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IEC 61331-1:2014

(Main)

Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials

Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials

IEC 61331:2014 applies to materials in sheet form used for the manufacturing of protective devices against X-radiation of radiation qualities generated with X-ray tube voltages up to 400 kV and gamma radiation emitted by radionuclides with photon energies up to 1,3 MeV. This Part 1 is not intended to be applied to protective devices when these are to be checked for the presence of their attenuation properties before and after periods of use. This Part 1 specifies the methods of determining and indicating the attenuation properties of the materials. The attenuation properties are given in terms of:
- attenuation ratio;
- build-up factor; and
- attenuation equivalent together with, as appropriate, an indication of homogeneity and mass per unit area. Ways of stating values of attenuation properties in compliance with this part of the International Standard are included. Excluded from the scope of this International Standard are the methods for periodical checks of protective devices, particularly of protective clothing, the methods of determining attenuation by layers in the radiation beam, and the methods of determining attenuation for purposes of protection against ionizing radiation provided by walls and other parts of an installation. This second edition cancels and replaces the first edition of IEC 61331-1, published in 1994. It constitutes a technical revision. This second edition has been adapted to apply to the present technology. In particular, this second edition is consistently applicable to lead- and non-lead-containing materials. The essential changes and extensions are:
- the extension of the scope to cover photon-emitting radionuclides;
- improved methods to determine the attenuation ratio;
- the addition of the so-called inverse broad beam condition;
- the addition of a method to calculate the attenuation ratio of photon-emitting radionuclides;
- the definition of new standard X- and gamma radiation qualities used for testing;
- the addition of the so-called lead equivalent class; and
- tables of attenuation ratios, build-up factors and first half-value layers for the standard radiation qualities filtered with different thicknesses of lead.

Dispositifs de protection radiologique contre les rayonnements X pour diagnostic médical - Partie 1: Détermination des propriétés d'atténuation des matériaux

L'IEC 61331:2014 s'applique aux matériaux en plaques utilisés pour la fabrication des dispositifs de protection radiologique contre les rayonnements X dont les qualités de rayonnement sont celles générées avec des hautes tensions radiogènes allant jusqu'à 400 kV et les rayonnements gamma émis par des radionucléides ayant une énergie photonique égale au plus à 1,3 MeV. La présente Partie 1 n'est pas prévue pour être appliquée aux dispositifs de protection radiologique lorsqu'il doit être procédé à la vérification de leurs propriétés d'atténuation avant et après les périodes d'utilisation. La présente Partie 1 spécifie les méthodes de détermination et d'indication des propriétés d'atténuation des matériaux. Les propriétés d'atténuation sont indiquées dans les termes suivants:
- indice d'atténuation;
- facteur d'accumulation; et
- équivalent d'atténuation, avec, selon le cas, une indication d'homogénéité et de masse surfacique. Les manières d'énoncer les valeurs des propriétés d'atténuation en conformité avec la présente partie de la Norme internationale sont incluses. Les méthodes suivantes sont exclues du domaine d'application de la présente Norme internationale:
- les méthodes relatives aux vérifications périodiques des dispositifs de protection radiologique, en particulier des vêtements de protection radiologique;
- les méthodes de détermination de l'atténuation procurée par les couches dans le faisceau de rayonnement, et les méthodes de détermination de l'atténuation à des fins de protection contre les rayonnements ionisants procurée par les murs et autres parties structurelles d'une installation.

General Information

Status
Published
Publication Date
06-May-2014
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
11.040.50 - Radiographic equipment
Technical Committee
SC 62B - Medical imaging equipment, software, and systems
Drafting Committee
MT 47 - TC 62/SC 62B/MT 47
Current Stage
PPUB - Publication issued
Start Date
31-May-2014
Completion Date
07-May-2014
Ref Project

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IEC 61331-1:2014 - Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materialsIEC 61331-1:2014 - Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials
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IEC 61331-1:2014 - Protective devices against diagnostic medical X-radiation - Part 1: Determination of attenuation properties of materials
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IEC 61331-1
®

Edition 2.0 2014-05
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE


Protective devices against diagnostic medical X-radiation –
Part 1: Determination of attenuation properties of materials

Dispositifs de protection radiologique contre les rayonnements X pour
diagnostic médical –
Partie 1: Détermination des propriétés d’atténuation des matériaux

IEC 61331-1:2014-05(en-fr)

---------------------- Page: 1 ----------------------
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