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Library› Safety & LSA› Fire Fighting› CO₂ Fixed System (Engine Room + Cargo)› Zhejiang Winner MFZL6-4 - 6kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 34A, 183B; MFZL9-2 - 9kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 43A, 183B; MFZL12-2 - 12kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 55A, 233B
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Zhejiang Winner

MFZL6-4 - 6kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 34A, 183B; MFZL9-2 - 9kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 43A, 183B; MFZL12-2 - 12kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 55A, 233B

CO₂ Fixed System (Engine Room + Cargo) · Fire Fighting

Class-certified type (DNV register) · technical data sheet not yet verified​​⁠⁠‌⁠‌⁠‍⁠​​‌​‍​‍​‍​
Example image: CO₂ Fixed System (Engine Room + Cargo) — not a photo of this model.

MFZL6-4 - 6kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 34A, 183B; MFZL9-2 - 9kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 43A, 183B; MFZL12-2 - 12kg ABC 40% Dry Powder Fire Extinguishers with internal CO2 Gas Cartridge, Fire Rating 55A, 233B;. Category: Portable fire extinguishers. Module: B. Manufacturer: Zhejiang Winner.

Inspection

Inspector Detail

Common issues

  • Under- or over-pressurisation from an incorrect or corroded CO2 cartridge
  • Powder caking or compaction from moisture ingress, reducing discharge performance
  • Nozzle/hose blockage from caked powder residue
  • External corrosion of the steel body affecting the hydrostatic test result
  • Seal/O-ring degradation causing slow pressure loss or a failed cartridge seal
  • Missing or expired service tag making status unverifiable at survey

Inspection checklist

  • Visual monthly check of body, hose, nozzle and cartridge/pressure indicator
  • Check gross weight and cartridge weight against the nameplate
  • Check for powder caking where the maker's instructions permit an invert/shake check
  • Confirm the service tag is current for annual service and periodic overhaul
  • Check mounting bracket, location and fire-class signage match the vessel's fire control plan
  • Check the body for corrosion, dents or damage

Service intervals

Visual monthly inspectionmonthly, per SOLAS/flag requirement
Annual service by an approved service stationannually
Overhaul/hydrostatic testcommonly every 5-10 years depending on cylinder type - confirm against maker and flag requirements
Cartridge weight checkat each annual service

Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.

Critical spares

  • Replacement CO2 gas cartridge, correct type/weight
  • Dry powder (ABC 40%) refill charge
  • Hose and nozzle/discharge assembly
  • Body O-ring/seal kit
  • Service/inspection tag

Safety

  • The pressurised cartridge should only be serviced by trained personnel - risk of sudden discharge
  • Powder inhalation/eye irritation on discharge in confined spaces - ventilate after use
  • ABC-rated units only - confirm suitability before use on a given fire type
  • Cylinders must pass the current hydrostatic/overhaul test - do not keep an out-of-date unit in service

Class survey

Catalogue mismatch: this entry is filed under 'CO2 Fixed System (Engine Room + Cargo)', but the manufacturer's description and the UK MCA/BSI approval (BSI/UK/3.2/654044) identify portable cartridge-operated dry powder extinguishers (MFZL6-4, MFZL9-2, MFZL12-2), not a fixed total-flooding CO2 system - the notes above concern the portable extinguishers only. typical_wear_limits and estimated_lifetime_hours are not meaningful for a portable extinguisher and have been omitted. Verify separately against the vessel's fire control plan whether an actual fixed CO2 system exists in the engine room/cargo spaces - that is a materially different piece of equipment with its own survey regime (cylinder weighing, release piping, discharge alarm testing) that this record does not cover.

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