NZS 5442 (Int):2024
Specification for reticulated natural gas
The purpose of this specific interim standard is to allow the blending of biomethane within the reticulated gas network. The final and fully revised version of this standard is expected to additionally allow blending of hydrogen gas within the gas distribution network.
This standard provides specification limits for gas characteristics and components consistent with safe operation of the existing appliance population. It provides certainty for appliance manufacturers when providing appliances for use in the New Zealand market and for installers when setting up those appliances.
By specifying limits for contaminants, it seeks to ensure the integrity of the transportation systems and prevent operating problems for most end users.
In this edition, the introduction of biomethane has been formalised, and the test methods and frequencies have been reviewed and updated. Because biomethane has been introduced, the limit for oxygen has been relaxed and, relatedly, the limit for water has been reduced in Table 2.
Some gas consumers may require tighter limits on some listed constituents, or limits on other unlisted constituents, to support specific end uses (for example, to avoid poisoning catalysts). These requirements should be met by additional processing by the gas consumers or be addressed in the contract with the gas supplier. Any such limits must be technically justifiable and supported by appropriate methods for demonstration of compliance. If of sufficient generality, they may be incorporated into this specification through the normal process for amendment of standards.
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NZS 5442(Int):2024 Specification for reticulated natural gas
Committee representation
Acknowledgement
Copyright
CONTENTS
Referenced documents
Latest revisions
Review of standards
Foreword
1 SPECIFICATION FOR RETICULATED NATURAL 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 – Informative
Appendix B − Biomethane − Normative
Appendix C – Derivation of specification
Appendix D – Quality monitoring and demonstration of compliance with specification
Appendix E – Matters for consideration in contracts
Appendix F – Audit checklist
Appendix G – Hydrogen
Table 1 – International families of gases
Table 2 – Specification limits for New Zealand reticulated gas
Table A1 – Possible biogas components
Table B1 – Additional specification limits for non-petroleum-based gases (biomethane)
Table D2 – Biomethane contaminants
Table D3 – Recommended test frequencies
Table F1 − Performance requirements
Figure C1 – Gas specification limits and flame characteristics
Previous versions
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NZS 5442(Int):2024 Specification for reticulated natural gas
Committee representation
Acknowledgement
Copyright
CONTENTS
Referenced documents
Latest revisions
Review of standards
Foreword
1 SPECIFICATION FOR RETICULATED NATURAL 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 – Informative
Appendix B − Biomethane − Normative
Appendix C – Derivation of specification
Appendix D – Quality monitoring and demonstration of compliance with specification
Appendix E – Matters for consideration in contracts
Appendix F – Audit checklist
Appendix G – Hydrogen
Table 1 – International families of gases
Table 2 – Specification limits for New Zealand reticulated gas
Table A1 – Possible biogas components
Table B1 – Additional specification limits for non-petroleum-based gases (biomethane)
Table D2 – Biomethane contaminants
Table D3 – Recommended test frequencies
Table F1 − Performance requirements
Figure C1 – Gas specification limits and flame characteristics
Previous versions
NZS 5442 (Int):2024
Online Library subscription information
Online library subscriptions provide a cost-effective solution for organisations of any size to access the latest standards, offering 24/7 access to a personalised catalogue. The service ensures subscribers have have the most up-to-date version of selected standards, incluing automatic updates for any amendments or versions. Pricing is dependent on the chosen standards and the number of concurrent users, with discounts applied from the standards PDF price. For customised subscriptions or further inquiries, contact the Online Library team.