Work Item
ASTM WK84155

New Guide for Analysis of Calibration Data for Nuclear Instruments

1. Scope

1. This guide describes mathematical and statistical techniques for efficiency calibrations of nuclear instruments using radioactive sources. It includes the calculation of the calibration parameters, evaluation and use of their uncertainties and covariances, and testing of the calibration data for outliers and overall lack of fit. It also provides guidelines for summarizing and reporting the results of a calibration. 2. The instrument counting efficiency is assumed to be independent of the radiation emission rate.
3. Guidance is provided for both single-point calibrations and calibration curves.
4. The guidance presumes the existence of measurement uncertainty models to provide statistical weighting factors for the calibration data.
5. This guide does not cover calibrations involving physically based computer simulations.


radioanalysis; radiochemistry; calibration; uncertainty


The guide promotes completeness and consistency in the data analysis for calibration of nuclear instruments. It is intended primarily for data analysts and software developers who support radiation measurement laboratories, and secondarily for instrument operators and sample analysts who use the calibration results.

The title and scope are in draft form and are under development within this ASTM Committee.


Developed by Subcommittee: D19.04

Committee: D19

Staff Manager: Brian Milewski

Work Item Status

Date Initiated: 11-10-2022

Technical Contact: Keith McCroan

Item: 000