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

MARL6007A Mapping and Delivery Guide
Apply advanced principles of marine mechanics

Version 1.0
Issue Date: April 2024


Qualification -
Unit of Competency MARL6007A - Apply advanced principles of marine mechanics
Description This unit involves the skills and knowledge required to apply advanced principles of marine mechanics and to perform associated calculations needed to operate and maintain marine machinery.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit applies to the work of a Marine Engineer Class 1 on commercial vessels of unlimited propulsion power and forms part of the requirements for the Certificate of Competency Marine Engineer Class 1 issued by the Australian Maritime Safety Authority (AMSA).
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites Not applicable.
Competency Field
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: Apply principle of statics to determine forces in structures, connections, support systems, and trusses in two and three dimensions
  • Bow’s notation is applied to solve problems related to trusses
  • Individual loads are computed using method of sections
  • Forces in three-dimensional structures are calculated
       
Element: Calculate friction torque in plate and cone clutches
  • Laws of friction are applied to develop formulae, using uniform wear, to find the torque in a plate and cone clutch
  • Laws of friction are applied to develop formulae, using uniform pressure, to find the torque in plate and cone clutches
  • Power to overcome friction in plate and cone clutches using uniform wear and uniform pressure formulae is computed
       
Element: Calculate displacement, velocity and acceleration in cams, engine mechanisms and gear systems
  • Velocity and acceleration diagrams are applied to illustrate relative velocity and acceleration
  • Output of epicyclic gears is calculated by applying relative velocity and acceleration theory
  • Inertia loads are calculated using piston velocity and acceleration equations
       
Element: Analyse forces and couples to balance reciprocating machinery
  • How primary force balance is obtained is graphically illustrated
  • Relationship between complete balance and dynamic balance is explained
  • Reciprocating piston acceleration formula is applied to differentiate between primary and secondary forces
  • Complete balance for a multicylinder reciprocating engine or machine is illustrated graphically using vector diagrams and computed analytically
       
Element: Apply simple harmonic motion principles
       
Element: to solve problems in free and forced vibration
  • Differences in the terms amplitude, frequency and period are explained
  • Simple harmonic motion (SHM) equations are derived from the scotch yoke mechanism
  • Equations for displacement, velocity, acceleration and frequency in SHM are developed
  • Displacement, velocity, acceleration and frequency in SHM in a vibrating spring-mass system are determined
  • Spring constant (k) for springs in series and parallel is calculated
  • Forced vibration caused by an out-of-balance rotating mass is analysed to derive an expression for amplitude of forced vibration
  • Dangers of resonance are explained
  • Transmissibility factor to calculate frequency and spring rate are applied
       
Element: Calculate hoop stresses in rotating rings and stresses in compound bars
  • How rotational stress is generated by centrifugal force is explained
  • Formula for hoop stress in a rotating ring is applied to calculate hoop stress and/or limiting speed of rotation
  • Stresses in compound bars subject to axial loads and/or temperature change are determined
       
Element: Apply strain energy and resilience theory to determine stresses caused by impact or suddenly applied loads
  • Equation is derived to calculate strain energy in a deformed material
  • Stress in a material due to impact or dynamic loads is determined using energy equation
  • Equation to calculate stress caused by suddenly applied loads is derived
       
Element: Calculate beam deflection
  • Macaulay’s method is applied to calculate beam deflection
  • Deflection of cantilever and simply supported beams is calculated using standard deflection formulae for different loads
       
Element: Apply Euler's formula to find buckling load of a column
  • Effective length of a column with various end restraints is determined
  • Slenderness ratio is applied to determine the strength of columns
  • Relationship between slenderness ratio and buckling is explained
  • How buckling load for a slender column is applied (including a factor of safety) is explained
       
Element: Calculate stresses
  • How to combine stress formula and calculate stress with combined loading is explained
  • Superposition is used to describe stress due to combined axial and bending stress
  • Mohr’s Circle is employed to illustrate normal and shear stress
  • Principal stress formulae are applied to explain how maximum combined normal and shear stress can be obtained
  • Principal stress equation is applied to calculate maximum combined shear and normal stress
       
Element: Apply thick shell formulae
  • Tangential stress distribution caused by internal and external pressure is analysed
  • Lame’s theorem is applied to describe stress in thick cylinders due to internal and external pressure
       
Element: Apply continuity equation to determine changes in fluid velocity
  • Conservation of energy theory is applied to calculate pressure, head and velocity of fluids flowing through orifices
  • Volumetric and mass flow through a venturi meter is calculated
  • Forces exerted by flowing fluids either free (jet) or contained are determined, including coefficients of velocity, contraction of area and discharge
       
Element: Determine changes in fluid flows through pipe systems and centrifugal pumps
  • Difference between steady and unsteady flow is clarified
  • Viscosity of fluids is analysed and difference between dynamic and kinematic viscosity is explained
  • Significance of Reynolds number in fluid mechanics is explained
  • Importance of critical Reynolds number is explained
  • Flow losses in pipes and fittings are calculated
  • Changes of velocity of liquids in a centrifugal pump are analysed and entry and exit vane angles are determined
       


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.

