Registration number (WIID)Project No.TitleStatus
82762prEN 12255-15 revWastewater treatment plants - Part 15: Measurement of the oxygen transfer in clean water in aeration tanks of activated sludge aeration plants - General requirementsIzstrādē
7208EN 12056-2:2000Gravity drainage systems inside buildings - Part 2: Sanitary pipework, layout and calculationIzstrādē
31269EN 295-6:2013Vitrified clay pipes systems for drain and sewers - Part 6: Requirements for components of manholes and inspection chambersIzstrādē
82536prEN 13508-1 revInvestigation and assessment of drain and sewer systems outside buildings - Part 1: General RequirementsIzstrādē
31268EN 295-5:2013Vitrified clay pipe systems for drains and sewers - Part 5: Requirements for perforated pipes and fittingsIzstrādē
82537prEN 13508-2 revInvestigation and assessment of drain and sewer systems outside buildings - Part 2: Visual inspection coding systemIzstrādē
27357prEN 13101 revSteps for underground man entry chambers - Requirements, marking, testing and evaluation of conformityIzstrādē
82538prEN XXXInvestigation and assessment of drain and sewer systems outside buildings – Part 3: Coding system for the cleaning of drain and sewer systemsIzstrādē
26748EN 12050-3:2015Wastewater lifting plants for buildings and sites - Part 3: Lifting plants for limited applicationsIzstrādē
39502EN 295-4:2013/prA1Vitrified clay pipe systems for drains and sewers - Part 4: Requirements for adaptors, connectors and flexible couplingsIzstrādē
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