NU Fuel

Unenriched Uranium fuel is a very cheap nuclear fuel. It is just plain natural Uranium inserted into the rod. It is also very weak. It can be used in both the RBMK and ZIRNOX GCR.

Production
See: Uranium

ZIRNOX
Natural Uranium provides 35 heat/tick and has an estimated lifespan of 120,000 ticks.

RBMK
NU fuel is a weak fuel akin to Thorium fuel, but capable of sustaining criticality.

It has a flux function of: $$\log_{10}(x + 1) * 0.5 * 15$$

The function is considered medium danger and is of the "Logarithmic" type.

A Xenon-135 generation function of: $$x * 0.5$$

And a Xenon burn function of: $$x^2 * 50$$

ZIRNOX
Spent NU fuel emits 35 RAD/s per "piece" when hot and 30 RAD/s when cooled.

When recycled, it gives 1 U-238 nugget, 2 Reactor Grade Plutonium nuggets, 1 Plutonium-239 nugget and 2 tiny piles of nuclear waste.

RBMK
(To calculate with Xenon-135 poison, remove 1% from U235 and add 1% to Xe135)


 * Brand New
 * 87% Uranium-238
 * 9% Uranium-235
 * 2% Long-Lived Nuclear Waste (Uranium-235)
 * 2% Short-Lived Nuclear Waste (Uranium-235)
 * Barely Depleted
 * 81% U238
 * 7% U235
 * 5% Long-Lived Nuclear Waste
 * 7% Short-Lived Nuclear Waste
 * Moderately Depleted
 * 75% U238
 * 5% U235
 * 8% Long-Lived Nuclear Waste
 * 12% Short-Lived Nuclear Waste
 * Highly Depleted
 * 69% U238
 * 3% U235
 * 11% Long-Lived Nuclear Waste
 * 17% Short-Lived Nuclear Waste
 * Fully Depleted
 * 63% U238
 * 1% U235
 * 14% Long-Lived Nuclear Waste
 * 22% Short-Lived Nuclear Waste

Trivia

 * It was the fuel used in the IRL RBMK reactor at Chernobyl.