Non-Ionizing Radiation Sign

Non-Ionizing Radiation Sign – ISO 7010 Warning Symbol HS0012

This Non-Ionizing Radiation sign warns crew and visitors that radio-frequency or microwave energy sources, such as radar scanners or communications antennas, are active in the marked area. It follows the internationally recognised ISO 7010 warning pictogram format, showing an antenna radiating signal waves on the standard photoluminescent yellow triangle so the hazard reads instantly regardless of the reader’s first language.

As SKU HS0012 in the Hazard Signs range, it is built for continuous marine exposure and suits radar masts, satellite communication domes, radio rooms and any deck area swept by non-ionizing radiation during transmission.

The pictogram shows a transmitting antenna with curved radiating lines fanning outward, rendered in black inside the warning triangle, a graphic used consistently across shipping and telecommunications to flag radio-frequency exposure zones.

Because non-ionizing radiation cannot be seen, heard or felt at the exposure levels that still carry health risk, the sign functions as the primary warning that a transmitting antenna or radar scanner is live, particularly important on masts and open decks where a crew member might otherwise linger near an active dish or scanner during maintenance, cleaning or painting work that has not been properly coordinated with the bridge. The photoluminescent base keeps the non-ionizing radiation warning visible for a period after lighting fails, useful given how often mast access occurs during low-light watches.

Why Non-Ionizing Radiation Marking Matters

Repeated or close-range exposure to non-ionizing radiation from radar and communications equipment can cause tissue heating and other health effects, so clear signage at transmitting equipment is essential before anyone works aloft near a mast or dome.

Standardised non-ionizing radiation signage supports the vessel’s radio and radar safety procedures by marking exclusion zones during transmission, and it gives riggers, radio officers and deck crew an immediate visual cue to confirm equipment is isolated before approaching. It also protects visiting technicians and surveyors who may be unfamiliar with which antennas are active at any given time.

Compliance and Certification

This sign is produced to align with IMO shipboard safety signage guidance and the ISO 7010 graphical symbol set referenced in radio and radar safety practice aboard vessels, supporting the hazard communication expectations of the ISM Code around transmitting equipment. A visible non-ionizing radiation warning at radar masts and communication domes is a documented control that flag-state inspectors and classification surveyors look for when reviewing a vessel’s radio safety procedures and permit-to-work arrangements for mast access.

Installation Recommendations

Mount the sign at the base of radar masts, adjacent to satellite domes, and at radio room entrances, positioned so it is seen before anyone climbs or approaches transmitting equipment. Use the pre-drilled fixing holes with marine-grade fasteners for mast and exterior deck applications exposed to constant weather and vibration, and the self-adhesive backing for radio room doors and interior equipment housings.

Reconfirm sign placement whenever antennas or radar equipment are relocated so the non-ionizing radiation warning always matches the current transmission zone, and confirm with the radio officer which antennas are live before scheduling any work near a marked mast section.

• 425 x 425mm rigid or self-adhesive format for steel, aluminium or GRP surfaces
• Photoluminescent base for visibility during power loss or blackout drills
• UV-stable, saltwater-resistant construction for long-term exterior mast exposure
• Self-adhesive or pre-drilled fixing options for fast, secure installation
• ISO 7010 compliant antenna pictogram, language-independent and instantly recognisable

Order the HS0012 Non-Ionizing Radiation sign today to mark radar and communications equipment before your next mast access or radio safety audit. Safety Sign Hub stocks the complete IMPA/ISSA-coded hazard sign range and ships marine-grade signage across Australia and to vessels in port, with bulk pricing for fleet orders.

See the full Hazard Signs range for related ISO 7010 warning pictograms, or browse our Fire Fighting Signs for IMO A.654(16) fire control signage to complete your vessel’s safety signage plan.