Meaning Of Safety Signal Words; Safety - Task Force Tips Masterstream 4000 ER Automatic Instructions For Safe Operation And Maintenance

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MEANING OF SAFETY SIGNAL WORDS

A safety related message is identified by a safety alert symbol and a signal word to indicate the level of risk involved with a particular
hazard. Per ANSI Z535.6, the definitions of the four signal words are as follows:
DANGER
WARNING
CAUTION
NOTICE
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SAFETY

DANGER
WARNING
WARNING
WARNING
WARNING
WARNING
CAUTION
CAUTION
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DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious
injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, could result in minor
or moderate injury.
NOTICE is used to address practices not related to physical injury.
An inadequate supply of pressure and/or flow will cause an ineffective stream and can result
in injury or death. Choose operating conditions to deliver adequate fire suppression. See flow
graphs.
This equipment is intended for use by trained personnel for firefighting. Use of this equipment for
other purposes may involve hazards not addressed by this manual. Seek appropriate guidance and
training to reduce risk of injury.
The stream exiting a nozzle is very powerful and capable of causing injury and property damage.
Make sure the nozzle is securely attached and pointing in a safe direction before water is turned on.
Do not direct water stream to cause injury or damage to persons or property.
Inadequately supported nozzle reaction force can result in injury or death. The mounting must be
capable of supporting the maximum nozzle reaction force as stated in the nozzle's manual.
Equipment may be damaged if frozen while containing significant amounts of water. Such damage
may be difficult to detect visually. Subsequent pressurization can lead to injury or death. Any time
the equipment is subject to possible damage due to freezing, it must be tested and approved for
use by qualified personnel before being considered safe for use.
Application of water or foam solutions on energized electrical equipment could cause
electrocution. Serious injury or death could result. Assume circuits are energized until confirmed to
be de-energized. Do not apply water or foam to energized electrical equipment.
Mismatched or damaged waterway connections may cause equipment to leak or uncouple under
pressure. Failure could result in injury. Equipment must be mated to matched connections.
Dissimilar metals coupled together can cause galvanic corrosion that can result in the inability to
uncouple the connection, or complete loss of engagement over time. Failure could cause injury. Per
NFPA 1962, if dissimilar metals are left coupled together, an anti-corrosive lubricant should be
applied to the connection and the coupling should be disconnected and inspected at least
quarterly.
3 LIM-032 November 30, 2020 Rev01