Elements and Performance Criteria

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. 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) may also be included.
Scope of work:
must include:
documenting layout of sound attenuated hydraulic services, including reduction of noise transfer for residential, commercial and industrial applications
interpreting plans and specifications
may be for new projects or an existing structure being renovated, extended, restored or maintained.

Design requirements must include:
architectural plans
building specifications
acoustic performance of fixtures, fittings and equipment
building construction materials
fire rating of penetrations
owner requirements
pipe enclosures
pipework identification
specialist applications.

Cost-benefit analysis:
compares the range of suitable materials and system choices available to enable cost-effective choices to be made without compromising integrity of project
may include:
design styles
energy costs
expected design life
labour costs
material costs
safety factors
speed of installation
suitable materials
system choices.

Statutory and regulatory requirements and Australian standards may include:
Acts, regulations and commonwealth, state or territory, and local government requirements
National Construction Code
AS/NZS3500 National plumbing and drainage
AS2200 Design charts for water supply and sewerage
other relevant Australian standards.

Manufacturer requirements may include:
analysis of sound transmission values
acoustic performance of fixtures, fittings and equipment
specifications
technical and trade manuals.

Desktop study may include collection and interpretation of data for design purposes in:
architectural and building plans
developer plans
manufacturer data
documents, which may include:
applications
brochures
forms
policies
other reports as available.

Performance requirements may include:
flow, velocity, pressure and discharge requirements established using relevant Australian standards, codes and local government authority plans
noise rating of habitable areas.

Noise generation must include:
acoustic performance of fixtures, fittings and equipment
high velocity
high pressure
linking of building compartments by pipework
loose pipework
pumped hydraulic systems
system design
quick action valves
water hammer.

Layout of pipework systems:
must include:
concealed pipework
pipe enclosures
exposed pipework
fire-rated pipework
should have principles of economy, serviceability, durability and fit for use applied
should not unduly affect building integrity and aesthetic appeal.

System calculations must include:
sound criteria for habitable rooms
noise insulation characteristics of materials
sound transmission values of plumbing pipework and building materials.

Pumped hydraulic systems may include:
circulating systems
compressed air systems
pressurised water mains
pump and pump rising mains
pumproom
sanitary rising mains
steam systems.

Pipe supports cover fixings that do not impinge on sound attenuation of the hydraulic service, and may include:
anchors
bracket spacing
hanging brackets
manufacturer-recommended specific fixings
material requirements
provision for expansion
separation and insulation between pipework, supports and building structure.

Materials may include:
expanded foam rubber
glasswool
rockwool
lead vinyl
other approved materials.

Installation requirements:
may be for:
sanitary plumbing
drinking and non-drinking water supply
alternative water supply
stormwater drainage
siphonic stormwater systems
pumping systems
must include:
fire rating
level of workmanship
manufacturer installation requirements
pipe support
serviceability and access.

Material combinations may include:
pipe enclosures
floor, wall and ceiling systems
separation and insulation distances.

Sustainability principles and concepts:
cover the current and future social, economic and environmental use of resources
may include:
efficient use of material
efficient energy usage/capital outlay comparison
consideration of the Green Building Council of Australia rating scheme
selecting appropriate components to ensure minimal environmental impact.

Plans:
may include:
axonometrics
cross-sections
details
elevations
isometrics
sections
schematics, which may be produced using:
computer generation
drawing equipment.

Specification may include:
jointing
manufacturer requirements
materials
performance criteria
safety (WHS)
selection of suitable acoustic rated fixtures, fittings and equipment
separation and insulation between pipework, supports and building structure
support
workmanship.

Testing may include:
compliance testing
quality assurance (QA) audit
performance
sound measurement (dB).

Commissioning schedule must include:
system certification
insulation gap filling
system defects
system functions as per design.

Operation and maintenance manual may include:
as installed drawings
results of commissioning test
certification documentation
maintenance schedules
manufacturer brochures and technical information.

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, range statement and the Assessment Guidelines for the Training Package.
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.

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 as a minimum, provide evidence of the ability to:
design and document the details for sound-attenuated hydraulic services installation, including a specification for a high-rise mixed development building; using an approved sanitary plumbing and domestic drinking water system to a minimum of 29 floors.
evaluate and document design parameters, to relevant Australian standard and codes, and regulatory, client and manufacturer requirements for a range of sound-attenuated hydraulic services
components must include:
clipping
pipe enclosures
insulation
sound-attenuated pipework
prepare reports on sound-attenuated hydraulic services for a range of applications
prepare specifications for a range of sound-attenuated hydraulic services
prepare testing and commissioning schedules
apply sustainability principles and concepts throughout the design process
communicate 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 minimum 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 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.