How does installing 4 lifts help getting the large scanners up to the first floor? You cannot spread one item of equipment across more than one lift.
On the subject of lifts will there be any alternative to lifts once the construction is completed to get up from check in level?
Some people don't like lifts and for going up one floor lifts seem overly complicated, expensive, will produce queues and people can get stuck if they break down.
In London the worst tube stations are those with lifts. Escalators are much better.
This question re lifts has popped up many times. I think its a red herring.
The lifts will be high capacity, operating only across two floors. They'll operate like a shuttle - if at the bottom, go up; if at the top, go down. I suggest that 4 lifts is heavily over-spec'd in case of breakdowns, and in reality most of the time lifts will have only a handful of people in. In any case, with 4 lifts operating concurrently i find it very unlikely that there will be a wait of more than a few seconds to get in - it's likely there will be one with its doors open on the ground floor, one with its doors open on the first floor, one travelling downwards and one travelling upwards at all times and, with a total journey of probably no more than 10 seconds up or down, there'll be a door opening very regularly.
The only gripe really likely is that the doors will probably take longer to open and close than the time for the actual vertical journey - but that is the modern world for you.
The lifts replace escalators which generally, in my view, use space inefficiently. The space opened up where the escalators were previously situated provides plenty of circulation space at the back of the check-in areas - which is basically non-existent currently - whilst also providing significant extra space on the first floor for security or for addition commercial use - as well as making everything much brighter.
Of course, you are probably right that in an ideal world building in a sandbox without space constraints, escalators (lots of them) would probably be a better solution overall. But we dont have that here.
From the plans i saw previously, i think there are stair cores either side of the lift lobby, if people are really desperate.