Radiation Protection

Radiation protection relies on time, distance and shielding. In suspected contamination, the most effective steps are simple: get inside, stay inside, and follow official instructions.

Shelter first, details second

If contamination is possible, do not linger outside to “check”. Reduce exposure and decontaminate.

Radiation types in plain language

Different radiation types penetrate differently, which changes how you protect yourself.

Alpha: not through skin, dangerous if inhaled/ingested.
Beta: shallow penetration; skin/eye protection matters.
Gamma: highly penetrating; shielding mass is key.

The three pillars

Basic physics that works everywhere:

Time: minimize time exposed.
Distance: move deeper indoors and away from the source.
Shielding: add dense mass between you and outdoors.

Shielding

Concrete, earth, brick and water are practical shielding materials in buildings. More dense mass between you and outdoors generally means lower exposure.

Decontamination (after going indoors)

Most contamination is removed by taking off clothing and washing skin.

Remove outer clothing and seal it in a bag, away from living areas.
Wash skin with soap and water; avoid harsh scrubbing.
Wash hair with shampoo; avoid conditioner that may bind particles.
Put on clean clothes and limit dust spread indoors.

Potassium iodide (KI)

KI only protects the thyroid from radioactive iodine. It does not protect against other isotopes or external radiation. Use only when instructed by authorities/medical guidance.

Detection and decisions

Official instructions are primary. Instruments can help but don't replace guidance.

If you have a meter, use it per manual and log readings.
Do not go outside “to check” unless necessary.
Prioritize sheltering and dust control indoors.

Radiation Protection