Decommissions the current Power Plant in this city, and replaces it with the Nuclear Power Plant.
Nuclear Power Plant:
Automatically converts any amount of Uranium into Power for cities within 6 tiles that need it each turn, at the rate of:
1 Uranium 16 Power
Miniscule CO2 into the atmosphere
Once built, as a Nuclear Power Plant ages, there is an increased chance for a Nuclear Accident to occur. Its Production and Science bonus is extended to all City Centers within 6 tiles that do not already have a bonus from a Power Plant building.