© commonwealth of australia 2015 1 -...

CPCPGS3046A - INSTALL LPG SYSTEMS IN CARAVANS, MOBILE HOMES AND MOBILE WORKPLACES

© Commonwealth of Australia 2015 1



ACKNOWLEDGEMENTS

National Plumbing Services Training Advisory Group

Plumbing Industry Commission Victoria

© Commonwealth of Australia 2015

Construction and Property Services Industry Skills Council PO Box 151 Belconnen ACT 2616 Tel: 02 6253 0002 www.cpsisc.com.au This work is copyright, but permission is given to trainers and teachers to make copies and contextualise the resources for use within their own training organisation or in a workplace where training is being conducted. This permission does not extend to making copies for use outside the immediate training environment for which they are made, or the making of copies for hire or resale to third parties.

This work was first published in 2004 with the assistance of funding provided by the Commonwealth Government through the Australian National Training Authority (ANTA). The 2015 publication has been updated to reflect changes to the national units of competency.

The views expressed in this work do not necessarily represent the views of the Commonwealth of Australia or CPSISC. In addition, the Commonwealth of Australia and CPSISC do not give warranty or accept any legal liability in relation to the content of this work.

The website addresses and other contact information provided in this publication were compiled in good faith and were correct at the time of printing. The updating of these resources was completed by:

National Plumbing and Services Training Advisory Group, with funding and support provided by the Construction and Property Services Industry Skills Council (CPSISC):

This guide was developed in consultation with representatives of the Plumbing Industry by NPSTAG and CPSISC to support the implementation of the CPC08 Construction, Plumbing and Services Training Package.



Contents to be altered to suit.

What is this resource about? ............................................................................................. 1

How do I use this resource? .............................................................................................. 1

Flexible Delivery .............................................................................................................. 1

What do I have to do? ....................................................................................................... 1

Unit Descriptor ................................................................................................................. 2

Element ............................................................................................................................. 2

Performance Criteria ......................................................................................................... 2

How will I be assessed? .................................................................................................... 4

Are there any pre-requisites? ............................................................................................ 4

What other resources will I need? .................................................................................... 4

Texts ................................................................................................................................. 4

Safety ................................................................................................................................ 5

Workplace environment and safety .................................................................................. 5

Introduction ...................................................................................................................... 6

Properties of LPG ............................................................................................................. 7

Ignition and combustion principles .................................................................................. 9

Gas combustion .............................................................................................................. 10

Complete combustion ..................................................................................................... 10

Incomplete combustion ................................................................................................... 10

Chilling a gas flame ........................................................................................................ 11

Safety .............................................................................................................................. 11

Electrical safety .............................................................................................................. 12

Regulations ..................................................................................................................... 12

Quality assurance ............................................................................................................ 13

Planning .......................................................................................................................... 14

Other considerations ....................................................................................................... 14

Personal protective equipment ........................................................................................ 15



Choosing the right tools .................................................................................................. 15

Determining LP gas system requirements ...................................................................... 16

Determine the gas load .................................................................................................... 17

Calculate the storage capacity ......................................................................................... 17

Calculate the regulator size and any connections ........................................................... 19

Conversions..................................................................................................................... 20

Pigtail connections .......................................................................................................... 20

AS/NZS5601 Details requirements for caravans and catering vehicles ......................... 21

Checking the location and set out ................................................................................... 21

Cylinder requirements ..................................................................................................... 21

Cylinder installation ........................................................................................................ 21

Location of a cylinder ..................................................................................................... 21

Cylinder in a compartment .............................................................................................. 23

Cylinder regulator ........................................................................................................... 24

Consumer piping ............................................................................................................. 25

Restriction on pipe joints ................................................................................................ 26

Restriction on hose assemblies used as consumer piping ............................................... 26

Consumer instruction labels and plates ........................................................................... 26

Appliance installation ..................................................................................................... 26

General ............................................................................................................................ 26

Prohibited appliances ...................................................................................................... 27

Required clearance between appliance and fuel filler cap vent or vent .......................... 27

Water Heaters.................................................................................................................. 29

Flued appliances.............................................................................................................. 30

Air supply to appliances .................................................................................................. 30

Worksheet ....................................................................................................................... 32

Practical application ........................................................................................................ 37

Assessment checklist ...................................................................................................... 38



What is this resource about?

Welcome to CPCPGS3046A – Install LPG systems in caravans, mobile homes, and mobile workplaces.

This resource will help you gain the skills and knowledge necessary to demonstrate competence in this

unit.

How do I use this resource?

This resource is divided into four main sections:

• A learning unit, which contains background information on CPCPGS3046A – Install LPG

systems in caravans, mobile homes, and mobile workplaces

• Worksheets, which prepare you for the practical application

• Practical application, which allows you to experience installing LP gas systems in caravans,

mobile homes, and mobile workplaces

• Assessment materials, which help you demonstrate competency.

To complete this unit of competence you will need to:

• read the information contained in the learning unit

• complete the worksheets as instructed

• have your answers checked by your trainer or supervisor

• work with your trainer or supervisor to practice installing LP gas systems in caravans, mobile

homes, and mobile workplaces

• read the assessment checklist together with the assessment sheets

• complete the assessment.

Learning Resources are not intended to be the only source of information nor are they intended to be an

exhaustive form of instruction.

