Gas information sheet 63: Gas piping support systems and AS/NZS 5601.1:2013
This gas information sheet explains how to achieve compliance when a gas piping support system varies from the AS/NZS 5601.1:2013 ‘means of compliance’ requirements.
A gas piping support system must comply with the ‘means of compliance’ requirements of AS/NZS 5601.1:2013 (Section 5.8). Where a proposed support system varies from these requirements—for example, a support system that includes the support of single and multiple pipes at the one support point using undersized diameter rod hangers and/or non-compliant support spacing—then a performance-based design application (as per Section 2 of AS/NZS 5601.1:2013) must be submitted to Energy Safe Victoria (ESV) for review and acceptance.
Submitting an acceptable performance-based design application
To submit an acceptable performance-based design application:
- Create and submit a gas application using ESV’s online system (GasTrac). Note within the scope of works that you are using a performance-based design for the pipe support system and attach a separate document that outlines your performance-based design proposal.
ESV’s Gas Information Sheet No.45 – Performance-Based Complex Gas Installations provides guidance on making a performance-based design application.
Supporting documentation from both the applicant and a competent person must be submitted to verify that the design meets the required performance outcomes.
The applicant must provide:
- a detailed description of the performance outcomes the alternative solution is required to meet from Section 2 – AS/NZS 5601.1:2013, in particular clauses 2.1 and 2.4.5, or other clauses deemed relevant
- clear identification of:
- which ‘means of compliance’ clause/s from Sections 3 to 6 of AS/NZS 5601.1:2013 the performance-based design relates to
- the specific section of the gas installation (scope of work) that the performance-based design relates to. (For example, ‘the piping in the basement car park’, or ‘piping in the Level 5 commercial kitchen’, etc.)
Additional information from a competent person to support the application must include:
- details of the relevant site address and location of the installed piping system
- evidence from the competent person that the supplied piping support system is based on their assessment of the proposed installation’s support requirements
- a schematic of the piping route clearly showing how many pipes are supported, with pipe size and support spacing noted
- details of the materials to be used in the piping support system, for example, the size and type of anchors, rod hangers, horizontal supports, clip heads, etc.,
- information about whether the piping support system requires additional design or components for flexibility (expansion) demands, and if so, then how that will be managed.
- Supporting documentation will only be accepted if it is supplied and signed off by a competent person. A ‘competent person’ is defined as either:
- a suitably qualified engineer if it is a custom designed system with no supporting information from a piping support manufacturer, or
- an authorised representative from the piping support system manufacturer if it is a proprietary system with supporting information from the piping support manufacturer.
If the application is:
- a new application, then attach the performance-based design for the proposed gas piping support system as a separate document with your GasTrac gas application
- in response to an identified non-compliance and the installed system is to remain unmodified, then submit a performance-based design application for review and approval.
Contact ESV’s Gas Technical Information Line on 1800 652 563, or email firstname.lastname@example.org.