Water Prohibited as Extinguishing Agent safety sign. This sign indicates that water should not be used as a fire extinguishing agent.
This sign is used in areas where Electricity, Flammable Liquids, Greases, Gas and Combustible Metals (sodium, titanium, magnesium, etc) are used and should not be extinguished with water.
Used in conjunction with (WW7) Beware of Electric Shock safety sign.