Demonstrate intermediate knowledge of marine electrical systems

Formats and tools

Unit Description
Reconstruct the unit from the xml and display it as an HTML page.
Assessment Tool
an assessor resource that builds a framework for writing an assessment tool
Assessment Template
generate a spreadsheet for marking this unit in a classroom environment. Put student names in the top row and check them off as they demonstrate competenece for each of the unit's elements and performance criteria.
Assessment Matrix
a slightly different format than the assessment template. A spreadsheet with unit names, elements and performance criteria in separate columns. Put assessment names in column headings to track which performance criteria each one covers. Good for ensuring that you've covered every one of the performance criteria with your assessment instrument (all assessement tools together).
Wiki Markup
mark up the unit in a wiki markup codes, ready to copy and paste into a wiki page. The output will work in most wikis but is designed to work particularly well as a Wikiversity learning project.
Evidence Guide
create an evidence guide for workplace assessment and RPL applicants
Competency Mapping Template
Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners. A template for developing assessments for a unit, which will help you to create valid, fair and reliable assessments for the unit, ready to give to trainers and students
Observation Checklist
create an observation checklist for workplace assessment and RPL applicants. This is similar to the evidence guide above, but a little shorter and friendlier on your printer. You will also need to create a seperate Assessor Marking Guide for guidelines on gathering evidence and a list of key points for each activity observed using the unit's range statement, required skills and evidence required (see the unit's html page for details)

Self Assessment Survey
A form for students to assess thier current skill levels against each of the unit's performance criteria. Cut and paste into a web document or print and distribute in hard copy.
Moodle Outcomes
Create a csv file of the unit's performance criteria to import into a moodle course as outcomes, ready to associate with each of your assignments. Here's a quick 'how to' for importing these into moodle 2.x
Registered Training Organisations
Trying to find someone to train or assess you? This link lists all the RTOs that are currently registered to deliver MARL028, 'Demonstrate intermediate knowledge of marine electrical systems'.
Google Links
links to google searches, with filtering in place to maximise the usefulness of the returned results
Reference books for 'Demonstrate intermediate knowledge of marine electrical systems' on This online store has a huge range of books, pretty reasonable prices, free delivery in Australia *and* they give a small commission to for every purchase, so go nuts :)

Elements and Performance Criteria

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.


Analyse common faults in shipboard electrical machinery


Effects and ways of detecting earth on 3 wire insulated and 4 wire earthed neutral systems are explained


Effects of short circuits and operation of discrimination protection are explained


Symptoms and effects of ‘light’ and ‘heavy’ short circuits on components and circuits are compared


Effects of open circuits on systems and components transformers are analysed


Causes and effects of ‘hot spots’ in circuits are identified


Cause and effects of static electricity on shafting and when cleaning tanks are identified


Perform fault- finding on electrical circuits


Safe procedure for determining insulation resistance of a 3phase motor or alternator including protection of solidstate components and selection of suitable minimum insulation for the component is applied


Procedure for safely drying out an electrical machine with a low IR is outlined


Open circuit in a 3phase motor is safely tested


Procedure for testing internal short circuit in a 3phase motor is clarified


Analyse complex shipboard switchboard layouts


Switchboard layouts are interpreted


The effects and indications of earths on the system including intermittent and multi earths are explained


Safe procedure for locating earths on main and low voltage circuits including 24 V system is outlined


Operation of preferential tripping arrangements for overload protection is explained


Relationship between main and emergency switchboards is explained


Different methods of start up after black outs are outlined


Explain electrical safety procedures for ship and shore personnel


Potential problems associated with shore maintenance personnel working on ship electrical equipment are identified


Safe procedure of isolating electrical machinery for repair or maintenance is applied


Safe method of working on live electrical circuitry for purpose of repair or maintenance is explained


Problems associated with shipboard electrical fires are explained


Safe procedures for fighting shipboard electrical fires including fires in switchboards are clarified


Synchronise, parallel and load share alternators on manual and auto modes


Process of manually synchronising alternator and sharing kW and kVAR loading under all loading conditions is explained


Process of starting, testing and where applicable, of transferring emergency generator power on to main board, is explained


Operation of synchronising lights, synchroscope and all meters associated with synchronising is outlined


Operation of AVR and prime mover governor with respect to synchronising is outlined and how these can be adjusted at set points is explained


Examine operation, construction and maintenance of circuit breakers


Features and applications of different types of circuit breakers are differentiated


Closing and opening systems of circuit breakers are explained


Arc extinguishing systems are explained


Method for accessing an air circuit breaker for inspection is analysed


Function and operation of protection devices associated with air circuit breaker and molded case circuit breaker are examined


Analyse function of emergency battery systems


Different types and characteristics of batteries used for emergency supplies are identified


Methods of battery charging and ways in which charge condition of the battery can be determined are explained


Requirements of emergency supply and how transfer can occur without adversely affecting solid state components are explained


Safety hazards associated with batteries, and procedures to be adopted to minimise explosion and short circuits are appraised


Explain hazards associated with marine high voltage installations


Functional and operational requirements for a marine high voltage system are outlined


High voltage marine installations are identified


Design features of high voltage installations are explained


Risks and safety procedures associated with working in high voltage environments are identified


Procedure for assisting suitably qualified personnel to carry out maintenance and repair of high voltage installation is outlined