prEN 16903

This document provides product category rules (PCR) for Type III environmental product declarations, as described in EN ISO 14025 and EN 15942, for plastic piping systems buried outside building structure and their main structural components, as specified by the list of product standards provided in Annex CC.
Main structural components are:
-  pipes;
-  fittings (e.g. flange couplers, bends and reducers, valves and electrofusion fittings);
-  manholes and inspection chambers (where applicable, e.g. for drains and sewers).
This document encompasses both pressure and non-pressure applications.
The intended function of the system considered is to convey fluids according to EN 476 (for sewers, drain and surface water); EN 805 (water supply), or EN 12007 (gas supply).
In case there is no application standard available, this document can also be used for other plastics piping systems such as cable conduits and surface water piping systems. This document specifies the rules for the product category of construction products as defined in and is intended to be used in conjunction with EN 15804+A2.
In addition to EN 15804+A2, this document specifies:
-  the functional unit (consisting of pipes, fittings, manholes and inspection chambers and ancillary components) and declared unit (consisting of pipes and/or fittings and/or manholes and /or inspection chambers);
-  the system boundaries and additional mandatory modules to be declared;
-  the processes to be included in the installation phase;
-  scenarios for module A4, A5;
-  use conditions for the use phase (B modules);
-  reference service life (RSL);
-  end of life scenarios.