This document specifies the requirements and test methods for plastic piping systems intended for use in the renovation of non-pressure underground drainage and sewerage systems, which operate as gravity systems and can be used for subject to a maximum loading of 0.5 bar 1 1 bar = 0.1 MPa = 0.1 N / mm2 = 105 N / m2. It is applicable to pipes and fittings as manufactured, as well as 'the casing system installed. It is not applicable to existing piping or non-structural projected liners or annular fillers. This document sets out the general requirements common to all relevant renovation techniques.