EN 13445 - Unfired Pressure Vessels is a standard that provides rules for the design, fabrication, and inspection of pressure vessels
EN 13445 consists of 8 parts:
Parts 7 and 9 do exist but they are merely technical reports.
EN 13445-10:2015 : Unfired pressure vessels - Part 10: Additional requirements for pressure vessels of nickel and nickel alloys .PUBLISHED 2016.6.30
EN 13445 was introduced in 2002 as a replacement for national pressure vessel design and construction codes and standards in the European Union and is harmonized with the Pressure Equipment Directive (97/23/EC or "PED"). New updated versions of all parts were published between 2009 and 2012.
References
EN 13445 Wikipedia(Text) CC BY-SA