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 intermediate principles of marine engineering thermodynamics can be applied

diagrams, specifications and other information required for performing intermediate calculations related to marine engineering thermodynamics

technical reference library with current publications on intermediate marine thermodynamics

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 intermediate principles of marine engineering thermodynamics

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.

Required Skills:

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

Explain basic principles of marine engineering thermodynamics

Identify and apply relevant mathematical formulas and techniques to solve basic problems related to marine engineering thermodynamics

Identify and interpret numerical and graphical information, and perform basic mathematical calculations related to marine engineering thermodynamics, such as gas expansion and contraction, heat transfer, and thermal efficiency

Identify, collate and process information required to perform basic calculations related to marine engineering thermodynamics

Impart knowledge and ideas through verbal, written and visual means

Read and interpret written information needed to perform basic calculations related to marine engineering thermodynamics

Use calculators to perform mathematical calculations

Required Knowledge:

Air compressor:

components

faults and hazards

first law of thermodynamics

operating cycle of reciprocating air compressors

performance characteristics

property diagrams

types

uses

working principles of reciprocating compressors

Enthalpy

Expansion and compression of gases

Gas laws

Internal combustion engines:

second law of thermodynamics

heat engine cycles

operating principles of two stroke and four stroke internal combustion engines

performance characteristics

improvements

Principles of:

heat transfer

refrigeration

Refrigeration and air conditioning cycles

Steam plants

System International (SI) units

Thermal efficiency calculations

Thermodynamic principles

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.

Key terms may include:

Enthalpy of fusion

Evaporation

Sensible heat

Transfer of heat energy

Processes may include:

Adiabatic

Isothermal

Polytropic

Fluid properties include:

Density

Dryness faction

Enthalpy of water

Pressure

Saturated steam

Specific volume

Superheated steam

Temperature

Forms of heat transfer may include:

Conduction

Convection

Radiation