Uncertainties in cancer risk coefficients for environmental exposure to radionuclides : an uncertainty analysis for risk coefficients reported in Federal Guidance Report No. 13 / c D.J. Pawel [and others].

Format:

Book

Government document

Contributor:

Pawel, D. J.

United States. Environmental Protection Agency. Office of Air and Radiation

Oak Ridge National Laboratory

Language:

English

Subjects (All):

Radioisotopes in the body--Measurement.

Radioisotopes in the body.

Radioisotopes--Safety measures.

Radioisotopes.

Radioisotopes--Physiological effect.

Radiation--Safety measures.

Radiation.

Cancer--Environmental aspects--United States.

Cancer.

Cancer--Environmental aspects.

United States.

Radiation Protection.

Medical Subjects:

Radiation Protection.

Physical Description:

1 online resource (xiv, 132 pages)

Other Title:

Uncertainty analysis for risk coefficients reported in Federal Guidance Report No. 13

Place of Publication:

Oak Ridge, Tenn. : Oak Ridge National Laboratory, 2007.

Summary:

Federal Guidance Report No. 13 (FGR 13) provides risk coefficients for estimation of the risk of cancer due to low-level exposure to each of more than 800 radionuclides. Uncertainties in risk coefficients were quantified in FGR 13 for 33 cases (exposure to each of 11 radionuclides by each of three exposure pathways) on the basis of sensitivity analyses in which various combinations of plausible biokinetic, dosimetric, and radiation risk models were used to generate alternative risk coefficients. The present report updates the uncertainty analysis in FGR 13 for the cases of inhalation and ingestion of radionuclides and expands the analysis to all radionuclides addressed in that report. The analysis indicates that most risk coefficients for inhalation or ingestion of radionuclides are determined within a factor of 5 or less by current information. That is, application of alternate plausible biokinetic and dosimetric models and radiation risk models (based on the linear, no-threshold hypothesis with an adjustment for the dose and dose rate effectiveness factor) is unlikely to change these coefficients by more than a factor of 5. In this analysis the assessed uncertainty in the radiation risk model was found to be the main determinant of the uncertainty category for most risk coefficients, but conclusions concerning the relative contributions of risk and dose models to the total uncertainty in a risk coefficient may depend strongly on the method of assessing uncertainties in the risk model.

Notes:

Title from title screen (viewed May 17, 2007).

"This work was sponsored by the Office of Radiation and Indoor Air, U.S. Environmental Protection Agency, under Interagency Agreement DOE No. 1824-S581-A1, under contract DE-AC05-84OR21400 with UT-Battelle."

"January 2007."

"ORNL/TM-2006/583."

Includes bibliographical references (pages 124-131).

OCLC:

130927164