The three-part scope of this case study covered escalator availability, safety and asset management. Firstly, the study explored definitions and targets for escalator availability and identify causes of, and solutions to, unavailability. Secondly, it identified low-cost practices to improve safety. Finally the study benchmarked escalator asset lives and the nature of maintenance interventions during the lifecycle.
Long-term actions that metros have taken to improve escalator availability are the operational and maintenance practices either to reduce failures from occurring or to restore availability as quickly as possible after escalators go out of service. This involves proactive maintenance work to ensure that escalators are in good condition during passenger service hours, and working with maintainers to optimise their response and supply chain.
Regarding escalator asset management, it is important to adopt a whole-life approach and assess maintenance approaches on this basis, considering the annualised cost of ownership, whole-life unavailability caused by maintenance, the scope and frequency of maintenance interventions throughout the lifecycle, and the customer-facing unavailability caused by maintenance.