286 Demonstrate Knowledge of Advanced Extrusion Tooling and Change Extruder Screws
NZQA Expiring unit standard / 286 version 6
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Title / Demonstrate knowledge of advanced extrusion tooling and change extruder screws
Level / 3 / Credits / 6
Purpose / People credited with this unit standard are able to: demonstrate knowledge of the construction of advanced extrusion tooling; and describe the reasons for removal and refitting of extruder screws, and remove and refit an extruder screw or screws.
Classification / Plastics Processing Technology > Extrusion
Available grade / Achieved
Recommended skills and knowledge / Unit 283, Run and control the extrusion production process; and Unit 285, Change dies and set ancillary equipment for extrusion.
Enterprise– an organisation where training and/or assessment is taking place, and/or where the trainee is employed.
Enterprise procedures– actions which comply with the policies, systems, and directives in a particular enterprise. Enterprise procedure must comply with the requirements of the Health and Safety in Employment Act 1992, and subsequent amendments.
Advanced extrusion tooling refers to – mechanically and thermally auto-centred pipe dies; multi-strand dies; co-extrusion dies for sheet, pipe, profile, and cablemaking.
2For assessment, the performance of all outcomes must take place in accordance with enterprise procedures.
Outcomes and evidence requirements
Demonstrate knowledge of the construction of advanced extrusion tooling.
1.1The construction and applications of advanced extrusion tooling are described using engineering drawings.
Rangeadvanced extrusion tooling includes – mechanically and thermally auto-centred pipe dies; multi-strand dies; co-extrusion dies for sheet, pipe, profile, and cablemaking.
Describe the reasons for the removal and refitting of extruder screws, and remove and refit an extruder screw or screws.
2.1The reasons for removing, measuring, and refitting extruder screw or screws are described.
2.2Screw or screws are removed using machine manufacturer’s specifications.
2.3Screw or screws and barrel are cleaned and inspected for wear and damage.
2.4Screw or screws are identified and fitted using machine manufacturer’s specifications.
This unit standard is expiring. Assessment against the standard must take place by the last date for assessment set out below.
Status information and last date for assessment for superseded versionsProcess / Version / Date / Last Date for Assessment
Registration / 1 / 28 April 1993 / 31 December 2014
Revision / 2 / 13 February 1997 / 31 December 2014
Review / 3 / 23 January 1998 / 31 December 2014
Review / 4 / 27 October 2005 / 31 December 2014
Review / 5 / 15 September 2011 / 31 December 2019
Review / 6 / 15 September 2016 / 31 December 2019
Consent and Moderation Requirements (CMR) reference / 0134
This CMR can be accessed at
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.Competenz
SSB Code 101571 / New Zealand Qualifications Authority 2018 / / New Zealand Qualifications Aut