hello my name is david crew and i'm a
member of the agw6 committee
that has responsibility for asnzs5601
this presentation will run through some
of the changes that will form part of
the new asnzs5601 part 1 2022 edition
a summary of the changes has been
completed and can be found under the
preface at the front of the new standard
we'll run through some of the most
significant changes in this video as
always it's important to check the standards
any time you're completing gas
installation work
please be aware that this video will not
go through all the changes in the new
standard but the most significant
so moving on to some of those changes now
firstly a definition has now been
included in asn zs 560 and part 1 for
fire safety system
this was included as a result of changes to
the requirements around multi-layer pipe
which will be discussed in further
detail later in this video.
this definition was provided with the
assistance of the australian building
codes board. a new definition in clause
1.3.65 for ignition source has been
included in asnzs 5601 part 1.
ignition sources include but are not
limited to flames, incandescent material, electric sparks,
hot surfaces, and mechanical impacts.
section two of the new standard has now been split into two different sections, one being
for essential safety requirements and the other being performance-based design requirements.
this has been done to prevent confusion
around the two separate types of
requirements in section two
essential safety requirements is first in section two followed by
performance-based design requirements
brazing will now be prohibited within one metre of a joint with non-metallic
components installed
it is important to note that there may be specific requirements that
manufacturers also require when brazing or silver soldering is being carried out
clause 5.2.12 now includes the prohibition of brazing or silver soldering within one meter
from non-metallic components changes have been made to the requirements for installing pipes in
wooden joists or metal frame walls previously there were limited requirements in relation to this issue
but following consultation with asnz 3500 series of standards a similar requirement has now been made
in the new asn zs 5601 part one
there have been figures included to help explain the requirements for both wood
and timber frames
the requirements in clause 5.3 point 14 state the location and maximum size of holes to be drilled when installing
fitting lines
prohibition on the installation of multi-layer pipe above ground external to buildings
clause 5.3.16 will now prohibit the use of multi-layer pipe being installed above ground outside a building,
for example if a multi-layer pipe was to be installed to a meter location and the multi-layer pipe was planned to
be protected from uv this would now be considered non-compliant to the new standard.
the ag6 committee responsible for 5601 has received considerable feedback on this issue from both manufacturers and
consumers to come to this decision. it is also worth noting that permanent joints are required any time a joint in a fitting
line is completed in an inaccessible location, for example in a cavity wall.
clause 5.2.11 now requires the use of specific isolation devices to be installed if there is multi-layer pipe installed
within a building. this clause states that if a multi-layer pipe has been installed the installation shall be fitted with a system that will
shut off the gas supply when the fire safety system operates.
we've previously discussed what a fire safety system and the new definition that has been included in asnzs5601 part 1.
the isolation valve installed must be a class 1 safety shutoff valve and installed and be located prior to any multi-layer pipe and be as close as practicable to the gas supply point or gas meter
ag-6 has included this requirement due to the durability and mechanical strength that multi-layer pipe has when subject subjected to fire.
