CEN/TC 165
| Registration number (WIID) | Project No. | Title | Status |
|---|---|---|---|
| 31267 | EN 295-4:2013 | Vitrified clay pipe systems for drains and sewers - Part 4: Requirements for adaptors, connectors and flexible couplings | Izstrādē |
| 31270 | EN 295-7:2013 | Vitrified clay pipe systems for drains and sewers - Part 7: Requirements for pipes and joints for pipe jacking | Izstrādē |
| 69385 | prEN 12255-15 rev | Wastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge plants | Izstrādē |
| 69386 | EN 12255-13:2023 | Wastewater treatment plants - Part 13: Chemical treatment - Treatment of wastewater by precipitation/flocculation | Izstrādē |
| 70515 | EN 476:2022 | General requirements for components used in drains and sewers | Izstrādē |
| 26775 | prEN 295-4 rev | Vitrified clay pipes and fittings and pipe joints for drains and sewers - Part 4: Requirements for special fittings, adaptors and compatible accessories | Izstrādē |
| 36233 | prEN 12566-3 rev | Small wastewater treatment systems for up to 50 PT - Part 3: Packaged and/or site assembled domestic wastewater treatment plants | Izstrādē |
| 66077 | prEN 1917 rev | Concrete manholes and inspection chambers, unreinforced, steel fibre and reinforced | Izstrādē |
| 59691 | EN 1253-5:2017 | Gullies for buildings - Part 5: Gullies with light liquids closure | Izstrādē |
| 64285 | EN 12566-1:2016/prA1 | Small wastewater treatment systems for up to 50 PT - Part 1: Prefabricated septic tanks | Izstrādē |
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