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Elements and Performance Criteria

  1. Prepare to work in hazardous area.
  2. Observe condition of explosion-protection system area.
  3. Take actions to limit risk of an explosion.

Required Skills

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 reporting on the integrity of explosion protected equipment in hazardous areas

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies

KSEMA Hazardous areas and explosionprotection principles

Evidence shall show an understanding of hazardous areas and explosionprotection principles including working safely in hazardous areas principles of the following explosionprotection techniques and visible conditions of explosionprotection equipment that indicate the protection is void and changes in the nature of the explosion hazard that may render the explosionprotection unsafe to an extent indicated by the following aspects

T Occupational Health and Safety responsibilities related to hazardous areas encompassing

the main features and purpose of a clearance to work system includes hot work permit systems

typical safety procedures that should be followed before entering a hazardous area

the purpose of gas detectors and their limitations

effects of temperature on gas and vapour detection

frequency of monitoring for presence of gas or vapours ie effects of temperature rise

factors affecting the accuracy of gas detectors for example contamination condensation temperature

safety in use of gas detectors for example read and run concept

the safety precautions to be taken when working in a hazardous area

T The roles of the parties involved in the safety of hazardous areas encompassing

common Acts and Regulations related to the safety of hazardous areas and the Authorities responsible for their implementation

where assistance and further information can be obtained to assist persons with hazardous area responsibilities for example Standard bodies experienced consultants and

the hazardous area responsibilities of the owner of premises in which a hazardous area exists the occupier of premises in which a hazardous area exists enterprises and personnel engaged in installation andor maintenance of explosionprotection systems enterprises and personnel engaged in the classification of hazardous areas andor design of explosionprotection systems enterprises and personnel engaged in the overhaul modification andor assessment of explosionprotected equipment enterprises and personnel engaged in the inspection of explosionprotection installations manufacturers of explosionprotected equipment designated authorities insurers

T Properties of combustible substances and their potential to create an explosive hazard encompassing

condition in the workplace that will lead to an explosion

the terms combustion ignition and propagation

explosive range of substances encountered in the workplace ie LELUEL

explosive parameters of substances as given in tables of substance properties

Note Combustible materials are gases vapours from liquids and dusts flash point

the difference between gases and vapours and

the toxic nature of gases and vapours and potential harmful consequences

T The nature of hazardous areas encompassing

the Standards definition of a hazardous area

the recommended methods for classifying the type and degree of explosion hazard in an area

hazardous area classifications as defined by Standards and

factors that are considered when a hazardous area is classified

the basics of how explosionprotection is achieved by the methods of exclusion containment energy limitation dilution avoidance of ignition source

T Explosiveprotected equipment encompassing

The principles of each explosionprotection technique the methods used and how each technique works Flameproof Ex d Increased safety Ex e Nonsparking Ex n Intrinsic safety Ex i and Pressurization Ex p for gas atmospheres and Dustexclusion enclosures Ex tD Pressurization Ex pD Encapsulation Ex mD and Intrinsic safety Ex iD for dusts

How explosionprotected equipment is identified by the Ex symbol marked on the equipment including old equipment and equipment certified in another country

Visible conditions or actions that would void the explosionprotection provided by a particular technique

T Explosionprotection visual checks encompassing

occupational health and safety procedures to be followed before entering hazardous areas and while conducting visual inspection

Visible defects in explosionprotected equipment and wiring

Conditions that may indicate a change in a given explosion hazard

Reporting defects in explosionprotected equipment and wiring the purpose of a verification dossier and various ways for reporting defects in explosionprotected equipment and wiring

procedures to be followed in the event of a change in the explosion hazard

Evidence Required

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

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 industrypreferred 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 substancematerial 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 howhow 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

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 UEE Evidence shall also comprise

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

Report on the integrity of explosionprotected equipment in hazardous areas as described in and including

A

Following work permits and clearance procedures

B

Monitoring hazards and following evacuation procedures

C

Correctly operation of plant and machinery

D

Following plant and electrical isolation procedures

E

Identifying visual damage or deterioration of explosionprotected equipment

F

Reporting visual defects

G

Applying relevant contingency management skills

Context of and specific resources for assessment

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 learningassessment 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 reporting on the integrity of explosion protected equipment in hazardous areas

Method of assessment

This unit shall be assessed by methods given in Volume Part 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 learningassessment 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

For optimisation of training and assessment effort competency development in this unit may be arranged in combination with other competencies required by a given industry or enterprise for plant or machinery operation or in relation to installation maintenance or service functions


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.

Generic terms used throughout this Vocational Standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms that apply are given in Volume 2, Part 2.1.