With the new release removing most radioactive ore byproducts and thus the ability to obtain plutonium from ore processing, the reactor fuel progression has been improved quite a bit. Before this change, the plutonium could be used to run efficient (non-moderated) critical reactors and therefore also breeder reactors to produce more high-grade fuel. This allowed just skipping uranium hexafluoride processing altogether.
With this change however, the player is required to either setup the uranium hexafluoride processing chain or burn enough U238 in reactors to obtain nuclear fuel with a factor of 1/4 or higher, requiring some more investment.
But⌠there is one they fear. In their tongue heâs âNq-528â: Enriched Naquadah. Enriched Naquadah was a nuclear Fuel, so powerful and so abundant it could use its exceptional properties to influence players to never create uranium hexafluoride processingâŚ
Enriched Naquadah is quite easy to find, located at the underside of the end island.Though it may not exist there in huge quantities, the ease of locating it and the power before processing allows quickly accumulating a big amount of Enriched Naquadah, probably also alongside some even more powerful Naquadria as an ore processing byproduct. Why track down a uranium deposit and setup complex processing chains and setup breeder reactors, when obtaining one of the best fuels is so easy? There is also a point to be made, exactly how powerful Nq-528 is, i.e. how many neutrons per fuel rod can be extracted.
Lets first look at U-238 as an example of a lower grade fuel. The theoretical maximum energy output would be 512 Neutrons per tick, however, since the factor is lower than 1/4, archiving this output requires using moderator rods and therefore incurs the moderation penalty, making the rod deplete four times faster, thus reducing overall energy produced to a forth. When using industrial coolant and absorber rods, it is possible to extract a bit more energy from the fuel rod: 144 HU per tick. So U-238 runs for 50_000 minutes at 144 HU/tick, resulting in: 8_640_000_000 HU per rod
Now lets look at U-235. Since it has a factor of 1/4, it can be run in a critical reactor without moderation. This allows archiving an energy output up to the full neutron maximum of the rod, 2048 Neutrons. Realistically, the neutron output wonât be stable nor exactly reach 2048, best case being at an average of 7/8 of the neutron maximum, so we will use that for our calculation. U-235 runs for 10_000 minutes at 1_792 HU/tick, resulting in: 21_504_000_000 HU per rod
The best (non-Nq) fuel is Pu-239 which can be breed from U238. Since it has a factor of 1/3, it can be run a bit more efficiently in a critical reactor, since there is one free side for a absorber rod, resulting in neutrons that produce double the energy and additionally arenât counted towards the neutron maximum. Since there are however only three sides with reflectors, controlling the reactor occurs a greater neutron loss, resulting in a an best case average of 5/6 of the neutron maximum, however times 5/3, because of the additional energy from the neutrons on the absorber rod. Pu-239 runs for 20_000 minutes at 5_688 HU/tick, resulting in: 136_512_000_000 HU per rod
So, now lets look at Enriched Naquadah. Having a factor of 1/4, like U235 we can expect a neutron output of 7/8 of the neutron maximum in a critical reactor. Nq-528 runs for 100_000 minutes at 7_168 HU/tick, resulting in: 860_160_000_000 HU per rod
For completeness, Naquadriah is just Pu-238, but lasting 5 times longer and having a 4 times greater maximum. Nq-522 runs for 100_000 minutes at 22_752 HU/tick, resulting in: 2_730_240_000_000 HU per rod
I think the numbers clearly show, that Naquadah is very very powerful. However the problem isnât necessarily that they are so powerful, a Naquadria rod being 316 times as powerful as a U-238 rod is imo reasonable, but rather that they are so easy to obtain. My proposal would therefore be to make Enriched Naquadah and Naquadria harder to obtain. The necessary first step would be to remove Enriched Naquadah from worldgen and Enriched Naquadah and Naquadria as byproducts of Naquadah ore processing. Iâd leave depleted Enriched Naquadah fuel rods as the only way to obtain Naquadria and for obtaining Enriched Naquahah, there needs to be added a new way. Since Enriched Naquadah is an isotope of Naquadah, this realistically leaves three plausible ways of enriching it:
- A new isotope separation processing chain, like the uranium hexafluoride chain.
- A new fusion recipe
- A new fission breeding ârecipeâ
A new isotope separation processing chain alone would not be enough, as it would potentially still let players skip the nuclear fuel progression, it would need to be tied into either requiring materials from fission or being applied on the result of a fission breeding recipe instead of on the ore.
Same issue with the fusion recipe, but here I would be fine with it theoretically being able to skip some nuclear fuel progression, since the startup power of the recipe would need to be even higher than the vibranium recipe and the whole prospect of building and running a fusion reactor without having gone through fission for energy seems so ludicrous, that rewarding the player here is appropriate.
Iâm however convinced that a fission breeding recipe would be the best option, since it is the most natural way to integrate it into the fuel progression and also allows the required energy imput to be more finely tuned.
For a potential Naquadah breeder rod Iâd suggest these stats:
Neutron Loss: 10_000 Neutrons
Reasoning: Refining a non-fuel material into a such a powerful fuel should be a real challenge, not being just able to throw the breeder rod into any breeder reactor. A higher value wasnât chosen, as this already gets quite close to the maximum measurable neutron count of 65535.
Neutrons Required: 4_096_000_000
Reasoning: While a Enriched Naquadah rod isnât 16 times more powerful than a Pu-239 rod (more like ~6 times more powerful, ~9 times if also accounting for Naquadria from depletion), I feel like it doesnât need to be the most efficient or meta fuel, it is more of an luxury item anyway. Nobody really needs to run Enriched Naquadah or even something as ridiculous as a Naquadria Thorium-Salt reactor. Maybe the required amount of neutrons could even be even higher.
What is the general consensus here on this topic?