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Evidence Guide: MARC049 - Operate 240 to 440 voltage alternating current electrical systems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MARC049 - Operate 240 to 440 voltage alternating current electrical systems

What evidence can you provide to prove your understanding of each of the following citeria?

Routine pre-operational checks of electrical systems are completed prior to use according to manufacturer specifications and organisational procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Operate electrical systems

  1. Suitable personal protective equipment (PPE) is selected and used according to organisational procedures
Suitable personal protective equipment (PPE) is selected and used according to organisational procedures

Completed
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Electrical systems are operated in a safe and controlled manner

Completed
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Performance of DC and AC electrical systems is monitored

Completed
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AC electrical demand is monitored and additional generators are paralleled or disconnected, as required

Completed
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Ship-to-shore electrical supply is connected and disconnected, when required, following established practices and organisational procedures

Completed
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Faults or malfunctions are identified and reported according to organisational procedures

Completed
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Faults or malfunctions are rectified and corrective actions are taken and recorded according to organisational procedures

Completed
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Procedures to be undertaken in emergencies are recognised and implemented

Completed
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Complete operations and check electrical systems

  1. Shutdown procedures are conducted according to manufacturer instructions and organisational procedures
Shutdown procedures are conducted according to manufacturer instructions and organisational procedures

Completed
Date:

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Operational records are completed according to organisational procedures

Completed
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Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:

carrying out necessary calculations associated with managing electrical systems, including:

adding resistors in series and parallel, and calculating current

battery ampere-hours and efficiency

series and parallel configuration of battery supply

connecting to shore power

isolating and locking out of electrical circuits

maintaining records of operation of electrical systems, and any related safety incidents

monitoring and evaluating performance of electrical systems

performing switchboard operations, including the monitoring of electrical supply and procedures for paralleling generators

starting emergency alternator and supply switchboard where available

using hydrometer

using multimeter to test for voltage and continuity.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

batteries, including:

charging circuits and hazards associated with charging batteries

operation

types, care and hazards

characteristics of electrical systems

dangers associated with operation of shipboard electrical systems and related hazard prevention strategies

earth detection devices

electrical distribution systems, including emergency arrangements

electrical systems must include:

alternators

batteries and associated circuits

control circuits

motors

starter circuits

switchboards

faults associated with electrical systems and appropriate preventative and remedial action, and solutions

manufacturer instructions for the operation of electrical systems

methods for managing operation of shipboard electrical systems

motor and alternator construction

motor starter circuits

own ability and limits to rectify irregularities and faults

principles of operation of various shipboard emergency systems, including fire detection system, internal communications system and emergency generator

procedures for monitoring and evaluating performance of electrical systems

relevant performance of electrical systems when unsatisfactory or outside of specified limits and appropriate actions to be taken

relevant problems that may occur with electrical systems and appropriate preventative and remedial actions to be taken

relevant sections of state and territory maritime regulations, National Standard for Commercial Vessels (NSCV) and Uniform Shipping Laws (USL) Code

relevant work health and safety (WHS)/occupational health and safety (OHS) legislation and policies

safety devices fitted to switchboard and other electrical systems, including fuses and circuit breakers

sequence of required action when power unit becomes overloaded

shore power arrangements

single and three phase alternating current (AC) power generation.

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.