The amendments to harmonised standards under the Pressure Equipment Directive (PED) are published in an executive order. These took effect on October 11, 2021. It covers the harmonized standards for:
- metallic industrial piping systems;
- bolted connections for flanges and their joints;
- flame tube boilers made of corrosion-resistant steel.
Article 12 of Directive 2014/68/EU
In accordance with Article 12, pressure equipment or assemblies thereof  shall be presumed to conform to the essential safety requirements .
: Article 4(1) and (2) refer to assemblies which are in conformity with harmonized standards or parts thereof. The references have been published in the Official Journal of the European Union.
 The conformity is with the essential safety requirements described in Annex 1 to the Directive covered by the standards (or parts thereof).
In 1994, the EC made a request (M/071) to the European Committee for Standardization (CEN). In that request, the CEN is asked to draw up both product-related standards and the standards of a horizontal nature in connection with pressure equipment. This is in support of Directive 97/23/EC. Because when that was replaced by Directive 2014/68/EU, the essential safety requirements in Annex 1 did not change.
Standards amended and revised by the CEN
CEN has amended some existing standards. This was done based on the request M/071 and to reflect the state of the art.
Concerning bolted connections for flanges and their joints: The old harmonized standard from 2009 has been replaced by a new harmonized standard (EN 1515-4:2021).
Flame arresters made of corrosion resistant steel: The old harmonized standard from 2003 has been replaced by a new harmonized standard (EN 14222:2021).
Regarding metallic industrial piping systems, the harmonized standard EN 13480-3:2017 has been amended.
Furthermore, CEN together with the Commission verified the compliance of the above measures with request M/071.
Official Journal of the European Union about the amendments Pressure Equipment Directive