[ certification ]
Testing for certification and quality assurance at one of Kiwa ’ s testing facilities
3 . All electrical equipment should be grounded . 4 . All metallic parts should be at ground potential . 5 . Explosion relief panels can be installed for safe venting of explosion pressure .
6 . The outlet from relief valves or purge lines should be at the top-most location and about 4 – 5 m above ground level . The outlets of hydrogen and oxygen should be as far from each other as possible .
Certification
Any product to be commercialised needs to comply with regulations or directives of the target market . These requirements are , however , limited to generally described fundamental objectives ( termed ‘ essential requirements ’).
It is the manufacturer ’ s responsibility to demonstrate that its product complies with these requirements according to the current state of technology (‘ state of the art ’). The manufacturer retains the freedom to choose how it determines
the technical criteria required to demonstrate compliance . It is assumed that the current state of technology is reflected in the relevant European and / or international standards .
By affixing the market symbol ( CE for the EU market ) to the product and issuing the product certificate , the manufacturer indicates the ‘ presumption of conformity ’ of its product with relevant regulations and directives .
Electrolysers are not an exception and need to comply with certain regulations and directives , commonly PED ( Pressure Equipment Directive ), MD ( Machinery Directive ), EMCD ( Electromagnetic Compatibility Directive ) and others for the EU market . Although the declaration of compliance with most of the directives can be a selfdeclaration act by the manufacturer , for some particular directives , such as PED and ATEX , the assessment of the safety and issue of a certificate shall be performed by a legally appointed notified
26 Hydrogen Tech World | Issue 7 | December 2022