Lung-clearance classification of 241 Am and 238 -240 Pu in dust collected near the sites of Hanford Incidents 2827 and 2828
Dust samples containing /sup 241/Am and /sup 238 -240/Pu were obtained from sites near the occurrences of Hanford Incidents 2827 and 2828, and the alpha-activity ratios of /sup 241/Am//sup 239 -240/Pu were found to be 215 and 1.7, respectively. The latter sample was also found to have a /sup 238/Pu//sup 239 -240/Pu alpha-activity ratio of 0.033. The dissolution rates of these radionuclides into simulated lung fluid at 37/sup 0/C were measured over a period of 10 days, and these measurements were used to classify the samples in terms of the lung clearance model proposed by the International Commission on Radiological Protection. The results showed that less than 0.02% of the /sup 239 -240/Pu in both samples and less than 0.02% of the /sup 238/Pu in the sample from Incident 2828 had dissolved in 10 days. Only 0.01% of the /sup 241/Am in the sample from Incident 2827 and 0.27% of the /sup 241/Am in the sample from Incident 2828 dissolved during this time period. It is recommended that the /sup 241/Am and /sup 239 -240/Pu components in both of these samples be considered 100% Y-type compounds for calculations with the ICRP Lung Clearance Model.
- Research Organization:
- Battelle Pacific Northwest Labs., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 6459919
- Report Number(s):
- PNL-3716; ON: DE81028258
- Country of Publication:
- United States
- Language:
- English
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560171* -- Radiation Effects-- Nuclide Kinetics & Toxicology-- Man-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTIVITY LEVELS
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
BIOLOGICAL HALF-LIFE
BODY
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CLEARANCE
DISSOLUTION
DUSTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HANFORD RESERVATION
HEAVY NUCLEI
ICRP
INTERNATIONAL ORGANIZATIONS
ISOTOPES
LUNGS
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PLUTONIUM 238
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIOISOTOPES
RESPIRATORY SYSTEM
US DOE
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTIVITY LEVELS
ALPHA DECAY RADIOISOTOPES
AMERICIUM 241
AMERICIUM ISOTOPES
BIOLOGICAL HALF-LIFE
BODY
CLASSIFICATION
CLEARANCE
DISSOLUTION
DUSTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HANFORD RESERVATION
HEAVY NUCLEI
ICRP
INTERNATIONAL ORGANIZATIONS
ISOTOPES
LUNGS
NATIONAL ORGANIZATIONS
NUCLEI
ODD-EVEN NUCLEI
ORGANS
PLUTONIUM 238
PLUTONIUM 239
PLUTONIUM 240
PLUTONIUM ISOTOPES
RADIOISOTOPES
RESPIRATORY SYSTEM
US DOE
US ERDA
US ORGANIZATIONS
YEARS LIVING RADIOISOTOPES