Flexible Delivery

The Trainer or Supervisor may adapt and deliver this Learning Resource to suit people from diverse

backgrounds to meet equity principles and conform to Legislative policies.

What do I have to do?

To demonstrate competence in this unit you will be required to show the required level of skills and

knowledge for each of the elements involved in CPCPGS3046A – Install LPG systems in caravans,

mobile homes, and mobile workplaces:

• Plan work activities

• Determine LP gas system requirements

• Install system

• Test and commission system

• Clean up.

If you are unsure of the meaning of these elements you should read the performance criteria on the

following page.



CPCPGS3046A Install LPG systems in caravans, mobile homes, and mobile workplaces

Unit Descriptor This unit of competency specifies the outcomes required to

determine the requirements for installing and commissioning

liquefied petroleum gas (LPG) systems with an operating pressure

not exceeding 2.75kPa in caravans, mobile homes and mobile

workplaces

Element Performance Criteria Elements define the

essential outcomes of a

unit of competency.

Performance criteria describe the performance needed to

demonstrate achievement of the element. Where bold

italicised text is used, further information is detailed in the

required skills and knowledge section and the range

statement. Assessment of performance is to be consistent

with the evidence guide

1 Identify LPG system

requirements.

1.1 Plans, specifications and any special instructions are obtained.

1.2 Work health and safety (WHS) and environmental

requirements associated with installing and commissioning

LPG systems in caravans, mobile homes and mobile

workplaces are adhered to throughout the work.

1.3 Quality assurance requirements for company operations are

identified and adhered to.

1.4 Gas load and design requirements are determined from plans,

specifications, and job drawing or workplace instructions.

1.5 System capacity is calculated to ensure adequacy for the

required load and compliance with relevant Australian

standards and installation requirements.

1.6 Appropriate regulator and piping are identified in terms of

size, connection sizes and capacity, according to relevant

Australian standards and installation requirements.

1.7 Location of cylinders, appliances and piping set out is

identified according to job requirements and in compliance

with relevant Australian standards and installation

requirements.

1.8 Quantity of piping, components and fittings is estimated in

compliance with relevant Australian standards and

installation requirements.



2 Prepare for

installation.

2.1 Materials, equipment, appliances and cylinders are ordered

and checked for compliance with docket and order form, and

for acceptable condition.

2.2 Appropriate tools and equipment for installing and

commissioning LPG systems in caravans, mobile homes and

mobile workplaces, including personal protective equipment,

are identified and selected.

2.3 Work is planned in conjunction with others involved in or

affected by the work.

2.4 Work area and materials are prepared to support efficient

installation of the system.

2.5 Sustainability principles and concepts are observed when

preparing for and undertaking work process.

3 Install LPG system,

including flue and

ventilation.

3.1 Cylinders, regulators, associated pipework, appliances and

fixings are installed in compliance with manufacturer

requirements, relevant Australian standards and installation

requirements.

3.2 Ventilation requirements are determined and installed

according to relevant Australian standards.

4 Test and

commission LPG

system.

4.1 Appropriate test equipment is selected.

4.2 System is tested according to relevant Australian standards

and manufacturer requirements.

4.3 System is commissioned according to relevant Australian

standards and manufacturer requirements.

4.4 Test data is recorded in format required by regulatory and

installation requirements.

4.5 Compliance plates and signage are located and fitted

according to statutory and regulatory authorities’

requirements, relevant Australian standards and installation

requirements.

5 Clean up. 5.1 Work area is cleared and materials disposed of, reused or

recycled according to legislation, regulations, codes of

practice and job specification.

5.2 Tools and equipment are cleaned, checked, maintained and

stored according to manufacturer recommendations and



workplace procedures.

5.3 Information is accessed and documentation completed

according to statutory requirements.

Required knowledge

• electrical safety and requisite precautions

• how to access relevant information, including codes and technical standards

• job safety analysis (JSA) and safe work method statements (SWMS)

• process for determining material requirements

• procedures for installing and commissioning gas systems in caravans, mobile homes and mobile

workplaces

• properties of gas, gas safety, combustion principles, gas pressures, and cylinder installation and

ventilation requirements

• relevant statutory requirements related to installing LPG systems

• SI system of measurements

• workplace and equipment safety requirements

An up to date version of the ‘Unit Descriptor’ may be located on the Australian Government web site

training.gov.au

http://training.gov.au/Search/Training?searchTitleOrCode=&nrtSearchSubmit=Search&includeSupers

ededData=true&includeSupersededData=false&homePage=true&javaScriptEnabled=true&typeAllTra

iningComponents=true

How will I be assessed?

Your trainer or supervisor will decide with you how you will be assessed. Your assessment activity may

include completion of the student worksheet and practical task selected by your trainer or supervisor.

Your assessment should allow you to demonstrate all the skills and knowledge required to install LP

gas systems in caravans, mobile homes, and mobile workplaces.

This unit may be assessed in conjunction with other units of competence. Your trainer or supervisor

will tell you if you are to be assessed this way.

Are there any pre-requisites?

Prior to commencing CPCPGS3046A – Install LPG systems in caravans, mobile homes, and mobile

workplaces you must have successfully completed the following pre-requisite:

• CPCPCM2043A – Carry out WHS requirements

What other resources will I need?

