25709 version 1
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Demonstrate and apply knowledge of advanced heavy fabrication trade
practice
Level
4
Credits
12
Purpose
This unit standard is for use in training of fabrication trades and covers
knowledge and application of heavy fabrication trade practice at trade level.
People credited with this unit standard are able to: demonstrate knowledge of
advanced heavy fabrication trade practice; demonstrate knowledge of
aluminium in the context of heavy fabrication trade practice; prepare for
fabrication; fabricate objects for the heavy fabrication industry; and care for
and maintain fabrication workplace, machines, and equipment.
Subfield
Mechanical Engineering
Domain
Engineering - Fabrication
Status
Registered
Status date
17 July 2009
Date version published
17 July 2009
Planned review date
31 December 2014
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA.
Standard setting body (SSB)
Competenz
Accreditation and Moderation Action Plan (AMAP) reference
0013
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
References
Health and Safety in Employment Act 1992.
Accident Compensation Corporation and Department of Labour. Metal Industry
Guidelines for Safe Work. Wellington: ACC, 2007. Available from
http://www.acc.co.nz.
 New Zealand Qualifications Authority 2016
25709 version 1
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2
Definitions
Advanced heavy fabrication trade practice – trade knowledge and practical skills
expected by industry of a qualified heavy fabricator. This includes the ability to
produce complex objects as defined by the range in element 4.
Industry practice – safe and sound practices generally accepted by competent trade
persons within the fabrication industry.
Job specifications – instructions relevant to the safe completion of the specific task,
such as technical specifications, assembly instructions, drawings, parts lists, standards,
codes of practice, test and commissioning procedures, and verbal instructions.
Safety guidelines – guidelines for the safe operation of machinery and tools, such as
those listed in the references, as well as guidelines for specific machines in workshops.
Worksite procedures – operational procedures put in place by the candidate’s
employer. These include site safety procedures, equipment operating procedures,
job procedures, quality assurance, and procedures for the handling and disposal of
materials and waste.
3
Patterns
For fabrication purposes it would be useful if patterns developed in Unit 25705, Develop
fabrication patterns for complex three-dimensional objects, are used.
4
Range
a Materials must be of 3mm or greater thickness.
b Tools and equipment may include but are not limited to – files, hacksaws, taps,
dies, reamers, hammers, drills callipers, squares, dividers, rules, protractors,
radius and beam gauges, tape measures, straight edges, combination sets, chalk
line, trammels, punches, angle meters, clamps, spanners, screw drivers, Allen
keys.
c Machinery types may include but are not limited to – grinders, saws, drilling
machines, metal bending and rolling machines, hole punches, metal cutting
machines, riveting tools, NC and CNC machines, laser cutting machines, water-jet
metal cutting machines, air-arc gouging machines, plasma cutting machines.
Elements and performance criteria
Element 1
Demonstrate knowledge of advanced heavy fabrication trade practice.
Performance criteria
1.1
Technical processes and practices used in the fabrication industry are
described in accordance with industry practice.
Range
material selection, material optimisation, material preparation
distortion control, stiffeners, doublers, compensation plate, joint
preparation, fabrication allowances, finishing, principles and use of
jigs.
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25709 version 1
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1.2
Fabrication machinery using current technology is described with reference to
operating principles and material handling capability in accordance with
worksite procedures and safety guidelines.
Range
1.3
Factors influencing efficient fabrication in modern plants are outlined.
Range
1.4
laser cutters, plasma cutters, water-jet cutters, sheet metal
benders, punching machines, shearers/guillotenes, press brakes,
powered rollers, welders.
job scheduling, time management, quality control, warehousing,
ordering, inventory control, resource management.
Potential hazards associated with the use of modern machinery are described
in accordance with industry practice and safety guidelines.
Element 2
Demonstrate knowledge of aluminium used in heavy fabrication trade practice.
Performance criteria
2.1
Tempering method and alloying elements are determined for aluminium
products, given their classification codes, in accordance with industry practice.
Range
determination for three products is required;
product coding tables are to be available for assessment.
2.2
Design features of aluminium structures are outlined, as compared to steel
structures.
2.3
Behaviour of welded aluminium structures are described in relation to strength,
stress and design features.
Element 3
Prepare for fabrication.
Performance criteria
3.1
Job specifications are interpreted and the work planned in accordance with
industry practice.
3.2
Machines and equipment are selected and their operating procedures
determined in accordance with industry practice.
3.3
Tools are identified and their fitness for use is confirmed in accordance with
industry practice and safety guidelines.
3.4
Fabrication and assembly allowances are calculated and applied in accordance
with industry practice.
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3.5
Alignment marks and datum points are marked in accordance with job
specifications and industry practice.
3.6
Machine settings are checked and set to comply with job specifications in
accordance with industry practice.
Element 4
Fabricate complex objects for the heavy fabrication industry.
Range
complex objects – four complex objects, each based on two or more of unequal
diameter and offset cylindrical, pyramidal, conical, square or rectangular shapes
between inclined planes; one assembly incorporating at least two of the
complex objects;
materials must include at least – two different metals; two metal thicknesses 3
mm minimum, including plate; two structural shapes (e.g. flat bar, rod, pipe,
rectangular hollow section, channel, angle etc).
Performance criteria
4.1
Fabrications demonstrate use of fabrication processes in accordance with
industry practice.
Range
fabrication processes – laying out, marking, cutting, forming,
assembling, use of jigs and machine fixtures.
4.2
Fabrications demonstrate application of safe work practices in accordance with
safety guidelines.
4.3
Fabricated objects are inspected and measured for compliance with job
specifications, and any deviations identified.
Element 5
Care for and maintain fabrication workplace, machines, and equipment.
Performance criteria
5.1
Routine checks, adjustments and lubrication are carried out in accordance with
machine operating procedures and worksite procedures.
5.2
Machines and equipment are maintained in clean and safe condition and ready
for next use.
5.3
Unusable tools and equipment are reported to the supervisor.
5.4
Waste materials are disposed of and unused materials stored in accordance
with worksite procedures.
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Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP 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.
 New Zealand Qualifications Authority 2016