Strålningsmätning

Kommittébeteckning: SIS/TK 424 (Kemiska vattenundersökningar)
Källa: CEN
Svarsdatum: den 18 feb 2019
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ISO 13163 specifies the determination of lead-210 (210Pb) activity concentration in samples of all types of water using liquid scintillation counting (LSC). For raw and drinking water, the sample should be degassed in order to minimize the ingrowth of 210Pb from radon-222 (222Rn).

Using currently available liquid scintillation counters, this test method can measure the 210Pb activity concentrations in the range of less than 20 mBq⋅l-1 to 50 mBq⋅l-1. These values can be achieved with a counting time between 180 min and 720 min for a sample volume from 0,5 l to 1,5 l.

Higher 210Pb activity concentrations can be measured by either diluting the sample or using smaller sample aliquots or both.

It is the laboratory’s responsibility to ensure the suitability of this test method for the water samples tested.

Ämnesområden: Strålningsmätning
Kommittébeteckning: SIS/TK 405 (Kärnenergi)
Källa: ISO
Svarsdatum: den 8 mar 2019
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The purpose of this document is to provide minimum criteria required for quality assurance and quality control, evaluation of the performance and to facilitate the comparison of measurements related to absorbed dose estimation obtained in different laboratories applying ex vivo X-band EPR spectroscopy with human tooth enamel.

This document covers the determination of absorbed dose in tooth enamel (hydroxyapatite). It does not cover the calculation of dose to organs or to the body.

This document addresses:

1) Responsibilities of the customer and laboratory;

2) Confidentiality and ethical considerations;

3) Laboratory safety requirements;

4) The measurement apparatus;

5) Preparation of samples;

6) Measurement of samples and EPR signal evaluation;

7) Calibration of EPR dose response;

8) Dose uncertainty and performance test;

9) Quality assurance and control.