This part of ISO 11296 specifies the requirements and test methods for plastics piping systems intended to be used for the renovation of underground non-pressure drainage and sewerage networks, which are operated as gravity systems and subjected to a maximum surcharge pressure of 0,5 bar1). It is applicable to pipes and fittings as manufactured, as well as to the installed plastics lining system; it is not applicable to the existing pipeline or any annular filler.