Risk analysis and rescue operation for machine roomless lift: A case study

We analyze potential risks of machine roomless lift at system design level by evaluating risk rate (R) which is a combination of occurrence (O) and severity of specific risk (S). Risks during installation, testing and commissioning of lift, maintenance and rescue operation which might endanger life of person are considered. Our study includes identify risk, determine risk rate and formulate control measure to reduce risk rate to acceptable value by applying extensive field experience and sound engineering know how in lift system. From risk analysis outcome, we are motivated to develop comprehensive rescue operation flow which would be useful guide for generic MRL system design as there are no much literatures in this topic.