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Closing-off Structures for Water Abstraction Wells ++ PDF file ++
Plastics Piping Systems for Gas and Water Supply; Requirements and Testing; Part A6: PA-U 160 and PA-U 180 Pipes and their Joints and Connections ++ PDF file ++
Decision Support for the Rehabilitation of Water Distribution Systems ++ PDF file ++
This Guideline W 403 applies to the elaboration of a rehabilitation strategy and rehabilitation planning, covering also the implementation of renewal and renovation measures (rehabilitation measures) for water distribution systems (pipeline networks, including long-distance mains) and complementing at the same time the fundamental requirements set forth in DVGW W 400-3 (A).
Polyethylene coatings on steel pipes and and fittings - Requirements and testing; English translation of DIN 30670:2012-04 ++ PDF-Datei ++
This standard DIN 30670 specifies requirements for factory-applied three-layer extruded polyethylene-based coatings, and one- or multi-layered sintered polyethylene-based coatings for the corrosion protection of steel pipes and fittings.
Network and failure statistics – Collection and processing of data for the maintenance of water distribution systems ++ PDF file ++
This Code of Practice W 402 applies to the collection and processing of inventory, condition and environmental data about water distribution systems. Condition data notably include failure data. This paper describes how to develop a consistent database and how to process failure data.
Hygiene requirements for cement-bound materials intended for use in drinking water supply systems - testing and evaluation ++ PDF file ++
This Code of Practice W 347 describes the tests and hygiene requirements for cement-bound materials in contact with drinking water or with raw water used for water abstraction purposes.It furthermore serves to verify the hygienic safety of all cement-bound materials listed in Table 1 that are used in the production of materials intended for use in contact with drinking water for the conditioning, storage and distribution of drinking water in accordance with § 17 Par. 1 of the Drinking Water Ordinance.
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