BS EN ISO 11929-1:2021 - Determination of Characteristic Limits for Ionizing Radiation Measurements

Discover the essential standard for professionals working with ionizing radiation measurements. The BS EN ISO 11929-1:2021 provides a comprehensive framework for determining the characteristic limits, including the decision threshold, detection limit, and limits of the coverage interval. This standard is crucial for ensuring accurate and reliable measurements in various applications involving ionizing radiation.

Key Features

• Standard Number: BS EN ISO 11929-1:2021
• Pages: 50
• Release Date: February 24, 2021
• ISBN: 978 0 539 14655 4
• Status: Standard

Comprehensive Coverage

This standard is meticulously designed to cover the fundamentals and elementary applications of determining characteristic limits in ionizing radiation measurements. It provides a detailed methodology for establishing the decision threshold, detection limit, and coverage interval limits, which are critical for ensuring the precision and accuracy of radiation measurements.

Why Choose BS EN ISO 11929-1:2021?

For professionals in the field of radiation measurement, having a reliable and standardized method for determining characteristic limits is indispensable. The BS EN ISO 11929-1:2021 standard offers:

• Reliability: Ensures consistent and accurate measurement results.
• Compliance: Aligns with international standards, facilitating global acceptance and application.
• Expert Guidance: Developed by leading experts in the field, providing authoritative guidance on measurement techniques.

Applications

The BS EN ISO 11929-1:2021 standard is applicable across a wide range of industries and sectors where ionizing radiation measurements are critical. These include:

• Healthcare: Ensuring accurate dosimetry in medical imaging and radiation therapy.
• Nuclear Industry: Monitoring and controlling radiation levels in nuclear facilities.
• Environmental Monitoring: Assessing radiation levels in the environment to ensure public safety.
• Research and Development: Supporting scientific research that involves ionizing radiation.

Structure and Content

With 50 pages of in-depth content, the BS EN ISO 11929-1:2021 standard is structured to provide clear and concise information. It includes:

• Introduction: Overview of the standard's purpose and scope.
• Methodology: Detailed procedures for determining characteristic limits.
• Applications: Practical examples and case studies illustrating the standard's application.
• Annexes: Additional resources and references for further reading.

Stay Ahead with the Latest Standards

Released on February 24, 2021, the BS EN ISO 11929-1:2021 is the latest iteration of this essential standard, reflecting the most current practices and technological advancements in the field of ionizing radiation measurement. By adopting this standard, you ensure that your practices are up-to-date and in line with the latest industry requirements.

Conclusion

The BS EN ISO 11929-1:2021 standard is an invaluable resource for anyone involved in the measurement of ionizing radiation. Its comprehensive approach to determining characteristic limits ensures that you can achieve the highest levels of accuracy and reliability in your measurements. Whether you are in healthcare, the nuclear industry, environmental monitoring, or research, this standard provides the guidance you need to excel in your field.

Equip yourself with the knowledge and tools provided by the BS EN ISO 11929-1:2021 standard and ensure that your ionizing radiation measurements meet the highest standards of precision and reliability.

BS EN ISO 11929-1:2021

This standard BS EN ISO 11929-1:2021 Determination of the characteristic limits (decision threshold, detection limit and limits of the coverage interval) for measurements of ionizing radiation. Fundamentals and application is classified in these ICS categories:

• 17.240 Radiation measurements

The ISO 11929 series specifies a procedure, in the field of ionizing radiation metrology, for the calculation of the “decision threshold”, the “detection limit” and the “limits of the coverage interval” for a non-negative ionizing radiation measurand when counting measurements with preselection of time or counts are carried out. The measurand results from a gross count rate and a background count rate as well as from further quantities on the basis of a model of the evaluation. In particular, the measurand can be the net count rate as the difference of the gross count rate and the background count rate, or the net activity of a sample. It can also be influenced by calibration of the measuring system, by sample treatment and by other factors.

ISO 11929 has been divided into four parts covering elementary applications in this document, advanced applications on the basis of the ISO/IEC Guide 3‑1 in ISO 11929‑2, applications to unfolding methods in ISO 11929‑3, and guidance to the application in ISO 11929‑4.

This document covers basic applications of counting measurements frequently used in the field of ionizing radiation metrology. It is restricted to applications for which the uncertainties can be evaluated on the basis of the ISO/IEC Guide 98‑3 (JCGM 2008). In Annex A, the special case of repeated counting measurements with random influences is covered, while measurements with linear analogous ratemeters are covered in Annex B.

ISO 11929‑2 extends the former ISO 11929:2010 to the evaluation of measurement uncertainties according to the ISO/IEC Guide 98‑3‑1. ISO 11929‑2 also presents some explanatory notes regarding general aspects of counting measurements and on Bayesian statistics in measurements.

ISO 11929‑3 deals with the evaluation of measurements using unfolding methods and counting spectrometric multi-channel measurements if evaluated by unfolding methods, in particular, for alpha- and gamma‑spectrometric measurements. Further, it provides some advice on how to deal with correlations and covariances.

ISO 11929‑4 gives guidance to the application of the ISO 11929 series, summarizes shortly the general procedure and then presents a wide range of numerical examples. Information on the statistical roots of ISO 11929 and on its current development may be found elsewhere^[33][34].

The ISO 11929 series also applies analogously to other measurements of any kind especially if a similar model of the evaluation is involved. Further practical examples can be found, for example, in ISO 18589^[1], ISO 9696^[2], ISO 9697^[3], ISO 9698^[4], ISO 10703^[5], ISO 7503^[6], ISO 28218^[7], and ISO 11665^[8].

NOTE A code system, named UncertRadio, is available for calculations according to ISO 11929‑1 to ISO 11929‑3. UncertRadio^[31][32] can be downloaded for free from https://www.thuenen.de/de/fi/arbeitsbereiche/meeresumwelt/leitstelle-umweltradioaktivitaet-in-fisch/uncertradio/. The download contains a setup installation file which copies all files and folders into a folder specified by the user. After installation one has to add information to the PATH of Windows as indicated by a pop‑up window during installation. English language can be chosen and extensive “help” information is available.