That's very nice of you. c:
No problem, I love informing people about the chernobyl disaster. The stories told about it are some of the most beautiful and saddening ive heard. Also, I know many people have told you already that the nuclear reactor does not look like that, and some have even uploaded images. Let me add a few more for reference:

This is the layout of the plant. Its labeled rather well, but is still very confusing for those that do not know the plant well. If you can find aerial views of the plant today, you should be able to understand it rather well.

This is what the Chernobyl reactor looked like. Its design is called the RBMK 1000 reactor, used across the Soviet Union. Its design flaws partly lead to the accident.
The importance of this picture is the area labeled 8. That area is where you would see the reactor if it were still alive. However, you are making a destroyed version of the reactor. Basically, there is nothing left or even marks of a reactor vessel. This is what it looks like now:

Top down view of the reactor from the outside, since its roof was entirely destroyed.

Probably one of the nicest photos of the destruction. The sarcophagus, or containment, was just being started at the time of that picture. Thats why there are cranes. I know you are doing interiors, but the outside pictures are much more common and make it easier to know what the inside looks like.