Modification History
Not Applicable
Unit Descriptor
Unit Descriptor |
1 ) 1 .1 ) Descriptor |
This unit covers the installation, calibration and response checking of permanent gas detection equipment. It requires the ability to match equipment with that specified for a given location and to use manufacturer manuals to maintain accuracy of gas monitoring devices. This unit is directly equivalent to the Unit 2.6Install and maintain integrity of fixed gas detection 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. |
Application of the Unit
Application of the Unit |
4 ) |
This unit augments other formally-acquired competencies in a relevant industry and shall be used only in conjunction such competencies. It applies to electrical, instrumentation, electronics and data communication installation and maintenance job functions at AQF 3 level or higher. Note: Examples of relevant industries include aviations, electrical installation and maintenance, fuel storage and dispensing industrial process, instrumentation and control, marine, material handling and storage, mining, and petrochemical. |
Licensing/Regulatory Information
1 .2 ) License to practice |
The skills and knowledge described in this unit require a license to practice in the workplace where plant and equipment operate at voltage above 50 V a.c. or 120 V d.c. Other conditions related to communications, electrical work, fire protection, gas work, high voltage work, refrigeration/air conditioning and security may apply in some jurisdictions subject to regulations. Practice in the workplace and during training is also subject to regulations directly related to occupational health and safety and where applicable contracts of training such as apprenticeships. |
Pre-Requisites
Prerequisite Unit(s) |
2) |
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2.1) Competencies |
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Granting competency in this unit shall be made after or concurrently with confirming competency in any one of the following units. |
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UEENEEM023A |
Install explosion-protected equipment and wiring systems coal mining |
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OR |
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UEENEEM024A |
Install explosion-protected equipment and wiring systems gas atmospheres |
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OR |
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UEENEEM025A |
Install explosion-protected equipment and wiring systems dust atmospheres |
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OR |
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UEENEEM027A |
Maintain equipment in hazardous areas coal mining |
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OR |
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UEENEEM028A |
Maintain equipment in hazardous areas gas atmospheres |
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OR |
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UEENEEM029A |
Maintain equipment in hazardous areas dust atmospheres. |
Employability Skills Information
Employability Skills |
3 ) The required outcomes described in this unit of competency contain applicable facets of Employability Skills. The Employability Skills Summary of the qualification in which this unit of competency is packaged will assist in identifying Employability Skill requirements. |
Elements and Performance Criteria Pre-Content
6 ) Elements describe the essential outcomes of a unit |
Performance criteria describe the required performance needed to demonstrate achievement of the element. Assessment of performance is to be consistent with the evidence guide. |
Elements and Performance Criteria
ELEMENT |
PERFORMANCE CRITERIA |
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1 |
Prepare for installation gas detection equipment. |
1.1 |
OHS policies and procedures for preparing to work in a hazardous area are followed. |
1.2 |
Location in which gas detection of equipment is to be installed is determined from design documents. |
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1.3 |
Gas detection equipment markings are checked to ensure they conform to design specifications and certification documents. |
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1.4 |
Certification document supplied with each item of gas detection equipment is collected for inclusion in site records. |
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2 |
Install gas detection equipment. |
2.1 |
OHS policies and procedures are followed. |
2.2 |
Gas detection equipment is installed in appropriate locations and in conformance with design specifications, standards and within the limits specified by the equipment certification and manufacturer. |
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2.3 |
Gas detection is installed in a manner that does not reduce the type of protection afforded by any associated explosion-equipment design. |
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3 |
Response checking and calibration of gas detection equipment. |
3.1 |
OHS policies and procedures are followed. |
3.2 |
Gas detection equipment is formally checked and calibrated periodically in accordance with established site requirements and instrument accuracy. |
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3.3 |
Installation and maintenance of gas detection equipment is documented in accordance with requirements and forwarded to personnel responsible for compiling verification dossier. |
Required Skills and Knowledge
REQUIRED SKILLS AND KNOWLEDGE |
7) This describes the essential skills and knowledge and their level, required for this unit. |
Evidence shall show that knowledge has been acquired of safe working practices and installing and maintaining integrity of fixed gas detection equipment. All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies. KS01-EM077A Gas detection installation and maintenance Evidence shall show an understanding of gas detection installation and maintenance to an extent indicated by the following aspects: T1 Explosion-protection equipment — Ex certification schemes encompassing:
T2 Flameproof (Ex ‘d’) explosion-protection technique encompassing:
T3 Increased safety (Ex ‘e’) explosion-protection technique encompassing:
T4 Non-sparking (Ex ‘n’) explosion-protection technique encompassing:
T5 Intrinsic safety (Ex ‘i’) explosion-protection technique encompassing:
T6 Pressurization (Ex ‘p’) explosion-protection technique encompassing:
T7 Enclosures for dusts (Ex ‘tD’) - explosion-protection technique encompassing:
T8 Common characteristics of explosion-protection techniques encompassing:
T9 Preparation to install and maintain explosion-protected equipment in hazardous areas encompassing:
T10 The relationship between explosion-protected equipment, their certification documents and required locations given in specifications and layout drawings and/or written instructions encompassing:
T11 Installation Standards and requirements applicable to hazardous encompassing:
T12 Maintenance procedures in hazardous areas that will ensure the integrity of the explosion-protection technique encompassing:
T13 Cable termination types suitable for use in hazardous areas encompassing:
T14 Terminating cables suitable for use in hazardous areas encompassing:
T15 Techniques for the installation and maintenance of fixed gas detection equipment encompassing:
T16 Location of fixed sample points or sensors encompassing:
T17 Gas and vapour releases encompassing—
T18 Common problems with fixed gas detectors. T19 Calibration and response checking. T20 Factors to consider in the evaluation and selection of portable and fixed gas detection equipment encompassing:
T21 Detecting gases and vapours encompassing:
T22 Oxygen deficiency and effects on safety encompassing:
T23 Measuring principles of catalytic sensors, electrochemical sensors, infrared sensors and semi-conductor sensors encompassing:
NOTE: Detailed information on gas detection is given in AS/NZS 60079.29.2. |
Evidence Guide
EVIDENCE GUIDE |
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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. |
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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. |
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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. |
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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:
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A |
Working safely in a potentially hazardous area or confined space including the use of work permits and clearances, hazard monitoring and evacuation procedures and plant and electrical isolation |
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B |
Handling and installing equipment and wiring in a manner that does not reduce the integrity afforded by the equipment design |
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C |
Checking equipment against certification documents and design specifications |
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D |
Documenting installation and maintenance activities |
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E |
Following procedures to maintain the integrity of gas detection |
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F |
Applying relevant contingency management skills. |
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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:
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. |
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The resources used for assessment should reflect current industry practices in relation to installing and maintaining integrity of fixed gas detection equipment. |
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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. |
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Concurrent assessment and relationship with other units |
9 .5 ) |
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For optimisation of training and assessment effort, competency development in this unit may be arranged concurrently with any prerequisite unit. |
Range Statement
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 classified hazardous area and explosion-protection techniques specified for at least one of the prerequisites. |
The following constants and variables included in the element/performance criteria in this unit are fully described in the Volume 2, Part 2.1. |
Unit Sector(s)
Not Applicable
Competency Field
2 .2 ) Literacy and numeracy skills Participants are best equipped to achieve competency in this unit if they have reading, writing and numeracy skills indicated by the following scales. Description of each scale is given in Volume 2, Part 3 'Literacy and Numeracy' |
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Reading |
3 |
Writing |
3 |
Numeracy |
3 |
2.2) Literacy and numeracy skills
Competency Field |
5 ) |
Hazards |