Article 4 Certification of personnel

Category I certificate holders may carry out all the activities provided for in Article 2(1);

Category II certificate holders may carry out the activities provided for in point (a) of Article 2(1) provided that it does not entail breaking into the refrigeration circuit containing fluorinated greenhouse gases. Category II certificate holders may carry out the activities in points (b), (c) and (d) of Article 2(1) in relation to refrigeration, air conditioning and heat pump equipment containing less than 3 kg, or, if hermetically sealed systems which are labelled as such are concerned, less than 6 kg of fluorinated greenhouse gases;

Category III certificate holders may carry out the activity provided for in point (b) of Article 2(1) in relation to refrigeration, air conditioning and heat pump equipment containing less than 3 kg, or, if hermetically sealed systems which are labelled as such are concerned, less than 6 kg of fluorinated greenhouse gases;

Category IV certificate holders may carry out the activity provided for in point (a) of Article 2(1) provided that it does not entail breaking into the refrigeration circuit containing fluorinated greenhouse gases.

for a maximum period of two years, to personnel undertaking one of the activities referred to in Article 2(1) and enrolled in a training course for the purpose of obtaining a certificate covering the relevant activity, provided that they carry out the activity under the supervision of a person holding a certificate covering this activity;

to personnel undertaking brazing, soldering or welding of parts of a system or piece of equipment in the context of one of the activities referred to in Article 2(1), which hold the qualification required under national legislation to undertake such activities, provided that they are supervised by a person holding a certificate covering the relevant activity;

to personnel undertaking recovery of fluorinated greenhouse gases from equipment covered by Directive 2002/96/EC with a fluorinated greenhouse charge of less than 3 kg, in premises covered by a permit in accordance with Article 6(2) of that Directive, provided that they are employed by the company holding the permit and have completed a training course on the minimum skills and knowledge corresponding to Category III as set out in the Annex to this Regulation verified by an attestation of competence issued by the permit holder.