Revision of the ICRP dosimetric model for the human respiratory tract

Conference · Sat Dec 01 04:00:00 EST 1990

OSTI ID:6319943

Bair, W J

Although the dosimetric model of the respiratory tract used in ICRP Publication 30 had not been shown to be seriously deficient for the purpose of calculating Annual Limits on Intake (ALIs) for workers, the availability of new information led the ICRP in 1984 to create a special Task Group to review the dosimetric model of the respiratory tract and, if justified, propose revisions or a new model. The Task Group directed its efforts toward improving the model used in Publication 30 rather than developing a completely new model. The objective was a model that would facilitate calculation of biologically meaningful doses; be consistent with morphological, physiological, and radiobiological characteristics of the respiratory tract; incorporate current knowledge; meet all radiation protection needs; be user friendly by not being unnecessarily sophisticated; be adaptable to development of computer software for calculation of relevant radiation doses from knowledge of a few readily measured exposure parameters; be equally useful for assessment purposes as for calculating ALIs; be applicable to all members of the world population; and consider the influence of smoking, air pollutants, and diseases of the inhalation, deposition, and clearance of radioactive particles from the respiratory tract. The model provides for calculation of a committed dose equivalent for each region, adjusted for the relative cancer sensitivity of that region, and for the summing of these to yield a committed dose equivalent for the entire respiratory tract. 3 figs.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 6319943
• Report Number(s): PNL-SA-17594; CONF-891290--2; CONF-900733--1; ON: DE91005086
• Country of Publication: United States
• Language: English

Related Subjects

560161* -- Radionuclide Effects
Kinetics
& Toxicology-- Man
61 RADIATION PROTECTION AND DOSIMETRY
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
655001 -- Medical Physics-- Radiation Protection Standards
AEROSOLS
ANIMALS
ANNUAL LIMIT OF INTAKE
BIOLOGICAL MODELS
CLEARANCE
COLLOIDS
DISEASES
DISPERSIONS
DOSE EQUIVALENTS
DOSE LIMITS
DOSES
DOSIMETRY
EXCRETION
HAZARDS
HEALTH HAZARDS
ICRP
INHALATION
INTAKE
INTERNATIONAL ORGANIZATIONS
LUNG CLEARANCE
MAMMALS
MAN
NEOPLASMS
PERSONNEL
PRIMATES
RADIATION DOSES
RADIATION PROTECTION
RADIOACTIVE AEROSOLS
RADIOINDUCTION
RESPIRATORY SYSTEM
SAFETY STANDARDS
SOLS
STANDARDS
VERTEBRATES