SYSTEM / DECONTAMINATION
Decontamination System
The decontamination volume is the transition zone that stops contamination carried in from outside from reaching the living area, the most overlooked yet most decisive part of a shelter.
Dirty–transition–clean layout
The system splits into three zones: dirty (undressing), transition (washing) and clean (dressing and entry). Airflow always runs from clean toward dirty.
Shower and waste handling
Water from the decontamination shower is collected in a controlled way and never mixes with the living-area water system. Contaminated clothing is stored separately in a sealed volume.
Airlock
A two-door airlock prevents the outer and inner doors from opening simultaneously, preserving positive pressure and blocking contaminated air.
Procedure and drills
Hardware alone is not enough. Undressing order, contact rules and waste steps are written into procedure and rehearsed with occupants.
Radiation checkpoint
A handheld survey meter is used in the transition zone; readings above threshold trigger a repeat of the process.
Frequently Asked Questions
- Do small shelters need decontamination?
- Yes. The volume shrinks, but the dirty–clean separation principle does not change; compact airlock solutions are used.
- What happens to contaminated clothing?
- It is sealed in bags and held in a separate storage volume, never entering the living area.
Related pages
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