Master_stream

A master stream is a fire service term for a water stream of 350 gallons per minute (1,320 lpm) or greater.

Master streams are often found at the end of aerial ladders, tele-squirt nozzles, or monitor nozzles. The high amount of required pressure makes them unsuitable for handline use.

Risks

A master stream brings with it many risks when used in an urban setting. A master stream should never be fired into a building with people inside, as the force could knock down a supporting wall in a structure and crush victims. Also the steam expanding could cause a blowout or asphyxiation.

References

• Hall, Richard; Adams, Barbara, Eds. (1998). Essentials of Fire Fighting, 4th, Stillwater, OK: Fire Protection Publication. ISBN 0-87939-149-9. 

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