International Organization for Standardization (ISO)
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ISO 27048:2011
Scope
This International Standard specifies the minimum requirements for the evaluation of data from the monitoring
of workers occupationally exposed to the risk of internal contamination by radioactive substances. It presents
procedures and assumptions for the standardised interpretation of monitoring data, in order to achieve
acceptable levels of reliability. Those procedures allow the quantification of exposures for the documentation
of compliance with regulations and radiation protection programmes. Limits are set for the applicability of the
procedures in respect of the dose levels above which more sophisticated methods will have to be applied.
This International Standard addresses the following:
a) procedures for dose assessment based on reference levels for routine and special monitoring
programmes;
b) assumptions for the selection of dose-critical parameter values;
c) criteria for determining the significance of monitoring results;
d) interpretation of workplace monitoring results;
e) uncertainties arising from sampling, measurement techniques and working conditions;
f) the special topics of
1) interpretation of multiple data arising from different measurement methods at different times,
2) handling data below the decision threshold,
3) rogue data, and
4) calculation of doses to the embryo/foetus and infant;
g) reporting/documentation;
h) quality assurance.
It is not applicable to the following:
- dosimetry for litigation cases;
- modelling for the improvement of internal dosimetry;
- the potential influence of decorporation measures (e.g. administration of chelating agents);
- the investigation of the causes or implications of an exposure;
- dosimetry for contaminated wounds.
ISO 27048:2011 Referenced Document
ISO 20553:2006 Radiation protection - Monitoring of workers occupationally exposed to a risk of internal contamination with radioactive material
ISO 28218 Radiation protection - Performance criteria for radiobioassay
ISO 5725-1 Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions*， 2023-07-01 Update
ISO 5725-2 Accuracy (trueness and precision) of measurement methods and results — Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method*， 2019-12-06 Update
ISO 5725-3 Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate precision and alternative designs for collaborative studies*， 2023-06-01 Update
ISO/IEC Guide 98-3 Uncertainty of measurement - Guide to the expression of uncertainty in measurement (GUM:1995). Extension to any number of output quantities*， 2011-11-09 Update