ATEX vs PED

07/07/2016

ATEX vs PED

ATEX Directive (2014/34/EU) vs Pressure Equipment Directive 2014/68/EU (PED)


The Pressure Equipment Directive 2014/68/EU (PED) is a single market directive similar to Directive 2014/34/EU. Relatively few items of pressure equipment have their own source of ignition. There are a small number of examples of safety accessories which may be autonomous protective systems or, possibly, equipment. Flame arrestors have been judged to be pressure accessories in the sense of the PED. There are no additional requirements for the flame arrester element under the PED. PED specifically excludes from its own scope equipment classified no higher than Category I under Article 9 of PED but inside the scope of ATEX. 


The Pressure Equipment Directive deals only with the pressure hazard and does not consider the prevention of and protection against explosions/inflammations, which are not triggered by pressure. In most cases it is presumed that PED equipment does not have an own ignition source when it is properly installed according to the instructions of the manufacturer (including information about maintenance and repair of the connecting devices, e.g. valves, flanges). If such PED equipment shows hot surfaces occurring during operation caused by the temperature of its content solely, it is not applicable to consider this equipment under the ATEX Directive 2014/34/EU. Nonetheless, a hot surface risk assessment shall be undertaken to ensure that any explosive atmosphere is not ignited.

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