What are the four basic components of a dry chemical extinguishing system?

What are the four basic components of a dry chemical extinguishing system?

• A. Storage tank, piping, nozzles, alarm box
• B. Storage tank, hoses, nozzles, valve
• C. Storage tank, piping, nozzles, actuating mechanism
• D. Storage bag, piping, nozzles, pressure gauge

Answer: (C)

The essential idea is that a fixed dry chemical extinguishing system must have a place to hold the powder, a route to move it to the hazard, outlets to disperse it, and a way to trigger the release. The storage tank is the reservoir that holds the dry chemical until discharge. The piping provides the path from that tank to the discharge points. The nozzles are the outlets that distribute the powder into the protected space for effective coverage. The actuating mechanism is what initiates the release, and it can be automatic or manual, incorporating whatever device triggers the valve and starts the discharge. Other choices include items like an alarm box, hoses, a storage bag, or a pressure gauge, which aren’t part of the four basic components needed to actually store, transport, disperse, and release the extinguishing agent.

The essential idea is that a fixed dry chemical extinguishing system must have a place to hold the powder, a route to move it to the hazard, outlets to disperse it, and a way to trigger the release. The storage tank is the reservoir that holds the dry chemical until discharge. The piping provides the path from that tank to the discharge points. The nozzles are the outlets that distribute the powder into the protected space for effective coverage. The actuating mechanism is what initiates the release, and it can be automatic or manual, incorporating whatever device triggers the valve and starts the discharge.

Other choices include items like an alarm box, hoses, a storage bag, or a pressure gauge, which aren’t part of the four basic components needed to actually store, transport, disperse, and release the extinguishing agent.