To assist you the following resources have been suggested and should be available to you to do this

competency:

Texts

• AS/NZS 5601 part 1 and 2 Gas Installations (relevant version)

• AS/NZS1596 – 2000 Storage and handling of LP gas

• State or Territory regulations may override this learning guide.



Safety

Workplace health and safety (WHS) requirements need to be observed in accordance with legislation.

You need to know the WHS laws governing your job. Revision of CPCPCM2043A – Carry out WHS

requirements, before commencing this unit is advisable.

In any work situation you can reduce the risk of injury to yourself and others by using appropriate

personal protective equipment (PPE). The types of PPE that you may require:

• overalls – used for the protection of the installer when working in different conditions

• boots – it is recommended that soft soled footwear is worn while working on roofs, as deep

grooved footwear pick up small stones and debris that might damage or scratch the roof sheets

• safety glasses or goggles to protect the eyes from injury when cutting the sheets with a power

saw

• ear plugs or muffs to protect the installer’s hearing from excessive noise

• dust masks or respirators to protect the user from breathing in dust or fine particles when

cutting the sheets with a power saw

• gloves, for the protection of the installer’s hands when working with different types of pipes,

tools and equipment.

Workplace environment and safety

Handling of materials Manual lifting and handling techniques must always be followed

according to WHS requirements. You should move materials into

position by hand where possible. Excessive manual handling should be

avoided and cranes and other mechanical lifting devices should be

employed when necessary.



Introduction

The aim of this unit is to teach you to design, install and test LPG in caravans, mobile homes, and

mobile workplaces.

States or Territories gas Authorities apply different certification schemes when the installation is

completed. It is therefore of the utmost importance that you have made the installation in a safe,

tradesman–like manner to ensure the safety of the consumer. The principles learnt here may be applied

to new or existing vehicles and marine craft. They are also relevant for any appliance replacement or

servicing that may be carried out in existing caravans.

A definition of a caravan is found in (relevant version) (AS/NZS 5601):

‘a structure that is or was designed or adapted to move from one place to another, whether it is towed,

transported or self-propelled, and which is intended for human habitation or use as a workplace. This

includes camper vans, mobile homes, on-site vans, and commercial food vans. It does not include

fabricated transportable homes or demountable classrooms, etc’.

A typical basic installation in a caravan, mobile homes, and mobile workplace would be a cooker and

refrigerator which are supplied by one 9 kg gas cylinder. Occasionally a room heater and/or hot water

service may also be installed.

The installation you will be doing is for a caravan, mobile homes, or mobile workplace so these training

notes will be written about these types of installation.

Before you can plan and install LP gas cylinders in caravans, mobile homes, and mobile workplaces,

there are a number of issues that you must know about. These include:

• the properties of LP gas

• ignition and combustion principles

• pressure and flow rates

• gas safety

• electrical safety.



Note

There are two main types of LP gas: Propane and Butane. Because

of our climatic conditions, we use Propane for fuel gas.

Automotive LP gas is a mixture of Butane and Propane and is not

suitable for use with gas appliances.

Butane is also found in disposable gas canisters which can be

recognised by the rubber valve in the top of the canister. A needle

valve similar to the one used for inflating footballs, etc with a pump

is inserted through the rubber valve to obtain gas.

All references to LP gas from this point on refer to Propane.

Properties of LPG

• LP gas is colourless and heavier than air. It will flow downwards and collect on the ground

unless there is ventilation or air movement.

• A strong pungent odorant (Ethyl mercaptan) is added to assist in the detection of even minor

leaks.

• LP gas is non-toxic, but if inhaled in sufficient volume, asphyxiation may occur.

• If a given volume containing between 2-9.6% of LP gas in an air-mix is ignited, it will flash

and, if in a confined space, it will explode.

• LP gas is stored under pressure to maintain its liquid state. When the pressure is released, it

vaporises and in the process expands to 270 times its liquid volume. 1 litre = 0.270 m3 of gas

vapour.

• The travel of flame in LPG vapours in open air is about five metres/second

• Ambient temperature increases the vapour pressure of LPG inside containers and also causes

the LPG liquid to increase in volume. LPG cylinders and tanks are so designed that they

should never be filled with liquid to more than 83% of their total capacity.

• LP gas will cause deterioration of natural rubber. Therefore only approved jointing

compounds, lubricants and synthetic hoses must be used.

• The ignition temperature of Propane is between 493-5490 C.



The average properties of Commercial LP gas (propane) at 150C

Formula C3H8

Specific Gravity of liquid (water = 1) 0.51

Specific Gravity of gas (Air = 1) 1.53

Boiling Point of liquid (vaporisation) at atmospheric pressure 0C – 420C

Kilograms per litre liquid 0.508

Litres per kilogram liquid 1.97

Cubic metres gas per kilogram liquid (101.325 kPa) 0.528

Cubic metres gas per litre liquid (101.325 kPa) 0.268

Flammability Limits (% gas in air)

Lower 2.4

Upper 9.6

Latent heat of vaporisation at Boiling Point (m3/kg) 0.536

Air required for combustion (volume/volume)

Stoichiometric 23.8

With 40% excess air 33.3



Heating Values (megaJoules)

mJ/m3 (gas at 150C, 101.32b kPa) 96

mJ/litre (gas at 150C, 101.325 kPa) 0.0955

mJ/litre (liquid at 150C) 25.6

mJ/kg 50.01

Vapour Pressure (kiloPascals)

ºC kPa absolute kPa gauge

-15 295 195

0 480 380

20 850 750

40 1395 1295

55 1915 1815

Ignition and combustion principles

Combustion is a rapid chemical reaction between a fuel and oxygen, which gives off heat. Usually the

oxygen comes from the air, which is about 21% oxygen and 78% nitrogen.

