Safety signs are used to draw attention to potential hazards in the workplace. There is no single universally accepted safety sign system, but the main systems in use are ISO, ANSI, and EU. Safety signs must be clearly visible, installed at a suitable height, and located where genuine dangers exist. Different types of signs convey different types of information - prohibition signs indicate prohibited actions, mandatory signs require certain behaviors like PPE use, and warning signs provide risk information. Gas cylinder signs use standardized color codes along with detailed labels to identify contents, as color alone varies between locations.

1. MODULE 21- SAFETY AND
HEALTH SIGNALIZATION
SAFE COMPANY

2. HEALTH SIGNS
Concept: A fast and comprehensible way of drawing the employee´s
attention to objects, activities or situations that entail certain dangers.
- No single universally accepted system of workplace safety signs
and labels, Main systems: the ISO, ANSI and EU systems.
- Not valid for traffic.
- Characteristics: Easy to understand and recognizable. Unequivocal
to avoid confusion.

3. HEALTH SIGNS II
Conditions of Use:
- Clearly visible and installed at a suitable height. (dark place:
fluorescent colors, reflective materials or artificial lighting.)
- Where and when a genuine danger exists.
- Backed up by adequate information, supervision, training and safe
systems of work.
Types of Signs: there are different types of signs and signals. All have
their specific form, pictograms and colours.

4. SIGNS FOR GAS CYLINDERS
Gas Cylinders: Equipped with statutory color coding and labels to
aware the user of the possible risks.
• Color Codes: Different countries have different gas color codes (not
rely only on the color of a cylinder to indicate what it contains). Near
universal color code.
• The label should always be checked. Contains detailed information
on the actual contents of the gas cylinder.
Label: only legally binding reference!

5. TYPES OF SIGNS
• Prohibition Signs: indicate that certain actions are prohibited.
• Mandatory signs: communicate an obligation, usually relate to the
wearing of PPE
• Warning signs: provide information about the risks encountered.
• Safety provision signs: availability of equipment or locations for
safety
• Fire fighting equipment signs: availability of equipment or locations
related to fire