ISO 17420-1:2021 Respiratory protective devices — Performance requirements —Part 1: General

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Respiratory protective devices — Performance requirements —

Part 1: General

1 Scope

This document specifies general requirements for the performance and testing of respiratory protective devices (RPD) in accordance with their classification and for use in the workplace to protect the wearer from hazardous atmospheres and/or environments.

The requirements are based on human factors and are for complete respiratory systems.

Requirements for marking and information supplied by the RPD manufacturer are also included.

Additional requirements for special application such as fire services, marine, mining, abrasive blasting, welding and escape as well as RN (Radiological, Nuclear), CBRN (Chemical, Biological, Radiological, Nuclear) and CBRN Escape RPD are addressed in ISO 17420-5 to ISO 17420-9.

This document does not apply to respiratory devices for:

— underwater diving application;

— military application;

— use in aircraft and spacecraft;

— medical life support applications;

— resuscitators.

2 Normative references

The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 16900-1, Respiratory protective devices — Methods of test and test equipment — Part 1: Determination of inward leakage

ISO 16900-6, Respiratory protective devices — Methods of test and test equipment — Part 6: Mechanical resistance/strength of components and connections

ISO 16900-7:2020, Respiratory protective devices — Methods of test and test equipment — Part 7: Practical performance test methods

ISO 16900-10, Respiratory protective devices — Methods of test and test equipment — Part 10: Resistance to ignition, flame, radiant heat and heat

ISO 16900-11, Respiratory protective devices — Methods of test and test equipment — Part 11: Determination of field of vision

ISO 16972, Respiratory protective devices — Vocabulary and graphical symbols

ISO 17420-1:2021(E)

ISO 16975-3, Respiratory protective devices — Selection, use and maintenance — Part 3: Fit-testing procedures

ISO 17420-2:2021, Respiratory protective devices — Performance requirements — Part 2: Requirements for filtering RPD

ISO 17420-4:2021, Respiratory protective devices — Performance requirements — Part 4: Requirements for supplied breathable gas RPD

ISO 18526-1, Eye and face protection — Test methods — Part 1: Geometrical optical properties

3 Terms, d efinitions and abbreviations

3.1 Terms and definiti ons

For the purposes of this document, the terms and definitions given in ISO 16972 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https:// www. iso .org/ obp

— IEC Electropedia: available at http:// www.e lectropedia .org/ 3.1.1

RPD in as worn state

RPD where all components are connected and assembled in the way that it is intended to be used and worn (e.g. worn by the wearer, adapted to a RPD headform or RPD headform and torso or suitable holder)

3.2 Abbreviated terms

FMEA Failure Mode and Effects Analysis

RPD Respiratory protective devices

RI Respiratory Interface

4 Classific ation overview

4.1 General

The detailed classification and examples are described in ISO/TS 16973 and a condensed overview for RPD is given in Table 1.

All filtering RPD are classified based on their performances and their characteristics of the RI.

All supplied breathable gas RPD are classified based on their performance and the characteristic of the RI as well as their breathable gas capacity.

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