alarm
alert
background
chemical
container
control
danger
emergency
equipment
extinguisher
fighting
fire
fire extinguisher
firefighter
fireman
flame
foam
handle
hazard
heat
help
hose
industrial
isolated
metal
necessity
object
office
opportunity
portable
powder
precaution
pressure
prevention
protection
red
rescue
safe
safety
security
service
sign
smoke
symbol
system
technology
tool
wall
warning
white