The new design of mine was inspired by my previous simple design and Rick's reactor forum thread (I never had a look at his actual reactor in minecraft, just some screens)
This new design supplies around 4-6 buckets per second to the VERY hot reactor. It is practically previous design, just MUCH bigger, but it fits on a single chunk (size 15x15) so instant load of reactor possible.
It is extremely efficient and don't need cool down time.
It is also more expensive(not by much more), but i haven't counted all pieces used to create it, but i will, and later remake it legitly.
The additional mods was used for BC.
Bucket Filler and Additional Pipes was used to make this design and previous one, without it, design would be impossible to make.
Note: This is the biggest possible design, any more efficient design are to dangerous and would make system to complex to make sense.
Another Note: Not a single feature of redpower 2 was used.
The schematics file will are already here!
The reactor design are modular, and made with a similar parts, and can be changed to be less powerful(and dangerous).
All designs parts was made and tested by me. So it is entirely my design.
Few other notes.
Reactor lags and will lag, if you not gonna use optifine, otherwise minecraft gets unplayable.
A single mistake in system can call a rapid explosion, if a bucket leakage occurred, system will shortly run out of them, and again will explode. Attempt to make a safety system to prevent it failed, due too fact that reactor didn't want to burn wool block fast enough.
There are more then 3 stacks of buckets spinning in the system.
System was partially and entirely redesigned 6 times in total.
The giant arrays of redstone engines are necessary to keep bucket filling rate fast enough, otherwise this design would explode shortly.
Not a single buffer chest used, system cannot afford them, since they slowing it down.
Only input bucket chest there.
Currently it most powerful CASUC non stop reactor.
Schematics have reactor running at 794 Eu/t for safety reason, but you can put extra uranium cell in to increase output to 820 Eu/t, but it is not very recommended.
Be sure you have necessary mods. They listed in the top part of OP.
It is preferred to use MCedit to paste schematics over world edit, since some corruptions may occur in reactor which will lead to explosion and destruction.
If you putting reactor in some of your important worlds, please back world up just in case it explodes leading mass destruction and chaos.
Put reactor in a single chunk.
If all pumps are blue color, wait for them to start flashing to red color, it may take long time. If they are flashing red already, then you are fine, and can go next step.
Turn return bucket leaver off to make piping system closed around reactor. (Located below reactor, between chests)
Turn leavers on the chests pumps to put buckets in the system. (You dont have to put all buckets, but it is very recommended)
Wait for enough buckets to fill up a system.
Start reactor with a leaver on the reactor level, it is easy to find.
Enjoy your power.
I happy to discuss this reactor.