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AS/NZS 17420.6:2022
$147.51
Respiratory protective devices — Performance requirements, Part 6: Special application escape — Filtering RPD and supplied breathable gas RPD (ISO 17420-6:2021, MOD)
AS/NZS 17420.6:2022 adopts and modifies ISO 17420 6:2021 which describes requirements for respiratory protective devices (RPD) including its elements and components used for special application for escape devices.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms, definitions and abbreviations
3.1 Terms and definitions
3.2 Abbreviated terms
4 Classification overview
4.1 General
4.2 Supplied breathable gas RPD for escape
4.3 Filtering RPD for escape
5 General requirements for RPD
6 Basic requirements for supplied breathable gas RPD and filtering RPD
7 Special application for supplied breathable gas escape RPD and filtering escape RPD
7.1 Special application escape RPD – Requirement matrices
7.1.1 General
7.1.2 Supplied breathable gas RPD — Escape
7.1.3 Filtering escape RPD
7.2 Requirements for special application escape RPD
7.2.1 Exposure to dust
7.2.2 Contact with hot or cold surfaces generated by the RPD
7.2.2.1 Contact with hot and cold surfaces – Supplied breathable gas escape RPD
7.2.2.2 Contact with hot surfaces – Filtering escape RPD
7.2.3 Avoidance of frictional sparks – Filtering escape RPD and supplied breathable gas escape RPD
7.2.4 Resistance to flame
7.2.4.1 Six burner dynamic – Filtering escape RPD and supplied breathable gas escape RPD
7.2.5 Mechanical Requirement
7.2.5.1 Connections
7.2.5.1.1 Connections to RI
7.2.5.1.2 Connections other than to the RI
7.2.6 Requirements for escape RPD used in explosive atmospheres and electromagnetic compatibility
7.2.6.1 General – Filtering escape RPD and supplied breathable gas escape RPD
7.2.6.2 Escape from fire – Filtering escape RPD and supplied breathable gas escape RPD
7.2.6.3 Mining – Filtering escape RPD and supplied breathable gas escape RPD
7.2.6.4 Marine – Supplied breathable gas escape RPD
7.2.7 Antistatic properties – Filtering escape RPD and supplied breathable gas escape RPD
7.2.7.1 General – Filtering escape RPD and supplied breathable gas escape RPD
7.2.7.2 Escape from fire – Filtering escape RPD and supplied breathable gas escape RPD
7.2.7.3 Mining – Filtering escape RPD and supplied breathable gas escape RPD
7.2.7.4 Marine – Supplied breathable gas escape RPD
7.2.7.5 Exposed RPD hoses – Filtering escape RPD and supplied breathable gas escape RPD
7.2.8 Eye irritation (external) – Filtering escape RPD and supplied breathable gas escape RPD
7.2.9 Determination of duration
7.2.9.1 General
7.2.9.2 Determination of duration, t, of supplied breathable gas escape RPD
7.2.9.2.1 Class T (tight fitting) RIs using compressed breathable gas
7.2.9.2.2 Class L (loose fitting) RIs using compressed breathable gas
7.2.9.2.3 Supplied breathable gas escape RPD not using compressed breathable gas
7.2.9.3 Determination of duration (t) of filtering escape RPD
7.2.9.3.1 Capacity of gas filters for unassisted and assisted escape RPD of class escape general
7.2.9.3.2 Designated duration (t) of assisted Escape filtering RPD of class escape general
7.2.10 Validation of escape RPD performance requirements
7.2.10.1 Supplied breathable gas escape RPD
7.2.10.1.1 General
7.2.10.1.2 Work of breathing and breathing resistance
7.2.10.1.3 CO2 concentration limits
7.2.10.1.4 Temperature and humidity of inhaled gas for regenerated breathable gas RPD escape and oxygen enriched breathable gas RPD escape
7.2.10.1.5 Oxygen content of RPD using regenerated breathable gas
7.2.10.1.6 Oxygen content of RPD using oxygen enriched breathable gas
7.2.10.2 Filtering escape RPD
7.2.10.2.1 Performance of work of breathing / breathing resistance/elastance for unassisted filtering escape RPD
7.2.10.2.2 Performance of work of breathing / breathing resistance/elastance for assisted filtering escape RPD
7.2.10.3 CO2 concentration limits
7.2.10.3.1 CO2 concentration limits for assisted filtering escape RPD
7.2.10.3.2 CO2 concentration limits for unassisted filtering escape RPD
7.2.10.4 Donning – Filtering escape RPD and supplied breathable gas escape RPD
7.2.10.5 Classes supplied breathable gas escape RPD
7.2.10.5.1 Supplied breathable gas escape general RPD
7.2.10.5.2 Escape from fire RPD
7.2.10.5.3 Mining escape RPD
7.2.10.5.4 Marine escape RPD
7.2.10.6 Classes escape filtering RPD
7.2.10.6.1 Filtering escape general RPD
7.2.10.6.2 Escape from fire
7.2.10.6.3 Escape mining
7.2.10.7 Short time breakthrough test for gas filter(s) other than type CO
7.2.10.8 Short time breakthrough test for gas filter(s) type CO
7.3 Pre-conditioning
7.3.1 Exposure to impact from drop — Filtering escape RPD and supplied breathable gas escape RPD
7.3.2 Resistance to changes in atmospheric pressure
7.3.2.1 Exposure to positive pressure
7.3.2.2 Exposure to negative pressure
7.3.3 Intermittent exposure to salt spray
7.3.4 Exposure to vibration and shock for supplied breathable gas escape RPD
7.3.5 Exposure to vibration and shock – marine
7.3.5.1 General
7.3.5.2 Resonance search vibration- marine
7.3.5.3 Endurance vibration-marine
7.3.5.4 Exposure to shock- marine
7.3.6 Exposure to vibration and shock – mining
7.3.6.1 General
7.3.6.2 Exposure to vibration-mining
7.3.6.3 Exposure to shock-mining
7.3.7 Filtering escape RPD
8 Inspection
8.1 General
8.2 Inspection
8.3 Testing of leak tightness using positive pressure