Most fuels contain carbon and hydrogen and when combined with elements like oxygen, heat is given

off. In gas, carbon and hydrogen usually don’t appear as pure elements. Instead they are combined into

chemical compounds called hydrocarbons.

When hydrocarbons are burned, the heat of combustion breaks them down and they begin to react with

the oxygen, forming a new group of compounds called aldehydes. These in turn break down and react

with the rest of the oxygen producing carbon dioxide and water vapour.



Nitrogen, being an inert gas, passes through the combustion reaction unchanged.

The heated gases, carbon dioxide, nitrogen and water vapour are called the products of combustion or

flue gases.

Once the gas or air mix is heated to the required temperature for ignition – between 4930 C and 5490 C

for propane – the resultant chemical reaction is generally sufficient to maintain further combustion.

Combustion or burning of gas (or any other fuel) can only occur when three factors are united. They are

the fuel, oxygen and ignition. Combining them together forms a combustion triangle.

The combustion triangle

Should one of the factors be omitted, combustion cannot take place.

Gas combustion

Gas combustion is generally described as:

• complete

• incomplete.

Complete combustion

Complete combustion is the total breakdown of the fuel into carbon dioxide, nitrogen and water vapour.

This is discussed in the previous section.

Complete combustion occurs when the correct volume of oxygen (obtained from the surrounding air) is

supplied for each volume of gas to be burnt.

The ratio is 24 parts air to 1 part gas (propane). We call this the ideal fuel/air ratio or stoichiometric

ratio.

Complete combustion ensures:

• maximum appliance efficiency

• safe products of combustion produced and released into the atmosphere.

The air to gas ratio to a burner is maintained by ensuring sufficient:

• primary air is available to the mixing tube of the burner, to mix with the gas prior to ignition

• secondary air is supplied to the burner head to maintain efficient combustion.

Incomplete combustion

When incomplete combustion occurs, other by products are produced, including the poisonous gas

carbon monoxide. There are two main causes of incomplete combustion:

• lack of oxygen

• chilling a gas flame.

Lack of oxygen is caused by:

• insufficient primary air

− being inspirated into the burners mixing tube by the gas stream

Note

Stoichiometric ratio means chemical

equation of combustion.



• insufficient secondary air

− being supplied to the combustion area

• blocked or poorly designed flue

− helps prevent removal of products of combustion from the appliance.

Chilling a gas flame

Impingement of any solid object into the inner cone of the gas flame will cool some of the fuel below

its ignition temperature, thus preventing complete combustion from taking place.

All of the above contribute to the following main products of incomplete combustion.

• Carbon monoxide (CO).

• Water vapour (H2O).

• Deposit of soot (C)

• Loss of heat energy (mJ)

As a gas installer, you can ensure that incomplete combustion is avoided by checking the following.

• Appliance is assembled and installed correctly.

• Correct ventilation requirements are installed.

• Correct pressure regulator is installed for type of installation.

• All appliances have been adjusted to correct operating pressure.

• All burners have been checked and adjusted for correct aeration.

• Correct flue sizing and components have been used where applicable.

Because caravans, mobile homes, and mobile workplaces are essentially ‘confined spaces’, you must

take the utmost care when installing gas equipment to ensure that you have, completed all the correct

installation procedures, and so prevent an accident from occurring.

You should also clearly instruct the consumer to have regular maintenance carried out on their

appliances.

Safety

An extremely important aspect of working with LP gas systems is your own personal safety, as well as

the safety of your fellow workers.

Note

There are two grades of LP gas stored at service stations. One is for

automotive use only and could be a Propane/Butane mix, which is

dispensed through a driveway pump into the vehicle fuel container.

The other is Propane, which is decanted into portable cylinders for

barbeques and caravans.

These grades are not interchangeable and a dangerous situation could

develop if the auto gas is used for domestic or leisure appliances.

Products of incomplete combustion such as carbon monoxide may

cause serious or even fatal injuries.



Liquefied Petroleum Gas (LPG) is flammable and when it burns it releases a considerable amount of

heat. This property, in conjunction with its portability, makes LPG an ideal fuel for domestic,

commercial, industrial and recreational use. However, LPG introduces fire hazards over and above

those of similar fuels and special care must be taken to keep it safe.

Efforts to prevent LPG fires are directed mainly at preventing gas escaping from the specially designed

storage cylinders. Where sound engineering, careful processes and vigilance is maintained, the hazards

of LPG can be controlled, making it safe for general use.

LPG is unique among the hydrocarbons because of the combination of volatility, vapour density and

flammability. When released to the atmosphere, LPG vaporises readily. The gas is heavier than air and

will drop to the lowest point and spread as readily as water. It will displace the warmer, lighter air

above it. It can move against a light wind.

