Elements and Performance Criteria

includes interpretation of plans and specifications
includes sizing and documenting layout of complex cold water systems for applications including residential, commercial and industrial
may be for new projects or an existing structure being renovated, extended, restored or maintained.

architectural specifications
builder specifications
owner requirements
specialist water use applications.

comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising the integrity of the project.

Acts and regulations
local and state government policies.

AS/NZS3500 National plumbing and drainage set: Parts 1.1 and 1.2
AS2200 Design charts for water supply and sewerage
Building Code of Australia.

material specifications
pump tables
sizing tables
technical and trade manuals.

architectural and building plans
council plans
developer plans
other documents and reports as available.

on-site measurement of flow (l and s), velocity (m and s) and pressure (kPa)
interpretation of flow and pressure tests conducted by a contractor.

flow, velocity, pressure and discharge requirements, established using Australian and New Zealand standards and local authority plans.

dual feed
ring main
single pipe.

fittings:
bends
elbows
tees
unions
valves:
backflow prevention
excess pressure
isolating
pressure limiting
pressure reduction
strainers.

break tanks
property and individual protection
testable and non-testable devices
zone protection.

backflow prevention requirements
gravity
mains pressure
pipe sizing requirements
storage requirements.

meter assemblies, including:
direct and indirect
electronic
inferential
magnetic
thrust blocks and their design elements, including:
design details for tees, elbows, valves and meter assemblies
keying and anchorage points
sizes
soil characteristics
velocity and flow forces to be resisted
pipe fixings, including:
anchors
bedding
bracket spacing
corrosion protection
cover
hanging brackets
material requirements
saddles
wall and ceiling brackets
water storage systems, including:
automatic controls
inlet valve design and sizing
outlet sizing
overflow requirements
safe tray requirements
tank sizes.

automatic controls
impeller sizing
inlet and outlet design requirements
installation and mounting requirements
pump selection
pump sizing
space requirements
valve requirements.

acrilonitrile butadiene styrene (ABS)
composite pipework
copper
cross-linked polyethylene
fittings and fixtures
polybutylene
protective coatings
steel.

brazing
compression
flaring
mechanical joints
rubber ring joints
screwing
soldering.

bedding
clipping
installation details
jointing requirements
level of workmanship.

constant flow variable speed pumps
downfeed
hydropneumatic
pressure ratio
upfeed.

axonometrics
cross-sections
details
elevations
isometrics
schematics
sections.

bedding
clipping
jointing
manufacturer
materials
specialised components
valve selection
workmanship.

air pressure test
defect inspection
hydrostatic test
mains pressure test
quality assurance (QA) audit.

flow test
leak check
pressure test
system purge
valve operation.

leak detection
pump maintenance
valve maintenance
water auditing
yearly inspection
yearly maintenance requirements.

Overview of assessment
This unit of competency could be assessed in the workplace or a close simulation of the workplace environment providing that simulated or project-based assessment techniques fully replicate plumbing and services workplace conditions, materials, activities, responsibilities and procedures.
It may be assessed on its own or as part of an integrated assessment activity involving effective performance and application of drainage principles and detailing of system components used in the drainage industry.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

A person who demonstrates competency in this unit must be able to provide evidence of:

evaluating and documenting design parameters, including client, regulatory, manufacturer and Australian and New Zealand standard requirements for a range of complex sanitary plumbing and drainage systems
applying regulatory, manufacturer and Australian and New Zealand requirements for a range of complex cold water distribution systems

planning and detailing system components, including:

flush valves
backflow prevention devices
meter assemblies
thrust blocks
piping systems
complying with OHS regulations applicable to workplace operations
applying organisational quality procedures and processes
designing and sizing a range of cold water distribution and delivery systems
designing and sizing a range of flush valve systems
preparing plans for a range of complex cold water distribution systems
preparing a specification for a cold water distribution system
preparing a testing and commissioning schedule
preparing an operation and maintenance manual
applying correct design principles and techniques
identifying typical faults and problems that occur and taking action necessary to rectify
interactive communication with others to ensure safe and effective workplace operations.

Context of and specific resources for assessment
This competency is to be assessed using standard and authorised work practices, safety requirements and environmental constraints.
Assessment of essential underpinning knowledge will usually be conducted in an off-site context.
Assessment is to comply with relevant regulatory or Australian standards' requirements.

Resource implications for assessment include:

an induction procedure and requirement
realistic tasks or simulated tasks covering the mandatory task requirements
relevant specifications and work instructions
tools and equipment appropriate to applying safe work practices
support materials appropriate to activity
workplace instructions relating to safe working practices and addressing hazards and emergencies
material safety data sheets
research resources, including industry related systems information.
Reasonable adjustments for people with disabilities must be made to assessment processes where required. This could include access to modified equipment and other physical resources, and the provision of appropriate assessment support.

Method of assessment

Assessment methods must:

satisfy the endorsed Assessment Guidelines of the Construction, Plumbing and Services Integrated Framework Training Package
include direct observation of tasks in real or simulated work conditions, with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application
reinforce the integration of employability skills with workplace tasks and job roles
confirm that competency is verified and able to be transferred to other circumstances and environments.

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, with a decision on competency only taken at the point when the assessor has complete confidence in the person's demonstrated ability and applied knowledge
all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence.
Assessment processes and techniques should as far as is practical take into account the language, literacy and numeracy capacity of the candidate in relation to the competency being assessed.
Supplementary evidence of competency may be obtained from relevant authenticated documentation from third parties, such as existing supervisors, team leaders or specialist training staff.