This is a simulator for Reika's minecraft mod ReactorCraft.
Direct Link : http://yuyuyzl.github.io/ReactorCraftSimulator/
We use exactly the same algorithm as the mod itself (tons of random) and give the important data you need in a minute instead of hours or days waiting in creative & superflat.
BUT I am not responsible for the explosion of your reactor. :P
Thanks to DPurple for the java version simulator. I converted it to Javascript and wrapped it with AngularJS and Bootstrap.
ReactorCraft Github repo : https://github.com/ReikaKalseki/ReactorCraft