Hi, well without any "pipe" mod you will have a bad time to create a coolant reactor, so I at least recommend you buildcraft or extra utilties (which I both use)
Anyway: your reactor layout is not very effective (only 2.71). You could use mine ( http://www.talonfiremage.pwp.b…xmz0i1907c8tn8myu07dw67ls ), which give you a stable 1120HU with an overall efficiency of 3,79.
The reactor can be run 24/7 if you have enough uranium and enough storage for the generated power.
The hot coolant output of the reactor can be hooked up with steam generators:
You can hook up 3+2 steam generators with 2 heat exchangers each to generate super heated steam (1mb water -> 221bar pressure), and one with 1 heat exchanger for normal steam ( 1mb water -> 1 bar pressure).
You should still have some sort of tank in between to store the hot coolant and prevent the reactor to overheat (since the layout gives you approx 1120 HU, and with that layout you only use 1100HU, so you have 20 hu "too much" which fill up a tank slowly)
the superheated steam of the 3+2 steam generators can be moved via any pipe or the fluid regulator into 2 kinetic steam generators each which are hooked up to two kinetic generators each. at the end you add one condensor ("overclocked via some heat vents, you can try how many you need ...). all 3 will output distilled water which has to be piped back into the steam generators (mostly you should use some sort of pipe for that, fluid regulators need to much energy)
the one steam generator with the normal steam is only hooked up to one kinetic steam generator and one condensor.
I experimented to put the output of all 5 steam generators into 2 generators, but this seems to much for one condensor, and the higher turbine speed seems not to affect the overall output, but I had more problems moving the steam to the turbines. with the 3+2 layout its much better.
Overall that should produce 800-900Eu/t (instead of 260Eu in "electric" nuclear power plant mode)
Even those kinetic steam stuff is still a bit buggy and not very reliable (I had some steam explosions destroying my steam generators until I found a better layout)
In the attached "generator room" picture I only use 1000HU, since so the reactor can be shut down if my hot coolant tank is full and it the generators produce energy for some more hours.
Explanation for the picture:
On the right: 3+3 steam generators hooked to 2 heat exchangers each. the lowest steam generator in the top right corner is not connected (otherwise I would need 1200HU) All heat exchangers are equiped with fluid ejectors so they put the "cool" coolant into the tanks . the hot coolant comes from "above" (railcraft tank on the right)
to the steam generators attached is a distilled water tank (the 3 tanks in the middle of the picture). the one in the middle of them is hooked up to a larger distilled water generator in the lower floor, to refill if some water gets missing (if the level of the outer tanks falls below 50% it will refill them to avoid that steam will be put into those 2 tanks)
the same output which goes to the distilled water tank of the steam generators goes to the 2 one fluid regulator, those 4 blocks on the left are hooked like that:
[Condensor] [ Fluid Regulator VV]
[Kinetic S. Generator] [ Kinetic S. Generator]
in front are 3 tanks (one spanning the condensor and the left generator, one for the right generator) to take the distilled water. (Fluid ejector upgrades) These tanks put its contents back to the tank in the middle.
The 2 brown blocks are bat boxes, to power the condensor and the fluid regulator even if the generators dont generate power. (okay if the power the bat box is empty, the whole generator will shut down and cannot be brought back online until you put a battery in)