AS/NZS 4130:2018 pdf free.Australian/New Zealand Standard Polyethylene (PE) pipes for pressure applications.
3 DEFINJTIOS
For the purpose of this Standard, the definitions given in AS/NZS 3500.0. AS/NZS 4131. and those below apply.
3.1 Brittle failure
The type of failure of the material in pipe form during pressure testing, where the pipe exhibits no plastic deformation visible to the naked eye (normal or corrected vision).
3.2 Co-extruded bjackett pipes
A pipe comprising two layers. where the layers are bonded simultaneously in a die head as part of the extrusion process.
3.3 Ductile mode
The type of failure of the material in pipe form during pressure testing. where the pipe exhibits plastic deformation visible to the naked eye (normal or corrected vision).
3.4 Fuel gas
Any fuel that is supplied through pipes or in containers and is a gas at a temperature of
+15°C and an absolute pressure of 101.325 kPa.
3. Hoop stress
The stress in a pipe or fitting under pressure acting tangentially to the perimeter of a transverse section.
3.6 Hydrostatic design stress (HDS)
Hoop stress due to internal hydrostatic pressure. which can be applied continuously at a specified emperature. and which is obtained by the application of a design factor to the minimum required strength (MRS).
3.7 Maximum alloi able operating pressure (MAOP)
The maximum pressure that can be sustained, with a design factor, by the type or class of pipe for its estimated useful life under the anticipated operating conditions.
3.H Nominal working pressure
Maximum pressure that can be sustained by the class of pipe for its estimated useful life under the expected working conditions.
3.9 Out-of-roundness (ovality)
The difference between the measured maximum outside diameter and the measured minimum outside diameter in the same cross-section of the pipe.
3.10 Pipe material temperature
Average temperature estimated as applying through the full wall thickness.
3.11 Shall
Indicates that a statement is mandatory.
3.12 Should
Indicates a recommendation.
3.13 Standard dimension ratio (SDR)
A nominal ratio of the pipe outside diameter to its wall thickness.AS/NZS 4130 pdf download.