1.1 This European Standard specifies the requirements for materials, design, manufacture, testing inspection, safety systems and documentation (including instructions for first operation), for commonly-used types of gas-loaded accumulators and gas bottles for fluid power applications (see 1.2).1.2 This European Standard applies to the following types of components, defined as the pressure-containing envelope of gas-loaded accumulators:- bladder type;- diaphragm type;- piston type;- transfer type;- gas bottles used to provide additional gas capacity.They consist of one or several parts joined together by a variety of mechanical means and by welding.1.3 This