For spaces requiring gas extinguishing, it is essential that they are sealed to prevent gas leakage. According to NFPA 2001 and EN15004 standards, chemical gases such as HFC227ea and FK-5-1-12, as well as inert gases (IG01, IG100, IG55, IG541), must remain in the room for a minimum of 10 minutes after discharge. While the fire may extinguish immediately upon discharge, the gas must remain to prevent re-ignition during this critical period.
The purpose of a leakage test is to identify potential leaks in the room by area (m²) and calculate how long the gas can be retained in the space.
The test is conducted using a fan. First, the room is pressurized, then the fan is reversed to exhaust air out of the room. The air pressure inside the room and through the fan is measured with a highly sensitive digital manometer. These values are analyzed by advanced computer software. If the calculated retention time meets the 10-minute requirement, the room passes the test. Otherwise, revisions are made to seal the leaks.
The gas retention time is also affected by whether the HVAC system operates during discharge.
- If the HVAC system is turned off during discharge, the gas level in the room must not drop below 75% of the minimum room height after 10 minutes.
- If the HVAC system remains operational, the gas concentration must not fall below the minimum extinguishing concentration level after 10 minutes.
For Room Leakage Integrity Testing, we use original RETROTEC equipment and software. Additionally, we hold the following certifications:
-RETROTEC Enclosure Integrity Training: Level 1– Basic hold time and peak pressure evaluation for the Installer and AHJ.
-RETROTEC Enclosure Integrity Training: Level 2– Basic Enclosure Integrity Testing and Peak Pressure Analysis.
-RETROTEC Enclosure Integrity Training: Level 3– Advanced Enclosure Integrity Testing and Evaluation.
For detailed information, please contact teknikservis@arasco.com.tr.