Explosive Gases Warning Sign – ISO 7010 Shipboard Safety Sign (HS0058)

Explosive Gases Warning Sign HS0058

The HS0058 explosive gases warning sign alerts crew and visiting personnel to spaces where flammable or explosive gases may accumulate, such as battery charging rooms, gas cylinder stores, or compartments adjoining fuel systems. It depicts the standard ISO 7010 pictogram for Explosive Gases, instantly recognisable across vessels regardless of the reader’s first language. Placed at entry points and bulkheads, this explosive gases warning sign gives an immediate, unambiguous cue to eliminate ignition sources, ventilate the space, and follow permit-to-work procedures before entering.

Within Safety Sign Hub’s Hazard Signs range, HS0058 sits alongside other atmospheric and process hazard warnings used throughout engine rooms, battery lockers, paint stores, and tank spaces. Shipboard risk assessments routinely identify areas where hydrogen from charging batteries, vapours from solvent stores, or residual cargo gases can reach explosive concentrations, and this sign flags those zones to anyone approaching. It is commonly fitted outside battery rooms, near gas bottle stowage, at the entrance to pump rooms, and on bulkheads adjacent to fuel tank vents.

Like the rest of the Hazard Signs catalogue, HS0058 is produced on rigid, marine-grade substrate with a self-adhesive backing option, and is available in photoluminescent material for visibility during power loss or low-light conditions. The print is formulated to resist saltwater spray, UV exposure, and the humidity typical of engine spaces and enclosed compartments, so the sign remains legible for the working life of the vessel.

Why Explosive Gases Matter

An unmarked space containing explosive gases is one of the most serious hazards aboard any vessel. A single spark from a switch, a dropped tool, or static discharge can ignite an accumulated gas-air mixture, with consequences ranging from flash fire to a hull-breaching explosion. Crew unfamiliar with a space’s hazard profile are especially at risk, and this is precisely the failure this explosive gases warning sign is designed to prevent by making the danger visible before anyone crosses the threshold.

Consistent signage also supports safety rounds, permit-to-work systems, and toolbox talks, giving officers a fixed reference point during drills and inspections. When every explosive gases warning sign on board is identical and correctly located, crew build reliable habits around ventilation checks and hot-work restrictions, reducing the chance that a hazard is overlooked during busy operations or watch handovers.

Compliance and Certification

HS0058 reproduces a pictogram from the ISO 7010 register of graphical symbols for safety signs, ensuring the design matches the internationally recognised standard rather than a house-style variant. IMO guidance on shipboard safety signage and SOLAS’s general requirement that hazards be clearly identified both support the use of standardised, durable warning signs in spaces where explosive gases may be present. Classification society surveyors and Port State Control inspectors routinely check that hazard signage is present, legible, and correctly sited during safety inspections, and a compliant explosive gases warning sign helps a vessel demonstrate that its hazard identification is current and consistent with recognised practice.

Installation Recommendations

Mount HS0058 at eye level on the door or bulkhead immediately outside the hazardous space, and repeat it at any secondary access point so the warning cannot be missed. In battery rooms and gas cylinder stores, position the sign where it is visible before the door is opened, and pair it with ventilation or “no naked flames” signage where local procedures require. Clean the surface before applying an adhesive sign, and use mechanical fixings in areas subject to heavy vibration or wash-down.

• Reproduces the registered ISO 7010 pictogram for Explosive Gases
• Rigid marine-grade or self-adhesive construction to suit the mounting surface
• Photoluminescent option maintains visibility during power failure
• UV- and saltwater-resistant print for long-term legibility outdoors and below deck
• Sized and formatted for battery rooms, gas stores, and fuel-adjacent compartments

Fit HS0058 wherever explosive gases may accumulate and complete your scheme with the wider Hazard Signs range, or check the Fire Fighting Signs collection for nearby equipment marking.