Radioactive III Diamond - Safety Signs by Caledonia Signs

The Radioactive III Diamond GHS sign is used to identify packages or areas containing high-level radioactive materials that emit higher radiation levels compared to Categories I and II. This label, known as Category III – Yellow III, signals a significant radiation hazard requiring strict controls during handling, transport, and storage.

This sign should be displayed on transport containers, storage units, and restricted zones in facilities such as nuclear power plants, radiopharmaceutical manufacturing, research laboratories, and industrial sites that work with or store highly radioactive substances. It is also crucial during the transportation of radioactive materials via road, rail, or air.

The primary purpose of this sign is to warn workers, emergency responders, and the public about the presence of dangerous radiation levels, prompting the use of specialised protective equipment, controlled access, and adherence to strict safety protocols. It ensures that all involved understand the risks and take necessary precautions to prevent radiation exposure.

Using the Radioactive III Diamond GHS sign supports regulatory compliance, safeguards human health, and prevents contamination or accidental exposure. Its clear, standardised warning helps maintain a safe environment when dealing with highly radioactive materials.

UN regulations (including ADR, IATA and IMDG) stipulate that all dangerous goods must be clearly identified.

Materials Explained

Below is a more detailed description of the materials this particular safety sign is available in. Helping you decide which sign option is most suitable for your application.

Rigid Plastic: This lightweight, gloss white PVC is resistant to weather, moisture, chemicals, and general wear and tear, making it suitable for harsh environments. Its smooth, solid surface allows for crisp printing of text and graphics, enhancing readability and visual impact. Businesses who choose Rigid Plastic signs benefit from fewer replacements and minimal maintenance, making it a practical investment for reliable and effective safety signs.

Self-Adhesive Vinyl: Self-adhesive vinyl is easy to apply and it’s budget-friendly. Its adhesive backing allows for easy application to a variety of surfaces such as glass, metal, plastic, and painted walls, which simplifies installation and reduces setup time. Self-adhesive vinyl provides a clean, professional finish that suits many indoor environments including offices, retail, industrial sites, and vehicles. It is more affordable than many other material types and allows for custom shapes, colours, and graphics.