Question

Aster stream devices are usually deployed when:

a. the fire is below ground level.
b. there is an increased risk of flashover.
c. a structure is more than six stories tall.
d. the fire is too large to be controlled by handlines

Answer 1

Master stream devices are deployed when a fire is too large to be controlled by hand-held hoses or handlines. They are necessary for defensive operations and provide a heavy, continuous flow of water or extinguishing agents to manage large-scale fires.

Correct option is D

Step-by-step explanation:

Master stream devices are employed by firefighters to deliver large volumes of water or extinguishing agents onto a fire from a distance. When considering the scenario where such devices are usually deployed, the correct option is that master stream devices are typically used d. when the fire is too large to be controlled by handlines. Handlines are smaller, portable hoses that can be easily maneuvered by firefighters, but they might not deliver a sufficient flow rate to combat large or advanced fires.

Master streams are often used to provide a heavy, continuous water flow in defensive fire operations, where it is unsafe for firefighters to get close, or for cooling and protecting exposures in large-scale fires.