Radiation Zone

Radiation zones emit ionizing radiation.

A radiation zone is an area contaminated with ionizing radiation -- a reactor leak, a rad-storm, an unshielded drive core, or a rad-weapon detonation. The zone is divided into tiers based on dose intensity: low (DC 12), moderate (DC 15), severe (DC 18), and lethal (DC 22). At each interval (1 hour for ambient zones, 1 minute for acute sources), characters inside must make a Fortitude save against the zone's DC. A failed save deals 1d4 Constitution damage; low-to-moderate zones impose Sickened or Exhausted instead of direct damage. If Constitution drops below the system-shock threshold, a System Shock roll is triggered. The dose clears with a rad-scrub chem (Medicine DC 18) or a Medbay stay. Lead-lined armour and rad-shielding grant +4 resistance, and constructs are unaffected by radiation sickness.

Rules Reference

Field	Value
Dose Model / Acute Interval Seconds	60
Dose Model / Ambient Interval Seconds	86400
Dose Model / Hospital Interval Seconds	86400
Dose Model / Hospital Recovery Dice	1d4
Dose Model / Irradiated Rest Divisor	2
Dose Model / Medication Bonus	4
Dose Model / Medication Seconds	3600
Dose Model / Rest Seconds Per Point	86400
Dose Model / Save Ability	Fortitude
Dose Model / Schema Version	1
Dose Model / Window Seconds	86400
Duration / Default Formula	until scrubbed or decayed; ticks at dose interval
Duration / Type	persistent
Onset / Trigger	entry
Onset / Type	immediate
Prevented By	Lead-lined / rad-shielded armour, Rad-pill (pre-dose), Construct physiology
Save / Dc	12 (low), 15 (moderate), 18 (severe), 22 (lethal)
Save / Interval	1 hour (ambient), 1 minute (acute)
Save / Type	Fortitude
Stacking	extend
Category	hazard

Dose Model / Tiers

dc: 12

Field	Value
dc	12
failure.constitutionDice	1d4
onsetSeconds	3600
tier	trace

dc: 15

Field	Value
dc	15
failure.constitutionDice	2d4
onsetSeconds	600
success.constitutionDice	1d2
tier	low

dc: 20

Field	Value
dc	20
failure.constitutionDice	3d6
onsetSeconds	60
success.constitutionDice	2d4
tier	medium

dc: 25

Field	Value
dc	25
failure.constitutionDice	4d6
failure.sickenedDaysDice	1d4
onsetSeconds	0
success.constitutionDice	3d6
tier	high

dc: 30

Field	Value
dc	30
failure.deathHoursDice	1d6
onsetSeconds	0
success.constitutionDice	4d6
tier	lethal

Effect

description: Failed save deals 1d4 Constitution damage (low doses impose Sickened/Exhausted instead).

Field	Value
description	Failed save deals 1d4 Constitution damage (low doses impose Sickened/Exhausted instead).
modifier	-1d4
target	constitution

description: Low-to-moderate zones impose Sickened on failed save.

Field	Value
description	Low-to-moderate zones impose Sickened on failed save.
modifier	sickened
target	condition

description: Severe zones impose Exhausted on failed save.

Field	Value
description	Severe zones impose Exhausted on failed save.
modifier	exhausted
target	condition

description: Constitution dropping past threshold triggers a System Shock roll.

Field	Value
description	Constitution dropping past threshold triggers a System Shock roll.
modifier	trigger
target	system-shock

Mitigation

description: Lead-lined / rad-shielded armour grants +4 resistance.

Field	Value
description	Lead-lined / rad-shielded armour grants +4 resistance.

description: Rad-pill (pre-dose) grants +2 resistance for 1 hour.

Field	Value
description	Rad-pill (pre-dose) grants +2 resistance for 1 hour.

description: Medbay stay or rad-scrub chem (Medicine DC 18) clears the accumulated dose.

Field	Value
description	Medbay stay or rad-scrub chem (Medicine DC 18) clears the accumulated dose.

Severity Tiers

dc: 12

Field	Value
dc	12
effect	Sickened on failed save
tier	low

dc: 15

Field	Value
dc	15
effect	1d4 CON damage or Sickened
tier	moderate

dc: 18

Field	Value
dc	18
effect	1d4 CON damage and Exhausted
tier	severe

dc: 22

Field	Value
dc	22
effect	1d6 CON damage and Exhausted
tier	lethal