The National Standard GOST R 56927-2016 ‘Pipes made of oriented unplasticised polyvinylchloride for water supply. Specifications’ has been approved for voluntary implementation. The standard was developed in compliance with ISO International Standard and presented by TC 465 “Construction” Technical Committee for Standardisation.
“The standard introduction will allow application of the pipes made of oriented unplasticised polyvinylchloride for water supply without additional approvals. This material has enhanced durability and, therefore, will promote energy and power saving. The standard comes into force from 1 January 2017,” commented Elena Sierra, Deputy Minister for Construction and Housing and Utility Sector of the Russian Federation.
The pipes made of oriented unplasticised polyvinylchloride (PVC-O) are used for underground and external pressure water supply, sewer and irrigation pipelines, especially, when special operational parameters such as impact, pressure change and load resistance are required.
The pipes are designed for water transportation, including potable water, with the temperature up to 45°C and operating pressure up to 2.5 MPa. The orientation of molecules creates a layered structure in pipe wall material, which ensured protection from fracture failure, caused by the small cracks in the material matrix or scratches on the surface of the pipe wall. Oriented unplasticised polyvinylchloride can be considered as high notch resistance material with no additional tests required to support that. There is no risk of rapid crack propagation effect due to morphology of oriented pipe material.
The National standard takes into account important aspects of PVC-O pipes application, including classification of the material properties, operational parameters for the pipes and size range. The standard includes a complete range of pipe testing methods and acceptance procedures.
Note: The work of the Technical Committee 465 ‘Construction’ is aimed at implementation of priority standardisation in construction regulated by the technical Regulation Law and Decisions of the President and the Government of the Russian Federation. The Committee operates on the platform of the ‘Federal Centre for Standardisation’ Federal Autonomous Organisation.
Leading research and development institutes, educational institutions in construction, public construction organisations and association take part in the committee’s operation.