LPG will run downhill and along depressions. It will diffuse into the air to form a flammable mixture. It

can travel a long way to reach an ignition point, and then flash back to the source of the leak. One case

record reports a flashback of 600 metres.

Keep this in mind should you ever have to cut in or extend an existing pipe. It must always be

disconnected at both ends and be purged with an inert gas. Refer to (relevant version) AS/NZS5601.

A second characteristic of LP gas which makes it hazardous is that it is stored as a liquid under

pressure. Loss of containment, eg a broken line or a damaged cylinder, will emit liquid under

pressure, not liquid under gravity, as with petrol, or gas under pressure, as with methane.

Therefore the amount of LP gas released from a break in a pipe will be much more than for either the

lighter or heavier hydrocarbons. Further, it can be emitted as a boiling liquid comprising both spray and

gas.

The old saying ‘don’t use a naked flame’ to test for leaks is very true, especially when you consider the

low flammability limits and other properties listed earlier. Don’t forget that you are working in a

confined space, so smaller quantities apply!

Always use soapy water or an electronic detector to locate leaks.

Other safety issues to consider are:

• cylinder location and housing

• pipe protection

• appliance location and ventilation

• appliance clearance to combustible materials

• clearance between appliance air intake/ flue outlet and the fuel filler cap.

Electrical safety

The appliances that you will be installing may or may not have electrical connections. Remember that

unless these connections plug in, they must be made by a qualified electrician.

AS/NZS5601 (relevant version), states that no electrical equipment other than a non-sparking shut-off

device may be contained in a cylinder compartment.

If you are using electric power tools during the installation, be aware that extension leads can get

snagged on metal chassis and bulkhead parts and could make the whole structure live if they become

partially or fully severed. To avoid danger use a safety switch or board with power tools.

Regulations

When installing gas cylinders you must observe the regulatory as well as any State or Territory WHS

requirements. You will require a copy of Australian Standards (relevant version) AS/NZS5601 and

AS/NZS1596 which govern the installation and operation of LP gas cylinders.

You will also require a copy of your state’s gas regulations.



Note

You should carefully read part 2 of (relevant version)

AS/NZS5601which refers to LP Gas installations.

While many of the sub clauses in each are similar, there are some differences.

The main topics covered are:

• cylinder installation

• cylinder regulator

• consumer piping

• appliance installation

• air supply to appliances

• consumer instruction plates.

Quality assurance

Most companies these days have a policy for assuring quality to the customer. This policy is designed

to control the processes used within the company, record keeping, the quality of materials used and the

way the work is done.

You need to be aware of your company’s particular quality assurance requirements. A number of

quality assurance issues are dealt with in the next section ‘planning the job’.



Planning

Before you begin the designing, installation and testing of LP gas systems in caravans, mobile homes,

and mobile workplaces you need to gather together information from a number of sources. The table

below shows some of the information sources you will use and the type of information each source can

provide you with:

Source of information The information you can get

Authorities Regulatory requirements, Local requirements,

Approval for ‘special’ installations. Vaporisation

rates of cylinders. Pipe sizing formulas.

Plans or specification Location, design and capacity of the system

Design drawing Gas load or design requirements

Regulatory requirements Work notices

Manufacturers’ specifications mJ rating of appliance, installation details such as

position of inlet pipe, dimensions, fixing details.

Site Inspection Better perspective of structure in relation to pipe

work and appliance installation. Meet other

tradesmen on site to discuss how job will proceed.

Manufacturers’ operating

instructions

Operating, commissioning and maintenance

procedures.

Gas Installation Code

AS/NZS5601 (relevant version)

Installation & testing recommendations.

Your State’s Gas Regulations Specific details regarding installation completion

notices, etc in your state.

You should always read the job specification in conjunction with the plan. There is often more detail in

the specification that you may need to know about eg specific make or size of valves or other

components, who is fitting in the appliance to the cupboards or structure, etc.

Some State Regulations call for a specific completion notice to be given to the owner. You will need to

check with your trainer or supervisor to see if this is case in your home state.

Your regulator may require a compliance plate to be attached to the caravan or marine vessel. Check

with your instructor.

Other considerations

You need to consider how the task you are about to do affects others. You should plan the task with the

others involved or affected by the work. Your company may have procedures regarding this and what

will need to be taken into account.

Some aspects of the job that you need to consider are listed below.

• Fitting your pipework to the chassis of the caravan. Brake lines and electrical cables also get

fixed to the chassis. Check out to see if they will be in the way.



• Manual shut off valves must be accessible and adjacent to the appliance. Is the location you

wish to install it going to be in the way of another piece of equipment?

• There is a lot of movement with both caravans, mobile homes, and mobile workplaces.

Therefore the appliances have to be fastened to the structure. Otherwise they tend to fall over.

You will have to liaise with the tradesmen to ensure that they are fitting suitable materials for

the appliance to be fastened to.

• Buses are often used for mobile homes and usually have low level steps recessed into the

floor. This is where your low level ventilation has to be fitted, unless a vent can be fitted to the

bottom of the door. What is under the floor behind the steps? How will you prevent road dust

entering the vehicle?

