Radiation (Fallout Supplement)

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Radiation[edit]

Radiation is common in the world of Fallout, all around the world. This background radiation, higher than the pre-war levels, is usually no higher than Mild. However, the peoples of Fallout have, through evolution, FEV exposure, or (ironically) mutation caused by radiation, become more resistant to lower forms of radiation. Besides this, a new level of radiation, faint is being introduced. This radiation level is found in some food and water sources (drinking or standing in them), but is easily purified, and does no real damage: It simply makes the consumer Fatigued. This is the level radiation exposure that most wastelanders are exposed to.

Faint radiation is most commonly found in water (both bottled and in outdoor sources) and food (pre-war and mutant animals). The radiation levels in food and water is usually faint, but mild radiation levels are not unheard of in especially irradiated environments, and higher (up to Moderate) levels are possible. Non-irradiated food can also be found, especially in vaults and in the NCR.

Ingesting radiation through food and water works differently than regular exposure in a few ways. First is that food doesn't have a radioactive materials rating but instead has a set radiation level. Second is that the reason why food/water has a set level is because the radiation sickness is applied as soon as the food/water is ingested and does not have a frequency. Third again relates to the previous rules as food/water does not radiate radiation, meaning that simply holding faintly irradiated food does not irradiate the holder, but will irradiate them if they eat the food.

Radiation exposure now has six degrees: faint, mild, low, moderate, high, and severe. To determine the degree of exposure, start with the type of exposure: either an irradiated area (such as the area near a nuclear explosion, after the fact, or a lab that has been flooded with radioactive gas), or a specific source of radiation (such as a lump of radioactive material). Then consult Table: Radiation Exposure to determine the degree of exposure based on the total time of exposure within a given 24-hour period (rounding up).


Table: Radiation Exposure
————————— Time of Exposure (Minimum) ————————
Situation 1 round 1 minute 10 minutes 1 hour 1 day
Character in irradiated area:
Weakly irradiated faint faint faint faint faint
Lightly irradiated mild mild mild mild low
Moderately irradiated mild mild low low moderate
Highly irradiated low low moderate moderate high
Severely irradiated moderate moderate high high severe
Character exposed to radiation source:
Weakly radioactive materials faint faint faint faint faint
Lightly radioactive materials mild mild low low low
Moderately radioactive materials low low moderate moderate moderate
Highly radioactive materials moderate moderate high high high
Severely radioactive materials high high severe severe severe

The degree of the exposure determines the severity of the radiation sickness, as indicated on Table: Radiation Sickness. At low levels, radiation sickness is a slow disease. Often, a sick character suffers no severe short-term effects. This is reflected in the fact that even with a failed Fortitude save, the character might not suffer any Constitution loss.

Table: Radiation Sickness
Degree of Exposure Fortitude Save DC Incubation Period Initial and Secondary Damage
Faint 10 1 day Fatigued for 1 day/No secondary
Mild 12 1 day 1d4–2 Con*
Low 15 4d6 hours 1d6–2 Con*
Moderate 18 3d6 hours 1d6–1 Con*
High 21 2d6 hours 1d6 Con
Severe 24 1d6 hours 2d6 Con
* Minimum damage 0 Con.

Treating Radiation Sickness[edit]

Radiation sickness is considered a treatable disease that can be cured using the “treat disease” aspect of the Treat Injury skill, but requires a Medical Kit. Some chems (Rad-Away/Rad-X) and feats can also assist in fighting radiation or obviate its harmful effects.


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