Duct Smoke Detector Testing Duct smoke detectors work on the concept that there is a differential in pressure across the pickup tubes inside the duct. This causes the air to constantly be moving in the tube and across the detector face. Each manufacturer issues an acceptable range within which the detector will work properly. Each detector once mounted on the duct should be tested to verify the device has sufficient differential pressure to work properly. We can measure the smoke detector differential pressure to determine if it is operating within the manufacturer’s designed differential parameters. Fire / Smoke Damper Testing Aside from testing, when first installed all Fire Dampers, Smoke Dampers and Combinations F/S Dampers require periodic testing to ensure they are performing properly. Each damper needs to be tested and inspected one year after installation. Tests and inspections then need to be completed in all buildings every four years, except in hospitals, where the frequency is every six years.  . Verify unobstructed access to damper. . Range of motion test as required by NFPA]72. . Remove fusible link and verify free operation. . Verify damper frame has not been penetrated. . Verify damper is not blocked in any way. . Reinstall or replace fusible link after testing. . Document all testing with details on how deficiencies were corrected.                                                                                               Fire/smoke damper that was never wired.
Smoke Management Systems Welcome The majority of fire related deaths is due to smoke inhalation. The purpose of smoke management systems is to minimize deaths and injuries due to smoke.  Some of the components that are critical to these systems working properly are smoke detectors, smoke management fans and smoke/fire dampers within HVAC duct systems. For over twenty years Bay to Bay Balancing, Inc. has been testing each of these components and helping to ensure the safety of your building’s occupants. Smoke Evacuation Testing One of the primary life safety aspects of smoke management systems is the establishment of  smoke zones to control smoke within the alarmed zone and to prevent it from moving to adjacent zones in order to allow occupants time to evacuate the area. Be it an elevator lobby or a large atrium we can conduct a smoke evacuation test to verify all systems are operating within the design parameters. We can also commission these systems to ensure the fans, dampers and other components operate as required in the design sequence of operation.  All life safety systems should be retested at least annually. Stairwell Pressurization Testing Stairwells are the primary means of egress to escape a building with a fire in it.  This makes it critical that the stairwell pressurization system be working properly to prevent the infiltration of smoke into these areas. We provide testing and documention of system airflow, differential pressures across the doors, measure the fans parameters such as amperage, rpm, voltage and static pressure and record the force required to open stairwell doors.  The sequence of operation is then commissioned to ensure it is operating within the parameters set by the engineer in the design intent documentation.  Systems should be retested annually.