Why is it critical to establish a fire watch after extinguishing a fire?

Establishing a fire watch after extinguishing a fire is critical primarily to monitor for rekindling or hidden embers. Even after a fire appears to be out, there can still be residual heat or embers that are not immediately visible. These can reignite and cause a secondary fire if not monitored appropriately. A fire watch consists of designated personnel who actively observe the area to ensure that no new fire starts. This vigilance is especially crucial in the case of materials that can smolder and reignite after the initial fire has been extinguished. By implementing a fire watch, the risks associated with rekindling are minimized, enhancing overall safety and preventing further damage or danger to individuals in the vicinity.