Maintenance Routines for Essential Fire Safety Systems on Board

Proper maintenance of fire safety systems is critical to ensure their reliability during emergencies. The following routines outline the checks and procedures required for the effective functioning of each system.

Maintenance of a water mist system focuses on ensuring unobstructed nozzles and consistent operating pressure, as both are vital for effective fire suppression.

• Weekly Checks
  • Verify that the water tank level is adequate.
  • Ensure the system is set to “Auto” mode.
  • Check the air pressure in the pressure tank (if fitted).
• Monthly Checks
  • Test the automatic start-up of the pump.
  • Carry out a visual inspection of all nozzles for corrosion, damage, or blockage.
• Quarterly Checks
  • Clean all filters and strainers to maintain proper flow.
  • Test both local and remote manual release mechanisms.
• Annual Maintenance
  • Conduct a full flow test where feasible, or blow through the lines using compressed air to confirm that nozzles are clear.
  • Calibrate pressure gauges and sensors to ensure accurate readings.
  Part (b)

  Smoke Detection System

  The effectiveness of a smoke detection system depends on its sensitivity and reliability, which can be affected by dust, contamination, or ageing components.

  • Weekly Checks
    • Test at least one detector or manual call point (on a rotational basis) to confirm that the fire alarm panel activates correctly.
  • Monthly / Quarterly Checks
    • Visually inspect detectors for dust accumulation, paint, or physical damage.
    • Use test smoke (canned smoke) or a testing device to verify proper response of detectors across different zones.
  • Annual Maintenance
    • Clean all detector heads using a vacuum cleaner or specialized blower.
    • Check the backup battery condition by simulating a power failure to ensure uninterrupted system operation.
    Part (c)

    Quick Closing Valves (QCVs)

    Quick closing valves are essential for rapid isolation of fuel and oil tanks during a fire, preventing the spread or intensification of flames.

    • Monthly Checks
      • Inspect operating wires, pulleys, and pneumatic air lines (if fitted) for wear or damage.
      • Ensure there are no obstructions that could prevent the valve from closing fully.
    • Quarterly / Six-Monthly Checks
      • Test the remote operation of valves from the emergency control station.
      • These tests are often carried out before port arrival or during safety drills to confirm proper functioning of the trip mechanism.
    • Annual Maintenance
      • Lubricate all moving components, including valve spindles and pulley systems.
      • Confirm that valves can be easily reset after operation.
      Part (d)

      Fire Hydrants and Hoses

      These systems are frequently used and are therefore subject to wear and mechanical damage, requiring regular inspection and testing.

      • Monthly Checks
        • Inspect hydrants for leaks, corrosion, and proper operation of handwheels.
        • Ensure hoses are properly stowed in their designated boxes.
        • Confirm that nozzles are available and in good condition.
      • Quarterly Checks
        • Unroll hoses to inspect for cracks, dry rot, fungal growth, or other damage.
        • Check that rubber washers in couplings are intact and flexible to ensure tight connections.
      • Annual Maintenance
        • Perform a pressure test of the fire main system.
        • Conduct hydrostatic testing of hoses to verify their strength and integrity under working pressure.
        • Flush hydrants to remove sediment, rust, or debris from the pipeline.