Modelling approaches for estimating derived intervention levels in foods
Conference
·
OSTI ID:5750745
This paper presents an overview of the procedures and steps required when using mathematical models to simulate environmental systems to establish derived intervention levels (DILs) in foods. After determining an acceptable level of risk, the most important model parameters for calculating DILs are risk conversion factors, dose conversion factors for a unit ingestion of a given radionuclide, consumption rates of different food types, and the ratio of the peak activity in food to the time-integrated concentration in food (annual or lifetime). Terrestrial and aquatic foodchain transport models are only needed to establish secondary DILs for the deposition on land or the concentration of a radionuclide in animal feed and fodder. The derivation of the Protective Action Guides (PAGs) is reviewed, and values are given for both emergency and preventive PAGs for I-131, Sr-89, Sr-90, Cs-134, and Cs-137. Explicit estimates of uncertainty are also recommended as attempts are made to produce model predictions that are realistic rather than conservatively biased. Examples from an international model validation exercise (BIOMOVS) that is using data from the Chernobyl accident are also provided. 10 refs., 3 figs., 4 tabs.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5750745
- Report Number(s):
- CONF-8703207-1; ON: DE87013881
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560161* -- Radionuclide Effects
Kinetics
& Toxicology-- Man
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BODY FLUIDS
CHERNOBYLSK-3 REACTOR
CONTAMINATION
DAYS LIVING RADIOISOTOPES
DOCUMENT TYPES
DOSE EQUIVALENTS
DOSE LIMITS
DOSIMETRY
ENRICHED URANIUM REACTORS
ENVIRONMENTAL EXPOSURE PATHWAY
FOOD
GRAPHITE MODERATED REACTORS
INGESTION
INSTITUTIONAL FACTORS
INTAKE
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
LWGR TYPE REACTORS
MATERIALS
MATHEMATICAL MODELS
MILK
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
PERSONNEL DOSIMETRY
POWER REACTORS
RADIOACTIVITY
RADIOISOTOPES
REACTORS
REVIEWS
RISK ASSESSMENT
SAFETY STANDARDS
SOCIO-ECONOMIC FACTORS
STANDARDS
THERMAL REACTORS
US FDA
US HEW
US ORGANIZATIONS
WATER COOLED REACTORS
Kinetics
& Toxicology-- Man
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BODY FLUIDS
CHERNOBYLSK-3 REACTOR
CONTAMINATION
DAYS LIVING RADIOISOTOPES
DOCUMENT TYPES
DOSE EQUIVALENTS
DOSE LIMITS
DOSIMETRY
ENRICHED URANIUM REACTORS
ENVIRONMENTAL EXPOSURE PATHWAY
FOOD
GRAPHITE MODERATED REACTORS
INGESTION
INSTITUTIONAL FACTORS
INTAKE
INTERMEDIATE MASS NUCLEI
IODINE 131
IODINE ISOTOPES
ISOTOPES
LWGR TYPE REACTORS
MATERIALS
MATHEMATICAL MODELS
MILK
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
PERSONNEL DOSIMETRY
POWER REACTORS
RADIOACTIVITY
RADIOISOTOPES
REACTORS
REVIEWS
RISK ASSESSMENT
SAFETY STANDARDS
SOCIO-ECONOMIC FACTORS
STANDARDS
THERMAL REACTORS
US FDA
US HEW
US ORGANIZATIONS
WATER COOLED REACTORS