Pressure Relief Dampers

Pressure relief is required once a room is sealed to a high standard.

This protects the enclosures structural stability.

The vents remain closed during normal situations but upon a gas discharge the vent opens to relieve excess pressure, then closes again to maintain room Integrity.

The Retrotec door fan test equipment and software can be used to predict the maximum expected pressure in the room during agent discharge and calculate the amount of venting required.

If pressure-relief vents are installed in the enclosure, the door fan test equipment can be used to pressurize the enclosure and test correct design and functioning of the vents.

Pressure relief vents rarely open at the prescribed pressures and if they do, rarely open fully as required.

Gas Extract:

A gas extract system should be installed to extract any gas in the event of a discharge.

Most clean air suppressant agents are heavier than air (except Nitrogen)and will eventually settle in the floor void after release.

An extract system will pick this up at low level and ducted out to atmosphere.