Security rules for the installation and assembly of lifts. Specific applications for passenger lifts and lifts for the transport of passengers and goods. Part 73: Operation of lifts in case of fire

This document specifies technical requirements for the design, manufacturing, installation, and operation of lifts intended for use in fire situations. It applies specifically to passenger lifts and goods passenger lifts, addressing critical safety measures necessary when fire is detected or during emergency evacuation procedures. The content outlines mandatory configurations for control systems, ensuring that lifts can be safely recalled to designated floors or operated in a firefighter mode depending on the specific scenario. Detailed criteria are provided regarding power supply redundancy, communication systems, and the mechanical integrity of the car and shaft during exposure to heat or smoke. It also defines protocols for the automatic return to a safe floor and the subsequent shutdown of the lift to prevent further risk to occupants. The text includes guidance on interface with fire alarm systems and the necessary documentation required for compliance. These provisions aim to enhance the resilience of vertical transport systems in emergency conditions, ensuring predictable behavior under stress without compromising the safety of users or emergency responders.