Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARC4007A Mapping and Delivery Guide
Operate 240 to 440 voltage alternating current electrical systems

Version 1.0
Issue Date: March 2024


Qualification -
Unit of Competency MARC4007A - Operate 240 to 440 voltage alternating current electrical systems
Description This unit involves the skills and knowledge required to operate a 240 to 440 voltage alternating current (AC) electrical system according to technical specifications and safe operating limits.
Employability Skills This unit contains employability skills.
Learning Outcomes and Application This unit applies to engine workers in the maritime industry working as a Marine Engine Driver Grade 1 on vessels up to 1500 kW.WARNING: Relevant state/territory training and qualification requirements need to be fulfilled by any persons carrying out installation, maintenance and/or repair of refrigeration equipment especially with regard to preventing the escape of refrigerants into the atmosphere and to electrical work.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.
Prerequisites/co-requisites Not applicable.
Competency Field
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities
Slides
PPT
Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Prepare for operation
  • Risks to self, others and the environment are identified according to organisational procedures
  • Routine pre-operational checks of electrical systems are completed prior to use according to manufacturer specifications and organisational procedures
       
Element: Operate electrical systems
  • Suitable personal protective equipment is selected and used according to organisational procedures
  • Electrical systems are operated in a safe and controlled manner
  • Performance of direct current (DC) and AC electrical systems is monitored
  • AC electrical demand is monitored and additional generators are paralleled or disconnected as required
  • Ship to shore electrical supply is connected and disconnected when required following established practices and organisational procedures
  • Faults or malfunctions are identified and reported according to organisational procedures
  • Faults or malfunctions are rectified and corrective actions are taken and recorded according to organisational procedures
  • Procedures to be undertaken in emergencies are recognised and implemented
       
Element: Complete operations and check electrical systems
  • Shut-down procedures are conducted according to manufacturer instructions and organisational procedures
  • Operational records are completed according to organisational procedures
       


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:

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.


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, 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:

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

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

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
Risks to self, others and the environment are identified according to organisational procedures 
Routine pre-operational checks of electrical systems are completed prior to use according to manufacturer specifications and organisational procedures 
Suitable personal protective equipment is selected and used according to organisational procedures 
Electrical systems are operated in a safe and controlled manner 
Performance of direct current (DC) and AC electrical systems is monitored 
AC electrical demand is monitored and additional generators are paralleled or disconnected as required 
Ship to shore electrical supply is connected and disconnected when required following established practices and organisational procedures 
Faults or malfunctions are identified and reported according to organisational procedures 
Faults or malfunctions are rectified and corrective actions are taken and recorded according to organisational procedures 
Procedures to be undertaken in emergencies are recognised and implemented 
Shut-down procedures are conducted according to manufacturer instructions and organisational procedures 
Operational records are completed according to organisational procedures 

Forms

Assessment Cover Sheet

MARC4007A - Operate 240 to 440 voltage alternating current electrical systems
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

MARC4007A - Operate 240 to 440 voltage alternating current electrical systems

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

Assessor name:

Signature:

Date:

Student signature:

Date: