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ASTM E1707

Standard Guide for Estimating Uncertainties in Dosimetry for Radiation Processing

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Organization: ASTM
Publication Date: 15 May 1995
Status: inactive
Page Count: 20
ICS Code (Radiation measurements): 17.240
scope:

1. Scope

1.1 This guide defines possible sources of error in dosimetry performed in gamma, x-ray (bremsstrahlung) and electron irradiation facilities and offers procedures for estimating the resulting magnitude of the uncertainties in the measurement results. Basic concepts of measurement, estimate of the measured value of a quantity, "true" value, error and uncertainty are defined and discussed. Components of uncertainty are discussed and methods are given for evaluating and estimating their values. How these contribute to the standard uncertainty in the reported values of absorbed dose are considered and methods are given for calculating the combined standard uncertainty and an estimate of overall (expanded) uncertainty. The methodology for evaluating components of uncertainty follows ISO procedures (see section 2.3). The traditional concepts of precision and bias are not used. Examples are given in five appendixes.

1.2 This guide assumes a working knowledge of statistics. Several statistical texts are included in the references (1, 2, 3, 4).

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Document History

ASTM E1707
May 15, 1995
Standard Guide for Estimating Uncertainties in Dosimetry for Radiation Processing
1. Scope 1.1 This guide defines possible sources of error in dosimetry performed in gamma, x-ray (bremsstrahlung) and electron irradiation facilities and offers procedures for estimating the...

References

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