NZS 5442 Specification for reticulated natural gas

Overview

Overview

We are consulting on the draft DZ 5442 Specification for reticulated natural gas. 

What is NZS 5442 about? 

The revision of this standard by Standards New Zealand Committee P4206 serves as a specification for reticulated methane-based gas. It acknowledges and accommodates blending renewable gases (such as biomethane and hydrogen) supplied to consumers, to help ensure that the gas is suitable for transportation, and safe to use in gas-burning appliances and equipment. The committee has, therefore, decided to drop the word ‘natural’ from the previous title of this standard, to reflect that blending other gases with methane-based gas in the network is an acceptable practice.

While there are no specific limits on the level of biomethane that can be blended, the committee determined that blending hydrogen is restricted to injection within the LDS (< 20 barg) and limited to 10% maximum. The rationale for this requirement comes from a body of international research. The limits set by the committee are designed to remain within the range set by the Wobbe index parameters, while being consistent and aligned with hydrogen blending limitations in the latest revision of AS 4564, General-purpose natural gas.

Consultation draft

Please find below the consultation document (DZ 5442) for you to view or download. 

Important to note

All submissions need to go through this portal. There is no option to upload separate files during the submission process. Documents with submissions sent to Standards New Zealand separately will not be considered by the committee. 

DZ 5442