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  • BSI
    PD CEN ISO/TR 22930-2:2021 Evaluating the performance of continuous air monitors - Air monitors based on flow-through sampling techniques without accumulation
    Edition: 2021
    $418.55
    / user per year

Description of PD CEN ISO/TR 22930-2:2021 2021

The use of a continuous air monitor (CAM) is mainly motivated by the need to be alerted quickly and in the most accurate way possible with an acceptable false alarm rate when significant activity concentration value is exceeded, in order to take appropriate measures to reduce exposure of those involved.

The performance of this CAM does not only depend on the metrological aspect characterized by the decision threshold, the limit of detection and the measurement uncertainties but also on its dynamic capacity characterized by its response time as well as on the minimum detectable activity concentration corresponding to an acceptable false alarm rate.

The ideal performance is to have a minimum detectable activity concentration as low as possible associated with a very short response time, but unfortunately these two criteria are in opposition. It is therefore important that the CAM and the choice of the adjustment parameters and the alarm levels be in line with the radiation protection objectives.

This document describes

  • the dynamic behaviour and the determination of the response time,

  • the determination of the characteristic limits (decision threshold, detection limit, limits of the coverage interval), and

  • a possible way to determine the minimum detectable activity concentration and the alarms setup.

Finally the annexes of this document show actual examples of CAM data which illustrate how to quantify the CAM performance by determining the response time, the characteristics limits, the minimum detectable activity concentration and the alarms setup.



Standard NumberPD CEN ISO/TR 22930-2:2021
TitleEvaluating the performance of continuous air monitors - Air monitors based on flow-through sampling techniques without accumulation
StatusDefinitive
Publication Date2021-09-07
Identical National Standard OfISO/TR 22930-2:2020, CEN ISO/TR 22930-2:2021
CorrectsPD ISO/TR 22930-2:2020
DescriptorsClassification systems, Gas-resistance tests, Tear tests, Radiation protection, Abrasion-resistant materials, Visors, Performance, Protective clothing, Protective suits, Splitting tests, Contamination, Wear resistance, Gas flow, Air, Testing conditions, Leak tests, Design, Occupational safety, Industrial overalls, Marking, Radioactive materials, Seams, Performance testing, Strength of materials, Chemical-resistance tests, Protective coatings, Particulate air pollutants, Watertightness tests, Dust-tightness tests, Flow measurement, Perforating tests, Breathing apparatus, Instructions for use, Clothing
ICS13.280 Radiation protection
CommitteeNCE/2
ISBN978 0 539 17590 5
PublisherBSI
Pages42

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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