Personal protective equipment

During the planning stage you will need to select and use various PPE to protect yourself including:

• dust mask or respiratory equipment. When working on fibreglass. Also required when

tradespersons other than yourself are cutting or drilling near you

• earmuffs or plugs. When yourself or others are using grinders

• safety glasses or goggles for any drilling, cutting or grinding operations

• knee pads or a kneeling pad when working underneath the caravan – beats kneeling on a

screw!

• a 240v electrical safety switch connected to any power tools

• welding shield appropriate for any mig, tig or arc welding operations such as pipe support

bracket fabrication

• protective clothing for above welding operations

• steel toe cap safety boots or shoes.

Choosing the right tools

To complete the planning stage you will need to identify a range of hand and power tools and

equipment that you might use. These may include:

• flaring tool for making joints in copper tube – generally 10 mm

• copper tube benders or spring

• copper tube cutters

• expanding tool for forming sockets in copper tube



• branch forming tool if fittings are to be formed in the pipe itself (not common practice for this

type of installation)

• oxy/acetylene or oxy/LPG set for brazing joints

• 100 mm angle grinder for cutting through steel step risers for vent openings

• range of drill bits suitable for timber and metal, sized to pipe grommet diameter

• small diameter hole saws in lieu of above for grommet holes and drain hole in cylinder

compartment

• large diameter hole saw for flue pipes that go through roof

• open end adjustable spanners to suit hex fittings – two of each size to ‘hold against yourself’

when tightening nut onto fitting

• pop rivet pliers

• cordless drill

• Phillips head and or hex head bits to suit above

• 240v drill with chuck large enough for hole saw shanks

• suitable length extension lead

• safety cut out switch for 240 v power – can save your life in the event of severing an electric

lead or if pools of water are present

• tin snips – left and right hand for cutting through cladding on vans for vent and flue openings

• calking gun for sealing around vents, flashings, etc

• 15 kPa digital manometer for leak testing ‘rough in’ pipe work

• manometer for checking and adjusting regulator for operating and lock up pressures

• suitable testing tee to attach manometer to pipe work for leak test

• thermometer for checking or adjusting oven thermostat and hot water temperature

• various types of welding plant as required

• hand trolley or dolly for moving appliances and gas cylinders.

Determining LP gas system requirements

Before you can design, plan and install an LP gas system in a caravan, mobile homes, and mobile

workplaces you must be able to understand and state the requirements of the system. You will need to

be able to consider the following:

• gas load

• storage capacity

• regulator size and connections

• pipe size

• vehicle type

• appliance type and installation requirements

• materials, cylinders and components

• tools and equipment.



Determine the gas load

The gas load requirements need to be determined from the design drawing or any other sources. For

example, you can determine gas load requirements by adding together the mJ/hr rating of each

appliance to be installed.

The total is called the gas load.

The rating of each appliance can be found in:

• job specification – appliance specs should be included

• design drawings

• manufacturers’ installation instructions

• appliance data plate.

Once you have determined the total load, you can use this figure to calculate storage capacity, regulator

capacity and pipe sizes.

Calculate the storage capacity

The term ‘caravan’ found in (relevant version) AS/NZS5601 can mean any type of vehicle from a

camper trailer to a large passenger bus converted to a mobile home or a handy van with a pie warmer to

a mobile kitchen with two pizza ovens!

However, the storage capacity of the LP gas cylinders for the installation you will be doing at

Registered Training Organisation (RTO) may be calculated using the following rule of thumb:

In a small to medium sized van it is normal to fit one 9 kg cylinder. If a hot water service (HWS) is

installed, two 9 kg cylinders may be fitted.

Example 1

How long will one 9kg cylinder of LP gas last if the appliances use 50 mJ/hr?

1 kg of propane liquid will produce approximately 50 mJ.

9 x 50 = 450 mJ

Appliances use 50 mJ/hr

450 mJ

50 mj = 9 hours

If, for example, the appliances are used for say half an hour per day, the cylinder will last for 18 days.

For 15 minutes per day usage, the cylinder will last 36 days approximately.

Because individual needs will be different, it is almost impossible to calculate exactly what people’s

requirements will be.

• Do they only stay in caravan parks or do they pull off the road and camp overnight?

• Are they ‘going bush’ for six weeks or longer?

• Do they cook a roast leg of lamb when they head off for the weekend?

There are a myriad questions like these and no real answers, but as said earlier, the rule of thumb

generally works out fine.

The storage capacity selected must be adequate for the load details given in the design instruction.



Example 2

Let’s consider a 32 seat passenger bus that is being converted to a mobile home.

The owners intend to drive it to a camping ground and stay for a week whenever they have holidays.

The owner proposes installing an upright cooker (35 mJ/hr), a refrigerator

(12 mJ/24hr), and a 14 litre storage hws (5 mJ/hr).

How much gas storage does he need?

Assume that only two hotplate burners are used on most days. Each burner is rated at 5.4 mJ/hr each

when full on. Total use for a day is one hour so 5.4 x 2 = 10.8 mJ used. (In reality the figure will be less

than this because when the contents of the pot or frying pan are hot, the burner is turned to simmer, but

we calculate using the full rate).

Once the fridge is turned on and gets cold it uses 12 mJ/day. Generally the refrigerator should be cold

to start with as it is normal to run it off the vehicle’s 12 volts electrical supply to maintain a low

temperature when travelling.

