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Responsible Refrigeration No 77

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Responsible Refrigeration No 77

Why is it necessary to be registered as an authorised refrigeration practitioner? Now as part of that necessity it is the legal requirement to issue a Certificate of Conformity.

From the Pressure Equipment Regulations is regulation 17 clause, (3) “An authorised person or an approved inspection authority shall issue a certificate of conformity after completion of a gas installation, modification, alteration or change of user or ownership ….”. Therefore, it is an obligation on the part of the registered refrigeration practitioner to issue a CoC on completion of an installation, maintenance or repair. Part of this service to clients and the obligation as an authorised refrigeration practitioner is to advise the client that a certificate of conformity is a necessary requirement of the Pressure Equipment Regulations. This part of the Pressure Equipment Regulations is covered in the training manual for the safe handling of refrigerants.

The compliance with standards of equipment and materials used starts way before the start of the installation or repair and final commissioning of a system either as new or maintenance. The major components such as compressors and switches must be compliant and selected for the capacity duty of the installation. The materials such as cables, piping must be approved and compliant with SANS standards. Most important of all the refrigerant gas charge for the application must be clean, moisture free and uncontaminated if it has been rerecovered during the repair and maintenance procedures. If new gas is used it must be purchased from a reputable supplier and of be of a type and classification specified by the equipment manufacturer.

Service cylinders used for recovery of refrigerant from a system must be as prescribed in regulations 18 of the Pressure Equipment Regulations for transportable gas containers and in compliance with the relevant standards indicated in the regulations as part of the OHS Act. Refrigerant cylinders shall be carefully weighed each time they are used and must not be filled in excess of the indicated filling mass. In addition pressure tests shall be carried out with dry nitrogen or another non-flammable dry gas from a cylinder with a pressure regulator.

All electrical switch gear and wiring shall be selected and installed in accordance with the national standard SANS 10142 for the wiring of premises for low-voltage installations.

Sometimes, an Approved Inspection Authority (AIA) certificate may be required for a pressure component where this falls into the category in SANS 347 for dangerous liquids and/or gas. This applies to large refrigeration systems where the pressure vessels are likely to fall into in category II and above in SANS 347.

A contracting company relies on their suppliers for the correct delivery of equipment, components and materials, but, you, as a competent SAQCC Gas registered practitioner it is also your responsibility is to check and check again.

 The information required on a CoC starts with entering the customer detail which is used to email the CoC to them directly once it is signed off. The Refrigeration Practitioner details are set up once you are registered and cannot be altered. Should any changes be necessary you will need to contact SAQCC for amendments. At each stage the input is saved and then you can proceed to the next step of the plant and/or repair details such as plant type.

A Description of installation or maintenance/repair work done needs to be filled in in the           space provided: ______________________________________________________________

Next the following system information must be detailed for the record;

Cooling Capacity: _______ Kw(c); Refrigerant type: ________:  Refrigerant charge: ______Kg

Evaporating Pressure: ___________KPa; Condensing Pressure: ____________KPa;

Remember this is all about safety, for you as the practitioner of for your client and their stall and possibly the public

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