scope:

Scope and object

This Technical Report gives guidelines for the application of the uncertainty analysis according to the Guide to the Expression of Uncertainty in Measurement (GUM) for measurements covered by standards of IEC Subcommittee 45B (SC 45B). It does not include the uncertainty associated with the concept of the measuring quantity, e. g., the difference between H_p(10) on the ISO water slab phantom and on the person. It is restricted to measurements of a single quantity consisting of only one value. Therefore, it is for example, not applicable to spectrometric measurements.

This Technical Report explains the principles of the GUM and the special considerations necessary for radiation protection at an example taken from individual dosimetry of external radiation, for example the daily measurement of the dose to the individual. In the informative annexes, several examples are given for the application on instruments, for which SC 45B has developed standards. This Technical Report shall assist the understanding of the GUM and other papers on uncertainty analysis. It cannot replace these papers nor can it provide the background and justification of the arguments leading to the concept of the GUM.

This Technical Report provides a variety of examples for the determination of the uncertainty, but none of the methods, probability density distributions or values given are exclusive. The relevant document is the GUM, therefore any other method, probability density distribution or value in line with the GUM is applicable for the determination of the uncertainty.