Work in Progress on Radar Sign

Work In Progress On Radar Sign – ISO 7010 Warning Symbol HS0036

This Work In Progress On Radar sign warns crew and visitors that maintenance, testing or repair work is currently underway on a radar scanner or antenna, meaning the equipment may be exposed, partially disassembled or unexpectedly energised.

This sign combines the standard black exclamation triangle with a bold “DANGER – Work in progress on radar” text panel beneath it, pairing the instant visual cue with an explicit written instruction. As SKU HS0036 in the Hazard Signs range, it is built for continuous marine exposure and suits radar masts, communication platforms and any location where technicians are actively working on transmitting or rotating equipment.

The upper section shows the familiar black exclamation mark inside a warning triangle, while the lower panel spells out “DANGER” in bold capitals followed by “Work in progress on radar” in smaller text, a combined pictogram-and-wording format that communicates a specific, temporary situation more precisely than a generic caution symbol alone.

Because work in progress on radar can involve a scanner that is normally rotating being temporarily stationary, or transmitting equipment being tested with covers removed, the explicit wording helps prevent someone assuming the equipment is either safely off or safely operating as normal. The photoluminescent base keeps this warning visible for a period after lighting fails, useful during maintenance periods that run into low-light hours on exposed mast platforms.

Why Work In Progress On Radar Marking Matters

A radar scanner that starts rotating unexpectedly, or transmitting equipment that is reactivated while a technician is still working on it, can cause serious injury, so clear temporary signage during maintenance is an essential control alongside proper isolation procedures.

Standardised work in progress on radar signage tells other crew and visiting personnel that normal assumptions about the equipment’s state do not currently apply, reinforcing the need to check with the responsible technician before approaching or attempting to restore power. It also protects the technician performing the work by reducing the chance that someone else reactivates the equipment without knowing work is underway.

Compliance and Certification

This sign is produced to align with IMO shipboard safety signage guidance and the combined pictogram-and-text warning format used for temporary maintenance conditions on navigation and communication equipment, supporting the ISM Code’s requirement for documented control of work-in-progress hazards. A visible work in progress on radar warning during mast maintenance is a documented control that internal safety auditors and classification surveyors look for when reviewing permit-to-work arrangements for navigation equipment.

Installation Recommendations

Fit the sign at the base of the radar mast or at the entrance to the platform being worked on as soon as maintenance begins, using the self-adhesive backing for quick, temporary placement that can be removed cleanly once work is complete. For longer maintenance periods, the pre-drilled fixing holes with marine-grade fasteners provide a more secure fit on exterior mast structures. Remove the sign promptly once work is finished and the equipment has been confirmed safe to return to normal operation, keeping spare signs on hand for the next maintenance period.

• 425 x 567mm 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 and temporary installation
• Combined pictogram and bold English text for added clarity beyond the symbol alone

Order the HS0036 Work In Progress On Radar sign today to keep every mast maintenance job clearly marked. 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.