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

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Respiratory protective devices — Performance requirements —Part 2: Requirements for filtering RPD是国际标准化组织(International Organization for Standardization，简称ISO)发布的ISO标准，适用于国际范围。

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INTERNATIONAL STANDARD ISO 17420-2:2021(E)

Respiratory protective devices — Performance requirements —

Part 2: Requirements for filtering RPD

1 Scope

This document specifies requirements for the performance and testing of filtering 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.

Requirements for RPD elements and components are also specified in this document.

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 9227, Corrosion tests in artificial atmospheres — Salt spray tests

ISO 16900-1:2019, Respiratory  protective  devices  —  Methods  of  test  and  test  equipment  —  Part  1: 

Determination of inward leakage

ISO 16900-2, Respiratory protective devices — Methods of test and test equipment — Part 2: Determination 

of breathing resistance

ISO 16900-3, Respiratory protective devices — Methods of test and test equipment — Part 3: Determination 

of particle filter penetration

ISO 16900-4:2011, Respiratory  protective  devices  —  Methods  of  test  and  test  equipment  —  Part  4: 

Determination of gas filter capacity and migration, desorption and carbon monoxide dynamic testing

ISO 16900-5, Respiratory protective devices — Methods of test and test equipment — Part 5: Breathing 

machine, metabolic simulator, RPD headforms and torso, tools and verification tools

1)

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 16900-8, Respiratory protective devices — Methods of test and test equipment — Part 8: Measurement 

of RPD air flow rates of assisted filtering RPD

ISO 16900-9, Respiratory protective devices — Methods of test and test equipment — Part 9: Determination 

of carbon dioxide content of the inhaled gas

ISO 16900-12, Respiratory  protective  devices  —  Methods  of  test  and  test  equipment  —  Part  12: 

Determination of volume-averaged work of breathing and peak respiratory pressures

1) Under preparation, Stage at the time of publication ISO/DIS 16900-6:2020.

ISO 17420-2:2021(E)

ISO 16900-14:2020, Respiratory  protective  devices  —  Methods  of  test  and  test  equipment  —  Part  14: 

Measurement of sound level

ISO 16972, Respiratory protective devices — Vocabulary and graphical symbols

ISO/TS 16973, Respiratory  protective  devices  --  Classification  for  respiratory  protective  device  (RPD), 

excluding RPD for underwater application

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

ISO 17420-3, Respiratory protective devices — Performance requirements — Part 3: Thread connection

IEC 61000-6-2, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards — Immunity standard 

for industrial environments

3 Terms, definitions, abbreviations and symbols

3.1 Terms and definitions

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/o bp

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

non pre-conditioned state

without pre-conditioning but possibly modified to carry out tests or already used in non-destructive tests

Note 1 to entry: This includes e.g. cleaning and disinfection.

3.1.2

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)

Note 1 to entry: All of the various components [e.g. for an assisted filtering device: blower unit, battery, respiratory interface (RI), filters, etc.] have been completely assembled and then connected (RI connected to the hose of the blower unit) together in accordance with the information supplied by the manufacturer.

3.1.3

ready for assembly state

RPD or components with seals, plugs or other environmental protective means, still in place ready to be assembled and/or donned

Note 1 to entry: RPD or components can remain sealed and plugged until donning if so stated in the information supplied by the manufacturer.

3.1.4

integrated RPD

RPD designed so that components in the breathable gas supply chain are nonseparable

3.1.5

measured maximum flow rate

volumetric flow rate of an assisted filtering RPD, determined in a laboratory test, when the RPD is in the condition which results in the highest air flow rate, where this condition takes into account the influences of temperatures, settings of RPD, pre-conditionings, use of accessories and any other related factors

[SOURCE: ISO 16900-8:2015, 3.6]

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