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.
Client requirements may include:
architectural specifications
builders' specifications
owner requirements
specialist use applications.

Cost-benefit analysis:
compares the range of suitable treatment and disposal options, materials, system choices, disinfection options, water savings and environmental benefits compared to initial and ongoing maintenance costs.

Statutory, regulatory and Australian and New Zealand standard requirements include:
Acts
Australian and New Zealand standard requirements
industry standards
local and state government policies, including group and strata titling
National Construction Code
regulations.

Manufacturer requirements may include:
material specifications
sizing tables
technical and trade manuals.

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

Performance requirements may include:
Australian and New Zealand standards
local authority plans
operational pressures and compressed air consumption
pressure and air quality.

Layout of pipework systems may include:
building integrity and aesthetic appeal should not be unduly effected by pipework
principles of economy, serviceability, durability and fit for use should be applied.

Fittings and valves may include:
bends
couplings
isolating valves
pressure relief valves
tees
unions.

System calculations may include:
air consumption
compressed air volume and storage
distribution pressures
energy
interpretation of design charts and tables
pipe sizing.

Equipment and components may include:
air filtering equipment, including proprietary filtering systems and air scrubbing systems
capacity and size
compressed air appliances, including air-operated tools, machinery and equipment
moisture removal methods
mounting and installation requirements
oiling equipment
reciprocating compressors
single and multi-stage compressors
valves, pressure controls and components.

Materials may include:
approved pressure-rated materials
copper
steel.

Jointing methods may include:
brazing
mechanical joints
threading.

Installation requirements may include:
clipping
installation details
jointing requirements
level of workmanship.

Sustainability principles and concepts:
cover the current and future social, economic and environmental use of resources
may include:
using efficient design principles throughout
incorporating efficient use of material in the design
design that ensures minimal environmental impact
choice of appropriate components and equipment.

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

Specification may include:
appliances
clipping
detailing of specialised components
jointing
manufacturer requirements
materials
valves
workmanship.

Testing may include:
flow testing
inspection checklist
leak testing
pressure testing
quality assurance (QA) audit.

Commissioning schedule may include:
check fit for purpose
check for burrs and obstructions
commission appliances
purge system
remove contaminants.

Operation and maintenance manual may include:
check for blockages
leak detection
regular inspections
regular maintenance requirements.

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, provided that simulated or project-based assessment techniques fully replicate construction 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 provide evidence of the ability to:
apply sustainability principles and concepts associated with the design
identify electrical hazards associated with the design
evaluate and document design parameters including client, regulatory, manufacturer and Australian and New Zealand standard requirements for a range of compressed air systems
produce appropriate layouts for compressed air systems according to manufacturers' and regulatory requirements
calculate pipe sizes according to regulations and manufacturers' requirements
design and size a compressed air system using appropriate software
prepare plans for a range of compressed air systems to industry standards
prepare a specification for a compressed air system
prepare a testing and commissioning schedule
prepare an operation and maintenance manual.

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 work 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.