MARL6007A - Apply advanced principles of marine mechanics
Assessor Resource
MARL6007A Apply advanced principles of marine mechanics
Assessment tool
Version 1.0 Issue Date: April 2024
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).
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.
You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)
Prerequisites
Not applicable.
Employability Skills
This unit contains employability skills.
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.
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, assingnment, 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
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:
Signature:
Date:
Assessment Record Sheet
MARL6007A - Apply advanced principles of marine mechanics
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