Unit of competency Outline
Date retreived
23/07/2026 7:21 AM AWST
23/07/2026 7:21 AM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Maintain and repair wastewater collection assets
Maintain and repair wastewater collection assets
Unit of competency
National Code
NWP255B
NWP255B
State Code
D1870
D1870
TGA Status
Deleted
Deleted
DTWD Status
Deleted
Deleted
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
20
Description
This unit of competency describes the outcomes required to maintain and repair pipes, drains and wastewater collection assets.
Notes
Elements and Performance Criteria
1Plan and prepare for maintenance.
- 1.1 Determine work requirements for maintenance and repair of assets from working drawings, plans, specifications and instructions.
- 1.2 Select and check equipment and tools required to meet safety requirements of task and site.
- 1.3 Select, fit and use personal protective equipment.
2Conduct maintenance and repair work.
- 2.1 Locate and remove system chokes and blockages to achieve maximum system performance.
- 2.2 Repair or replace leakages and damaged assets to meet test specifications.
- 2.3 Repair or replace structures as required to meet operational, legislative and organisational requirements.
- 2.4 Check maintained and repaired assets to ensure that specifications have been met.
3Finalise work.
- 3.1 Check, maintain and store equipment, tools and materials according to manufacturer guidelines and organisational procedures.
- 3.2 Complete workplace records 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.
Assets may include:
collection system's pipe work, including:
vitrified clay
reinforced concrete
polyvinyl chloride (PVC)
polyethylene
cast iron cement lined
ductile iron cement lined
glass reinforced piping
mild steel cement lined
structures, including:
meter pits
valve pits
drop structures
regulators
erosion barriers
person access chambers and pits
head walls
thrust blocks
inspection shafts
controlling equipment
fittings, including:
jointing systems for pipe types, e.g. gibault
tension bands
solvent cement joints
compression ring joints
bolted flanges
cathodic protection
electrofusion
butt-welding
Equipment and tools may include:
hand and power tools
lifting and winching equipment
mechanical excavation equipment
local repair by electronic means, including:
top hats
patches
pneumatic and motorised equipment, including:
compressors
pneumatic spades and attachments
motorised cutting equipment
conventional and jet rodding systems
on- and off-road vehicles
portable pumps
communication equipment
closed circuit television (CCTV) equipment to survey repairs
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
Assets may include:
collection system's pipe work, including:
vitrified clay
reinforced concrete
polyvinyl chloride (PVC)
polyethylene
cast iron cement lined
ductile iron cement lined
glass reinforced piping
mild steel cement lined
structures, including:
meter pits
valve pits
drop structures
regulators
erosion barriers
person access chambers and pits
head walls
thrust blocks
inspection shafts
controlling equipment
fittings, including:
jointing systems for pipe types, e.g. gibault
tension bands
solvent cement joints
compression ring joints
bolted flanges
cathodic protection
electrofusion
butt-welding
Equipment and tools may include:
hand and power tools
lifting and winching equipment
mechanical excavation equipment
local repair by electronic means, including:
top hats
patches
pneumatic and motorised equipment, including:
compressors
pneumatic spades and attachments
motorised cutting equipment
conventional and jet rodding systems
on- and off-road vehicles
portable pumps
communication equipment
closed circuit television (CCTV) equipment to survey repairs
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
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 conduct maintenance and repair work on wastewater collection assets by:
planning and preparing work site
performing maintenance and repair tasks on pipe work and structures according to manufacturer specifications and organisational requirements
checking work, restoring work site, storing equipment and 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 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.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The candidate should demonstrate the ability to conduct maintenance and repair work on wastewater collection assets by:
planning and preparing work site
performing maintenance and repair tasks on pipe work and structures according to manufacturer specifications and organisational requirements
checking work, restoring work site, storing equipment and 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 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 |
|---|---|---|---|
| M1879 | NWP255A | Maintain wastewater collection assets | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| A109 | UEE21311 | Certificate II in Remote Area Essential Service | Qualification |
| D244 | NWP20107 | Certificate II in Water Operations | Qualification |