This unit involves the skills and knowledge required to plan and supervise the repair and overhaul of explosion-protected equipment type intrinsically safe (Ex i). It includes liaising with equipment users to establish and document the level of work required; writing specifications for the repair and overhaul and arranging for repairs to be carried out; verifying compliance of repaired and overhauled equipment; and completing all the required documentation.

This unit applies to electrical equipment repair workshop supervisory job function, designated as the ‘responsible person’.

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 (EWPs) 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 of competency and associated assessment requirements is adopted from clause 2.22 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 2.22 of AS/NZS 4761.1:2018 includes the following precondition for assessment:

• “A candidate seeking assessment in this unit shall be competent to overhaul and repair electrical components and/or non-electrical components of electrical equipment at AQF level 3 or NZQF level 4 or higher.”