How often should smoke detector spacing be reassessed in a corridor?

Reassessing smoke detector spacing in a corridor annually is critical for maintaining safety and compliance with current regulations and standards. Over time, factors such as changes in building occupancy, modifications to the layout, and the addition of new equipment can affect the performance of smoke detection systems. By reviewing the spacing annually, it ensures that detectors are correctly positioned to provide optimal coverage and can effectively respond to smoke conditions, thus enhancing the overall reliability of the fire detection system.

In contrast, more frequent assessments such as monthly or every six months may not be necessary for corridors that have stable conditions, which might lead to unnecessary costs and labor. Only assessing the spacing after installation does not account for any changes that may have occurred, failing to maintain the detector system's efficiency over time. Therefore, an annual reassessment strikes the right balance, allowing for necessary updates while managing resources effectively.