Usually the HWS is only used for washing dishes. Let’s assume that once it’s heated up (takes about 35

minutes), it will cycle say three times during the day for about 10 minutes. Let’s say 6 mJ/day.

Now total all the figures:

10.8 (for the cooker)

12.0 (for the refrigerator)

6.0 (for the HWS)

28.8 mJ/day

You would probably round this up to 30 mJ/day.

We know we have 450 mJ / 9 kg cylinder, so 450 divided by 30 = 15 day’s use (approx).

The only factor we haven’t looked at is – Can a 9 kg cylinder vaporize/supply this amount of gas?

You learned about this in CPCPGS3059A – Install LPG storage of aggregate storage capacity up to 500

litres.

Look at the table below which shows the vaporization rate of a cylinder in terms of the temperature of

the liquid and the percentage of the ‘wetted’ surface of the cylinder.

‘Wetted surface’ means that part of a cylinder in contact with the liquid gas inside.

I’ve used 30% full (wetted surface area) at – 70 C. as this gives a good rate at all but the coldest

temperatures.

Cylinder Diameter Height mJ Litres

4.5 kg 0.31 0.19 13.42 0.52

9 kg 0.31 0.33 23.32 0.91

15 kg 0.31 0.62 43.82 1.71

Reading across the row for a 9 kg cylinder we see that 23.32 mJ is the hourly vapor rate from one

cylinder.

This is for continuous use. As our situation is intermittent, ie not all appliances are being used at the one

time, there shouldn’t be any problems encountered.

Note

If we had a greater hourly load, (say 85 mJ/hr), then two cylinders

would need to be manifolded together to provide the required

vaporisation.



Calculate the regulator size and any connections

There are different types of regulators for different gases and different purposes:

• single stage is the only one permitted in accordance with (relevant version) AS/NZS5601:

When you go to your local supplier to select a regulator, you’ll need to know the total load of the job.

You will also be confronted with the fact that there are different makes, types and prices, automatic

changeover, manual changeover and singles and most important of all, different flow rates.

Prest-O-Lite (USA) regulator Single regulator

Manual changeover regulator Automatic regulator

Note

AS/NZS5601 (relevant version), requires that an OPP (over pressure

protection) type of regulator be fitted. Read the clause to find out

why.

Many small regulators do not have any adjustment, the outlet pressure is fixed. If you install one of

these types and cannot get the desired pressure at the appliances, you have either selected the wrong

regulator (capacity size) or will have to use an adjustable type in its place.

Basic installations either use a single regulator or a manual changeover regulator if two cylinders are to

be fitted.



Conversions

Depending on where the regulator was made – Asia, Europe or America, the information you require

may be in different units to those we use in our metric system. You will need to do some unit

conversions. The list below gives some examples.

Gas consumption rates

• 1 mJ = 948 BTU (British thermal units)

• 1 kW = 3.6 mJ

Working Pressures

• 1” WG = 0.250 kPa

Supply Pressures

• 1 PSI = 6.895 kPa

• 1 Bar = 100 kPa ∴1mB = 1 kPa

Volume Rate of flow

• 1 kg (liquid) = 1 litre = 0.27 m3 vapour = approx. 32 mJ/hr

Example

One popular regulator gives a flow rate of 4 kg/hr. How many mJ/hr is this?

Looking at the list above for volume flow rate, you will find that 1kg = approx. 32 mJ/hr.

Multiply 4 x 32 = 128 mJ/hr flow through the regulator.

Using the motor home example on the previous page where approx. 40 mJ/hr is used with everything

operating, then the regulator will be more than adequate.

Pigtail connections

The pigtail connection from the cylinder to the regulator can either be 6 mm copper or a flexible rubber

type with an integral excess flow valve incorporated in the POL fitting. (The abbreviation POL comes

from the trade name for Prest-O-Lite in USA).

Pigtails are available with different outlets:

• inverted flare

• m BSP

• c x MI union.

Rubber pigtail with m BSP thread

The inverted flare types are generally supplied with the regulator (manual or automatic changeover).

The ¼’ m BSP or ¼’ compression union types are used with single regulators (see diagram).



There are various regulator manufacturers produce ‘capacity’ charts for their regulators, and you would

need to consult these charts for any installation, including the minor one you will be installing.

AS/NZS5601 (relevant version) Details requirements for caravans and catering vehicles

Checking the location and set out

The selected location of the LP gas cylinders and regulators must comply with (relevant version)

AS/NZS5601 – Gas installations and AS/NZS1596 and allow access for filling or exchanging

containers.

Cylinder requirements

AS/NZS5601 (relevant version) states that the cylinder must comply with AS2030.1 (which states that a

cylinder must not be filled unless it has a current stamp mark of a certified test station) and

AS/NZS1596.

When you read AS/NZS1596, it states that cylinders with the identification mark ‘4’ must not be used

for installation in caravans or similar mobile applications.

The following points apply to caravans, etc that have a cylinder system designed to remain connected to

the consumer piping system while the caravan is moving.

Cylinder installation

Clearances around the cylinder must comply with those specified in the appendices. Although the

figures depict a building, the clearances also apply to caravans.

A cylinder must not be installed inside a caravan unless it is in a cylinder compartment, as per (relevant

version) AS/NZS5601.

