Ingenieur Vol 71 ingenieur July 2017 | Page 47

it. Movies can feature creatures emerging in lifts and start eating up the passengers, or some horror movies even feature bloody water gushing into the lift and drowning the victims – but they cannot create such dramas with escalators. When the rope attached to the lift cage snaps, the lift cage falls. But when the lift cage falls the brakes take over and stop the fall – this means, movie directors have to create a scene where all the brakes fail in order to create a free fall scene out of it. On the contrary, the most damage you can do to an escalator is to make it stop, and turn it into a staircase – that’s it! The escalator is a beautiful piece of equipment, the ride on an escalator gives the passenger an uninterrupted shopping experience with a vertical moving journey having a full 360° visual and audio environment. This is unlike getting into a lift, where you are visually disconnected from the environment as you go from floor to floor. If you want to get to your destination faster when riding an escalator, just walk from step to step, and this gives you a good sense of “achievement” and satisfaction, that you are a person who would not settle with the pace of the world. BREAKDOWN ‘Man trapped’, this is one of the greatest nightmares of mall operators. It is definitely a disastrous shopping experience getting trapped in a lift while holding bags of merchandise, shoulder to shoulder with strangers – before people start to sweat or pass gas… An escalator will never have this problem; broken down escalator? it just becomes a staircase, just walk up or down. CLEITHROPHOBIA In the Asian context, riding a lift is a socio-emotive thing in a culture where we do not greet strangers, neither do we show happy faces entering a lift full of strangers. If we were tucked at the back of the lift car, instead of asking someone to press the floor button for us, we would rather stretch out our hand to press it ourselves – very Malaysian. A quiet lift is bad, mirrors in the lift are bad, those few seconds of journey in the lift feel like years of silence. We cannot wait to get it over with and just get out of the lift once we have reached our floor. We are at the mercy of luck, depending on where we are positioned in the lift, where the only pastime is to count the number of moles the person in front of us has on his neck. BUT IT AIN’T ALL SUNSHINE AND RAINBOWS Ju s t like any p ie c e o f mechanical equipment, things that move need maintenance, including vertical transportation equipment with more than a thousand moving parts. In a country with more than 550 shopping centres, the total number of lifts and escalators adds up to a very large number, and at any one moment of time, these machines are serving thousands and thousands of passengers. There are a few processes in the industry that would help us to minimise lift and escalator accidents or defects - firstly, consulting engineers and architects must choose the right specifications and placement of these equipments strategically at different parts of the mall, factoring in the volume of passengers, that’s “doing things the right way”. When lifts and escalators are installed and maintained under the original manufacturer’s own best practices, and DOSH’s in sp e c tion and approval guidelines for installations are followed, this is when the installation of lifts and escalators is being “done the right way”. Nevertheless, accidents do happen and when they happen, it saddens everybody. Therefore, best engineering practices must be enforced throughout the entire value chain from design, installation and operation of ver tical transpor tation equipment. Over the years, the industry has progressed from “compliance” based applications to “best practice” models. There are some great new features which were voluntarily implemented and promoted by lift manufacturers and mall operators, such as energy saving escalators with sensors, or escalators with audible warnings on top of the existing visual warning signs and stickers on the equipment. So for best practices, mall management must ensure escalators do not become stairs at any time. 45