Statutory Overview: SOLAS, FSS Code Chapter 7 & IMO MSC/Circ.1165 Compliance
Marine fixed water mist fire-fighting systems provide critical local application and total flooding protection for machinery spaces of Category A, cargo pump rooms, accommodation spaces, and high-risk engine hazards without the personnel evacuation hazards associated with high-pressure CO2 release. Seanav Marine delivers turnkey Marine Water Mist Fire-Fighting Solutions—encompassing Class-certified equipment supply, statutory annual and 5-year survey inspections, high-pressure pump overhauls, nozzle flow testing, and emergency breakdown repairs across all UAE ports (Dubai, Jebel Ali, Abu Dhabi, Fujairah) and regional shipyards.
nn
Core Water Mist System Engineering & Service Scopes
Our certified marine safety engineers provide end-to-end lifecycle servicing for high-pressure (80 to 140 bar) and low-pressure (6 to 16 bar) marine water mist fire extinguishing systems under major IACS Class approvals (DNV, ABS, Lloyd’s Register, Bureau Veritas, ClassNK, RINA, IRS).
nn
1. Statutory Annual & 5-Year Class Inspection
Full operational verification of automatic release controls, fire detection cross-zoning, manual release pull-boxes, section control valves, pressure relief valves, water reservoir level alarms, and nitrogen propellant cylinder integrity per IMO MSC/Circ.1165 & MSC.1/Circ.1432.
2. High-Pressure Pump Unit Overhaul & Testing
Precision overhaul of multi-stage centrifugal and positive displacement plunger pumps (Danfoss, Marioff Hi-FOG, SEM-SAFE, FOGTEC). Valve plate resurfacing, ceramic plunger seal replacement, unloader valve calibration, and dynamic flow discharge testing.
3. Nozzle Cleaning, Flow Testing & Spray Pattern Audit
Ultrasonic cleaning of micro-orifice spray heads, strainer mesh descaling, droplet distribution verification, and pressure drop analysis across main engine top, boiler fronts, purifiers, and incinerator skids.
4. Turnkey Marine Equipment & Spares Supply
Rapid procurement and bonded delivery of type-approved stainless steel 316L nozzles, section solenoid valves, pressure switches, nitrogen booster bottles, water mist portable extinguishers, and high-pressure flexible hoses directly to vessel berths or outer anchorages.
nn
High-Pressure vs. Low-Pressure Water Mist System Technical Comparison
| System Parameter | High-Pressure Water Mist (HP) | Low-Pressure Water Mist (LP) |
|---|---|---|
| Operating Pressure Range | 80 bar to 140 bar (1,160 – 2,030 psi) | 6 bar to 16 bar (87 – 232 psi) |
| Droplet Size (Dv90) | < 50 μm (Rapid phase change & latent heat absorption) | 100 μm to 250 μm (Direct fuel surface cooling & wetting) |
| Typical Machinery Applications | Main Engine cylinders/crankcases, Turbochargers, Purifier rooms | Accommodation corridors, Public spaces, Ro-Ro vehicle decks |
| Leading Supported Manufacturers | Marioff Hi-FOG, Danfoss Semco, SEM-SAFE, FOGTEC, Kidde | Minimax Minifog Marine, Survitec Novenco, Tyco AquaMist |
nn
Frequently Asked Questions on Marine Water Mist Systems
What are the statutory Class inspection intervals for marine local-application water mist?
Per IMO MSC.1/Circ.1432, systems require quarterly operational verification, annual full testing of auto/manual starting and alarms, and a comprehensive 5-year overhaul including internal inspection of control valves, relief valves, and pressure vessels.
Can water mist nozzles be cleaned onboard or do they require replacement?
Micro-orifice nozzles obstructed by scale or salt deposition can often be reconditioned using specialized ultrasonic acid-bath cleaning and pressure flow rate verification. Corroded or deformed nozzles must be renewed with OEM type-approved units.
How quickly can Seanav Marine attend a water mist emergency in UAE ports?
Our marine safety flying squads are stationed in Dubai and Fujairah, offering 2 to 4 hour boarding attendance at Jebel Ali, Port Rashid, Mina Khalifa, and Fujairah Anchorage to rectify PSC deficiencies before departure.
nn
Schedule Water Mist System Inspection or Spares Dispatch
Contact our 24/7 Marine Safety & FFA Engineering Desk for annual survey coordination, pump repairs, and certified spares delivery across all UAE ports and anchorages.
n