Task Force Tips MASTERSTREAM Series Instructions For Installation, Safe Operation And Maintenance page 4

OPERATING NOTE ABOUT AUTOMATIC NOZZLES: The automatic nozzle is considerably different than "conventional" nozzles
because of basic changes in the operating principle. These differences not only assure the most effective operation under a variety
of conditions, but will also utilize the available water supply most effi ciently. It is important that nozzle operators, pump operators, and
offi cers be fully aware of these differences. Therefore, proper instruction is required for safe and effective operations.
This equipment is intended for use by trained personnel for fi refi ghting. Their use for other
WARNING
purposes may involve hazards not addressed by this manual. Seek appropriate guidance and
training to reduce risk of injury.
Injury can occur from an inadequately supported nozzle. The mounting must be capable of
WARNING
supporting the nozzle reaction force which can be in excess of 2300 lbs (4000 GPM at 120 PSI).
Some volatile liquids can be ignited by static discharge.
WARNING
Static build-up can occur from:
Water is a conductor of electricity. Application of water solutions on high voltage equipment can
WARNING
cause injury or death by electrocution. The amount of current that may be carried back to the
nozzle will depend on the following factors:
Nozzle must be properly connected. Mismatched or damaged threads may cause nozzle to leak or
CAUTION
uncouple under pressure and could cause injury.
Do not couple aluminum to brass. Dissimilar metals coupled together can cause galvanic corrosion
CAUTION
that can result in inability to unscrew threads or complete loss of thread engagement.
The nozzle may become damaged if allowed to freeze while containing water. Always drain after
CAUTION
use to avoid damage and possible loss of use.
1 Electrostatic Hazards of Foam Blanketing Operations by Peter Howels. Industrial Fire Safety July/August 1993
2 The Fire Fighter and Electrical Equipment, The University of Michigan Extension Service, Fourth Printing 1983. Page 47.
©Copyright Task Force Tips, Inc. 1999 - 2011
• Electrochemical separation of charge as water drains through low conductivity, refi ned
products.
• Applying foam over a low conductivity liquid of suffi cient depth to retain the charge created
as the foam blanket drains.
• Streaming currents as water or foam is introduced into the storage tank.
• Voltage of the line or equipment
• Distance from the nozzle to the line or equipment
• Size of the stream
• Whether the stream is solid or broken
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• Purity of the water
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LIM-030 April 29, 2011 Rev13