This Competency Standard Unit covers the explosion-protection aspects of overhauling and repairing explosion-protected equipment at a craftsperson level. It requires the ability to identify and select authorized components, follow repair specifications to effect the overhauled/repaired of equipment and complete repair documentation.

This unit is directly equivalent to the Unit 2.20 Carry out overhaul and repair of explosion-protected equipment in the Australian/New Zealand Standard AS/NZS 4761.1 Competencies for working with electrical equipment for hazardous areas (EEHA) Part 1: Competency Standards. Equivalence includes endorsement in the explosion-protection techniques listed in the Range statement of this unit.

Unit details

Study level:
Vocational and further education (TAFE)
Unit code:


UEENEEM036A - Conduct a conformity assessment of explosion-protected equipment - gas atmospheres

UEENEEM044A - Conduct detailed inspection of hazardous areas installations gas atmospheres

UEENEEM065A - Conduct audit of hazardous areas installations - gas atmospheres


Assessment tasks will be designed to reinforce and extend knowledge and skill competence within set and controlled parameters in accordance with each unit's learning outcomes and performance criteria requirements, including the setting of work based practical application tasks designed to provide evidence of competence outcomes, within periodic and scheduled timelines. Students will be expected to demonstrate the following required skills and knowledge: - preparation to install and maintain explosion-protected equipment in hazardous areas; - the relationship between explosion-protected equipment, their certification documents and required locations given in specifications and layout drawings and/or written instruction; - installation standards and requirements applicable to hazardous; - maintenance procedures in hazardous areas that will ensure the integrity of the explosion-protection technique; - cable termination types suitable for use in hazardous areas; - the relationship between the documentation held in a verification dossier and the installed equipment; - inspecting a hazardous area installation; - documentation used in assessing explosion-protected equipment for conformance to accepted standards; - assessing to a current acceptable standard existing equipment that has been certified to previously acceptable standards; - a clause by clause assessment between the equipment manufacturing standard(s) and the current acceptable ex standards; - techniques used in fitness-for purpose assessment of equipment for use in hazardous areas, and; - processes used in auditing hazardous areas.

Where to next?

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