When might an existing fire alarm system require re-certification?

An existing fire alarm system requires re-certification following significant modifications to the system because such changes can affect the system's performance, compatibility, and overall compliance with safety standards. Significant modifications may include alterations in the system layout, the introduction of new devices, or changes in the technology used. These adjustments can impact how the system operates, its effectiveness in detecting and alerting occupants to a fire, and its adherence to local and national codes and standards.

Re-certification ensures that the updated system operates as intended and meets all legal and safety requirements, safeguarding occupants and property. Other options, like changes for aesthetic reasons, updates to alarm codes, or receiving awards, do not necessitate a re-evaluation of the system's operational integrity or compliance with safety regulations. Thus, significant modifications serve as the critical trigger for re-certification.