Every Standard is subject to systematic review, normally 5 years after their publication, in order to determine whether it should be confirmed, revised/amended, or withdrawn.
Some standards require regular updating provisions, to take account the application feedback and to support their implementation. These provisions are developed within maintenance agencies.
UNM is responsible for two European maintenance agencies and one International maintenance agency dealing with the following standards :
- EN 13445 Unfired pressure vessels
- EN 13480 Industrial piping
- ISO 13399 Cutting Tools Reference Dictionary
Click above on the standard reference for a direct access to the corresponding agency.