Unit of competency Outline

Date retreived
23/07/2026 7:27 AM AWST

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Construct and install wastewater pipelines

Construct and install wastewater pipelines

Unit of competency
National Code
NWP250B
State Code
D1865
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
2.00
Current Release Date
30/04/2012
State Implementation and Classification
Approved Date
14/01/2009
Field of Education
030907 - Water And Sanitary Engineering
Original Release Date
14/01/2009
Nominal Hours
30
Description
This unit of competency describes the outcomes required to construct and install wastewater collection assets.
Notes
Elements and Performance Criteria
1Plan and prepare construction and installation of collection pipelines.
  • 1.1 Determine work requirements for construction and installation from plans, specifications and instructions.
  • 1.2 Perform site check to prevent damage to other utilities according to legislative and organisational requirements.
  • 1.3 Select and check equipment and tools required to meet safety requirements of task and site.
  • 1.4 Identify potential risks to public and environment, and take appropriate steps to minimise and eliminate risks.
2Construct and install collection pipelines.
  • 2.1 Select, fit and use personal protective equipment.
  • 2.2 Excavate and prepare trenches according to specifications and legislative and organisational requirements.
  • 2.3 Lay bedding or foundation according to specifications.
  • 2.4 Select and lay or join pipes and fittings to grade according to manufacturer guidelines and organisational requirements.
  • 2.5 Backfill excavations according to specifications.
3Review construction and installation of collection assets.
  • 3.1 Check constructed or installed collection pipes and fittings to ensure specifications are met.
  • 3.2 Check, maintain and store equipment, tools and materials according to manufacturer guidelines and organisational procedures.
  • 3.3 Restore work site to meet environmental and organisational requirements.
  • 3.4 Complete workplace records and as constructed drawings and process as required.
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts.
Work requirements may include:
location and extent of job
risk assessment recommendations
involvement of subcontractors
equipment specifications
material specifications
utilities' location procedures
environmental protection requirements
boundary protection
signage and traffic management
Equipment and tools may include:
hand and power tools
lifting and winching equipment
mechanical excavation equipment
levering equipment
pneumatic and motorised equipment, including:
compressors
pneumatic spades and attachments
motorised cutting equipment
pipes and associated fittings
on- and off-road vehicles
portable pumps
pipe laying laser
rotating laser
profiles
automatic level
communication equipment
breathing apparatus
gas detection equipment
rescue equipment
appropriate personal protective equipment
Legislative and organisational requirements may include:
relevant federal and state or territory legislation and regulations
codes of practice, associated standards and guidance material
documented organisational policies, manuals and induction programs
relevant community planning and development agreements, such as land care agreements
Pipes may include:
vitrified clay
reinforced concrete
polyvinyl chloride (PVC)
polyethylene
cast iron
ductile iron cement lined
glass reinforced piping
mild steel cement lined
Fittings may include:
jointing systems for pipe types, e.g. gibault
tension bands
solvent cement joints
compression ring joints
bolted flanges
cathodic protection
electrofusion
butt welding
The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, the range statement and the Assessment Guidelines for the Training Package.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The candidate should demonstrate the ability to construct and install wastewater collection system pipelines by:
planning work and preparing work site safely
constructing and installing pipes according to specifications and instructions
checking quality of work
clearing work site
completing documentation
Context of and specific resources for assessment
Access to the workplace and resources including:
documentation that should normally be available in a water industry organisation
relevant codes, standards and government regulations
Where applicable, physical resources should include equipment modified for people with disabilities.
Access must be provided to appropriate learning and assessment support when required.
Assessment processes and techniques must be culturally appropriate, and appropriate to the language and literacy capacity of the candidate and the work being performed.
Validity and sufficiency of evidence requires that:
competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace
where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice
a decision of competence should only be made when the assessor has complete confidence in the person's competence over time and in various contexts
all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence
where assessment is for the purpose of recognition (RCC/RPL), the evidence provided will need to be authenticated and show that it represents competency demonstrated over a period of time
assessment can be through simulated project-based activity and must include evidence relating to each of the elements in this unit
Questioning will be undertaken in a manner appropriate to the skill levels of the operator and cultural issues that may affect responses to the questions, and will reflect the requirements of the competency and the work being performed.
Replaces
State Code National Code Title Type
M1874 NWP250A Construct wastewater collection assets Unit of competency
Replaced By
State Code National Code Title Type
AVY65 NWPNET032 Construct and install wastewater assets Unit of competency
State Code National Code Title Type
D244 NWP20107 Certificate II in Water Operations Qualification