Reactor + 6 chambers. Total of: 12 Integrated reactor plating, 9 Integrated heat dispenser, 26 Coling cells
Highest EU per cycle: 4kk, Uranium cells used: 2, Efficiency: 2 (Class C)
Heat/Cool Surplus: -3.2 not counting outside cooling. As it does not generate heat and cools on its own its Mark I-I reactor.
Cost-to-gain ratio: Bad. It uses a lot of heat dispensers, platings and uses 6 chambers only giving Efficency of 2 and 4kk EU.
Safety: 100% safe (not mentioning intentional removal of cooling or pouring lava into reactor leading to critical meltdown)
Tested: Working all right.
Upgrade capabilities: Possible upgrade to design making it more cost-effective.
Constructor: Proso, Me, Nihil (all one person). Using Liko2k private (somewhat UTS [see star-wars combine]) server and some of materials mined by him.
Expansive but save and sound. No external cooling needed. No overseeing needed (only to put extra uranium).
It got totally different name, but that name is offending (relating to nuclear catastrophic event) and thou shalt not be used officially.