Unit of competency Outline
Date retreived
23/07/2026 8:00 AM AWST
23/07/2026 8:00 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 drainage assets
Maintain and repair drainage assets
Unit of competency
National Code
NWP231B
NWP231B
State Code
D1852
D1852
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
30
Description
This unit of competency describes the outcomes required to conduct maintenance and repair activities on drainage assets.
Notes
Elements and Performance Criteria
1Plan and prepare for work.
- 1.1 Determine work requirements from plans, drawings, specifications or instructions.
- 1.2 Check site and identify hazards according to legislative and organisational requirements.
- 1.3 Make appropriate drainage and inflow diversion arrangements without damage to environment.
- 1.4 Select and check equipment and excavation methods to meet safety requirements of task and site.
- 1.5 Select, fit and use personal protective equipment.
2Maintain drainage assets.
- 2.1 Conduct routine inspections to determine asset condition and operational capacity according to organisational requirements.
- 2.2 Conduct preventative maintenance according to organisational maintenance programs.
- 2.3 Repair damaged components according to specification, location and organisational requirements.
- 2.4 Remove debris, silt and obstructions according to legislative and organisational requirements.
- 2.5 Select, place and join prefabricated drain sections according to manufacturer specifications and legislative and organisational requirements.
- 2.6 Construct cast in situ components according to specifications and legislative and organisational requirements.
- 2.7 Check repaired and replaced components to ensure that specifications have been met.
3Finalise work.
- 3.1 Backfill, compact and restore work site to meet environmental and organisational requirements.
- 3.2 Check, maintain and store equipment, tools and materials according to manufacturer guidelines and organisational procedures.
- 3.3 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.
Work requirements may include:
site boundaries
boundary protection
extent of work
utilities location
safe work methods
Hazards may include:
damage to other utilities
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
Equipment used may include:
personal protective equipment
hand and power tools
on- and off-road vehicles
lifting and winching equipment
mechanical excavation equipment
compressors
pneumatic spaders and attachments
motorised cutting equipment
chemical spraying apparatus
small marine craft
trenching systems
portable pumps
communication equipment
breathing apparatus
gas detection equipment
rescue equipment
Assets may include:
controlling equipment
channels
drains
meter pits
access chambers
collection chambers
drop structures
erosion barriers
anti-pollution devices
grates
head walls
pipes
outlets
regulators
pipes, including:
vitrified clay
polyvinyl chloride (PVC)
polyethylene
reinforced concrete
glass reinforced piping
ductile iron cement lined
cast iron cement lined
fittings, including:
jointing systems for pipe types and prefabricated sections, e.g. gibault and tension bands
solvent cement joints
compression rings
bolted flanges
malleable jointing materials
electrofusion
butt welding
prefabricated sections, including:
drainage sections
drainage pits
culverts
under road crossovers
person access pits
siphons
meter outlets
Work requirements may include:
site boundaries
boundary protection
extent of work
utilities location
safe work methods
Hazards may include:
damage to other utilities
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
Equipment used may include:
personal protective equipment
hand and power tools
on- and off-road vehicles
lifting and winching equipment
mechanical excavation equipment
compressors
pneumatic spaders and attachments
motorised cutting equipment
chemical spraying apparatus
small marine craft
trenching systems
portable pumps
communication equipment
breathing apparatus
gas detection equipment
rescue equipment
Assets may include:
controlling equipment
channels
drains
meter pits
access chambers
collection chambers
drop structures
erosion barriers
anti-pollution devices
grates
head walls
pipes
outlets
regulators
pipes, including:
vitrified clay
polyvinyl chloride (PVC)
polyethylene
reinforced concrete
glass reinforced piping
ductile iron cement lined
cast iron cement lined
fittings, including:
jointing systems for pipe types and prefabricated sections, e.g. gibault and tension bands
solvent cement joints
compression rings
bolted flanges
malleable jointing materials
electrofusion
butt welding
prefabricated sections, including:
drainage sections
drainage pits
culverts
under road crossovers
person access pits
siphons
meter outlets
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 perform maintenance and repair work on drainage assets by:
planning and preparing work site
performing maintenance and repair tasks 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
In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge. 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.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The candidate should demonstrate the ability to perform maintenance and repair work on drainage assets by:
planning and preparing work site
performing maintenance and repair tasks 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
In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge. 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 |
|---|---|---|---|
| M1862 | NWP231A | Maintain drainage assets | Unit of competency |
| State Code | National Code | Title | Type |
|---|---|---|---|
| D244 | NWP20107 | Certificate II in Water Operations | Qualification |