BS EN 81346-2:2010 Industrial systems, installations and equipment and industrial products. Structuring principles and reference designations. Classification of objects and codes for classes
2010BS EN 81346-2:2010 Industrial systems, installations and equipment and industrial products. Structuring principles and reference designations. Classification of objects and codes for classes
2010BS EN 81346-1:2009 Industrial systems, installations and equipment and industrial product - Structuring principles and reference designations - Basic rules
1996BS EN 61346-1:1996 Industrial systems, installations and equipment and industrial products - Structuring principles and reference designations - Basic rules