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 classifying hazardous areas

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

KSEMA Hazardous areas classification

Evidence shall show an understanding of processes involved in gathering and analysing technical data to classify nonspecific hazardous areas The following aspects indicate the extent of understanding required

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 The process of classifying hazardous areas encompassing

methods by which an area can be classified

the characteristicsattributes of an area that should be considered in the classification process for example type of process nature of plant source and nature of release

the requirements and Standards for classifying a hazardous area and

the responsibilities of the owneroccupiers for classification of a hazardous area

T The likelihood zoning or risk assessment method of an explosive hazard encompassing

ignition properties of materials relevant to determining the likelihood and extent of an explosive hazard

sources for obtaining data on ignition properties of materials under the conditions in which they could be present in a given process

methods for assessment and calculation of factors such as release rate ventilation and dispersion characteristics and and

means for reducing hazard risk

T The extent of an explosive hazard and classifying an area accordingly encompassing

the extent of zones for an area given data on the likelihood of the explosive hazard for that area

requirements for documenting the classification of a hazardous area and

the extent of the zones temperature classes and gas groups on site drawings in a hazardous area

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

Classify hazardous areas as described in and including

A

Accessing necessary information and identifying hazardous products involved in a given process explosive properties of materials involved in a given process and potential sources and characteristics of release of hazardous products

B

Analysing data in the context of explosion risk

C

Determining area delineation and documenting area classifications

D

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 classifying 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 concurrently with competencies related to gathering and analysing technical data and using this data for assessing risk