Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-1: Space heating and DHW generation systems, combustion systems (boilers, biomass), Module M3-8-1, M8-8-1; German version EN 15316-4-1:2017
Edition 2017-09

Energy performance of buildings - Method for calculation of system energy requirements and system efficiencies - Part 4-2: Space heating generation systems, heat pump systems, Module M3-8-2, M8-8-2; German and English version prEN 15316-4-2:2022
Edition 2022-04

Information Processing Systems-Open Systems Interconnection-Internal Organization of the Network Layer
Edition 1988-07-01

Manually Operated Shut-Off Valves for Gas Piping Systems
Edition 1988-03-01

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Edition 2022-08-03

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Edition 2016-07-01

GRP tanks and vessels for use above ground - Part 2: composite materials - Chemical resistance
Edition 2004-05-01

GRP tanks and vessels for use above ground - Part 4: delivery, installation and maintenance
Edition 2005-06-01

GRP tanks and vessels for use above ground - Part 1: raw materials - Specification conditions and acceptance criteria
Edition 2021-09-22

GRP tanks and vessels for use above ground - Part 3 : design and work-manship.
Edition 2022-11-23