Personal dosimetry is an essential part of radiation dosimetry, used to measure the doses received by people exposed to radiation related to their work activities. These doses are usually measured with devices known as dosimeters, which record the absorbed radiation energy in gray (Gy) or the equivalent dose in sieverts (Sv). Personal dosimeters come in two types: external and internal. External dosimeters are worn on the surface of the body and record the radiation dose received from external sources.
Internal dosimeters measure the presence of nuclear substances in the body or by measuring nuclear substances excreted by the body. The most common type of personal dosimeter is an electronic personal dosimeter (EPD). This modern device can provide a continuous reading of the cumulative dose and current dose rate, and can alert the wearer when a specified dose rate or cumulative dose is exceeded. EPDs are generally more expensive, larger in size, and more versatile than other types of dosimeters such as quartz fiber plate and film types, thermoluminescent dosimeters (TLDs), and albedo dosimeters.
In most practical situations, dosimeters provide reasonable approximations to the personal dose equivalent, Hp (d), at least at the dosimeter location. Personnel neutron dosimetry remains one of the problems in the field of radiation protection, as no single method provides the combination of energy response, sensitivity, orientation dependency characteristics and accuracy necessary to meet the needs of a personnel dosimeter. The departmental dosimetry contact initiates and submits all requests for new, replacement and replacement dosimeters to Radiation Safety Services (RSS) and notifies RSS of personnel changes such as new or terminated personnel or updated personal information. In conclusion, personal dosimetry is an important part of radiation protection.
It is used to measure doses received by people exposed to radiation related to their work activities. There are two types of personal dosimetry: external and internal. External dosimeters are worn on the surface of the body and record radiation doses received from external sources. Internal dosimeters measure nuclear substances present in or excreted by the body.
The most common type of personal dosimeter is an electronic personal dosimeter (EPD), which can provide a continuous reading of cumulative dose and current dose rate, and alert the wearer when a specified dose rate or cumulative dose is exceeded.
