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Safety Signals - Recommended Colors

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

Safety Signals - Recommended Colors for 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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Related Topics

Measurements and Instrumentation

Measurement and instrumentation strategies.

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Risk, Reliability and Safety

Risk, reliability and safety in process control systems.

Related Documents

CE Marking

Verifies that a product is designed to the appropriate standards according the European Machine Directive.

Chemicals Hazard Rating System

The National Fire Protection Association (NFPA) hazard system for chemical materials.

Circular Ring - Temperature Expansion

Calculate ring (or pipe) diameter expansion or contraction when temperature changes.

Color Mixing Theory

Subtractive and additive color mixing.

Factors of Safety - FOS

Factors of Safety - FOS - are important in engineering designs.

Fire-Stop Ratings

F-rated, T-rated and L-rated fire-stop systems.

Fluids - Identity Colors

Identifying colors used for fluid piping systems.

Gases - Dangerous Concentration Levels

Dangerous vs. tolerable concentration levels for some industrial gases.

Hazardous Areas - European Classification Standard

European hazardous area classification with zones, protection types, temperature codes and codes.

Hazardous Areas - North America Classification

North American hazardous locations classification with classes, divisions and groups

Hazardous Areas - Protection Techniques according European IECEx

Hazardous areas protection techniques - explosion proof, flameproof and intrinsically safe.

Heating Systems - Safety Valves Size vs. Boiler Power

Safety valves with boilers ranging 275 to 1500 kW.

High Pressure Steam Systems - Safety Valve Capacities

Sizing safety valves according boiler output power in high pressure systems (kW and Btu/hr)

IP - Ingress Protection Ratings

IP - Ingress Protection rating is used to specify the environmental protection - or electrical enclosure - of electrical equipment.

Low Pressure Steam Safety Valves - Capacities

Sizing safety valves after boiler output power in low pressure systems (kW and Btu/hr).

Pilot Operated Safety Valves in Liquid Systems

Calculate pilot operated relief valves in liquid systems.

Pipes and Equipment - Identification Labels

Tags and label colors used for mechanical, plumbing and piping systems.

Safety Valve Standards

The most common used safety valve standards in Germany, UK, USA, France, Japan, Australia and Europe.

Safety Valves in Saturated Steam Systems

Calculate safety valves in saturated steam systems

Spring Operated Safety Valves in Liquid Systems

Calculate spring operated relief valves in liquid systems.

Water Sprinkler Protected Areas vs. Hazard Classification

Maximum fire sprinkler protected area vs. classification and construction.

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