Standard
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AS/NZS ISO 23875:2023
[Current]Mining - Air quality control systems for operator enclosures - Performance requirements and test methods
AS ISO 23875:2023 identically adopts ISO 23875:2021 (+ Amd 1:2022) which specifies performance and design requirements for air quality control systems for operator enclosures and their monitoring devices. The design specifications are universal in their application and do not contemplate specific mining environments. They are intended to meet identified parameters of both pressurization and respirable particulate and carbon dioxide concentrations
Published: 03/11/2023
Pages: 24
Table of contents
Cited references
Content history
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 Terms related to air quality
3.2 Terms related to the operator enclosure design
3.3 Terms related to measurement
4 Requirements
4.1 Performance requirements
4.2 Engineering design
4.2.1 Operator enclosure
4.2.2 Air quality control system
4.2.2.1 General
4.2.2.2 External air and recirculation airflow systems
4.2.3 Filters and filter housings
4.2.3.1 General
4.2.3.2 Filter housings
4.2.3.3 Handling instructions for filter media made from glass fibre
4.3 Monitoring devices
4.3.1 General
4.3.2 Carbon dioxide operator notification system for retrofit installations
4.3.3 Carbon dioxide operator notification system for machine manufacturers
4.3.4 Additional monitoring capabilities
5 Performance testing
5.1 Requirements
5.1.1 Test set up
5.1.2 Test equipment
5.1.3 Test methods
5.1.3.1 Pressure
5.1.3.2 External air system leakage
5.1.3.3 Decay time
5.1.3.4 CO2
5.2 Test report
6 Operation and maintenance instructions
6.1
6.2
6.3
Annex A
A.1 General
A.2 Background
A.3 Measuring CO2 in operator enclosures
A.3.1 Understanding CO2 concentrations
A.3.2 CO2 Monitoring devices
A.4 Calculating external air from CO2 concentration in an operator enclosure
Annex B
B.1 General
B.2 Operation and maintenance of the performance test equipment
B.3 Retrofitting operator enclosures
B.4 Operating air quality control systems
B.5 Maintaining operator enclosures and air quality control systems
B.6 Health and safety considerations
Bibliography
Amendment 1
Cited references in this standard
Content history
[Current]
[Current]
ISO 23875:2021/Amd.1:2022
DR AS NZS ISO 23875:2023
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