The application of a gas suppression system requires that the room space (including the total envelope floor void / ceiling void) are adequately sealed to contain the weight of gas within the space for the required period of time against an allowable leakage rate.
The means to test the room for ‘ tightness ‘ is by the Retrotec Room Integrity Door Fan Pressure Test means. A calibrated and certified axial flow fan is latched into rigid expandable panels that fill the opened door frame space.
By running the calibrated fan at a certain speed thus generating pressure into / from the space, and by monitoring the pressure differential within and external to the room, that flow rate is actually measured, data inputted to software together with the protected height and the weight of gas ( FM200 / FE25 / Novec 1230 or Proinert / Argonite / Inergen Inert Gas, yes inert gas is basically air, but it still has weight!) and a descending interface height hold time, or mixing concentration result is obtained.
If the room is tight enough, then a pass is achieved. If the room is too leaky, then a fail is recorded and the room requires further sealing and a retest until a pass is achieved.
PPS carry out such Room Integrity testing and can offer a remedial sealing and retesting service.
Such testing is required for new build to (a) certificate the room / system, and (b) to certify that indeed the design concentration is reached in the first instance as excessive leakage may be so great as to lose the design concentration during the release period itself.
Testing is required each year to re-certify the room and the gas suppression performance, and may be a requirement of the Clients Insurance Company to revalidate the protection provided to the space.
To book a pressure test or to discuss in more detail contact us on: 01534 608866
As part of ISO 15004, it states that an enclosure must be integrity tested annually when protected by a gaseous fire suppression system or alternatively when alterations are made to the structure of the enclosure e.g. for new cable penetrations.
The performance of any fire suppression system can only be guaranteed when serviced regularly through a professional maintenance solution. We always recommend that room integrity testing should be part of an annual service and maintenance package, to ensure that on discharge, the suppression agent achieves and maintains the correct concentration, at the appropriate height for minimum required timeframe.