Demonstrate basic knowledge of marine steam turbines and main boilers

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 MARL013, 'Demonstrate basic knowledge of marine steam turbines and main boilers'.
Google Links
links to google searches, with filtering in place to maximise the usefulness of the returned results
Reference books for 'Demonstrate basic knowledge of marine steam turbines and main boilers' 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.


Interpret an energy balance diagram for a shipboard steam plant


Ideal theoretical thermodynamic cycle for the operation of a steam plant is outlined


Why actual expansion of steam through a turbine differs from ideal cycle is explained


Typical heat losses around a steam plant are identified


Effect of air preheating, feed heating and economisation upon energy balance of steam plant’s thermodynamic cycle are explained


Typical heat (and/or mass) balance diagram for a ship’s steam plant is interpreted


Explain construction and operation of marine high-pressure water boilers


Advantages of water tube boiler over fire tube boiler for shipboard applications are outlined


Construction and operation of a ‘D’ type membrane furnace boiler with superheater, economiser and air pre-heater is explained


External fittings required by Classification Society Rules on any large boiler are identified


Internal fittings of a boiler’s main steam drum are identified


How automation is applied to boiler control is clarified


Start up, operation and shut down of a main propulsion steam boiler is outlined


Explain construction and operation of a main propulsion steam plant


How common forms of blading and rotor construction are manufactured is clarified


How casings of common marine steam turbines are fitted out is clarified


Principles of thermodynamics are applied to explain expansion of steam in a typical marine turbine


Importance of start up and warming-through procedures for a steam turbine set is conveyed


Checks required during routine turbine operation are explained


Safety devices for a steam turbine set are identified and normal emergency shut-down procedures are identified


Operation of turbines under normal and emergency conditions is outlined


Explain auxiliary machinery required to support operation of main propulsion steam turbines and boilers


Construction and operation of different types of auxiliary machinery needed to support main propulsion steam turbines and boilers is outlined


Construction and operation of steam and electric motor prime movers required for driving auxiliary machinery are outlined


Explain configuration and operating principles of different steam distribution systems used in steam-powered vessels


Configuration and operating principles of different steam distribution systems is outlined


Typical pressure reducing and pressure control valves suitable for steam service are outlined and illustrated


Explain operation principles of close feed systems used by boiler/turbine sets


Difference between an open and a closed feed system is clarified


Closed feed system is outlined


Pressure feed heaters are outlined


Chemical injection equipment suitable for use on any ship’s main feed system is explained


Explain feed and boiler water treatment


Recommended limits of characteristics for boiler water and recommended intervals at which tests are undertaken are clarified


Reasons for treating boiler water are outlined


Different types of hardness in water, their consequences if left untreated, and ways of minimising their effect are explained


How corrosion within a boiler is minimised by treating boiler water is explained


Causes and ways of avoiding carry-over and caustic embrittlement are explained


Safety requirements for handling feedwater and boiler water treatment chemicals are explained


Explain transmission of power from the steam turbine main engine to the propeller


Why reduction gearing is required between steam turbines and propeller is clarified


Generation of tooth form is outlined


Double helical gearing and difference between single and double reduction gearing are explained


Applications of epicyclic gearing are explained


Function of flexible couplings in a turbine/gearing set is clarified


Components of a driveline from main wheel connection, aft, to propeller are listed


Methods and mechanisms for lubricating a driveline are detailed


Explain procedures for preventing and responding to fires and explosions specific to steam propulsion plant


Causes, symptoms and means of preventing and extinguishing fires associated with steam propulsion plant are detailed


Protective devices associated with boilers to minimise risk of fires, explosions and water shortages are identified


Routine inspection and maintenance requirements to prevent fires, explosions and water shortages are outlined