Looking fantastic already. I'm having a hard time figuring out what kind of material the walls are made of though. Not sure whether it's concrete or metal. I think you could really bring this scene to life if you use a complimentary blue here and there (on textures I mean, not on lighting). I know blue/orange combination has been done to death but you could try and see if it works.
A few monitors emitting subtle blue or green lights here and there would also look cool imo, this kind of stuff will really make the silhouette of the pipes much better.