Pre Action Systems as Safer Option to Combat Fires
Since fires can result to unimaginable damage to property, alarm systems are being used to prevent the spread of fire throughout the facility. However, the improper use of such alarm systems can also cause damage to areas which include bookshops, control centres, data processing centres, refrigeration rooms, and archives of valuable documents.
What are Pre Action Systems?
The accidental activation of the system can also be a cause for concern for data facilities. Therefore, it is crucial to install pre action systems because it can prevent flooding due to accidental breaks.
Single Interblock Device – Pre action systems using single interblock devices require a detection device before the water will reach the distribution tubes and sprinklers. This particular system should prevent flooding as a result to accidental breaks. Double Interblock Device – In this setup, the detector device and sprinkler should crash before water will reach the distribution system. In this scheme, higher protection will be guaranteed against the damage caused by any accidental discharges.
Pre action systems are closed sprinkler systems that can charge on air. These can be linked to the fire alarm in which case the systems will be able to fill the activation of either the heat detectors (double knock) and the smoke detectors (single knock) or any similar fire detection appliances. So after the system receives the signal, it will be filled with water and only when there is a fill being detected by the sprinkler head that the system activates.
Suitable For Water Sensitive Environments
The use of pre action sprinkler systems would have an impact to the facility with highly sensitive equipment or materials. This is because this particular system will hold back the water via an electrically operated valve, namely the pre action valve.
Therefore, in the event of accidental activation, water will not flow directly into the system unless the supplemental fire detection system will begin to operate. This will now signal the pre action valve to open.
Basically, the system will be able to allow the assessment of incipient fire before water will be released. This will also save valuable assets because it will wait until the assessment has been made.
A Safer Option
In contrast to gas suppression systems, pre action systems are more environmentally safe to use. The typical areas of use for these systems include the following:
Control rooms and telecommunication facilities
Data and Computer Suites
Shops and archives
Medical and Laboratory equipment
Pre action systems also work via smoke detectors within the facility with the use of double knock arrangement.