Well, As you might know, that unlike vanilla, Cerys adds some nuclear recipes that require fluid I/O
And, well, the pipes are not spawned correctly (Inside building), making it impossible to work with fluids
Proof: https://drive.google.com/file/d/1e_qzB3OMCYOQV0rPQycMg05bW8A4nCb2/view?usp=sharing

Your decision on how many fluid input / output it should have, but they definitely should not be on the inside

The building itself surely looks epic, and, in fact, what made me finally download the mod

Fluid input/output is difficult, because it needs graphics for the pipe connection points. Previously, I've tried to shim on fluid points to the centrifuge, borrowing the assembly machine graphics for them, and the results are far from ideal. I suspect it will be a similar issue with the atom forge, since Hurricane's graphics don't include pipe connections.

I'll look into what Cerys' solution for the centrifuge is and see if I can use it for the atom forge.

https://mods.factorio.com/mod/cerys-and-nuclear-science
someone already makes this fix, i will include it in my collection, make it incompatible when you find your solution.
Thanks.