NZQA Expiring unit standard
23282 version 3
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Title
Install pipes and their fittings for infrastructure pipelaying
Level
3
Credits
40
Purpose
People credited with this unit standard are able to: prepare for
the installation of infrastructure pipes and their fittings; control
the excavation; lay bedding and install infrastructure pipes and
their fittings; backfill and compact; clear the line; and carry out
testing procedures and rectify any deficiencies.
Classification
Civil Works and Services > Civil Construction Works
Available grade
Achieved
Explanatory notes
1
The following legislation and requirements apply to this unit standard:
Health and Safety in Employment Act 1992;
Resource Management Act 1991;
Approved Code of Practice for Safety in Excavation and Shafts for Foundations
(Wellington: Department of Labour, 1995) (the Excavation Code), Part 1: Trenches
and Open Excavations, Sections 4 to 7. The Excavation Code is available from
http://www.osh.govt.nz/order/catalogue;
Territorial authority requirements;
Pipe and fitting manufacturers’ installation requirements.
Other requirements applicable to this unit standard may include but are not limited to:
SNZ HB 2002:2003, Code of Practice for Working in the Road;
AS/NZS 2280:2004, Ductile iron pipes and fittings;
AS/NZS 2566.2:2002, Buried flexible pipelines – Installation;
AS/NZS 3725:2007, Design for installation of buried concrete pipes;
NZS 5821.2:1981, Laser safety – Plain language code of practice for the safe use of
lasers in surveying, levelling and alignment; and
NZS 7643:1979, Code of practice for the installation of unplasticized PVC pipe
systems; all available from http://www.standards.co.nz;
OSH (Occupational Safety and Health Service of the Department of Labour)
notification;
Overhead cable or other permit;
Code of Practice for Temporary Traffic Management produced by Transit
New Zealand, available from http://www.transit.govt.nz/technical/copttm.jsp; or
equivalent specification as required by the road controlling authority on its network;
TNZ F/03 2000, Pipe Culvert Construction (Wellington: Transit New Zealand, 2000)
available from http://www.transit.govt.nz/technical/specifications.jsp.
2
Assessment against this unit standard must be based on evidence from a workplace
context.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3
23282 version 3
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Personal protective equipment, appropriate to job requirements, is to be selected and
used in accordance with company procedures and manufacturer’s instructions.
4
Range
Includes trenching and excavation over 1.5 metres in depth for at least one operation;
Pipes and their fittings – sanitary sewage, stormwater, and one other which may include
but is not limited to water, gas, or ducting.
5
Definitions
Company requirements include the policy, procedures, and methodologies of the
company. They include legislative and regulatory requirements, which may apply
across the company or to a specific site. Requirements are documented in the
company’s health and safety plans, traffic management plans, contract work
programmes, quality assurance programmes, policies, and procedural documents.
Contract specifications include plans, diagrams, and special technical conditions.
They do not include special administrative conditions.
Fittings include connections (tapping saddles, junctions, access point connectors),
bends (sweeping, tight), valves (isolation, backflow, pressure reducing, air release),
filters, joiners, hydrants, and meters.
Immediate environment refers to the environment in which the work is taking place such
as inner city, suburban, or rural, and may include the presence of nearby structures.
Infrastructure pipelaying refers to the installation of infrastructure pipes, fittings, and
associated structures in the road and elsewhere, normally beyond the boundary of
private property. Infrastructure pipes include sanitary sewage and stormwater, and
may include pipes or ducting for other services such as water, gas, electricity, or
telecommunications. For the purposes of this unit standard it does not include the
commissioning of the pipes or the installation of services they may house; nor does it
include jointing required to be carried out by a licensed specialist.
Manufacturer’s instructions may include specifications; installation, handling, use, and
maintenance instructions; and safety data sheets.
Outcomes and evidence requirements
Outcome 1
Prepare for the installation of infrastructure pipes and their fittings.
Evidence requirements
1.1
A check is made to ensure the plan supplied is the current approved plan for the
project, and any discrepancies are reported in accordance with company
requirements.
1.2
A check is made to ensure the set-out is correct, and any errors are reported in
accordance with company requirements.
