Radiation Hazard Classes of Work

Radiation hazard classes of work are groups into which work with open sources of ionizing radiation is divided when classified according to the degree of potential danger of internal exposure. Belonging to a certain radiation hazard class of work is determined depending on the radiation hazard group of the substance and its quantity in the workplace.

The following classes of radiation hazard of work are distinguished:

Class 1 - work with maximum quantities of especially dangerous radioactive substances of group I.

Class 2 - work with significant quantities of especially dangerous radioactive substances of group I.

Class 3 - work with small quantities of especially dangerous radioactive substances of group I; work with significant quantities of hazardous radioactive substances of group II.

Class 4 - work with small quantities of hazardous radioactive substances of group II; work with significant quantities of moderately hazardous radioactive substances of group III.

Class 5 - work with small quantities of moderately hazardous radioactive substances of group III.

Thus, the radiation hazard class of work depends on the group of radioactive substance with which work is carried out and on its quantity. The higher the hazard class, the more stringent the requirements for the organization of radiation protection of personnel and the public.

Radiation hazard classes of work (K.r.o.r.) are groups into which work using open sources of ionizing radiation is divided for classification according to the degree of potential internal exposure. Belonging to a specific K. r. O. R. depends on the hazard group of the radioactive substance and its quantity in the workplace.

Classification of work on radiation safety is carried out in order to determine the degree of danger to the health of workers and the population. Depending on the radiation hazard class, work may be carried out with certain restrictions or prohibited altogether.

K.r. O. R. assigned in accordance with regulatory documents, such as GOST 12.1.002-2015 “System of occupational safety standards. Terms and definitions”, Sanitary Rules and Norms (SanPiN) and others.

When determining the radiation hazard class, many factors are taken into account, including the type of radiation source, its activity, distance to the source, duration of work, etc. The possible consequences of internal exposure of workers, such as cancer, radiation sickness and others, are also taken into account.

Depending on the radiation hazard class, work can be divided into several groups. For example, when working with radioactive substances, the hazard class can be from 1 to 7. The higher the class, the more dangerous the radiation source and the more restrictions on working with it.

Radiation hazard classes can be used to determine the need to use personal protective equipment, such as special suits, masks, goggles, etc. They can also influence the requirements for the organization of the workplace, for example, the distance from the radiation source, the presence of special protective screens, etc.

Thus, the classification of work by radiation hazard is an important tool for ensuring the safety of workers and the public when working with sources of ionizing radiation. It allows you to determine the extent of the potential threat from internal exposure and take appropriate measures to minimize it.