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DIN 18234-1
Fire safety of large roofs for buildings - Fire exposure from below - Part 1: Roof areas without openings - Requirements and testing
DIN EN IEC 60623
Secondary cells and batteries containing alkaline or other non-acid electrolytes - Vented nickel-cadmium prismatic rechargeable single cells
VG 95238-1
Vented nickel-cadmium storage batteries - Part 1: Batteries and battery assemblies, survey; Text in German and English
NA 005-05-21 AA -dormant
Geothermy - Closed-loop heat exchange systems in boreholes (Downhole heat exchangers)
NA 060-16-30-11 AK
Closed transfer Systems
ISO/TC 23/SC 2/WG 11
Enclosed agricultural cabs and environmental air quality
DIN 18910
Thermal insulation for closed livestock buildings - Thermal insulation and ventilation - Principles for planning and design for closed ventilated livestock buildings
DIN CEN/TS 12101-11
Smoke and heat control systems - Part 11: Horizontal flow powered ventilation systems for enclosed car parks; German version CEN/TS 12101-11:2022
DIN EN 17692
Central heating boilers - Specification for indirectly heated unvented (closed) pressurized buffer tanks - Requirements, testing and marking; German version FprEN 17692:2022
DIN EN IEC 62877-1
Electrolyte and water for vented lead acid accumulators - Part 1: Requirements for electrolyte (IEC 62877-1:2023); German version EN IEC 62877-1:2023