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Your safety, our care!
Fixed CO2 Extinguishing System
Protecting your on board equipmentFixed carbon dioxide extinguishing systems are highly valued for their specific features. CO2 fire suppression results in minimal damage. Furthermore, CO2 does not conduct electricity thus leading to a widespread use in on board spaces filled with sensitive and valuable electronic equipment and machinery. Ajax-Chubb has long term experience and extensive knowledge concerning fire protection on board as well as on shore. You can trust us to protect your marine assets.
The extensive use of fixed CO2 extinguishing systemsFixed CO2 extinguishing systems are used in many on board rooms, such as engine and pump rooms, separator rooms, cargo holds, diesel generator rooms and rooms containing electrical and electronic equipment. Ajax-Chubb supplies and installs CO2 extinguishing systems in accordance to current standards and guidelines, from IMO/Solas Consolidated Edition 2004, several shipping classification agencies and other authorities having jurisdiction.
Carbon dioxide has significant benefitsCarbon dioxide is a colourless, odourless gas that does not conduct electricity. The density is about one and a half times that of air. It is stored in steel cylinders, and condensed to a liquid by its own vapour pressure.
Benefits
100% natural gas•Does not leave a residue•Zero ozone depletion potential•USCG and other approvals•Environmentally friendly•
How does a fixed CO2 extinguishing system work?The extinguishing method of CO2 gas is based on the reduction of the oxygen level in air to a certain level of CO2 concentration. Combustion cannot be sustained in an atmosphere containing a minimum of 34% of CO2. Higher CO2 concentrations are required to deal with certain situations such as deep-seated fires and fires involving the presence of hot surfaces that could lead to re-ignition. The cooling effect of CO2 is of minor importance.
When the installation is activated, the liquefied CO2 flows from the cylinders through the distribution pipes to the nozzles under the influence of its own vapour pressure. The installation can be used to protect a number of different areas or objects by direction valves in the piping. The CO2 is sprayed into the area where a fire has been detected as a gas, penetrating quickly and evenly into all parts of the area and providing overall protection.
Your safety, our care!2
Effective smoke detectionThe smoke detection system SDS-48 is used for continual smoke monitoring in cargo holds (maximum of 48 zones). For this a network of pipes simultaneously draws air samples from all cargo areas, which are then fed to the smoke detection panel. In most cases the pipes for the CO2 fire extinguishing system are used for this. The fire extinguishing equipment and the smoke detection system can both be connected to the same network by means of 3-way valves.
For remote display of smoke alarms and fault warnings, a repeater panel is installed on the bridge and is connected to the smoke detection panel in the CO2 room via a 4-wire cable (RS-485 bus cable).
The system in its layout complies with the requirements of SOLAS chapter II-2, regulation 13-1 (sample extraction smoke detection systems). The system is designed to safeguard against explosion according to IEC 79 and EN 50 020.
Warning system and safety facilitiesAt the concentration required to extinguish fires, carbon dioxide has an asphyxiating effect which makes it lethal for humans. It is therefore necessary to install warning systems and provide safety facilities to protect any persons who may be working in an area containing a fixed CO2 extinguishing system. The warning system is activated before the fixed CO2 extinguishing system is activated. Acoustic signals warn personnel present in the area in question that carbon dioxide is going to be released, and that they should leave the area as quickly as possible. At the same time as the fixed CO2 extinguishing system is activated, ventilation facilities are switched off, as well as electrical equipment and fuel supply.
Areas which can be protected by Ajax Marine CO2 systems:
Engine rooms•Machinery spaces•Pump rooms•Bow Thruster compartments•Cargo holds•Lamp rooms•Galleys and ducting•Engine scavange spaces•
Your safety, our care!3
Extinguishing systems
Portables
Wheeled extinguishers
Fire-fighting monitors
Fire detection, -alarm systems
Cargo hold detection
Service and Maintenance
Engineering and Consultancy
All other safety appliances
Ajax Chubb VarelMarine & Offshore Department
T : +31 (0)180 - 555 222
I : www.ajaxchubbvarel.nl
Head office
Cruquiusweg 118
1019 AK Amsterdam
P.O. Box 94404
1090 GK Amsterdam
T.: +31 (0) 20 - 5909 500
F.: +31 (0) 20 - 5909 599
www.ajaxchubbvarel.nl
Marine & Offshore Department
Achterzeedijk 57, unit 57
2992 SB Barendrecht
P.O. Box 355
2990 AJ Barendrecht
Tel.: +31 (0) 180 - 555 222 (24hr)
Fax: +31 (0) 180 - 555 233
e-mail: [email protected]
www.ajaxchubbvarel.nl
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