Application
This unit involves the skills and knowledge required to maintain and repair marine electrical and electronic equipment on a vessel. This includes carrying out routine maintenance of marine generators, switchboards, electric motors, motor starters, direct current (DC) electrical systems and electrical distribution systems; and identifying faults in automated control systems.
This unit applies to the work of a Marine Engineer Class 3 Near Coastal.
This unit has links to legislative and certification requirements.
Elements and Performance Criteria
Elements describe the essential outcomes. | Performance criteria describe the performance needed to demonstrate achievement of the element. | ||
1 | Maintain marine generators | 1.1 | Safety requirements associated with working on marine electrical generation systems are complied with |
1.2 | Marine generators are inspected using appropriate manuals and drawings according to regulatory, organisational and manufacturer requirements | ||
1.3 | Routine maintenance and testing of marine generators is performed according to regulatory, organisational and manufacturer requirements | ||
1.4 | Alternators are synchronised according to organisational and manufacturer requirements | ||
1.5 | Testing and maintenance records are maintained according to regulatory, organisational and manufacturer requirements | ||
2 | Maintain marine switchboards | 2.1 | Safety requirements associated with handling circuit breakers are complied with |
2.2 | Routine maintenance is performed on main circuit breaker according to with regulatory, organisational and manufacturer requirements | ||
2.3 | Faults in circuit breakers are detected and corrected according to regulatory, organisational and manufacturer requirements | ||
2.4 | Testing and maintenance records are maintained according to regulatory, organisational and manufacturer requirements | ||
3 | Maintain marine electrical motors | 3.1 | Safety requirements associated with working on marine electrical motors are complied with |
3.2 | Equipment required for maintenance of electrical motors is selected and checked for serviceability | ||
3.3 | Routine maintenance procedures are applied on marine electrical motors according to regulatory, organisational and manufacturer requirements | ||
4 | Test marine electrical motor starters | 4.1 | Safety requirements associated with working on marine electrical motor starters are complied with |
4.2 | Faults in electrical motor starters are detected and rectified according to regulatory, organisational and manufacturer requirements | ||
4.3 | Starting and running current load testing is performed on electrical motors according to regulatory, organisational and manufacturer requirements | ||
4.4 | Procedures for finding start and finish of electrical motor windings are applied according to regulatory, organisational and manufacturer requirements | ||
4.5 | Testing and maintenance records are maintained according to regulatory, organisational and manufacturer requirements | ||
5 | Maintain marine electrical distribution systems | 5.1 | Safety requirements associated with working on marine electrical distribution systems are complied with |
5.2 | Causes and potential dangers associated with earth faults in multi earth neutral and floating neutral systems are identified | ||
5.3 | Earth faults are detected and repaired using correct equipment according to regulatory, organisational and manufacturer requirements | ||
5.4 | Hazards associated with working on fluorescent lamp circuits are identified | ||
5.5 | Fluorescent lamp circuit is constructed using appropriate manuals and drawings according to regulatory, organisational and manufacturer requirements | ||
5.6 | Components, function and operation of watertight and flame proof fittings are identified | ||
5.7 | Reasons for earthing high voltage systems via a resistor are outlined | ||
5.8 | Routine maintenance, inspection and testing of marine electrical distribution systems is performed according to regulatory, organisational and manufacturer requirements | ||
5.9 | Temporary repairs to insulation are performed according to regulatory, organisational and manufacturer requirements | ||
5.10 | Limitation of temporary repairs to insulation in terms of survey requirements are identified | ||
6 | Maintain DC electrical systems | 6.1 | Safety requirements associated with working on marine DC electrical systems are complied with |
6.2 | Operation of a rectifier is identified | ||
6.3 | Single-phase full wave rectifier fitted with filters is built and operated | ||
6.4 | Routine battery maintenance is carried out according to organisational and manufacturer requirements | ||
6.5 | Correct procedures for checking specific gravity of electrolyte in lead acid and alkaline batteries are applied according to manufacturer requirements | ||
6.6 | Methods for supplying back up power for remote/automatic control equipment are identified | ||
6.7 | Procedure for testing back up power is identified and applied | ||
7 | Identify faults in automated control systems | 7.1 | Pneumatic, hydraulic, electronic/electrical control systems are compared and contrasted |
7.2 | Function and operation of main components of automated control systems is outlined | ||
7.3 | Faults in automated control systems are detected and rectified using standard fault finding procedures | ||
7.4 | Testing procedures for identifying function and performance of automatic control systems in vessel operating systems are identified and applied | ||
8 | Operate electrical testing and measuring equipment | 8.1 | Insulation tester is operated safely according to manufacturer procedures |
8.2 | Continuity testing on electrical circuits is performed according to organisational and manufacturer procedures | ||
8.3 | Clamp meter is operated safely according to manufacturer procedures | ||
8.4 | Multimeter is operated safely according to manufacturer procedures | ||
9 | Test automatic control devices | 9.1 | Operational functions are performed on a monitor |
9.2 | Different types and operation of control valves are identified | ||
9.3 | Control system control functions are applied using different control devices |
Evidence of Performance
Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:
applying relevant procedures
assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices
communicating procedures associated with maintaining and repairing marine electrical and electronic equipment verbally and in writing
extracting information from basic electrical and electronic diagrams required to build electrical and electronic circuits
identifying and interpreting numerical and graphical information in vessel electrical diagrams and specifications
identifying and suggesting ways of rectifying faults and malfunctions in marine electrical and electronic systems on vessels
identifying methods, procedures and materials needed for operating, maintaining and repairing marine electrical and electronic systems on vessels
initiating timely action in response to defects or damage
reading and interpreting written information related to operating and maintaining marine electrical and electronic systems, including specifications, drawings, technical manuals, and electrical and electronic circuit diagrams
using testing equipment to gather information on function and performance of marine electrical and electronic systems.
