This unit involves the skills and knowledge required to assess the fitness-for-purpose of explosion-protected aspects of equipment that has no certificate of conformity available (or the origin of a certificate cannot be verified), consistent with the requirements of AS/NZS60079.17.

It includes: gathering, establishing and evaluating technical information on relevant explosion- protection types; and, reporting on evaluations and findings, including recommendations based conditions of control, sound engineering, safety requirements and economic considerations.

This unit applies to personnel involved in engineering functions or maintenance (e.g. end users) when considering the continued use and/or refurbishment of legacy plant. It applies also to those personnel involved in the reclamation and/or repair and overhaul of equipment.

Site-specific work permits may be required to work in the hazardous environment. In addition, other permits may be required, such as confined space and to operate specific pieces of equipment such as elevated work platforms in various jurisdictions.

Additional and/or other conditions may apply in some jurisdictions subject to regulations related to electrical work. Practice in the workplace and during training is also subject to work health and safety (WHS)/occupational health and safety (OHS) regulations.

This unit is adopted from clause 2.12 of AS/NZS 4761.1:2018 Competencies for working with electrical equipment for hazardous areas (EEHA). There may be differences between the content of this unit and AS/NZS 4761.1:2018, so the Standard must be checked to ensure compliance with it. Clause 2.12 of AS/NZS 4761.1:2018 includes the following precondition for assessment:

• “A candidate seeking assessment in this unit shall have been deemed competent to assess the compliance of general electrical and control equipment at AQF level 7 and NZQF level 7 (BD) or equivalent.”