Elements and Performance Criteria

includes interpretation of plans and specifications
includes sizing and documenting layout of hot water supply and distribution 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 hot water use applications.

design styles
durability and available design life
energy costs
labour costs
material costs
safety factors
speed of installation
suitable materials
system choices.

Acts and regulations
Australian and New Zealand standards, including AS/NZS3500 National plumbing and drainage set: Parts 4.1 and 4.2
Building Code of Australia
local and state government policies, including group and strata titling.

material specifications
pump tables
sizing tables
technical and trade manuals.

architectural and building plans
council plans
developer plans
other documents, including:
applications
forms
sewer detail maps
other reports as available.

those established using Australian and New Zealand standards and local authority plans.

dead leg systems
pumped systems
thermo convection systems.

fittings:
bends
tees
unions
valve trains
valves:
backflow prevention
cold water expansion
isolating
non-return, including high pressure non-return
pressure limiting
pressure relief
strainers.

alcohol
bimetallic types
wax capsule.

circulating pump specification
dead leg minimisation
flow and return pipework
speed of circulation
thermal convection circulating systems.

cost
installation requirements.

coefficient of expansion
daily flows
energy calculations
heat loss calculations
mixed temperature calculations
peak demand
recovery times
size and quantity of hot water required
standby versus continual flow
tariff calculations
water expansion calculations.

bends
lyre loops and full loops
offsets
proprietary expansion control devices.

anchors
bracket spacing
corrosion protection
hanging brackets
material requirements
saddles
wall and ceiling brackets.

balanced flow conditions and valves
pressure relief requirements.

continuous flow
electric
gas
heat transfer
high pressure
low pressure
other fuel sources
solar
storage
vented atmospheric pressure systems.

above habitable areas
heights
materials
sizes
space requirements.

composite pipe materials and other pipe materials as specified
copper
fittings and fixtures
polybutylene.

brazing
compression
flaring
mechanical joints
threading.

density
diameter
felt
fibre glass
foam
heat losses
heat transmission processes
rock wool
thickness.

clipping
installation details
jointing requirements
level of workmanship.

approved pressure pipes and fittings
calculated rise and pump delivery requirements
pump sizing to meet calculated flow conditions.

can include:
axonometrics
cross-sections
details
elevations
isometrics
schematics
sections
may be produced using:
computer generation
Indian ink
pencil
pigment liner.

bedding
clipping
concrete support
jointing
manholes
manufacturer requirements
materials
workmanship.

air pressure test
hydrostatic test
quality assurance (QA) audit.

balancing the system
checking and flushing the system
temperature setting.

check for blockages
leak detection
pump 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 principles used to design complex (non-solar) hot water systems.

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 hot water supply and distribution systems

planning and detailing system components, including:

tempering valves
manifolding systems
insulation requirements
flow and return systems
complying with OHS regulations applicable to workplace operations
applying organisational quality procedures and processes within context of designing complex hot water systems
designing and sizing a range of hot water supply and distribution systems
designing and sizing a range of circulating systems
sound preparation of plans for a range of hot water supply and distribution systems
sound preparation of a specification for a hot water supply and distribution system
sound preparation of a testing and commissioning schedule
preparing an operation and maintenance manual
interactive communication with others to ensure safe and effective work site 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.