Unit of competency Outline

Date retreived
22/07/2026 3:25 PM AWST

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Install explosion-protected equipment and wiring systems - coal mining

Install explosion-protected equipment and wiring systems - coal mining

Unit of competency
National Code
UEENEEM023A
State Code
D3589
TGA Status
Deleted
DTWD Status
Deleted
Current Release Number
4.00
Current Release Date
16/12/2014
State Implementation and Classification
Approved Date
28/07/2014
Field of Education
031313 - Electrical Fitting, Electrical Mechanics
Original Release Date
28/07/2014
Nominal Hours
54
Description
1) 1.1) DescriptorThis unit covers the explosion-protection aspects for installing explosion-protected and associated equipment and wiring systems. It requires the ability to match equipment with that specified for a given location, work safely, and to installation standards and complete the necessary installation documentation.This unit is directly equivalent to the Unit 2.5 Install explosion-protected equipment and wiring systems 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.
Notes
Elements and Performance Criteria
1 Prepare for installation of equipment and wiring.
  • 1.1 OHS policies and procedures for preparing to work in a hazardous area are followed.
  • 1.2 Types of explosion-protected equipment and wiring systems to be installed are verified from design documents.
  • 1.3 Location in which specific items of equipment and circuits are to be installed is determined from design documents.
  • 1.4 Explosion-protected equipment markings are checked to ensure they conform to design specifications and certification documents.
  • 1.5 Certification document supplied with each item of equipment is collected for forwarding to appropriate personnel.
  • 1.6 Special tools, equipment and testing devices needed to carry out the installation work are obtained and checked for correct operation and safety.
2 Install the equipment and wiring systems
  • 2.1 OHS policies and procedure for working in a hazardous area are followed.
  • 2.2 Equipment is installed to conform with design specifications and Standards and within the limits specified by the equipment certification.
  • 2.3 Equipment and wiring system components are dismantled where necessary and parts stored to protect them against loss or damage.
  • 2.4 Equipment and wiring are installed in a manner that does not reduce the type of protection afforded by the equipment design.
  • 2.5 Circuits are tested prior to connection to devices to ensure resistance of earthing is sufficiently low, installation resistance is safe and polarity and connections are correct and each circuit complies with requirements.
3 Confirm that the installation is completed.
  • 3.1 Arrangements are made, in accordance with requirements, for an initial inspection to be carried out on the installation.
  • 3.2 Appropriate action is taken to rectify non-conformances found during the initial inspection to ensure the installation complies with requirements.
  • 3.3 The completed installation is documented in accordance with requirements and forwarded to personnel responsible for compiling the verification dossier.
RANGE STATEMENT
8) This relates to the unit as a whole providing the range of contexts and conditions to which the performance criteria apply. It allows for different work environments and situations that will affect performance.
This unit shall be demonstrated in relation to any hazardous area of coal mining and all the following explosion-protection techniques:

Flameproof ( enclosures only ) , (Ex'dI')
Increased safety, (Ex'eI')
Intrinsic safety, (Ex'iI')
Pressurization, (Ex'p')
Protection by enclosure-dusts, (Ex't')
Note: 'I' signifies Group I equipment
The following constants and variables included in the element/performance criteria in this unit are fully described in the Volume 2, Part 2.1.
EVIDENCE GUIDE
9) This provides essential advice for assessment of the unit and must be read in conjunction with the performance criteria and the range statement of the unit and the Training Package Assessment Guidelines.
The Evidence Guide forms an integral part of this unit. It must be used in conjunction with all components parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package.
Overview of Assessment
9.1)
Longitudinal competency development approaches to assessment, such as Profiling, require data to be reliably gathered in a form that can be consistently interpreted over time. This approach is best utilised in Apprenticeship programs and reduces assessment intervention. It is the industry-preferred model for apprenticeships. However, where summative (or final) assessment is used it is to include the application of the competency in the normal work environment or, at a minimum, the application of the competency in a realistically simulated work environment. It is recognised that, in some circumstances, assessment in part or full can occur outside the workplace. However, it must be in accord with industry and regulatory policy.
Methods chosen for a particular assessment will be influenced by various factors. These include the extent of the assessment, the most effective locations for the assessment activities to take place, access to physical resources, additional safety measures that may be required and the critical nature of the competencies being assessed.
The critical safety nature of working with electricity, electrical equipment, gas or any other hazardous substance/material carries risk in deeming a person competent. Sources of evidence need to be 'rich' in nature to minimise error in judgment.
Activities associated with normal everyday work influence decisions about how/how much the data gathered will contribute to its 'richness'. Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised. These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments. Sample assessment instruments are included for Assessors in the Assessment Guidelines of this Training Package.
Critical aspects of evidence required to demonstrate competency in this unit
9.2)
Before the critical aspects of evidence are considered all prerequisites shall be met.
Evidence for competence in this unit shall be considered holistically. Each element and associated performance criteria must be demonstrated on at least two occasions in accordance with the 'Assessment Guidelines - UEE07'. Evidence shall also comprise:
A representative body of work performance demonstrated within the timeframes typically expected of the discipline, work function and industrial environment. In particular this shall incorporate evidence that shows a candidate is able to:

Implement Occupational Health and Safety workplace procedures and practices, including the use of risk control measures as specified in the performance criteria and range statement
Apply sustainable energy principles and practices as specified in the performance criteria and range statement
Demonstrate an understanding of the essential knowledge and associated skills as described in this unit. It may be required by some jurisdictions that RTOs provide a percentile graded result for the purpose of regulatory or licensing requirements.
Demonstrate an appropriate level of skills enabling employment
Conduct work observing the relevant Anti Discrimination legislation, regulations, polices and workplace procedures

Demonstrated consistent performance across a representative range of contexts from the prescribed items below:

Install explosion protected equipment and wiring systems as described in 8) and including:


A
Working safely in a potentially hazardous area including, the use of work permits and clearances, hazard monitoring and evacuation procedures, and plant and electrical isolation.


B
Handling and installing equipment and wiring in a manner that does not reduce the type of protection afforded by the equipment design.


C
Checking equipment against certification documents including conditions of certification relating to the safe use.


D
Verifying equipment has been installed according to installation design specifications.


E
Test installed cables/circuits to ensure they are safe.


F
Documenting installation completion.


G
Applying relevant contingency management skills.
Context of and specific resources for assessment
9.3)
This unit should be assessed as it relates to normal work practice using procedures, information and resources typical of a workplace. This should include:
OHS policy and work procedures and instructions.
Suitable work environment, facilities, equipment and materials to undertake actual work as prescribed by this unit.
These should also be part of the formal learning/assessment environment.
Note:
Where simulation is considered a suitable strategy for assessment, conditions must be authentic and as far as possible reproduce and replicate the workplace and be consistent with the approved industry simulation policy.

The resources used for assessment should reflect current industry practices in relation to installing explosion protected equipment and wiring systems.
Method of assessment
9.4)
This unit shall be assessed by methods given in Volume 1, Part 3 'Assessment Guidelines'.
Note:
Competent performance with inherent safe working practices is expected in the Industry to which this unit applies. This requires assessment in a structured environment primarily intended for learning/assessment which incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit.
Concurrent assessment and relationship with other units
9.5)
For optimisation of training and assessment effort, competency development in this unit may be arranged concurrently with unit:
UEENEEM080A Report on the integrity of explosion-protected equipment in a hazardous area

Competencies in installation of general low-voltage or extra-low voltage electrical/electronic equipment and wiring systems at AQF 3 or equivalent chosen as a prerequisite.
No information