Foam

Foam fire-extinguishing systems operate similarly to deluge systems (sprinkler), but differ in that they use a solution of water and foaming agent that expands on contact with air.

Foam is one of the most widely used fire-extinguishing agents in industrial installations for extinguishing liquid and solid combustibles.

Its widespread use is due to its low cost, ready availability, ease of use, and the fact that it is not harmful to humans. Moreover, it does not damage materials and is easily removed from the area where it is applied.

Foam systems are classified as:

  • Low-expansion foam fire-extinguishing systems (0-20 litres);
  • Medium-expansion foam fire-extinguishing systems (20-200 litres);
  • High-expansion foam fire-extinguishing systems (200-1000 litres).

Low- and medium-expansion foam can be obtained using both fixed and mobile equipment.

High-expansion foam, when operating at the saturation point, can only be delivered by means of stationary foam generators.

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

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  • 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
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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
Monitoring
(internal) 		Continuous According to the scheduled maintenance plan dal responsabile del sistema e come indicato dal produttore
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
Chemical analyses
(responsible company) 		Annual According to regulatory requirements and with specific analysis at an authorised laboratory.
N.B.: In accordance with the manufacturer's instructions, it is advisable to check the pre-mixer's membrane every 5 years.

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.

Initial inspection

To be performed by the Maintenance Technician

Preliminary Inspection
  • Verification that the system corresponds to the executive plan;
  • Visual inspection of the system.
Functional Check
  • Verification that the system logics correspond to the project requirements with verification of the detailed list of system components;
  • Testing of the real effectiveness of the pumping stations with determination of the pump curve;
  • Check that the control valve gasket kit has effectively been replaced, and that the foamers and membranes have been analysed.

Monitoring

To be completed by the Assigned personnel

What?
  • Visual inspection;
  • Checking the status messages on the system.
When?
  • 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 high-risk environments;
  • Installations in environments with particularly adverse weather conditions;
  • Specific requirements of the manufacturer or designer.

Periodic inspection

To be performed by the Maintenance Technician

What?
  • Check that the initial inspection documents are on hand;
  • Check that no actions have been taken or structural changes made in the protected environment.
How?
  • The semi-annual periodic inspection must be performed by a Specialised Company that must check the foam fire-extinguishing system on the basis of the maintenance operations envisaged for the various types of systems, as per the minimum indications contained in standard UNI EN 13565-2:2009, using specific instruments, suitable manuals, design drawings, wiring diagrams, and operating logics provided by the User;
  • The Specialised Company shall also check that the auxiliary features are in good working order.
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