RIIDES307
Test, determine the cause and rectify excessive emission levels on diesel engine systems

This unit covers the testing, determining the cause of and rectifying excess emission levels of diesel engine systems for underground coal mines. It includes: planning and preparing for and carry out emission testing; determination of the cause of excessive emission levels and carrying out maintenance to rectify the situation; and the completion of post work activity requirements

Application

This unit is appropriate for those undertaking the inspection, testing and maintenance of diesel engine systems for underground coal mines


Prerequisites

Metal, mechanical, electrical or automotive trades or mechanical or electrical engineering


Elements and Performance Criteria

1. Plan for testing and/or rectification tasks

1.1 Access, interpret and apply compliance and other documentation relevant to the testing, determining the cause of and rectification of excessive emission levels on diesel engine systems

1.2 Obtain, interpret and clarify work requirements for the completion of tasks

1.3 Resolve coordination requirements with others at the site prior to commencing and during work activities

2. Prepare for testing and/or rectification tasks

2.1 Inspect and prepare work area in coordination with others

2.2 Identify and obtain itemsand tools required for the safe, effective and efficient conduct of the tasks.

2.3 Identify and arrange support required for the safe, effective and efficient completion of the tasks

2.4Select and usepersonal protection equipment appropriate to the task

2.5 Carry out required equipment pre-start and inspection procedures

2.6 Carry out isolation and lock-out of all equipment necessary for the safe execution of tasks

2.7 Recognise and respond to hazardous and emergency situations

3. Carry out testing of emission levels and determine the cause of excessive emission levels

3.1 Select and operate testing equipment and methods

3.2 Carry out testing on diesel engine systems

3.3 Test and report on the performance of diesel oxidation catalyst system

3.4 Determine the cause of any excessive emission levels

3.5 Report outcomes of testing to appropriate person

4. Rectify excessive emission levels

4.1 Select and use maintenance items, tools and equipment

4.2 Carry out maintenance to rectify excessive emission levels on diesel engine systems

5. Complete post-work activity requirements

5.1 Tidy up the work area

5.2 Dispose of used oil, lubricant and other waste

5.3 Return and secure all tools and re-usable items

5.4 Complete and maintain inspection, testing and maintenance records

Required Skills

Required skills

Specific skills are required to achieve the performance criteria in this unit, particularly for the application in the various circumstances in which this unit may be applied.

This includes the ability to carry out the following as required to test, diagnose the cause of and rectify excessive emissionlevels on diesel engine systems used:

apply legislative, organisation and site requirements and procedures

apply site risk, statutory compliance, health, safety, environmental, quality and communication requirements and procedures

apply site and manufacturer’s requirements and procedures

apply surface and underground worksite hazard identification and risk management requirements and procedures

apply task hazard identification and risk management requirements and procedures

apply technical literacy

interpret and apply technical and scientific/industry terminology

communicate with those providing support

apply work area and equipment inspection procedures

apply work area safeguarding options and requirements

apply isolation and lock-out requirements and procedures

apply hazard and emergency procedures

apply site service and maintenance reporting requirements and procedures

work wearing appropriate personal protective equipment

use tools required for the performance of inspection, testing and maintenance tasks

use calibrated or verified instruments for testing

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit, particularly its application in a variety of circumstances in which the unit may be used.

This includes knowledge of the following, as required to test, diagnose the cause of and rectify excessive emissionlevels on diesel engines:

site risk, statutory compliance, health, safety, environmental, quality and communication requirements and procedures

limitations on allowable maintenance including work in hazardous environments

limitations on allowable modifications and the required controls and procedures

site and manufacturer’s requirements and procedures

health effects of diesel exhaust emissions including;

gaseous emissions

diesel particulate matter:

allowable limits (base line limits, raw exhaust and general body)

emission test procedures (AS/NZS3584 & MDG 29)

raw exhaust test procedure

general body test procedure

ventilation requirements for emission dilution

mine management system to control emissions

defects and failure modes that may cause non-compliant emissions (including increased backpressure)

principles employed to limit the creation of and to manage harmful emissions from diesel engines that may include;

engine settings and adjustments

engine system maintenance

electronic controls (ECM) and injection systems

the emissions effects of increased air induction systems, including: super-charging and turbo-charging

exhaust gas re-circulation (EGR)

diesel oxidisation catalyst (DOC)

selective catalytic reducer (SCR)

particulate (smoke) filter (DPM)

use of water-based conditioners

the effect of distillate (diesel fuel) types on emissions

tools required for the performance of inspection, testing and maintenance tasks

provisions of AS/NZS3584.1, 2 and 3 relating to fasteners and joints

recognise the requirements and performance of various types of fasteners, including bolts, studs, threads and washers

