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;
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.
Inspector Detail
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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 inspection | monthly, per SOLAS/flag requirement |
| Annual service by an approved service station | annually |
| Overhaul/hydrostatic test | commonly every 5-10 years depending on cylinder type - confirm against maker and flag requirements |
| Cartridge weight check | at each annual service |
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.
Components & Design
Component data being added…
Technical Data
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