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Osborn Engineering understands the success of fire protection and life safety systems rely not only on their individual performance, but also on how they all work together. One fire alarm initiating device may have numerous outputs to various interconnected adjacent systems such as opening or closing of dampers or doors, starting or stopping of fans, recall or shunting of elevators, overrides to lighting controls, muting of background audio systems, and overrides to show effects. A basic fire alarm test does not typically include the end-to-end testing of the actual responses of interconnected systems beyond the fire alarm output signal to a relay. NFPA 4 Standard for Integrated Fire Protection and Life Safety Systems Testing provides guidance to all stakeholders in the overall process of Integrated Safety Systems Testing (ISST).  There are two primary buildings that require NFPA 4 testing: • Life safety systems in high-rise buildings NFPA 101-§11.8.9 & IBC §901.6.2.1 • Life safety systems that include smoke control NFPA 101-§9.3.5 & IBC §901.6.2.2 This testing should be conducted in new buildings prior to issuance of Certificate of Occupancy and for existing buildings, at intervals not to exceed 10 years or as specified in an approved NFPA 4 ISST plan. It is also recommended to conduct retesting following the repair or replacement of equipment. In these cases, retesting is limited to verification of the responses for fire protection or life safety functions initiated by repaired or replaced equipment. As Jurisdictions begin to adopt NFPA 4 and ISS testing, Osborn Engineering is prepared to provide guidance to building owners and project teams. In Florida and similar jurisdictions NFPA 101 adoption already drives ISST even for existing buildings. Don’t wait to reach out. Let our life safety experts help lead the process. 

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