Fire Enclosure Testing
Enclosures protected by gaseous fire suppression system – such as server rooms should be tested for air-tightness upon commissioning of the system and annually thereafter. This is critical to ensure that the system will work effectively when activated; too much air-leakage will result in the concentration of the fire suppressant agent falling too quickly resulting in rapid fire spread.
Air Pressure Testing provides the necessary Room Integrity Testing to the required NFPA 2001 or ISO 14520 methodologies. We have undertaken thousands of enclosure integrity tests around the UK and Europe.
We can also arrange an annual test plan and remind you when the fire enclosure test is required to make sure your buildings insurance is not at risk.
Smoke Testing and Remedial Works
The majority of enclosure test failures are caused by the lack of enclosure integrity or the ability of the enclosure to adequately retain the extinguishant. The correct initial design concentration is achieved but the enclosure is not able to retain it for the required/recommended holding period which is usually 10 minutes.
Remedial work should then be undertaken to reduce the leakage from the enclosure. This remedial work could include;
- Sealing all holes, cracks or penetrations leading into or out of the protected space
- Pipe chases and cable trays to be sealed around the outside and inside where they penetrate the perimeter boundaries of the enclosure
- Walls to be caulked around the inside perimeter at both high and low level
- Sealing of porous block walls
- Addition of door sweeps or drop seals, weather stripping around jambs
- Sealing of windows/glazed sections to the area
One of the advantages of the sealing works being conducted whilst a test fan kit is in place, is that it can be seen if the works being conducted are effective via smoke testing and ongoing sealing works resulting in a fire enclosure test pass.
Once the appropriate remedial work has been undertaken then the enclosure should be retested to confirm if an acceptable level of enclosure integrity has been reached.
Pressure Test Limited carry out remedial works and would be pleased to submit a quotation should there be any doubts as to the enclosure’s ability to retain extinguishant or if a previous enclosure test has failed.
Once the appropriate remedial work has been undertaken then the enclosure should be retested to confirm if an acceptable level of integrity has been reached.
Air Pressure Testing can carry out remedial works and would be pleased to submit a quotation should there be any doubts as to the enclosure’s ability to retain extinguishant or if a previous test has resulted in a failure indicated a failure.