Water Mist System (Hi-Fog) · Fixed Fire Suppression
Ultra Fog 202 Open Nozzle — Fire suppression with intelligent activation in machinery spaces and engine rooms.
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| Nozzle visual inspection | quarterly to annual per the ship's PMS |
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| Full system/discharge function test | annual, typically as a partial/test-zone discharge per maker and class |
| Pump unit test run | monthly |
| High-pressure pipe pressure test | per class survey interval, commonly around every 5 years |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Nozzle orifice condition | any visible pitting, blockage or deformation of the orifice is normally cause for replacement rather than continued service at this pressure class - confirm against Ultra Fog's maintenance manual |
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Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Fixed water mist fire suppression in machinery spaces is SOLAS Ch.II-2 equipment; class wants annual function/discharge test records, pump capacity and pressure test results, and confirmation the system remains on the approved type list for the protected space.
Estimated lifetime: Not rated in running hours; nozzles and valves are serviced on a calendar/test-cycle basis, with replacement driven by corrosion or blockage condition rather than hours run.
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