Critical Danger: Compressed Oxygen Warning Sign – HS0081 (ISO 7010)

Danger: Compressed Oxygen Sign (HS0081)

The HS0081 compressed oxygen sign warns crew and visiting personnel that compressed oxygen is stored or piped through the immediate area, a gas that dramatically accelerates combustion and turns nearby materials into a serious fire risk. Depicted as the standard ISO 7010 pictogram for Danger: Compressed Oxygen, the sign gives an instant, language-independent alert wherever oxygen cylinders, manifolds, or supply lines are present. It is intended for anyone working near, transporting, or maintaining oxygen systems aboard a vessel, from deck crew and engineers to visiting contractors and surveyors.

Within Safety Sign Hub’s Hazard Signs range, HS0081 sits alongside other gas- and pressure-related warnings as a dedicated compressed oxygen sign for spaces where this specific hazard exists rather than a generic flammable-gas notice. Typical shipboard locations include gas cylinder stores, welding and hot-work bays, engine room gas lockers, medical oxygen supply rooms, and machinery spaces where oxy-fuel cutting equipment is staged or connected. Fitting the correct compressed oxygen sign at each of these points helps crew immediately distinguish oxygen hazards from inert or flammable gas hazards nearby, which matters because oxygen-enriched atmospheres behave very differently from fuel-gas leaks.

Like the rest of the Hazard Signs range, HS0081 is produced on rigid, marine-grade material with a self-adhesive backing option, giving installers a choice between bulkhead fixing and direct mounting to steel or painted surfaces. The substrate is photoluminescent and resists saltwater, UV exposure, and the humidity typical of engine rooms and open decks, so the pictogram stays legible after years of service at sea.

Why Compressed Oxygen Matters

Oxygen itself does not burn, but it dramatically lowers the ignition threshold of surrounding materials and makes fires burn faster and hotter once started. A leaking cylinder, a loose fitting, or oxygen-saturated clothing or oily rags near an ignition source can turn a minor spark into a flash fire within seconds. Because the gas is colourless and odourless, crew have no natural warning that a leak has occurred, which is exactly why a clearly marked compressed oxygen sign at storage and use points is so important.

Marking these locations also supports routine safety rounds and permit-to-work checks. When an oxygen store or hot-work area is clearly signed, officers conducting inspections can confirm at a glance that ventilation, cylinder securing, and no-smoking rules are being observed, and new crew or contractors unfamiliar with the vessel’s layout are less likely to wander into a hazardous area unaware.

Compliance and Certification

HS0081 reproduces a registered ISO 7010 safety sign, the international standard referenced by IMO shipboard safety signage guidance for consistent, symbol-based hazard communication across fleets and nationalities. SOLAS chapter II-2 requires vessels to maintain effective fire and hazard precautions, and appropriately located warning signage is a practical way of demonstrating that requirement during Port State Control inspections and classification society surveys. Full technical detail on the ISO 7010 pictogram library is available directly from the International Organization for Standardization.

Installation Recommendations

Mount the compressed oxygen sign at eye level on or immediately beside the entrance to any oxygen store, gas locker, or hot-work bay, and repeat it on cylinder manifolds or supply cabinets where crew connect or disconnect equipment. In larger compartments, add a second sign at the main access route so it is visible before personnel enter the space, and keep the area around each sign clear of obstructions such as stowed equipment or coiled hose.

• Reproduces the registered ISO 7010 pictogram for compressed oxygen hazards
• Rigid, marine-grade construction with a self-adhesive mounting option
• Photoluminescent finish resists saltwater, UV, and humidity for long service life
• Instantly distinguishes oxygen hazards from flammable or inert gas warnings nearby
• Sized and finished for gas stores, welding bays, and engine room installations

Fit HS0081 wherever compressed oxygen is stored, piped, or used aboard your vessel to keep the hazard clearly marked for crew and visitors alike. Browse the full Hazard Signs range for related warnings, or check the Fire Fighting Signs category for complementary fire safety signage.