Registration number (WIID)Project No.TitleStatus
20397LVS EN 378-4:2008Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recoveryAtcelts
36623LVS EN 378-4:2017Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recoveryAtcelts
38117LVS EN 378-4+A1:2012Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recoveryAtcelts
70230LVS EN 378-4+A1:2020Refrigerating systems and heat pumps - Safety and environmental requirements - Part 4: Operation, maintenance, repair and recoveryStandarts spēkā
60180LVS EN ISO 14903:2018Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2017)Standarts spēkā
77871LVS EN ISO 14903:2025Refrigerating systems and heat pumps - Qualification of tightness of components and joints (ISO 14903:2025) 
76072LVS EN ISO 21922:2021/A1:2024Refrigerating systems and heat pumps - Valves - Requirements, testing and marking - Amendment 1 (ISO 21922:2021/Amd 1:2024) 
64628LVS EN ISO 21922:2022Refrigerating systems and heat pumps - Valves - Requirements, testing and marking (ISO 21922:2021)Standarts spēkā
61063LVS EN ISO 22712:2023Refrigerating systems and heat pumps - Competence of personnel (ISO 22712:2023)Standarts spēkā
73147LVS EN ISO 24664:2024Refrigerating systems and heat pumps - Pressure relief devices and their associated piping - Methods for calculation (ISO 24664:2024) 
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