Elements and Performance Criteria

Compliance and other documentation include:
certification documentation
approval documentation
legislative, organisation and site requirements and procedures
manufacturer’s specifications and guidelines
Australian Standards, including: AS/NZS3584 and AS 4291
codes of practice
Employment and Workplace Relations legislation
Equal Employment Opportunity and Disability Discrimination legislation
Inspection may include:
checking the marking of parts/components
inspecting the fuel shutdown linkages to ensure they are in good condition and fully operative
Testing may include:
conducting exhaust conditioner/flametrap, low-water, shutdown tests (both low water test systems are tested separately)
checking that all gauges and indicators are operating correctly and are clearly visible
checking the proper operation and function of;
low oil engine pressure detection sensor
coolant loss protection sensor
coolant over temperature protection sensor
confirming that the manual fuel valve operates correctly to stop the diesel within the time determined by the original type testing including a reasonable margin
test that the air receiver safety (pressure relief) valves are in place, not blocked/seized and operating correctly
checking the engine system shuts down at, or higher than, the minimum shutdown water level, (record the water levels after shut-down)
testing the emergency safety shutdown system to ensure that the engine stops under the operation of the emergency safety shutdown system working in isolation of other engine safety shutdown systems, record the time taken for the engine to stop with the engine running at high idle, (Note: The diesel engine system manufacturer may provide test instructions to minimise the risk of engine damage during testing (see AS/NZS3584.2)
checking the proper operation and function of the low oil engine pressure detection sensor, and recording the engine oil pressure at the time of shutdown
checking the proper operation and function of the coolant loss detection sensor, and recording the time taken to cause the engine to shut down
checking the proper operation and function of the coolant over-temperature sensor, and recoring the coolant temperature at which the engine shut down, (Note: Testing this sensor by defeating other sensors and overheating the diesel engine system may be hazardous or cause damage to the diesel engine system. It is recommended that the sensor be removed from the engine and tested in heated water while remaining connected to the engine shutdown system)
checking the proper operation and function of the exhaust gas over-temperature sensor, and recording the exhaust temperature at which the engine shut down
confirming that all of the engine shutdown system fault indicators properly indicate each of the faults simulated in the foregoing tests
Maintenance is:
the combination of actions carried out to retain a diesel engine system in, or to restore it to, conditions in which it is able to meet the requirements of the relevant specification and perform its required function
Maintenance may include authorised:
service
adjusting
replacing
repair
overhaul
modification
Safety shutdown systems may include:
engine safety shutdown system (fuel shutdown system), including:
manual actuation system
fault indication system
emergency safety shutdown system, may be:
a strangler valve
inert gas injection
decompression
manually actuated
automatically operated
manual fuel shut-off valve
sensing devices, including:
engine cooling system
engine oil pressure
water-based flametraps
exhaust cooling
particulate filter
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:
nature and scope of tasks
procedures to be applied
quality standards to be applied
available resources
achievement targets
operational conditions
site layout
out-of-bounds areas
designated safe areas
explosion-risk zones
hazardous areas
other hazards and potential hazards
obtaining permits required
worksite inspection requirements
lighting conditions
plant or equipment defects
coordination requirements or issues
Inspect and prepare work area may include:
determining if the proposed work area is a designated safe area
identification of explosion-risk zones
identification of hazardous areas
identification of hazards, including:
workshop work area hazard
underground work area hazards, and
work activity hazards
fire
explosion
emissions
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
Others may include:
other maintenance personnel
support providers
contractors
underground production personnel
mobile or fixed plant operators
Items may include:
authorised replacement parts
fasteners as specified in manufacturer’s drawings
packing materials
Tools may include:
hand tools
power tools
special tools
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
conduct exhaust conditioner/flametrap, low-water, shutdown tests
Hazardous and emergency situations may include:
working alone
personal injury
fire
explosions
emissions
electrical
noise
dust
noxious gases
environmental
chemical
Diagnose faults may include:
root cause analysis
troubleshooting techniques
Routine maintenance is to include:
servicing, including cleaning
adjusting
replacing
Overhaul may include:
removal
dismantling
cleaning
inspecting
replacing, eg:
valves sensors exhaust gas recirculation
particulate filters
replacement element-type filter testing, including:
individual devices system operation and function reassembly
reinstallation
Records may include:
inspection and test results
defect identified
defect rectification carried out
item consumed
hazard/risk management reports

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 inspection, testing and maintenance of safety shutdown systems on diesel engine systems
implementation of requirements, procedures and techniques for the safe, effective and efficient completion of the inspection, testing and maintenance of safety shutdown systems on diesel engine systems
working with others to undertake and complete the inspection, testing and maintenance of safety shutdown systems on diesel engine systems that meets all of the required outcomes
consistent timely completion of the inspection, testing and maintenance of safety shutdown systems 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 inspection, testing and maintenance of safety shutdown systems on diesel engine systems
Guidance information for assessment
Consult the SkillsDMC User Guide for further information on assessment including access and equity issues.