their capacity at 150 psi at the pump, so increase the throttle slowly until your discharge pressure is at 150 psi while being careful not to run away from your water supply. If your pumper is equipped with a multi stage pump, place the pump in the volume stage.

Why is it dangerous to work below the hot gas layer without attempting to cool it?

Why is it dangerous to work below the hot gas layer without attempting to cool it? The hotter the gas layer is, the more toxic the fumes are. The smoke contains fuel, and it may ignite at any time.

Which members of the fire department are usually the first to come in contact and interact with the public?

Firefighters are usually the FIRST to come in contact and interact with the public. This answer has been confirmed as correct and helpful.

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When attacking a vehicle fire crews should?

When attacking a vehicle fire, crews should: Approach at a 45-degree angle from the side of the vehicle. Which type of alternative vehicle fuel has a flame that is invisible during the day and should be allowed to burn itself out?

How does a Siamese valve work?

Siamese FDCs will contain either a single or double clapper to channel the flow of water coming into the system. If two hoses are connected, the equal pressure will cause the clapper in the middle of the body to let water flow in from each side. Double clappers provide greater control.

What is a Storz connection?

Invented by Carl August Guido Storz in 1882, a Storz connection is a type of hose coupling used to connect large diameter hose to a fire sprinkler or standpipe system. Storz solves a common problem faced by firefighters: mismatches between couplings.

How do Siamese connections work?

Inspired by the Y-shaped Siamese twins, a Siamese connection is a Y shaped fire department connection with two female inlets through which firefighters can attach two hoses and refill standpipes or sprinkler systems with water. The siamese connection is alternatively called FDC ( Fire Department Connection ).

Can you park next to a fire department connection?

Unless the curb in front of it has unrelated marked rules, feel free to park in front of it. That is called a siamese connection; it is linked to a building’s standpipe system. You can park in front of one.

What type of sprinkler system is full of water under pressure at all times?

Wet-Pipe Sprinkler System This type of system is the most common and is typically the easiest to design, install, and maintain. Wet-pipe systems contain water under pressure in the overhead piping at all times and utilize a series of closed sprinklers.

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What type of sprinkler system is not required to have a fire department connection?

A fire department connection ( FDC ) is required for most NFPA 13 and 13R automatic sprinkler systems and standpipe systems. They are not required for automatic sprinkler systems protecting one- and two-family dwellings and townhomes.

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