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.
Design specification may include:
air controls
combustion air blowers
flame safe guards
gas pressure regulation
gas valve trains
manual shut-off valves
markings and instructions
materials
over-pressure protection systems
process controls
safety shut-off valve systems.

Type B gas appliances:
include those above 10 megajoules (MJ) for which a certification scheme does not exist
may use:
combination fuels
liquefied petroleum gas
natural gas
tempered liquefied petroleum gas
may have special requirements for design and operation, including:
after burners - process
air gas mixing machines and mixing blowers
atmosphere generators and special atmospheres
direct gas fired air heaters
high input gas fired appliances
incinerators and generators
multi-fuel firing systems
ovens - direct fired
smoke ovens - direct fired
stationary gas engines and turbines
steam and heated water boilers
water heaters
Type B appliance operation specifications will include:
flame establishment periods
interlocks
operation of gas appliance and burners
operational sequences
start gas rates
planning installation of a Type B gas appliance will include determination of site suitability and confirmation of the appropriateness of:
electrical supply
gas supply and sizing
proposed appliance security and lighting measures
proposed component handling and positioning measures
proposed foundation and supports
commissioning procedure for a Type B appliance, including:
preliminary inspection
activation run without fuel
activation run with fuel
operation and completion stages.

Regulatory and code of practice requirements include:
statutory and regulatory authorities’ requirements that may include:
statutory plumbing authority
statutory gasfitting authority
state or territory and local statutory regulatory authority and legislative requirements, particularly those pertaining to:
building codes
WHS and environmental requirements
plumbing and/or gasfitting authority regulations
environmental regulatory requirements may include:
air pollution
clean-up protection
waste management
relevant Australian standards, including:
AS3814 Industrial fuel fired appliances
AS2593 Boilers - Unattended and limited attendance
AS/NZS3000 Electrical installations
AS/NZS4836 Safe working on low-voltage electrical installations
AS5601 (AG601) Gas installations/AS/NZS5601
AS3814 (AG501) Industrial and commercial gas appliances.

Work health and safety is to be according to commonwealth, state and territory legislation and regulations and may include:
handling of materials, including hazardous materials and substances
hazard control
personal protective clothing and equipment prescribed under legislation, regulations and workplace policies and practices
safe operating procedures, including recognising and preventing hazards associated with:
electrical components and safety
gas fires and explosions
service lines
surrounding structures and facilities
trip hazards
use of tools and equipment
work site visitors and the public
working at heights
working in proximity to others
use of firefighting equipment
use of first aid equipment
workplace environment and safety.

Tools and equipment may include:
hand tools, such as wrenches and spanners
measuring equipment
power tools
testing equipment and instruments, including:
manometer
multi-meter
dual probe voltage tester
flue gas analysis equipment
hand pump pressure kit
Pitot tube
insulation resistance tester
megohmmeter
power point tester
neon tester
volt stick
lifting and load shifting equipment, including:
hand trolleys
rollers
forklifts
chain blocks
hoists and jacks.

Quality assurance requirements may include:
Australian Gas Association (AGA) requirements
Environment Protection Authority
internal company quality assurance policy and risk management strategy
International Standards Organisation
site safety plan
workplace operations and procedures.

Sustainability principles and concepts:
cover the current and future social, economic and environmental use of resources
may include:
efficient energy use
efficient use and recycling of material
correct handling of hazardous materials
disposing waste material to ensure minimal environmental impact
selecting appropriate components to ensure minimal environmental impact.

Valve trains include:
flow and ratio controls
gas pressure regulators and controllers
manual isolation valves
safety shut-offs.

Burners include:
atmospheric
nozzle
oxygen enhanced
packed power
pre-mix.

Testing and servicing of Type B gas appliances will require:
use of a hand-held programmer to monitor circuit conditions and to edit program (to make minor changes)
materials that comply with appropriate standards for the maintenance of Type B gas appliances.

Operational parameters of individual components include:
air flows
all safety and operating controls
combustion conditions
gas rates
purge times.

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.
It may be assessed on its own or as part of an integrated assessment activity involving planning and conducting the installation of at least one significant Type B gas appliance.

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:
locating interpreting and applying relevant information, standards and specifications to determine requirements of and maintain Type B appliances
applying safety requirements throughout the work sequence, including:
using personal protective clothing and equipment
isolating appliances from gas and electrical services
planning and conducting installation of at least one significant Type B appliance, which includes:
application of sustainability principles and concepts
obtaining required authorities
planning work
installing gas, ventilation and electrical componentry
installing electrical control system
completing all required tests and sequences
commissioning the appliance
completing all required documentation
communicating and working effectively and safely with others.

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.