To comply with the requirements as per Department of Minerals and Energy Mines Health and Safety Act, electrical apparatus used in a hazardous area shall be explosion-protected and certified as such in a test report by an inspection authority approved by the chief inspector.
Further to this comes the SANS ARP 0108:2007 Edition 1.1 Annex C: upgrading and maintenance of EPA certificates for mines and factories.
* C.1 In South Africa, all EPA used in underground mines (Group I) and on surface (Group II) shall be covered by an IA certificate. The requirements in C.2 to C.15 cover the validity of IA certificates.
* C.2 All IA certificates shall have a validity period of 10 years. Where a product is in service and its certificate has expired it will not be affected. IA certificates will be valid for a period of one year.
This, in short, states that all imported IS equipment based on overseas certification must be inspected and certified by a South African inspection authority approved by the chief inspector. No overseas certification is valid unless it is underwritten by a local IA certificate. This has an impact on local importers of overseas IS certified instrumentation.
Solution
R&C Instrumentation has contracted the services of local inspection authority, MASC, to assist with the development and certification of the Raytek ST61-IS and ST81-IS models.
Adaptation of the standard ST61 and ST81 models to Ex Rating Ex ib I/IIA T4 is done at a workshop based in Modderfontein where strict quality control measures are adhered to.
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