Required skills

Specific skills are required to achieve the Performance Criteria of this unit particularly for its application in the various circumstances in which this unit may be used This includes the ability to carry out the following as required to implement the gas management plan

apply legislative organisation and site requirements and procedures for implementing the gas management plan

access interpret and apply technical information

access and analyse gas information related to the mine including archival and historical information

interpret and apply mathematical and scientific theorems laws related to gas

collect collate and evaluate gas management data

conduct investigation and prepare reports

communicate effectively in the workplace

access evaluate and apply data from monitoring systems and equipment

operate hand held monitoring equipment

implement gas management training requirements programs systems and procedures

apply risk management processes and techniques

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit particularly for its application in the various circumstances in which this unit may be used This includes knowledge of the following as required to implement the gas management plan

legislative and site requirements for gas management including air quality and quantity maximum and minimum values control and distribution flammable gas limits ventilation fans gas monitoring inspections and recording reporting

the methods of mine ventilation and their applications limitations including exhaust force antitropal homotropal flank returns ascensional decensional bleeder ZUY systems and other combinations

the methods of panel gas management and their applications limitations including homotropal and antitropal and in conjunction with these the use of goaf bleed or back return auxiliary fans coursed ventilation narrow side wide side machine mounted scrubber systems compressed air venturis and bleeders

the impact of mining techniques

the impact of mine and panel design on gas management

the impact of differing geological features and conditions on gas management including faults dykes intrusions and strata deformities

the impact of coal characteristics and coal seam gradients on mine gas management systems

mine gases the types and their characteristics sources physiological effects and methods of detection

mine fires the types and possible impacts on gas management

mine explosions the types ignition sources and possible impacts on gas management

pressure changes causes and the impacts on gas management

heat humidity the sources and factors which may impact on mine gas management

mine fans fan types applications and limitations

gas control devices the types purposes design criteria and specifications distribution placement criteria and limitations

degassing methods of control including brattice auxiliary fans compressed air venturis sails hurdles and bleeders

fixed gas monitoring systems types uses and limitations

portable monitoring equipment types characteristics uses and limitations

computerbased systems for mine gas analysis

Gas Management Plan development requirements and processes

techniques for determining alarms and trigger points levels

audit and review processes and techniques

site document control requirements

emergency response and evacuation procedures

the general use and application of ventilation theory including

gas laws including Charles and Boyle

natural ventilation

Cowards Triangle

Grahams Ratio

Ellicott Diagram

gas make

Tricketts Ratio

leakage

psychrometry and heat

COCO

Kirchoffs laws

geological data

the impact of differing geological features and conditions on outburst including faults dykes intrusions and strata deformities

methods of control of outburst

the methods of gas drainage and their applications limitations against the mine design mine and panel ventilation systems systems of mining and current and future mine development

the impacts of gas drainage on dust generation during mining

impacts of intersecting and intersected holes and hole design

principles of ventilation management

mine and goaf ventilation systems

underground water management techniques

site environmental monitoring requirements

risk management procedures

inertisation techniques

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to worksite operations and satisfy all of the requirements of the performance criteria required skills and knowledge and the range statement of this unit and include evidence of the following

knowledge of the requirements procedures and instructions for implementing the gas management plan

implementation of procedures and techniques for the safe effective and efficient implementation of the gas management plan

the identification of the relevant information and scope of the work required to meet the required outcomes

the identification of viable options and the selection of gas management plan elements that best meet the required outcomes

working with others to undertake and complete the implementation of the gas management plan

consistent successful implementation of the gas management plan

Context of and specific resources for assessment

This unit must be assessed in the context of the work environment Where personal safety or environmental damage are limiting factors assessment may occur in a simulated environment provided it is realistic and sufficiently rigorous to cover all aspects of workplace performance including task skills task management skills contingency management skills and job role environment skills

Assessment of this competency requires typical resources normally used in a resources and infrastructure sector environment Selection and use of resources for particular worksites may differ due to the site circumstances

The assessment environment should not disadvantage the participant For example language literacy and numeracy demands of assessment should not be greater than those required on the job

Customisation of assessment and delivery environment to sensitively accommodate cultural diversity

Aboriginal people and other people from a non English speaking background may have second language issues

Where applicable physical resources should include equipment modified for people with disabilities Access must be provided to appropriate learning andor assessment support when required

Method of assessment

This unit may be assessed in a holistic way with other units of competency The assessment strategy for this unit must verify required knowledge and skill and practical application using more than one of the following assessment methods

written andor oral assessment of the candidates required knowledge to apply in undertaking of the implementation of the gas management plan

observed documented andor first hand testimonial evidence of the candidates

implementation of appropriate requirement procedures and techniques for the safe effective and efficient achievement of required outcomes

identification of the relevant information and scope of the work required to meet the required outcomes

identification of viable options and the selection of gas management plan elements that best meet the required outcomes

consistent achievement of required outcomes

first hand testimonial evidence of the candidate

working with others to undertake and complete the implementation of the gas management plan

provision of clear and timely required support and advice on the implementation of the gas management plan

Guidance information for assessment

Consult the SkillsDMC User Guide for further information on assessment including access and equity issues

Relevant compliance documentation may include:

Interpret is defined as: the understanding needed by the person within their job role.

Gas Management Plans establish procedures for maintaining a safe environment may include:

Gas management training applies to:

Gas management procedures may include those for:

Hazard is defined as: a source of potential harm or a situation with a potential to cause loss (definition from AS/NZS 4360:1999 Risk Management).

Hazards may include:

Mine Atmosphere refers to the atmosphere in all areas in the general mine ventilation district and beyond into waste working and goafs / gobs in the mine.

Action (alarm or trigger) level is a generic term used to describe a level determined at the mine site at which pre-determined action is initiated or a response made.

Audit is defined as: a systematic examination against defined criteria to determine whether activities and related results conform to planned arrangement, and whether these arrangements are implemented effectively and are suitable to achieve the organisation's policy and objectives (AS/NZS 4804: 2001).

Risk is defined as: the chance of something happening that will have an impact upon objectives. It is measured in terms of consequences and likelihood (definition from AS/NZS 4360:1999 Risk Management).

Principles of mine design may include:

Standard operating procedures (SOP) are also known as safe working procedures, safe operating procedures and standard working procedures.

Mine gases may include:

Gas make characteristics may include:

Gas make characteristics may include:

Explosion control devices may include:

Gas management devices and methods may include:

Geological conditions may include:

Coal seam characteristics may include inherent factors such as:

Geological and physical conditions of the seam and surrounding strata which may contribute to outburst potential may include:

Mine atmosphere monitoring may include:

Infrastructure may include:

Types of fires may include:

Ignition sources may include:

Disruptions / ventilation pressure changes may include those resulting from:

Effect of re-circulation may include:

Criteria for safe mine ventilation may include:

Monitoring devices may include:

Monitoring includes that related to:

Methods of ventilation may include:

Alarm systems and action plans may include those for:

Maintenance of the ventilation system may include: