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Safety Signals - recommended Colors

American National Standards Institutes schedule for safety colors marking physical hazards

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Recommended use of colors with additional information about piping, duct-work, etc.


PLANT EQUIPMENT
 
RED = FIRE PROTECTION ALARM BOXES
BLANKET BOXES
BUCKETS
EXTINGUISHERS
HOSE LOCATIONS PUMPS
HYDRANTS
SIRENS
EXIT SIGNS
SAFETY CANS AND CONTAINERS FOR FLAMMABLE LIQUIDS
YELLOW = CAUTION FRONT ENDS OF LOCOMOTIVES
HAND RAILS
BULLDOZERS
TRACTORS
EXPOSED EDGES OF PLATFORMS AND CURBING
GUARDRAILS
PILLARS & POSTS
COLUMNS
FORK LIFTS
DOORWAY PROJECTIONS
LOW BEAMS
PULLEY BLOCKS AND CRANES
CONVEYORS
CAUTION SIGNS
PURPLE = RADIATION HAZARDS  
ORANGE = DANGEROUS MACHINERY PARTS (WHICH MAY CUT, CRUSH OR SHOCK) EXPOSED PARTS OF PULLEYS
GEARS
ROLLERS
CUTTING DEVICES
POWER JAWS
SAFETY STARTING BUTTONS
INSIDE OF MOVABLE GUARDS
ELECTRICAL SWITCH BOXES
FUSE BOXES
BLUE = WARNING AGAINST STARTING, OR MOVING EQUIPMENT UNDER REPAIRS LADDERS
SCAFFOLDING
ELECTRICAL CONTROLS
ELEVATOR STARTING CONTROLS
BOILERS
DRYERS
MACHINERY, ETC.
GREEN = SAFETY DESIGNATES LOCATION FIRST AID DISPENSERS
FIRST AID KITS
GAS MASKS
STRETCHER
SAFETY SHOWERS
OTHER SAFETY EQUIPMENT
SAFETY INSTRUCTION SIGNS

IDENTIFICATION OF PIPES
 
RED = FIRE PROTECTION AND SPRINKLER PIPING POST INDICATOR VALVES FOR SPRINKLER SYSTEMS
YELLOW OR ORANGE - DANGEROUS MATERIALS FLAMMABLE LIQUIDS GASOLINE, NAPHTHA, FUEL OIL, ETC.
POISONOUS GASES CHLORINE GAS, AMMONIA, SULPHUR DIOXIDE, ETC.
CORROSIVE LIQUIDS ACIDS, ALKALIS
STEAM, WATER, OR AIR AT HIGH TEMPERATURES AND PRESSURES
GREEN = MATERIALS LOW IN TEMPERATURES AND PRESSURES: NON-POISONOUS NON-FLAMMABLE FIRST AID DISPENSERS
FIRST AID KITS
GAS MASKS
STRETCHER
SAFETY SHOWERS
OTHER SAFETY EQUIPMENT
SAFETY INSTRUCTION SIGNS
BLUE = PROTECTIVE MATERIALS FOR PREVENTING OR REDUCING HAZARDS OF DANGEROUS MATERIALS INCLUDES SPECIAL GASES TO COUNTERACT OR NEUTRALIZE POISONOUS FUMES, WHICH ARE PIPED FOR RELEASING IN EVENT OF DANGEROUS PROTECTIVE MATERIAL OTHER THAN FIRE PROTECTION

Standards

  • ANSI Z535.1 American National Standard for Safety Colors
  • ISO 3864 Graphical symbols -- Safety colors and safety signs
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