I have collected everything in prison area, then I headed to central. Then I got the Nobody Home part in the Journal. It tells me to go to Engineering, but the tram can't go there...

explore central room, you will find key card in Console for Engineering, so then you can open the door to engineering, dont forget to bring full oxygen can and thermal can

So that's where... Thanks man...

firstly you must find key to the control room, check all room in central room ( drawers etc..), you will find key to this room, then check console inside, you will find some keys to the other places