Vannkvalitet

prEN 14451 - Devices to prevent pollution by backflow of potable water - In-line anti-vacuum valves DN 10 to DN 50 inclusive - Family D, type A
Emner: Drikkevann; Tilbakeslagsventiler
Komité: CEN/TC 164 (Water supply)
Opprinnelse:
Sluttdato: 28. mar 2019
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This document specifies: a) field of application; b) requirements for in line anti-vacuum valves; c) dimensional, the physico-chemical properties and the properties of general hydraulic, mechanical and acoustic design of in-line anti-vacuum valves DN 10 to DN 50; d) test method and requirements for verifying these properties; e) marking and presentation; f) acoustics. This document specifies the characteristics of in-line anti-vacuum valves DN 10 to DN 50 that are suitable for use in drinking water systems at pressures up to 1 MPa (10 bar) and temperatures up to 65 °C and for 1 h at 90 °C.
prEN ISO 13161 - Water quality - Polonium 210 - Test method using alpha spectrometry (ISO/DIS 13161:2019)
Emner: Undersøkelse av vannets fysiske egenskaper; Måling av stråling
Komité: CEN/TC 230 (Water analysis)
Opprinnelse:
Sluttdato: 10. apr 2019
Høringsforslag - detaljer
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ISO/DIS 24527 - Service activities relating to drinking water supply, wastewater and stormwater systems -- Guidelines on alternative drinking water service provision during a crisis
Emner: Forbrukertjenester; Drikkevann
Komité: ISO/TC 224 (Service activities relating to drinking water supply, wastewater and stormwater systems)
Opprinnelse:
Sluttdato: 8. mai 2019
Høringsforslag - detaljer
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