This International Standard defines the activities related to refrigerating systems according to EN 378-1, EN 378-2, EN 378-3, EN 378-4 and ISO 5149-1, ISO 5149-2, ISO 5149-3 and ISO 5149-4 and the associated competence profiles and establishes procedures for assessing the competence of persons who carry out these activities. Activities with regard to electricity are excluded. NOTE As a refrigerating circuit is considered not to incorporate electrical and electronic systems, activities in this area are not part of this standard. For competences on electrical and electronic systems, it is recommended to refer to national regulations or appropriate European or national standards. This European Standard does not apply to persons carrying out work on self-contained refrigerating systems as defined in EN 378-1 from the initial design of the product to the complete manufacture of the product, provided the process is controlled and the methods used are checked by an organisation or individual, responsible for the compliance with statutory requirements on health, safety and environment (e.g. energy efficiency). NOTE The standard is not a training programme .