site inspection, testing and maintenance support requirements and availability

site work area inspection requirements

site work area safeguarding options and requirements

site isolation and lock-out requirements and procedures

site hazard and emergency procedures

site inspection, testing and maintenance reporting requirements and procedures

site inspection, testing and maintenance record procedures

site requirements and procedures for working in isolation

site requirements for the use of personal protective equipment

Evidence Required

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 the testing, determination of the cause of and rectification of excessive emissionlevels on diesel engine systems

implementation of requirements, procedures and techniques for the safe, effective and efficient completion of the testing, determination of the cause of and rectification of excessive emissionlevels on diesel engines systems

working with others to undertake and complete the testing, determination of the cause of and rectification of excessive emissionlevels on dieselengines systems that meets all of the required outcomes

consistent timely completion of the testing, determination of the cause of and rectification of excessiveemissionlevels on diesel engine systems that safely, effectively and efficiently meets the required outcomes

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.

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.

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.

Where applicable, physical resources should include equipment modified for people with disabilities.

Access must be provided to appropriate learning and/or 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 and/or oral assessment of the candidate’s required knowledge

observed, documented and/or first hand testimonial evidence of the candidate’s:

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

consistently achieving the required outcomes

first hand testimonial evidence of the candidate:

working with others to undertake and complete the testing, determination of the cause of and rectification of excessive emissionlevels on diesel engine systems

Guidance information for assessment

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


Range Statement

Compliance and other documentation to include:

certification documentation

registration documentation

legislative, organisation and site requirements and procedures

manufacturer’s specifications and guidelines

Australian Standards and Guidelines, including: AS/NZS3584 and MDG 29

codes of practice

Employment and Workplace Relations legislation

Equal Employment Opportunity and Disability Discrimination legislation

Testing may include:

testing the composition of exhaust emissions within the exhaust stream under load conditions

testing the diesel engine system for;

NOx (oxides of nitrogen),

CO (carbon monoxide),

CO2 (carbon dioxide)

diesel particulate matter

Determining the cause may include:

root cause analysis

troubleshooting techniques

Rectification is:

the combination of actions carried out to restore a diesel engine system to, a condition in which it is able to meet the requirements of the relevant specification and perform its required function

Emissions may include:

NOx (oxides of nitrogen)

CO (carbon monoxide)

CO2 (carbon dioxide)

diesel particulate matter

Excessive emissions may be contributed to by:

inlet or exhaust restriction

engine wear

component failure

contaminated or non-compliant fuel

incorrect fuel/air ratio

lubrication oil in the combustion chamber

the product of abnormal combustion (unintended fuels being breathed by an engine)

Diesel engine systems are:

diesel engines for underground coal mines and their:

inlet systems

exhaust systems

cooling systems

starting systems

shut-down and protection systems

electrical or electronic devices

Work requirements may come from briefings, handovers, and work orders and may include:

service and maintenance schedules

production requirements

nature and scope of tasks

achievement targets

operational conditions

operational requirements

site layout and out of bounds areas

worksite inspection requirements

plant or equipment defects

hazards and potential hazards

coordination requirements or issues

Others may include:

yard persons

processing plant operators

mobile plant operators

other maintenance personnel

Inspect and prepare work area may include:

determining if the proposed work area is a designated safe area

identification of hazards, including:

workshop work area hazard

underground work area hazards

work activity hazards

selection and implementation of control measures for the hazards identified

safeguarding site and non-site personnel by:

erection of barricades and posting of signs

selection of appropriate equipment to ensure personnel safety and protection

Items may include:

replacement parts

fasteners

packing materials

Tools may include:

hand tools

power tools

special tools

testing equipment

Support may include:

other site personnel

contractors

cranes

other lifting equipment

Personal protection equipment may include:

hard hats

eye protection

hearing protection

breathing apparatus

gas/fume masks

prescribed footwear

Pre-start and inspection procedures include:

checking:

cleanliness, particularly coal dust

diesel and other flammable liquid leaks

coolant leaks in radiator or radiator hoses

coolant level

guards are in place and secure

engine oil level is correct

Hazardous and emergency situations may include:

working alone

personal injury

fire

explosions

emissions

electrical

noise

dust

noxious gases

environmental

chemical

Maintenance is to include:

service

adjust

replace

Maintenance may include:

repair

overhaul

modify

Records may include:

inspection and test results

defect identified

defect rectification carried out

item consumed

hazard/risk management reports


Sectors

Coal Mining (Diesel Engine Systems Maintenance)


Employability Skills

This unit contains employability skills.


Licensing Information

Not applicable.