Space Protected by Water Mist Sign

Space Protected by Water Mist Sign – IMO A.654(16) Fire Control Symbol FS0254

This Space Protected by Water Mist sign identifies a compartment covered by a fixed water mist fire-extinguishing system, shown by the standardised mist-spray pictogram with “WM” designator, matching exactly what appears on the vessel’s fire control plan for this location. As SKU FS0254 in the Fire Fighting Signs range, it is designed for permanent fixing at the entrance to machinery spaces, accommodation areas or special category spaces protected by a fixed water mist installation.

Fixed water mist systems protect entire compartments by discharging a fine mist that cools and displaces oxygen from the fire, which makes clear compartment identification important so crew and firefighting teams know instantly which spaces are covered by automatic protection. Clear signage also supports routine fire equipment rounds, where crew confirm detection heads, nozzles and control valves for the protected space are correctly configured. The photoluminescent background of this sign keeps the notice legible during a blackout, exactly when confirming which systems are protecting which spaces becomes part of the crew’s firefighting preparation.

Why Space Protected by Water Mist Identification Matters

Crew responsible for fire system maintenance need to identify every space under water mist protection quickly for scheduled system tests and detector checks, since confirming full coverage is part of validating the vessel’s overall fire protection arrangement. Correctly signed spaces also support fire drills and system familiarisation, helping the fire team understand which compartments will trigger automatic mist discharge on detection. This distinction matters particularly on vessels with multiple fixed systems protecting different spaces, where confirming coverage boundaries supports confident, informed firefighting decisions.

Compliance and Certification

This sign reproduces the fire control symbol set derived from IMO Resolution A.654(16) and continued under the current ISO 17631 standard for fire control plan graphics, matching what flag-state surveyors and classification societies expect to see identifying spaces under fixed water mist protection. SOLAS Chapter II-2 sets requirements for fixed fire-extinguishing systems and the spaces they protect, and correctly labelled compartments are part of demonstrating that this system is genuinely maintained and ready during Port State Control inspections and class surveys. Fitting SKU FS0254 keeps your compartment signage matched to the fire control plan surveyors will reference.

Installation Recommendations

Fix this sign at the entrance to the protected space, using the pre-drilled fixing holes for a permanent mechanical fixing or the self-adhesive backing on smooth painted surfaces. In machinery spaces exposed to vibration, heat and oily residue, a screw or rivet fixing will outperform adhesive over the vessel’s operating life, and the sign should remain visible even when doors are propped open during work. Check the sign periodically during routine fire equipment rounds to confirm it remains legible and correctly positioned at the compartment entrance.

• Standard IMO/ISO 17631 fire control symbol – water mist “WM” spray pictogram
• Photoluminescent base for visibility during blackout or power failure
• 150x150mm rigid or self-adhesive format to suit steel, aluminium or GRP surfaces
• UV-stable, corrosion-resistant construction for machinery space and accommodation use
• Matches fire control plan symbols exactly for fast, confident compartment identification

Order the FS0254 Space Protected by Water Mist sign to keep your vessel’s fixed fire protection coverage clearly identified before your next drill or inspection. Safety Sign Hub stocks the complete IMO fire control symbol range and ships marine-grade signage across Australia and to vessels in port.

Browse the full Fire Fighting Signs range for every fire control plan symbol your vessel needs, or see our Hazard Signs for ISO 7010 warning pictograms to complete your safety signage programme.