Evidence of Knowledge
Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:
alternating current (AC)/DC voltage
batteries
circuit breakers and interlocks fitted to circuit breakers
circuits
current protection relays:
operate on fault and request
operate on fault and request and demand
operate on fault and request and under voltage
earthing
electrical measuring and testing instruments
electrical symbols, basic electrical and electronic diagrams and circuits
fault protection equipment:
differential protection device
fuses
over voltage devices
over current devices
reverse power devices
thermal overload devices
thermistor protection devices
under voltage devices
function and performance testing of system monitoring devices including:
alarm printer
data logger
nature and causes of typical start up and shut down malfunctions of main and auxiliary electrical and associated systems and available methods for their detection and rectification
operation of:
boiler, purifier and generator shut down systems
main engine shut down protective devices
protective devices found on board vessels
operational characteristics and performance specifications for different types of electrical and electronic systems found on vessels
principles and procedures of electrical maintenance
purpose and content of safety data sheets (SDS)/material safety data sheets (MSDS)
relevant procedures such as those relating to:
adjusting, testing and maintaining fault protection devices on switchboards
carrying out start up and shut down of electrical machinery and associated systems to ensure compliance with company and survey requirements and regulations
changing alarm-setting values in monitoring systems
confirming the accuracy of measuring monitoring
detecting electrical malfunctions and preventing damage
electrical safety and isolation
fault finding
marine maintenance, including difference between breakdown repair, planned maintenance and condition monitoring; purpose of maintenance recording and reporting procedures
routine maintenance on marine electrical motors (cleaning inspection, deterioration of insulation, removal of dust and oil, renew of bearings)
safety and emergency
testing function and performance of protection devices as part of vessel statutory survey
risks and safety procedures associated with working in high voltage environments
safety, environmental and hazard control precautions and procedures relevant to start up and shut down of marine electrical machinery and associated systems
safety requirements associated with working on marine electrical systems, including:
dangers associated with the spaces in the vicinity of busbars
potential dangers associated with instrument voltage/current transformer circuits
protection normally provided on doors of switchboard cubicles
types of electrical and electronic equipment and components
vessel safety management systems
work health and safety (WHS)/occupational health and safety (OHS) legislation and policies
working safely with electricity:
appropriate method of removing an electric shock victim from a live electrical situation
common causes of electrical accidents
effects of electric shock on the human body
electrical safe working practices
need for ensuring safe isolation of an electrical supply
precautions that can minimise chance of electric shock.
Assessment Conditions
Assessors must satisfy National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) assessor requirements.
Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that reflect workplace conditions.
Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.
Resources for assessment must include access to:
tools, equipment, machinery, materials and personal protective equipment currently used in industry
applicable documentation such as legislation, regulations, codes of practice, workplace procedures and operational manuals
range of relevant exercises, case studies and/or simulations.
Foundation Skills
This section describes those language, literacy, numeracy and employment skills that are essential to performance. |
Foundation skills essential to performance are explicit in the performance criteria of this unit of competency. |
Range Statement
Specifies different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Range is restricted to essential operating conditions and any other variables essential to the work environment. | |
Testing of marine generators include one or more of the following: | functional test of automatic voltage regulator (AVR) insulation reading of alternator: excitation circuit stator |
Faults in circuit breakers include one or more of the following: | alignment of contactors condition of: closing and opening mechanisms insulation barriers wear and tear on linkages |
Faults in electrical motor starters include one or more of the following: | earthing open circuit |
Main components of automated control systems include one or more of the following: | actuator control valve controller positioner regulator relay sensor servomotor transducer |
Faults in automated control systems include one or more of the following: | failure of components intermittent functional faults |
Vessel operating systems include one or more of the following: | auxiliary machinery boilers main engine power generation and distribution |
Operation of control valves include one or more of the following: | electrical hydraulic manual pneumatic |
Sectors
Not applicable.
Competency Field
B – Equipment Checking and Maintenance