MAC/MTT-OPS-1
26 FEB 2019
SECTION 6
Employment
6-9
The water cannon system is a very versatile for
many different mining and construction
applications. The straight bore nozzles work very
well in producing a straight stream of water able to
reach out at long distances. The water cannon will
obtain maximum reach when the nozzle is at
about 32 degrees of elevation with the chassis
RPM at high idle. Reach can further be increased
with the addition of in-line stream shaper when
extreme reach is required for "high wall" or
"stockpile" operations.
The water cannon system is also very useful for
"wash down" operations. The system is best suited
for wash down when configured with a remote
adjustable "stream to fan/fog" nozzle. The
operator can adjust the fan or stream pattern as
needed while directing the stream or fan towards
the components for wash down. The operator may
also control water flow and pressure by simply
increasing or decreasing the chassis RPM to obtain
desired water flow and pressure.
Do not point straight streams directly at cab
windows, exhausts or sensitive components.
Equipment damage can be caused when water
cannon is flowing at maximum flow and pressure.
FIRE SUPPRESSION SYSTEM
The fire suppression operations are never typical
and the environment is ever changing. Operators
must always be aware of the type of fire they are
suppressing, wind conditions, the potential
hazards surrounding the fire, the potential heat
generated by the fire and the duration of the fire
suppression system.
General guideline for fire suppression operations
are:
1. Have a basic understanding of the different
classes of fires (A, B, C, and D) and how to
extinguish them.
2. Be familiar with site specific standard
operating procedures for fire suppression.
3. Understand basic fire suppression techniques
for applying foam blankets (rain-down, and
bounce-up).
4. Ensure fire suppression holding tank is full,
system components are serviceable and the
entire system is operational before employing
the system for an actual fire.
5. Obtain Situational Awareness of the site:
a. On scene commander and establish
communication.
b. People and equipment involved in the fire.
c. Duration of the fire suppression system.
d. Wind direction at the site.
e. Hazards and restrictions at the site.
f. Emergency Support people and equipment.
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