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Title / Install plastics pipe work according to plans and specifications under supervision
Level / 3 / Credits / 10
Purpose / This unit standard is for people who work, or intend to work, in the heating, ventilation and air conditioning sector of the engineering industry. People credited with this unit standard are able, under supervision, to: procure materials for plastic pipe work installation and set out the job; install hangers, pipes and fittings and join plastic pipe; and test the pipe work.
Classification / Mechanical Engineering > Heating, Ventilating, and Air Conditioning
Available grade / Achieved
Explanatory notes
1Work site documents include contracts and any documented installation and operating procedures for the system, mechanical service, and pipe work to be installed.
2All work site practices must meet recognised codes of practice and documented safety procedures and safety plans (where these exceed code) for personal and work site safety, and obligations required under current legislation.
3Installation programme refers to any documented programme for installing the system (eg, a construction programme).
Outcomes and evidence requirements
Outcome 1
Prepare to install pipe work.
Evidence requirements
1.1Materials required for job match work site documents and supervisor’s instructions.
1.2Quantities of materials requisitioned and received are checked against inventory.
1.3Setting out of job is in accordance with work site documents and supervisor’s instructions.
Outcome 2
Install pipe work.
Evidence requirements
2.1Hangers are installed to structural and seismic standards specified in work site documents.
2.2Plastic pipe is cut, assembled, and joined to industry standard specified in work site documents, including solvent cementing and welding.
2.3Hangers and plastic pipe are installed and spaced in accordance with work site documents and operational practice.
2.4Installation is completed without unplanned cost or waste.
2.5Installation is completed so that commissioning and maintenance can be carried out without alteration to installation.
2.6Installation is completed so that control instructions and identifications can be read.
2.7Installation is completed so that conflicts with other systems and components have been resolved.
2.8Installation meets installation programme schedule and requirements.
Outcome 3
Test the pipe work.
Evidence requirements
3.1Pipe work test shows pipe work meets operational requirements specified in work site documents.
3.2Test record is produced and passed by inspecting authority specified in work site documents.
Replacement information / This unit standard, unit standard 3234, and unit standard 3235 have been replaced by unit standard 26334.This unit standard is expiring. Assessment against the standard must take place before the expiry date set out below.
Status information and last date for assessment for superseded versions
Process / Version / Date / Last Date for AssessmentRegistration / 1 / 30 January 1995 / 31 December 2016
Revision / 2 / 14 April 1997 / 31 December 2016
Revision / 3 / 5 January 1999 / 31 December 2016
Revision / 4 / 18 May 2001 / 31 December 2016
Revision / 5 / 16 April 2002 / 31 December 2016
Review / 6 / 16 July 2010 / 31 December 2016
Rollover / 7 / 19 November 2015 / 31 December 2020
Consent and Moderation Requirements (CMR) reference / 0013
This CMR can be accessed at
Please note
Providers must be granted consent to assess against standards (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 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.
Consent requirements and an outline of the moderation system that applies to this standard are outlined in the 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 at if you wish to suggest changes to the content of this unit standard.
CompetenzSSB Code 101571 / New Zealand Qualifications Authority 2018