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BS ISO 9978:2020

BS ISO 9978:2020

$102.76

Radiation protection. Sealed sources. Leakage test methods

Published By Publication Date Number of Pages
BSI 2020 22
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This document specifies the different leakage test methods for sealed sources. It gives a comprehensive set of procedures using radioactive and non-radioactive means.

This document applies to the following situations:

  1. leakage testing of test sources following design classification testing in accordance with ISO 2919 [ 1 ];

  2. production quality control testing of sealed sources;

  3. periodic inspections of the sealed sources performed at regular intervals, during the working life.

Annex A of this document gives guidance to the user in the choice of the most suitable method(s) according to situation and source type.

It is recognized that there can be circumstances where special tests, not described in this document, are required.

It is emphasized, however, that insofar as production, use, storage and transport of sealed radioactive sources are concerned, compliance with this document is no substitute for complying with the requirements of the relevant IAEA regulations[ 17] and other relevant national regulations. It is also recognized that countries can enact statutory regulations which specify exemptions for tests, according to sealed source type, design, working environment, and activity (e.g., for very low activity reference sources where the total activity is less than the leakage test limit).

PDF Catalog

PDF Pages PDF Title
2 undefined
6 Foreword
8 Introduction
9 1 Scope
2 Normative references
3 Terms and definitions
11 4 Requirements
13 5 Test methods by radioactive means
5.1 Immersion tests
5.1.1 Immersion test (hot liquid)
5.1.2 Immersion test (boiling liquid)
14 5.1.3 Immersion test with a liquid scintillator
5.1.4 Immersion test at room temperature
5.1.5 Acceptance criteria
5.2 Gaseous emanation tests
5.2.1 Gaseous emanation test by absorption (for radium-226 sealed sources)
5.2.2 Gaseous emanation test by immersion with a liquid scintillator (for radium-226 sealed sources)
5.2.3 Gaseous emanation test (for krypton-85 sealed sources)
15 5.2.4 Other gaseous emanation tests
5.2.5 Acceptance criteria
5.3 Wipe tests
5.3.1 Wet wipe test
5.3.2 Dry wipe test
5.3.3 Acceptance criteria
6 Test methods by volumetric means
16 6.1 Helium mass spectrometer leakage tests
6.1.1 Helium test [equivalent to leak test type B6 in ISO 20485]
6.1.2 Helium pressurisation test [equivalent to leak test type B5 in ISO 20485]
17 6.1.3 Acceptance criteria
6.2 Bubble leakage tests
6.2.1 Vacuum bubble test [equivalent to immersion technique using vacuum in EN 1593[6]
6.2.2 Hot-liquid bubble test [equivalent to immersion technique using liquid at elevated temperature in EN 1593[6]
6.2.3 Gas pressurisation bubble test [equivalent to immersion technique using pressurisation of the object in EN 1593[6]
18 6.2.4 Liquid nitrogen bubble test
6.2.5 Acceptance criteria
6.3 Water pressurisation test
19 Annex A (informative) Guidance for the choice of the tests to be carried out according to purpose and sealed source type
21 Bibliography

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BS ISO 9978:2020
$102.76