extensive testing and research has been conducted on this issue
alternatively for class 1a buildings, for example a standalone house as defined in the ncc when no fire safety system has been installed and the volume of the fitting line is less than 30 liters, a device that automatically shuts off the gas supply if gas tightness for example a leak
is adversely affected by a fire emergency event shall be provided the same location requirements will apply
as previously discussed there are now increased clearance requirements between domestic cooking appliances and range hoods to align with
iec 6035-2-31 household and similar electrical appliances
the requirements in clause 6.10.1.1 change from 600 millimeters currently to 650 millimeters for clearances to range hoods this revised clearance
brings the standard in line with other jurisdictions around the world
clause 6.6.1 now prohibits the use of semi-rigid connectors for use on the installation of commercial catering equipment unless in the case of semi-rigid stainless steel connectors it forms part of a certified hose assembly or in the case of a semi-rigid connector forms part of a certified appliance that means that if it has been approved as part of an appliance multi-layer pipe will also be prohibited within one metre of the nearest part of the appliance and the final connection be made in either copper steel or a certified hose assembly semi semi rigid connectors are approved for 30 movements whereas hose assemblies are required to be approved for seven and a half thousand movements extensive testing has been undertaken around the requirements for protection of combustible materials
table c point 2.2 now requires a minimum 15 millimeter thickness for the protection of combustible materials around commercial catering equipment
and you can find more information in regards to this requirement in appendix c of the new standard new pipe sizing graphs and tables have been included in the appendix f based upon the churchill friction factor equation rather than the national fuel codes fuel gas code
these tables are less constrictive for complex gas installations where there are long pipe runs and large diameter piping and it's more in keeping with the flow capacities of the previous 2004 standard. ESV in the future will putting information on its website to assist in pipe sizing
Appendix k has been revised to include the effect of altitude on gas supply pressure for high-rise building installations
it is important to remember the effect of gas pressures and how it is affected by the height of a structure. compensation needs to be allowed for.
a general rule of thumb is that for natural gas the pressure will increase by approximately 0.50 kpa for every 100 meters rise in the building
clause 6.9.4 now has revised requirements for the location of fluid terminals under a covered area in a recess or on a balcony.
flue terminals will now be required to extend beyond the external corner of the covered area and discharge towards an open area as depicted
in the diagrams on our screen
additionally fluid terminals under any circumstances shall not be located in roof spaces. this requirement now brings australia in line with requirements in new zealand.
clause 5.2.9.2 will now require where more than one commercial catering appliance is to be installed in a kitchen either of the
following shall apply:
- a single quarter turn manual shutoff valve shall be installed to isolate all appliances
- the manual shutoff valve shall be readily accessible and clearly identified
- a readily or a readily accessible emergency stop button which is clearly identified by a sign shall be connected
to an electrically operated valve with a key operated reset function to ensure no gas flows to the installation after the restoration of
power following a power failure there are new requirements for the isolation of installations in educational institutions.
clause 5.2.9.1 now requires installations to have
- a readily accessible quarter turn manual isolation valve,
- a solenoid connected to a timing device set to the duration the installation is expected to operate
- a readily accessible emergency stop button
- signage adjacent to the emergency stop button indicating its purpose
- operating instructions for the emergency stop button
and the system shall require pressure proving of the downstream installation
prior to restoration of the gas supply.
there are now specific requirements for the connection of freestanding commercial catering equipment using a hose assembly.
clause 6.10.2.7 will now require the hose assembly to hang in a u-shape hose assemblies are required to be either class b or d means to prevent damage to the hose and assembly will now also be required. ESV sees a high level of non-compliance in this area which initiated a change to
the standards. in the future we will be looking to include this issue in our zero tolerance policy.
new requirements have also been introduced for freestanding commercial catering crew with an under equipment connection.
clause 6.10.1.10 will now specifically prohibit the connection being made by a hose assembly or semi-rigid connector
clause 6.10.2.2 has been changed to include more appliance descriptions and some distances for certain appliances have been changed as can be seen on our screens in table 6.10.2.2 as clause 6.0.10.2.2 is not limited to grease filters located directly above the commercial catering appliance but rather incorporates any part of any grease filter which is within the maximum required exclusion area as depicted by the picture on your screen.
a reminder that this clause forms part of ESV's zero tolerance policy when inspecting or approving commercial kitchen installations
as detailed in this present presentation there are substantial changes from the 2013 edition of asn zs 5601 part one and therefore all gas fitters are encouraged to purchase a copy of the newest asnzs part 1 2022 edition standard.
standards can be purchased from the standard australia store or on the sio global info store. links are available on both their
websites
that concludes our presentation on the changes to asn s5601
as always if you have any further questions please visit our visit our website or contact us on our technical helpline.
I'd like to thank you for watching this video.
Reviewed 08 September 2023