Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARL058 Mapping and Delivery Guide
Demonstrate basic knowledge of marine electrical systems

Version 1.0
Issue Date: May 2024


Qualification -
Unit of Competency MARL058 - Demonstrate basic knowledge of marine electrical systems
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to operate alternators, generators and control systems to supply shipboard electrical power onboard a commercial vessel.This unit applies to people working in the maritime industry in the capacity of:Electro-Technical Officer (STCW Electro-Technical Officer Unlimited)Engineer Class 3 Near CoastalEngineer Watchkeeper (STCW Engineer Watchkeeper Unlimited). Licensing/Regulatory InformationLegislative and regulatory requirements are applicable to this unit. Regulatory requirements include STCW International Maritime Organization (IMO) model course competencies and areas of knowledge, understanding and proficiency, together with the estimated total hours required for lectures and practical exercises. Teaching staff should note that timings are suggestions only and should be adapted to suit individual groups of trainees depending on their experience, ability, equipment and staff available for training.Near Coastal Qualifications:This unit is one of the requirements to obtain Australian Maritime Safety Authority (AMSA) certification as an Engineer Class 3 Near Coastal as defined in the Marine Order 505 (Certificates of competency - National Law) 2013.Blue Waters Qualifications:This unit is one of the requirements to obtain Australian Maritime Safety Authority (AMSA) certification as an Electro-Technical Officer (STCW Electro-Technical Officer Unlimited) or Engineer Watchkeeper (STCW Engineer Watchkeeper Unlimited) and to meet regulatory requirements this unit must be delivered consistent with Marine Orders and with the relevant sections of the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW).
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

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.

Practical assessment must occur in a workplace, or realistic simulated workplace, under the normal range of workplace conditions.

Simulations and scenarios may be used where situations cannot be provided in the workplace or may occur only rarely, in particular for situations relating to emergency procedures and adverse weather conditions where assessment would be unsafe, impractical or may lead to environmental damage.

Resources for assessment must include access to:

applicable documentation, such as legislation, regulations, codes of practice, workplace procedures and operational manuals

tools, equipment, machinery, materials and relevant personal protective equipment (PPE) currently used in industry.
Prerequisites/co-requisites
Competency Field L - Engineering
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities 		Slides
PPT 		Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Explain hazards and isolation procedures associated with live electrical components
  • Effects of electricity on the human body are outlined
       
Element: Procedures to be taken in the event of a person suffering an electric shock are clarified
       
Element: Correct procedure for isolating an electrical circuit is clarified
       
Element: Electrical hazards in a vessel at sea or port are identified
       
Element: Explain principles of power generation and transmission in alternating current (AC) and direct current (DC) circuits
  • Excitation methods used to produce AC and DC voltages are outlined
       
Element: Basic voltage control of generated AC voltages is outlined
       
Element: Outline key features of basic electrical diagrams used on vessels
  • Types of diagrams used to depict electrical systems on ships are outlined
       
Element: Electrical symbols used in basic electrical diagrams are identified
       
Element: Electrical devices used in basic electrical circuits are clarified
       
Element: Use common electrical measuring and testing instruments
  • Different types of multimeters are used appropriately
       
Element: Functions of insulation and ‘tong’ testers are explained
       
Element: Safety requirements when using test equipment are applied
       
Element: Rectify basic electrical faults
  • Fault situation is determined by appropriate questioning of client or operator
       
Element: Safe working practices are demonstrated when carrying out fault-finding work
       
Element: Basic common faults of equipment and techniques used to find faults are outlined
       
Element: Knowledge of various types of basic common faults of circuits and techniques is used to find faults
       
Element: Basic common faults in electrical equipment are identified and rectified
       
Element: Outline basic components and layout of a marine electrical switchboard
  • Layout of a typical three-wire insulated electrical system is sketched
       
Element: Interconnections between main switchboard, emergency switchboard and shore supply are explained
       
Element: Procedure for changing over to emergency switchboard for testing or during loss of mains power is outlined
       
Element: Safety features on a typical marine switchboard are identified
       
Element: Explain operation of shipboard alternators
  • Types and construction methods of alternators used on a marine vessel are outlined
       
Element: Principles of operation of a marine type alternator are outlined
       
Element: Relationship is shown between voltage and speed in regulation of alternator
       
Element: Operational characteristics of a marine alternator are outlined
       
Element: Excitation and automatic voltage regulation systems used with marine alternators are clarified
       
Element: Explain procedures for paralleling of alternators
  • Process of measuring voltage, frequency and phase angle is outlined
       
Element: Automatic and manual procedures for synchronising and paralleling marine alternators, including machines of different capacities, are clarified
       
Element: How two machines can be adjusted to share kilovolt-ampere reactive (kVAR) and kilowatt (kW) loads is confirmed
       
Element: Process of removing an alternator from the bus is outlined
       


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

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:

assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices

explaining basic principles of alternators, generators and control systems

identifying and interpreting numerical and graphical information in electrical diagrams and specifications for a commercial vessel

identifying and suggesting ways of rectifying electrical hazards and emergency situations on a vessel

identifying methods, procedures and materials needed for operating, maintaining and repairing basic marine electrical systems

imparting knowledge and ideas through verbal, written and visual means

providing accurate and reliable information

providing appropriate level of detail in responses

reading and interpreting written information related to electrical circuitry and components on commercial vessels

using electrical measuring and testing instruments.

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)/direct current (DC) voltage

alternators:

characteristics

construction

synchronised operation

automatic control devices, including:

process control

system control

electrical:

measuring and testing instruments

safe working practices

symbols, basic electrical diagrams/circuits

electrical hazards, including:

electric shock

electrical fire

moving and rotating electrical equipment

non-compliance with safe working procedures

over-speed of electrical machinery

poor housekeeping procedures

using equipment beyond safe working limits

electrical motors

high voltage (HV)

marine electrical systems, including:

earthing

instrumentation

power distribution boards

switchboards

monitoring systems

phase angle, power factor and current flow

procedures for dealing with hazards and emergencies

protective devices

resistance, inductance and capacitance

switchboards and protection, including:

equipment removal

purpose

testing and maintenance

work health and safety (WHS)/occupational health and safety (OHS) legislation and policies.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
Effects of electricity on the human body are outlined 
 
 
 
Excitation methods used to produce AC and DC voltages are outlined 
 
Types of diagrams used to depict electrical systems on ships are outlined 
 
 
Different types of multimeters are used appropriately 
 
 
Fault situation is determined by appropriate questioning of client or operator 
 
 
 
 
Layout of a typical three-wire insulated electrical system is sketched 
 
 
 
Types and construction methods of alternators used on a marine vessel are outlined 
 
 
 
 
Process of measuring voltage, frequency and phase angle is outlined 
 
 
 

Forms

Assessment Cover Sheet

MARL058 - Demonstrate basic knowledge of marine electrical systems
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

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Date:

Assessment Record Sheet

MARL058 - Demonstrate basic knowledge of marine electrical systems

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: