There are many ways to build a nuclear reactor, some of which are completely safe, and produce plenty of EUs.
Some YouTube tutorials:
1180EU/t nuclear reactor completely automated and safe(can't make faster EU than this):
The 1000 EU/t version:
The basic setup tutorial (for beginners):
Example of an alarm system:
Pages in category ‘Nuclear Reactor’
The following 16 pages are in this category, out of 16 total.