Water Networks

Fire-fighting water networks ensure the availability of an adequate supply of water, as calculated by the designer in accordance with the standard, to fight fires, always bearing in mind the risk of the activity and the potential spreading of the fire.

The presence of these water networks is one of the basic requisites of fire protection, allowing internal and external protection of activities. Even if other fire protection solutions are available, there is no reason not to install this type of system unless water is unsuitable as a fire-extinguishing agent.

They are comprised of a fixed piping system supplying a water system (fire hydrants and risers) and the connections for fire engines, and they must be designed in such a way as to guarantee the flow rate and pressure required by the system as well as having the capability of ensuring it within the timescale envisaged by the project.

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

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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 according to the indication in the maintenance plan
Routine maintenance
(responsible company) 		Every six months According to the scheduled maintenance plan
Extraordinary maintenance
(responsible company) 		Occasional According to need for major repairs/replacement
Water supply test Every six months According to regulatory requirements

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;
  • Preliminary tests on the status of the systems.

Monitoring

To be completed by the Assigned personnel

What?
  • Visual inspection;
  • Checking the status messages on the system.
When?
  • 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 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;
  • Verification of the state of the system.
How?
  • Check the presence and correct location of all the equipment (connections, above-ground risers, boxes, underground, etc.) in relation to the floor plan / emergency plan, visibility, and accessibility
  • Check that they are in good condition and that there are no signs of wear, corrosion, or any kind of leakage.
  • Ensure that the equipment is not left damaged or deteriorated.
  • Lubricate all parts where necessary and check that they are easy to handle and unscrew;
  • At the end of the operations make sure that the shut-off valves of the fire engine connections are in the open position;
  • Check that the drainage system is working properly and that adequate fittings are available.

Semi-Annual / Annual Inspection

To be performed by the Maintenance Technician

How?
  • Functional check of the system and of the pressure/flow rate measured without any equipment being used at the same time.
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