Australian Explosion Protection (Ex) Certification Requirements
Ex Equipment must comply with clause 4.4 of AS/NZS 60079.14:2017 in Australia. The related equipment, such as zener barriers or galvanic isolators for intrinsic safety, must meet the same standards. Simple apparatus in an intrinsically safe circuit, such as simple switches or resistive elements supplied by a recognised intrinsically safe isolator or barrier, are the only exception. This post provides a summary of the requirements. Directly acceptable certification In most circumstances, equipment having ANZEx or IECEx certification can be used directly in hazardous areas in Australia. Underground coal mines subject to firedamp (Group I) are subject to additional rules, which typically necessitate a certificate from an Australian certification authority or specific regulatory authorisation. 2. Certification to other standards When using equipment with acceptable certification is not practical, equipment with other certification may be used. T...