Safety Signals

Overview

Engineering reference data for Safety Signals in miscellaneous.

Key Formulas

Unit Conversion

$y = x \cdot k$

Multiply by conversion factor.

Linear Interpolation

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

Estimate between two known points.

Percentage

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

Part as fraction of whole.

Variables

Symbol	Description	Unit
$x$	Input value	—
$y$	Output value	—
$k$	Conversion factor	—

Safety Standards

The color codes follow these primary standards:

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

Pipe Identification Logic

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.

References

• Original Source