Radiation

Radiation causes radiation poisoning, it will heal over time but if it builds up to 100% then it switches to fatal radiation poisoning which slowly kills the pawn over a couple of days. Radiation poisoning increases disease rates like toxic fallout, there's also dna damage which lasts their lifetime and increases cancer rates.

The storage pool is filled with water which allows you to safely store spent fuel, and any type of wall can absorb radiation, with the amount absorbed being based on the walls hp, 1000 hp absorbs 100% of radiation, anything less reduces it by a percentage per cell that i has to travel through

Radiation suits and MOPP suits will filter out a large percentage of radiation and can be very powerful when combined with potassium iodide pills. The suits also work for protecting against toxic fallout.

While researching at a research reactor colonists may sometimes be exposed to small amounts of radiation.