This my Map that I created to be my closest representation on Chernobyl Reactor 4. To use this map, you most likely have to install the HBM Nuclear Craft mod for 1.7.10. If you are able to get on the map with no issues, there will be signs scattered around the building explaining how the reactor works and how to make it explode. I have also created a Modpack that has this map, the HBM nuclear mod, and 2 other mods. I hope you will enjoy this map and if there are any problems let me know using comments.
Go check out the HBM Mod it is really good.