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:

making accurate and reliable calculations

solving problems using appropriate laws and principles.

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 advanced principles of marine mechanics can be applied

diagrams, specifications and other information required for performing advance calculations related to marine mechanics

technical reference library with current publications on advanced marine mechanics

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 applying advanced principles of marine mechanics

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.

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.

Required Skills:

Assess own work outcomes and maintain knowledge of current codes, standards, regulations and industry practices

Explain advanced principles of marine mechanics

Identify and apply relevant mathematical formulas and techniques to solve advanced problems related to marine mechanics

Identify and interpret numerical and graphical information, and perform complex mathematical calculations such as determining hoop stresses in rotating rings and stresses in compound bars

Identify, collate and process information required to perform complex calculations related to marine mechanics

Impart knowledge and ideas through verbal, written and visual means

Read and interpret written information needed to perform complex calculations in marine mechanics

Use calculators to perform complex mathematical calculations

Required Knowledge:

Angular and linear motion

Centre of gravity

Conservation of energy theorem

Factor of safety

Force

Inertia force

Joint efficiency factor

Laws of motion

Momentum

Nature and laws of friction

Polygon of forces

Pressure vessels

Reactions

Simple harmonic motion

Stress and strain

Thin cylinder theory

Turning moment

Vector diagrams

Work health and safety (WHS)/occupational health and safety (OHS) requirements and work practices

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.

Dangers may include:

Catastrophic failure due to physical limitations of machines being exceeded as determined by their susceptibility and resistance to vibrations

Violent swaying motions

Different loads may include:

Concentrated

Distributed

Combined

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
Bow’s notation is applied to solve problems related to trusses 
Individual loads are computed using method of sections 
Forces in three-dimensional structures are calculated 
Laws of friction are applied to develop formulae, using uniform wear, to find the torque in a plate and cone clutch 
Laws of friction are applied to develop formulae, using uniform pressure, to find the torque in plate and cone clutches 
Power to overcome friction in plate and cone clutches using uniform wear and uniform pressure formulae is computed 
Velocity and acceleration diagrams are applied to illustrate relative velocity and acceleration 
Output of epicyclic gears is calculated by applying relative velocity and acceleration theory 
Inertia loads are calculated using piston velocity and acceleration equations 
How primary force balance is obtained is graphically illustrated 
Relationship between complete balance and dynamic balance is explained 
Reciprocating piston acceleration formula is applied to differentiate between primary and secondary forces 
Complete balance for a multicylinder reciprocating engine or machine is illustrated graphically using vector diagrams and computed analytically 
 
Differences in the terms amplitude, frequency and period are explained 
Simple harmonic motion (SHM) equations are derived from the scotch yoke mechanism 
Equations for displacement, velocity, acceleration and frequency in SHM are developed 
Displacement, velocity, acceleration and frequency in SHM in a vibrating spring-mass system are determined 
Spring constant (k) for springs in series and parallel is calculated 
Forced vibration caused by an out-of-balance rotating mass is analysed to derive an expression for amplitude of forced vibration 
Dangers of resonance are explained 
Transmissibility factor to calculate frequency and spring rate are applied 
How rotational stress is generated by centrifugal force is explained 
Formula for hoop stress in a rotating ring is applied to calculate hoop stress and/or limiting speed of rotation 
Stresses in compound bars subject to axial loads and/or temperature change are determined 
Equation is derived to calculate strain energy in a deformed material 
Stress in a material due to impact or dynamic loads is determined using energy equation 
Equation to calculate stress caused by suddenly applied loads is derived 
Macaulay’s method is applied to calculate beam deflection 
Deflection of cantilever and simply supported beams is calculated using standard deflection formulae for different loads 
Effective length of a column with various end restraints is determined 
Slenderness ratio is applied to determine the strength of columns 
Relationship between slenderness ratio and buckling is explained 
How buckling load for a slender column is applied (including a factor of safety) is explained 
How to combine stress formula and calculate stress with combined loading is explained 
Superposition is used to describe stress due to combined axial and bending stress 
Mohr’s Circle is employed to illustrate normal and shear stress 
Principal stress formulae are applied to explain how maximum combined normal and shear stress can be obtained 
Principal stress equation is applied to calculate maximum combined shear and normal stress 
Tangential stress distribution caused by internal and external pressure is analysed 
Lame’s theorem is applied to describe stress in thick cylinders due to internal and external pressure 
Conservation of energy theory is applied to calculate pressure, head and velocity of fluids flowing through orifices 
Volumetric and mass flow through a venturi meter is calculated 
Forces exerted by flowing fluids either free (jet) or contained are determined, including coefficients of velocity, contraction of area and discharge 
Difference between steady and unsteady flow is clarified 
Viscosity of fluids is analysed and difference between dynamic and kinematic viscosity is explained 
Significance of Reynolds number in fluid mechanics is explained 
Importance of critical Reynolds number is explained 
Flow losses in pipes and fittings are calculated 
Changes of velocity of liquids in a centrifugal pump are analysed and entry and exit vane angles are determined 

Forms

Assessment Cover Sheet

MARL6007A - Apply advanced principles of marine mechanics
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MARL6007A - Apply advanced principles of marine mechanics

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