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:

providing accurate and reliable information

providing appropriate level of detail in responses.

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 knowledge of marine electrical systems can be demonstrated

technical reference library with current publications on marine electrical systems

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 demonstrating advanced knowledge of marine electrical systems

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 advanced principles of lighting, cathodic protection, high voltage systems and impart knowledge and ideas verbally, in writing and visually

Identify and interpret complex numerical and graphical information in electrical diagrams and specifications for a commercial vessel

Identify and suggest ways of rectifying electrical hazards and emergency situations on a vessel

Identify methods, procedures and materials needed for operating, maintaining and repairing complex marine electrical systems

Read and interpret written information related to electrical circuitry and components on commercial vessels

Use electrical measuring and testing instruments

Required Knowledge:

Alternating current (AC)/direct current (DC) voltage

AC and DC marine motors

Alternators:

alternator excitation system design

construction

characteristics

synchronised operation

types

Cathodic protection system

Electrical:

layout systems

measuring and testing instruments

shipboard equipment

symbols, basic electrical diagrams/circuits

High voltage electrical motor propulsion systems

Lighting systems used on board ships

Motor starters for three-phase and synchronous motors

Phase angle, power factor, and current flow

Power management and UPS fitted to vessels

Procedures for dealing with hazards and emergencies

Requirements and components associated with electrical systems for hazardous spaces on board vessels

Resistance, inductance and capacitance

Safe electrical working practices

Work health and safety (WHS)/occupational health and safety (OHS) legislation and policies

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.

Operating parameters may include:

Excitation current

Insulation grade

Operating temperature

Speed

Marine motors may include:

Polyphase

Reduced starting current motors

Single

Speed changing

Synchronous

Variable speed

Encapsulation may include:

Drip proof

Submersible

TEFC

Motor ratings may include:

Continuous

Short time

Operational problems may include:

Loss of insulation resistance

Open circuit

Overheating

Short circuit

Wrong connections

Different types and applications of special motors for deck and cargo operation may include:

Common faults

Remedies for common faults

Motor starters may include:

DOL

Primary and secondary resistance

Soft or electronic starters

Star-Delta

Transformer starter

Lighting systems may include:

Fluorescent

Halogen

Incandescent

LED

Mercury

Sodium vapour

Distribution layout systems must include:

Emergency lights

Safety lights

How excitation systems impact on output in normal and adverse circumstances must include:

Loss of excitation

Short circuit

Safety requirements may include:

Company requirements

Manufacturer requirements.

Statutory requirements