THE CARBON DIOXIDE FIRE EXTINGUISHING SYSTEM
The CARBON DIOXIDE (CO2) system is the most vital part of the vessel and can be assimilated to the heart of the latter as it will control all the parts that can be endangered.
Carbon dioxide as extinguishing agent
MARICHEM MARIGASES Worldwide Services FIRE, RESCUE & SAFETY SERVICES are approved by Classification Societies such as:
1. Carbon dioxide gas is stable and does not wield influence on oil, metal or electric insulator.
2. Since no pollution is caused at the fire fighting, the equipment, which is not damaged by the fire, can resume the operation immediately after the fire is put off.
3. As carbon dioxide has higher electric insulation property than air, it can be safely used to the electric equipment.
4. Since it can penetrate to any gap, the fire is extinguished completely no matter what complicated form the burning object may have.
5. The quality is not deteriorated if stored over a long period.
Since a large amount of oil is found in the engine room, boiler room, pump room, e.t.c. the fire may be spread rapidly. In the case of the engine room, therefore, it is necessary that 85% of required amount of carbon dioxide is discharged within 2 minutes for the prompt fire extinguishments.
The fire extinguishing system in the room consists of discharge nozzles, the carbon dioxide gas cylinders and the large type selection valve, the latter two being connected with the fixed piping for pressure use.
Maintenance and inspection
The daily maintenance and inspection work are quite important, if the performance of this unit, which is rarely used is to be exploited fully at the fire fighting time.
1. Arbitrary inspection
Visual inspection and checking for the deformation or damage of the tube, pipe, valve, electric wire or other accessories. These have to be kept in well–maintained status.
2. Half–yearly inspection
Inspection on the sounding of audible alarms such as sirens, bells, etc. Also checking and inspection of the electric safety circuits like the emergency stop of the ventilating device.
3. Yearly inspection
Weighting of the carbon dioxide cylinder and inspection of the filled gas amount. If the filled amount is reduced by more than 10%, it has to be refilled.
4. Two year inspection
Blow-through the lines of carbon dioxide or compressed air to the respective pipe system and checking for the pipe clogging, leakage or other abnormality.
5. Record after inspection
Records of the results must be kept in a record form, certificates.