NZS 5442:2025
Specification for reticulated gas
Standard specifies limits for gas characteristics and components that are consistent with safely operating the existing population of appliances. It provides certainty for those who manufacture appliances for the New Zealand market, and for installers who set up these appliances. By specifying limits for contaminants, it seeks to ensure the integrity of transportation systems and prevent operating problems for most gas consumers.
NZS 5442:2025 Specification for reticulated gas
Committee representation
Acknowledgement
Copyright
CONTENTS
Referenced documents
Latest revisions
Review of standards
Foreword
1 SPECIFICATION FOR RETICULATED GAS
1.1 Scope
1.2 Application
1.3 Interpretation
1.4 Definitions
1.5 Abbreviations
2 REQUIREMENTS
2.1 Safety and suitability for transportation and use
2.2 Contaminants
3 COMPLIANCE
3.1 General
3.2 Demonstration of compliance
3.3 Frequency of testing
3.4 Quality assurance
APPENDIX A – Biomethane
APPENDIX B – Biomethane (contaminants)
APPENDIX C – Derivation of specifications used in this standard
APPENDIX D – Quality monitoring and demonstration of compliance with this standard
APPENDIX E – Matters for consideration in contracts
APPENDIX F – Audit checklist
APPENDIX G – Hydrogen
Figure C1 – Gas limits and flame characteristics
Table 1 – International families of gases
Table 2 – Specification limits for New Zealand reticulated gas
Table A1 – Likely components in biogas, and their potential concentration, by source
Table B1 – Additional specification limits for biomethane
Table D1 – Methods to test the specification limits for New Zealand reticulated gas
Table D2 – Biomethane contaminants
Table D3 – Recommended test frequencies
Table F1 – Checklist of NZS 5442:2025 requirements
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NZS 5442:2025 Specification for reticulated gas
Committee representation
Acknowledgement
Copyright
CONTENTS
Referenced documents
Latest revisions
Review of standards
Foreword
1 SPECIFICATION FOR RETICULATED GAS
1.1 Scope
1.2 Application
1.3 Interpretation
1.4 Definitions
1.5 Abbreviations
2 REQUIREMENTS
2.1 Safety and suitability for transportation and use
2.2 Contaminants
3 COMPLIANCE
3.1 General
3.2 Demonstration of compliance
3.3 Frequency of testing
3.4 Quality assurance
APPENDIX A – Biomethane
APPENDIX B – Biomethane (contaminants)
APPENDIX C – Derivation of specifications used in this standard
APPENDIX D – Quality monitoring and demonstration of compliance with this standard
APPENDIX E – Matters for consideration in contracts
APPENDIX F – Audit checklist
APPENDIX G – Hydrogen
Figure C1 – Gas limits and flame characteristics
Table 1 – International families of gases
Table 2 – Specification limits for New Zealand reticulated gas
Table A1 – Likely components in biogas, and their potential concentration, by source
Table B1 – Additional specification limits for biomethane
Table D1 – Methods to test the specification limits for New Zealand reticulated gas
Table D2 – Biomethane contaminants
Table D3 – Recommended test frequencies
Table F1 – Checklist of NZS 5442:2025 requirements