NZQA registered unit standard
8323 version 3
Page 1 of 3
Title
Demonstrate knowledge of electric arc furnace steelmaking
Level
3
Credits
Purpose
4
This unit standard is for people working in the steel
manufacturing sector.
People credited with this unit standard are able to demonstrate
knowledge of: electric arc furnaces; electric arc furnace
processes; and the measurement of performance of electric arc
furnaces.
Classification
Steel Manufacturing > Steel Manufacturing - Supporting Skills
Available grade
Achieved
Explanatory notes
Definition
Company documentation refers to the documented procedures, manufacturer’s manuals,
and selected reference texts for the equipment and process.
Outcomes and evidence requirements
Outcome 1
Demonstrate knowledge of electric arc furnaces.
Evidence requirements
1.1
The characteristics of electric arc furnaces are described in terms of their
function, operation, and application.
Range
1.2
Service support systems are explained in terms of the function and interrelationship with each other.
Range
1.3
evidence of five different types is required.
service support systems include but are not limited to – electrical,
control, data capture, water, fume extraction.
The characteristics of electric arc furnace ancillary equipment is described in
terms of its function, operation, and application.
Range
Competenz
SSB Code 101571
ancillary equipment includes but is not limited to – lances,
injectors, probes.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
8323 version 3
Page 2 of 3
1.4
The types, identifying characteristics, and function of the refractories utilised in
electric arc furnaces are described in terms of company documentation.
1.5
The types and function of electric arc furnace consumables are described in
terms of their function and application.
Range
consumables include but are not limited to – electrodes, gases,
samplers.
Outcome 2
Demonstrate knowledge of electric arc furnace processes.
Evidence requirements
2.1
The characteristics of steelmaking and refining are outlined in terms of the
physical and chemical processes.
Range
2.2
Steelmaking additives are identified and described in terms of their application
and use.
Range
2.3
physical and chemical processes include but are not limited to –
melting, decarburisation, desulphurisation, dephosphorisation.
additives include but are not limited to – recarburisers, alloys,
fluxes, deoxidants.
The types, characteristics, and function of electric arc furnace slags are
described in terms of company documentation.
Outcome 3
Demonstrate knowledge of the measurement of performance of electric arc furnaces.
Evidence requirements
3.1
The application and implications of performance indicators are identified and
described in terms of company documentation.
Range
3.2
performance indicators may include, but are not limited to –
kWh/tonne, electrodes/tonne, tap to tap time;
evidence of three is required.
The identity, application, and effect of quality control factors for electric arc
furnaces are described in terms of company documentation.
Range
Competenz
SSB Code 101571
quality control factors include but are not limited to – chemistry,
temperature, active oxygen.
 New Zealand Qualifications Authority 2016
NZQA registered unit standard
Planned review date
8323 version 3
Page 3 of 3
31 December 2012
Status information and last date for assessment for superseded versions
Process
Version Date
Last Date for Assessment
Registration
1
17 December 1996
31 December 2012
Revision
2
18 July 2000
31 December 2012
Rollover and
Revision
3
15 March 2012
N/A
Consent and Moderation Requirements (CMR) reference
0013
This CMR can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Please note
Providers must be granted consent to assess against standards (accredited) by NZQA,
before they can report credits from assessment against unit standards or deliver courses
of study leading to that assessment.
Industry Training Organisations must be granted consent to assess against standards by
NZQA before they can register credits from assessment against unit standards.
Providers and Industry Training Organisations, which have been granted consent and
which are assessing against unit standards must engage with the moderation system that
applies to those standards.
Requirements for consent to assess and an outline of the moderation system that applies
to this standard are outlined in the Consent and Moderation Requirements (CMR). The
CMR also includes useful information about special requirements for organisations wishing
to develop education and training programmes, such as minimum qualifications for tutors
and assessors, and special resource requirements.
Comments on this unit standard
Please contact Competenz qualifications@competenz.org.nz if you wish to suggest
changes to the content of this unit standard.
Competenz
SSB Code 101571
 New Zealand Qualifications Authority 2016