RACA Journal June 2019 | Page 66

Responsible Refrigeration installers who in Category A are installing or maintaining room air conditioners or refrigeration units also receive training on the units they deal with from the manufacturers. Where the Category ‘B’ Artisan registered practitioners work on new installations and do repair and maintenance, the responsibility falls on that person. Regardless of the type of refrigerant, be it an F-gas, carbon dioxide or ammonia, the Certificate of Conformity must be signed by the responsible person who has done the work or been in the position of supervising other practitioners. Regardless of the type of refrigerant, the Certificate of Conformity must be signed by the responsible person who has done the work or been in the position of supervising other practitioners. The clause 3 in regulation 17 mentions an Approved Inspection Authority (AIA). An AIA inspector would become involved when the size of the refrigeration system and components fall into the categorisation defined in SANS 347 in category II and above. 64 RACA Journal I June 2019 SANS 347 defines five categories of hazard. Sound engineering practice (SEP) applies to equipment that is not subjected to conformity assessment but that shall be designed and manufactured in accordance with sound engineering practice (best practice) in order to ensure safe use. Such equipment shall ensure that design and manufacture take into account all the relevant factors that influence safety during its intended lifetime. The tables in SANS 347 define where SEP lies. The Authorised Refrigeration Practitioner must provide a CoC for the work on this equipment. The next level is for equipment categorised as category I equipment where the manufacturer (in some cases the contractor) shall ensure that such equipment complies with the requirements of the applicable health and safety standards. An Authorised Refrigeration Practitioner must provide a CoC for the work on this equipment. The design of pressure equipment for category II and above needs to be approved for compliance with a scheduled health and safety standard by an appropriately registered professional person competent in the field of pressure vessel design and with experience of the relevant health and safety standard. The qualifications of the professional person shall be verified by the AIA or certification body as applicable. RACA www.hvacronline.co.za