1.3
A check is made to ensure that pipes, fittings, materials, plant, and equipment
are as required for the installation, and any concerns are reported in
accordance with company requirements.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
23282 version 3
Page 3 of 5
1.4
A check is made to ensure that pipes, fittings, materials, plant, and equipment
are located to ensure a safe and efficient operation, and any concerns are
reported in accordance with company requirements.
1.5
Site is checked for hazards, and any hazards requiring control are reported or
are controlled in accordance with company requirements.
Outcome 2
Control the excavation.
Evidence requirements
2.1
Line and grade are confirmed in accordance with company requirements and
job specifications.
2.2
Taking into account variables of the situation, the excavation process is
controlled in accordance with company and territorial authority requirements,
with no risk of harm to persons or damage to plant or equipment.
Range
variables of the situation must include – ground conditions,
immediate environment;
they may also include but are not limited to – efficiency
considerations, other infrastructure services.
2.3
As required, and taking into account variables of the situation, control ensures
that the excavation is shored or otherwise stabilised in accordance with the
Excavation Code.
2.4
As required, groundwater is controlled without destabilising the excavation, and
in accordance with company requirements and territorial authority requirements
for environmental protection.
2.5
Control ensures that actions to deal with any inadequate subgrade are carried
out in accordance with company and territorial authority requirements and
contract specifications.
2.6
Control ensures that excavation line, grade, and dimensions are in accordance
with job specifications and company requirements.
Outcome 3
Lay bedding and install infrastructure pipes and their fittings.
Evidence requirements
3.1
Bedding material is placed in accordance with contract specifications and
company procedures to allow pipes and fittings to be installed in accordance
with contract specifications, territorial authority requirements, and pipe
manufacturer’s installation requirements.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
3.2
Pipes and fittings are installed in accordance with contract specifications, and
company requirements, with no risk of harm to persons or damage to pipes,
fittings, plant, or equipment.
Range
3.3
23282 version 3
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fittings – five types of fitting, including at least one type of
connection, at least one type of bend, and at least one type of
valve.
Pipes are jointed in accordance with manufacturer’s installation requirements,
contract specifications, and company requirements.
Range
excludes pipes that require jointing by a licensed specialist.
3.4
Fittings are installed in accordance with manufacturer’s installation
requirements, contract specifications, and company requirements.
3.5
Installation checks are made in accordance with contract specifications and/or
company requirements.
3.6
As-built records are completed in accordance with contract specifications and
company requirements.
Outcome 4
Backfill and compact.
Evidence requirements
4.1
A check is made to ensure backfill material meets contract specifications, and
any discrepancies are reported in accordance with company requirements.
4.2
Backfill material is placed and compacted to meet contract specifications in
accordance with company requirements, with no risk of harm to persons or
damage to pipes, fittings, plant, or equipment.
Range
4.3
includes compaction testing in accordance with territorial authority
requirements and contract specifications.
Warning tape is installed, as required, in accordance with contract specifications
and company requirements.
Outcome 5
Clear the line.
Range
excludes potable water pipe sterilisation and flushing.
Evidence requirements
5.1
The line is cleared in accordance with contract specifications, and territorial
authority and company requirements.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016
NZQA Expiring unit standard
23282 version 3
Page 5 of 5
Outcome 6
Carry out testing procedures and rectify any deficiencies.
Evidence requirements
6.1
Testing is carried out in accordance with company requirements to determine
that installed pipes and fittings function within tolerances in contract
specifications and/or territorial authority requirements, and any deficiencies are
identified, reported, and rectified in accordance with company requirements.
Range
may include but is not limited to high pressure water test,
hydrostatic test, close circuit TV;
two types of test.
Replacement information
This unit standard was replaced by unit standard 27327.
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 versions
Process
Version Date
Last Date for Assessment
Registration
1
26 January 2007
30 December 2016
Review
2
21 November 2008
30 December 2016
Review
3
21 July 2011
30 December 2016
Consent and Moderation Requirements (CMR) reference
0101
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.
Infrastructure ITO
SSB Code 101813
 New Zealand Qualifications Authority 2016