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GB/T 41144-2021Requirements and test methods for ventilated protective clothing against radioactive aerosol (English PDF)

放射性气溶胶的通风防护衣要求与测试方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2021

Implementation date

July 1, 2022

Scope

GB/T 41144-2021 is the English-translated version of 放射性气溶胶的通风防护衣要求与测试方法.

GB/T 41144-2021 specifies the requirements and test methods for ventilated protective clothing against radioactive aerosols in China.

It covers isolated, air-supplied suits made of non-permeable material that are continuously fed with breathable air to keep a positive internal pressure, so that radioactive aerosols do not contaminate the body or reach the respiratory tract; powered air-filtering suits and other protective clothing are excluded.

The document defines radioactive aerosol and inward leakage, and sets out requirements and test methods drawing on Chinese standards for tear, seam and abrasion strength, flex damage, flammability and puncture resistance of the materials, together with marking.

Informative annexes describe how the protection factor and the field of view are tested. It is used by manufacturers and test laboratories. It was issued on 31 December 2021 and has applied since 1 July 2022.

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Document preview — GB/T 41144-2021

National Standard of the People's Republic of China

ICS: 13.340.10
Classification: C 57

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
1 Scope
2 Normative references
3 Terms and Definitions
4 Requirements
5 Test method
6 Logo
Appendix A (Informative) Protection Factor Test Method
Appendix B (Informative) Field of View Test
Reference

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1. Structure and Drafting Rules of Standardization Documents" drafted.

1 Scope

This document specifies requirements and test methods for ventilated protective clothing for radioactive aerosols.

This document applies to isolated air-supplied radioactive aerosol ventilation protective clothing. This document does not apply to powered air filter ventilation protective clothing and other protective clothing.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 3917.3 Tear properties of textile fabrics - Part 3. Determination of tear strength of trapezoidal specimens

GB/T 12586 Determination of flexural damage resistance of rubber or plastic coated fabrics

GB/T 13489 Determination of flammability of rubber-coated fabrics

GB/T 13773.1 Tensile properties of seams of textile fabrics and their products - Part 1. Determination of seam strength by strip method

GB/T 16556 Self-contained open circuit compressed air breathing apparatus

GB/T 20097 General requirements for protective clothing

GB/T 20655 Determination of mechanical properties of protective clothing and puncture resistance

GB/T 21196.2 Textiles - Determination of abrasion resistance of fabrics by Martindale method - Part 2. Determination of sample breakage

GB/T 23465 Practical performance evaluation of respiratory protective equipment

GB/T 24539 General technical requirements for chemical protective clothing for protective clothing

EJ435 Design, inspection, selection and use of protective clothing for radioactive contamination

3 Terms and Definitions

The following terms and definitions apply to this document.

3.1 Radioactive aerosol

A dispersion of solid or liquid microparticles containing radionuclides in air or other gases.

3.2 Radioactive aerosol ventilated protective clothing

Manufactured from non-permeable materials and continuously supplied with breathable air to maintain internal ventilation and positive pressure to prevent radioactive aerosols (3.1) Protective clothing that contaminates body surfaces and/or enters respiratory tract.

3.3 Inward leakage

Under the specified test conditions, the measured value of the aerosol reagent concentration in the protective clothing and the measurement of the aerosol reagent concentration in the test ambient air ratio of values.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 24539 · EJ435

Similar standards

GB/T 9953-2026|GB 13641-2025|GB 20097-2025|GB 23463-2025|GB 24536-2025|GB 24539-2025

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