In everyday life, people are affected by natural radioactive radiation. Its level is not the same in different places and depends on many factors, namely: the presence of mountainous terrain, underground rocks, altitude above sea level, the presence of concrete, etc. In comparison, natural radiation has a stable state of nuclei without the addition of excess mass of matter. In the event of a crash, people may become subject to both internal and external radiation exposure.
External action occurs when radioactive particles/radiation come from outside and penetrate the skin. Internal effects occur when radioactive particles enter the human body through the respiratory tract and digestive system.
The cancellation of radioactive effects depends on many factors: on the area of ​​infection, from which part of the body the radiation acted, on the type of radioactive radiation, on the power and nature of the radiation. Sources of radiation can be: alpha particles, - beta particles, gamma radiation.
Physical properties of ionizing radiation
Type of radiation: Alpha
Radiation energy, MeV -1 - 10
Speed ​​in vacuum km/s -20000
The length of the run in the air is up to 20 cm.
The run length in fabric is up to 5 µm.
Type of infection – internal

Type of radiation: Beta
Radiation energy, MeV - 0.1 - 2
Speed ​​in vacuum km/s –270,000
The length of the run in the air is up to 15m.
Run length in fabric – Up to 1 cm.
Type of infection – external,

Type of radiation:
Radiation energy, MeV - 0.1 -20
Speed ​​in vacuum km/s –300,000
Distance in the air –> 100 m
Run length in fabric – > 10cm
Type of infection – external,

Immediate consequences of radioactive infection occur rarely, an exception may be a radiation disaster when a person is very close to the source of radiation. The consequence of this is “acute radiation sickness,” which can lead to death.
The most sensitive to radiation effects are the thyroid gland, bone marrow, lungs, skin, and stomach. Not all people exposed to radiation will become ill after a certain period. By using protective equipment, the risk of radioactive contamination can be significantly reduced.
The question of the possibility of long-term and delayed consequences (for example, cancer) from exposure to small doses of radiation still remains an open topic for discussion. Adequate protective measures can provide evidence of prevention of these complications.