Occupational Internal Dosimetry

Course Title:

Occupational Internal Dosimetry

Course duration:

5 days



Course Summary

Please contact us at AcademyRegistrar@nv5com with any questions This 5-day course teaches concepts and the practical application of internal dose calculations for radiation workers. Due to the current regulatory structure, concepts in the ICRP 26/30 system are emphasized, and updates in ICRP publications 60+ and 103 are covered. ICRP models for inhalation, ingestion, and wounds, along with systemic models for distribution and retention are discussed. Related topics such as air sampling and bioassay are covered in detail, along with applications to specific types of facilities where intakes of radionuclides may occur.

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Please contact us at AcademyRegistrar@nv5com with any questions

All conceptual bases and application details for ICRP internal dosimetry models for radiation works are described, with some practical calculational examples employed.

The ICRP 26/30 calculational framework is described and explained in detail, with examples. A brief review of the ICRP 2 system, which was the basis of our radiation protection system for many years is provided, as well as descriptions of the ICRP 60+ and ICRP 103 calculations and models (which have superseded ICRP 26/30, but not completely been adopted into regulations) is provided.

The ICRP kinetic models for inhalation, ingestion and wound intake routes are described in detail. Systemic models describing the distribution and retention of radionuclides are covered, with several important examples emphasized. Models for other specific situations (e.g. bone/marrow) are also explained, as they relate to the internal dosimetry of different radionuclides.

The very important ancillary topics of air sampling in the workplace and worker bioassay are reviewed. Methods and technologies of in-vivo and in-vitro bioassay are given and calculational methods for interpretation of bioassay data are covered, with numerical examples.

NRC guidance and regulations for internal dose assessment are reviewed. Specific types of facilities (nuclear power plants, uranium facilities, research and medical facilities) are covered with experiences in each described. Dosimetry models for dose to the fetus are also covered, with a brief review of existing internal dosimetry computer codes.

Special topics such as treatment for internal contamination, medical internal dose calculations, and others may be discussed.


Safety professionals and health physicists with interest in internal dosimetry.

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