Shut that door

摘要

Fire doors perform an important function and are an essential part of a building's protection from the devastating effects of fire. It is essential that the actuation of the door hardware occurs reliably, as a failure to operate might seriously impede the escape of people from fire. For example, by failing to unlock fire exit doors, or by permitting spread of fire or smoke into escape routes. Therefore, ensuring that fire doors work as expected is critical.