Safety Signals

Reference data and engineering information about safety signals for miscellaneous applications.

safetysignals

Overview

Engineering reference data for Safety Signals in miscellaneous.

$y = x \cdot k$

Multiply by conversion factor.

$y = y_1 + \frac{(x - x_1)(y_2 - y_1)}{x_2 - x_1}$

Estimate between two known points.

$p = \frac{\text{part}}{\text{whole}} \times 100\%$

Part as fraction of whole.

9 rows

Standardized Safety Color Codes for Plant Equipment and Pipe Identification
Color Code	Primary Category	Example Applications
RED	Fire Protection	Alarm boxes, extinguishers, hose locations, hydrants, exit signs, flammable liquid cans, sprinkler piping.
YELLOW	Caution	Locomotive fronts, handrails, exposed edges, guardrails, pillars, forklifts, doorway projections, cranes, caution signs.
PURPLE	Radiation Hazards	Radiation hazards.
ORANGE	Dangerous Machinery	Pulleys, gears, rollers, cutting devices, power jaws, safety buttons, electrical switch/fuse boxes.
BLUE	Warning - Equipment Under Repair	Ladders, scaffolding, electrical controls, elevator controls, boilers, machinery under repair.
GREEN	Safety Equipment & Location	First aid dispensers/kits, gas masks, stretchers, safety showers, safety instruction signs.
GREEN (LOW)	Low-Hazard Materials	Piping for non-poisonous, non-flammable materials at low temperatures/pressures.
YELLOW/ORANGE	Dangerous Materials	Piping for flammable liquids (gasoline, naphtha), corrosive liquids (acids, alkalis), high-temp/pressure water/steam/air.
BLUE (PIPE)	Protective Materials	Piping for protective gases that counteract or neutralize hazardous fumes.

Source: engineeringtoolbox.com

The color codes follow these primary standards:

Beyond general equipment, colors also follow a specific logic for identifying pipe contents:

RED: Fire protection and sprinkler systems.
YELLOW / ORANGE: Dangerous materials (flammable, poisonous, corrosive) or high-energy media (high-pressure steam/air).
GREEN: Low-hazard materials or general safety equipment locations.
BLUE: Protective materials used to counteract hazards.