CO2 fire extinguishing

The banning of halons has revitalised the use of carbon dioxide extinguishing systems. CO2 fire-extinguishing systems are considered clean agent systems because their use ensures quick and clean extinguishing, without releasing any residue into the area where the agent is dispensed and allowing rapid resumption of activities after use.

The extinguishing action of CO2 is based on reducing the concentration of oxygen in the air to a level at which combustion cannot be sustained; the simultaneous cooling caused is a secondary effect in extinguishing fires.

The restriction on their use is due to the hazardous nature of CO2 which, by lowering the concentration of oxygen, makes the air unbreathable and can, therefore, be dangerous for human beings: at the national level, the adoption of these systems is essentially limited to environments that are not normally occupied by people.

Carbon dioxide is stored in cylinders and/or tanks in liquid form and is then dispensed into the environment through special nozzles in vaporised form. The systems can be completed with suitable fire detection systems, timers, and control panels for automatic operation.

In order to ensure their effectiveness, it is essential that the checks required by the standards, which detail all the activities and maintenance schedules, be performed by specialised personnel.

Faro is the right pratner!

  • Expertise: we know the standards and propose the right solution
  • Reliability: we test all the products we offer
  • Care for the environment: we know how to handle waste and have developed a system of circular economy and reuse
The FARO Team

  • Our technicians receive continuous professional training
  • Our staff are direct employees, not subcontracted
  • We are very well acquainted with multi-site industrial, logistics, and retail operations
FARO is always there

  • Technical service on call 24 hours a day, 7 days a week
  • Direct phone support provided by our operators
  • Expert advice on all regulatory updates

Maintenance phases and frequency

Phase Frequency Situation
Initial inspection - Assumption
(responsible company)
Occasional Before delivery of a new or modified system or when assuming the maintenance of a system
Continuous According to the scheduled maintenance plan dal responsabile del sistema
Routine maintenance
(responsible company)
At least every 6 months According to the scheduled maintenance plan
Extraordinary maintenance
(responsible company)
Occasional According to need for major repairs
Scheduled testing
(responsible company)
At least every 10 years According to regulatory and statutory requirements for testing

Documentation to be acquired prior to starting maintenance activities

  • User and maintenance manual;
  • As-built designs and documentation of the system;
  • Manufacturers' test procedure;
  • Test equipment;
  • Electronic instruments suitable for the tests to be performed.

Initial inspection

To be performed by the Maintenance Technician

Preliminary Inspection
  • Verification that the system corresponds to the executive plan; Installation in conformity with the standard;
  • Visual inspection of the system;
  • Checking the cylinders and related calculations.
Functional Check
  • Verification that the system logics correspond to the project requirements and the operating documents as well as the user and maintenance manual;
  • In the presence of other interconnected systems (active or passive protection or technological systems), check that the system logics are consistent with the project requirements.


To be completed by the Assigned personnel

  • Visual inspection;
  • Checking the status messages on the control unit;
  • Checking the condition of cylinders, nozzles, goosenecks, etc., at least monthly.
  • Daily, weekly, monthly depending on the type of check to be carried out and the size of the system.
Increase frequency in the case of:
  • Installations in environments with a high density of personnel;
  • Installations in environments with frequent temperature changes;
  • Installations in environments with high humidity or presence of vapours;
  • Specific requirements of the manufacturer or designer.

Periodic inspection

To be performed by the Maintenance Technician

  • Check that the initial inspection documents are on hand;
  • Check that no actions have been taken or structural changes made in the protected environment;
  • Verification of the state of the system.
Conventional systems:
100% testing of devices
Analogue Systems:
0-6 years
Over a period of 12 months a functional check must be performed on 50% of all devices in all detection zones (twice per year)
7-12 years
Over a period of 12 months a functional check must be performed on 100% of all devices (twice per year)
beyond 12 years
After 12 years the system must undergo a general review

General system check

To be performed by the Maintenance Technician

  • At least once every 12 years.
  • Verification of the availability of spare parts;
  • Verification that the system has not changed (if substantial modifications have been made, the technical documentation must be acquired in the new as-built configuration).
  • Factory overhaul;
  • Replacement with new detectors;
  • Execution of physical test.
Go To top