Elements and Performance Criteria

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below.
Pumps may include:
Axial
Centrifugal
Gear
Reciprocating
Screw
Serviced may include:
Dismantling rod and gears, seals, bearings and relief valve
Identifying wear and deterioration
Measuring wear in cylinders, neck rings and rods
Protecting finished surfaces
Removing:
gland packing
studs, intact and broken
Replacing and adjusting seals
Valves may include:
Ball
Butterfly
Check
Diaphragm
Gate
Globe:
screw down non return
screw lift
Valve maintenance may include:
Examining seats, valves, spindles and glands
Gland packing:
selection
removal
repacking
Lapping valves and seats
Machining valves and seats
Air compressor is disassembled and inspected may include:
Coolers and cooling passages
Lubricating systems
Piston and rings
Suction and delivery valves and seats
Heat exchanger is disassembled and inspected may include:
Corrosion
Erosion
Fouling
Leakage
Provision for tube expansion
Diesel engine components are disassembled and inspected may include
Bearings
Cooling system
Crankshaft alignment
Liners
Lubrication system
Pistons
Rings
Valves
Routine maintenance on diesel engines may include:
Air intake system:
inspecting and changing air filters
inspecting turbocharger to make sure there is no fouling of compressor blades from crankcase gases
Cooling system:
fluid level checks
coolant sampling for trending analysis
draining, flushing and refilling system when required
Emissions systems:
inspecting crankcase ventilation systems, selective catalytic reduction (SCR) systems and diesel particulate filters (if so equipped)
Exhaust system:
inspecting for leaks, corrosion, wet stacking
Fuel system:
changing fuel filters, fuel injectors
checking water separators
Lubrication:
checking levels
changing oil, oil filters
taking oil samples for trending analysis to optimise oil change intervals and to detect engine wear
Mechanical systems:
inspecting resilient engine mounts and torsional couplings
generally inspecting for leaks, wear or deterioration
Operating systems:
downloading data from digital engine management system to note and review alarm conditions
Valves and heads:
inspecting, adjusting and recording valve train wear for trending analysis
inspecting and recording cylinder head wear for trending analysis
Diesel engine components are refurbished may include:
Air start valves
Cylinder heads
Exhaust valves
Fuel injectors
Relief valves
Components of turbocharger may include:
Air casing
Air filters
Bearings
Diffuser
Gas inlet grid
Impeller
Inducer
Nozzle ring
Rotor
Volute
Inspection requirements for marine boiler may include:
Fire side
Water side
Inspection requirements for marine refrigeration unit may include:
Compressors
Condensers
Evaporators
Expansion valves
Oil separators
Components of lubricating system may include:
Settling tank
System bearings
System filters
Deck machinery may include:
Cranes
Lifeboat davits and gear
Mooring winch
Winch
Windlass

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, the required skills and knowledge, the range statement and the Assessment Guidelines for the Training Package.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the Elements, Performance Criteria, Required Skills, Required Knowledge and include:
ensuring currency of relevant WHS/OHS skills and knowledge
ensuring currency of relevant legislative and regulatory knowledge
initiating timely action in response to defects or damage.
Context of and specific resources for assessment
Performance is demonstrated consistently over time and in a suitable range of contexts.
Resources for assessment include access to:
industry-approved marine operations site where maintaining and repairing shipboard machinery and equipment can be conducted
tools, equipment and personal protective equipment currently used in industry
relevant regulatory and equipment documentation that impacts on work activities
range of relevant exercises, case studies and/or other simulated practical and knowledge assessments
appropriate range of relevant operational situations in the workplace.
In both real and simulated environments, access is required to:
relevant and appropriate materials and equipment
applicable documentation including workplace procedures, regulations, codes of practice and operation manuals.
Method of assessment
Practical assessment must occur in an:
appropriately simulated workplace environment and/or
appropriate range of situations in the workplace.
A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate to this unit:
direct observation of the candidate maintaining and repairing shipboard machinery and equipment
direct observation of the candidate applying relevant WHS/OHS requirements and work practices.
Guidance information for assessment
Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended.
In all cases where practical assessment is used it should be combined with targeted questioning to assess Required Knowledge.
Assessment processes and techniques must be appropriate to the language and literacy requirements of the work being performed and the capacity of the candidate.