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Evidence Guide: MARC4007A - 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

 

MARC4007A - Operate 240 to 440 voltage alternating current electrical systems

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

Prepare for operation

  1. Risks to self, others and the environment are identified according to organisational procedures
  2. Routine pre-operational checks of electrical systems are completed prior to use according to manufacturer specifications and organisational procedures
Risks to self, others and the environment are identified according to organisational procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

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 is selected and used according to organisational procedures
  2. Electrical systems are operated in a safe and controlled manner
  3. Performance of direct current (DC) and AC electrical systems is monitored
  4. AC electrical demand is monitored and additional generators are paralleled or disconnected as required
  5. Ship to shore electrical supply is connected and disconnected when required following established practices and organisational procedures
  6. Faults or malfunctions are identified and reported according to organisational procedures
  7. Faults or malfunctions are rectified and corrective actions are taken and recorded according to organisational procedures
  8. Procedures to be undertaken in emergencies are recognised and implemented
Suitable personal protective equipment is selected and used according to organisational procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Electrical systems are operated in a safe and controlled manner

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Performance of direct current (DC) and AC electrical systems is monitored

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Faults or malfunctions are identified and reported according to organisational procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

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

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Procedures to be undertaken in emergencies are recognised and implemented

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Complete operations and check electrical systems

  1. Shut-down procedures are conducted according to manufacturer instructions and organisational procedures
  2. Operational records are completed according to organisational procedures
Shut-down procedures are conducted according to manufacturer instructions and organisational procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Operational records are completed according to organisational procedures

Completed
Date:

Teacher:
Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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:

attention to appropriate level of detail in recordkeeping

being aware of own ability and limits to rectify irregularities and faults.

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 operating 240 to 440 voltage AC electrical systems can be conducted

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 operating 240 to 440 voltage AC 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 and Knowledge

Required Skills:

Carry out necessary calculations associated with managing electrical systems including:

battery ampere-hours and efficiency

series and parallel configuration of battery supply

adding resistors in series and parallel, and calculating current

Connect to shore power

Isolate electrical circuits

Maintain records of operating and maintaining electrical systems, and any related safety incidents

Monitor and evaluate performance of electrical systems

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

Read and interpret:

manufacturer instructions for the operation of electrical systems

maritime regulations, rules and instructions

Recognise problems that may occur with electrical systems and take appropriate preventative and remedial action

Recognise when performance of electrical systems is unsatisfactory or outside of specified limits and take appropriate action

Start emergency generator and supply switchboard where available

Use hydrometer

Use multi-meter to test for voltage and continuity

Required Knowledge:

Battery:

operation

charging circuits and hazards associated with charging batteries

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

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

Methods for managing operation of shipboard electrical systems

Motor and alternator construction

Motor starter circuits

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 sections of state and territory maritime regulations, NSCV and 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 AC power generation

Range Statement

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.

Electrical systems must include:

Alternators

Batteries and associated circuits

Control circuits

Fire detection

Motors

Starter circuits

Switchboard

Emergencies must include:

Failure of:

generator

emergency generator

Fire

Flooding

Operational records must include:

Log books

Maintenance records

Operational orders from the organisation’s safety management system

Plant and equipment manufacturer instructions and recommended procedures

Relevant maritime authorities documentation relating to operating electrical systems