Location of a cylinder

On a caravan, cylinders may be located:

• mounted externally on the draw bar of the van

• in a similarly secured location on the caravan wall which would normally face the towing

vehicle. (May or may not be covered with a light weight cover, open at the bottom)

• in a fully open recess within the profile of the van, which is vapour proof to the inside of the

caravan.

• in a cylinder compartment within the profile of the caravan or on the draw bar.

The cylinders must be installed upright with the valve uppermost. This is to ensure the safety valve inlet

is always in the vapour space and clear of the liquid contents of the cylinder.

The cylinder or cylinder carrier must be rigidly secured and be capable of withstanding a steadily

applied load of four times the weight of the filled cylinder from any direction.

Mobile home Caravan



Camper trailer Poptop campervan

Poptop caravan

Cylinder in special compartment



Twin cylinder installation with threaded hook bolts used for securing

Cylinder clamp Cylinder cradle

Cylinder in a compartment

If the compartment is accessible from the inside of the van, then there is a restriction on the total

number and capacity of the cylinder(s). In this case cylinders must not exceed two (2) 15kg cylinders.

A durable label as per (relevant version) AS/NZS5601 must be attached in a prominent position

adjacent to the cylinder compartment, usually on the door.

The cylinder compartment size and the location of equipment must comply with the following as

appropriate.

• Only cylinders and their associated equipment are to be housed in the compartment.



• Associated equipment includes:

− support bracket(s)

− regulator and pigtail(s)

− contents gauge (if required)

− consumer piping

− possibly an isolating valve

• The drain outlet must be in a position where the cylinders won’t obstruct it.

• Easy removal of the cylinder(s) and operation of the cylinder valves must be possible.

• The compartment must be constructed of material that is water and corrosion resistant.

• The filled cylinder(s) must be able to be secured.

• The compartment must be sealed to prevent gas vapour from entering the caravan.

• The access door or opening must be openable without the use of tools, ie screwdriver or

spanner. A keyed lock is acceptable.

• A minimum 25 mm diameter drain must be fitted to the base of the compartment and be

terminated at a point which faces away from the forward direction of travel (this to prevent

pressurising of the compartment, by air forcing up the drain pipe when travelling). It must also

be directed away from, and be:

− at least 1 m from any opening into the caravan, unless the opening is at least 150 mm

above the drain outlet

− at 1.5 m from any source of ignition unless the source of ignition is at least 500 mm

above the outlet.

• The compartment must not contain any electrical equipment other than a non-sparking shut off

device.

Cylinder regulator

A cylinder regulator must be rigidly fixed to the van or other rigid mounting, and be positioned with the

diaphragm vertical and the vent pointing vertically down and be protected.

You cannot use a regulator with a POL connection and connect it directly to the cylinder. The reason

for this is that the connecting piece between the 1st and 2nd.stage sections of the regulator are considered

to be a weak point, and could crack or break with all the vibration and movements of the caravan.

The connection of the regulator can be made by:

• Copper pigtail

• Hose assembly

• Stainless steel

There is not much room in most compartments, so make sure you don’t position the regulator too high,

to prevent kinking of the hose or piping when fitting them.



Consumer piping

The set out of the piping system needs to be in accordance with the design drawing or instruction and

comply with the (relevant version) AS/NZS5601 Gas installations and AS/NZS1596.

Consumer pipe and fittings must be free of defects and comply with (relevant version) AS/NZS5601.

This also applies to errors you might make during installation, eg:

• start to cut pipe with tube cutters in the wrong place and then move them to correct cut off

position, leaving a groove in the pipe

• not making the flare the correct length (too short, any strain on the pipe can pull the flare and

cause a leak, etc.)

Consumer piping (piping downstream of the regulator) must not be located where it is likely to be

damaged, unless adequate protection is provided. This could be a metal conduit or similar.

Clipping piping to the floor or side of the chassis as shown below is acceptable.

Typical locating position for pipe

Use a grommet or similar where piping penetrates partitions, floors or structural members. This is to

prevent abrasion of the pipe which could eventually lead to a gas leak.

Ensure that there is flexibility in the piping to prevent loosening of any component due to vibration and

movement of the structure or thermal expansion and contraction.

Pipe support is required for hose assemblies as well as metal piping. Only use suitable non-ferrous clips

that are compatible with the type of pipe used, and space the clips as per the Table in (relevant version)

AS/NZS5601. Note the part about changes of direction and tees in the table.

Where more than one appliance is to be installed:

• the main run of piping is to be installed outside the caravan

• each appliance must be connected separately to the main run (can’t tee off inside the van)

• the branch pipe must enter adjacent to the appliance (not behind it, as this makes it difficult to

connect and also to locate and repair leaks should they occur. It also places the manual shut

off valve in a location where it is accessible).



Restriction on pipe joints

• Making pipe joints in inaccessible positions (once the wall or floor is in place) is not

permitted.

• No pipe joints are allowed where the piping passes through a sleeping accommodation area or

engine compartment.

Restriction on hose assemblies used as consumer piping

• If only one appliance is to be installed, then a hose assembly is acceptable, as long as it is in

one continuous length from the regulator outlet to the appliance inlet, and is supported in

accordance with (relevant version) AS/NZS5601.

• If a hose assembly is to be used to connect between the manual shut off valve on the rigid

consumer piping and the appliance –

− ensure the manufacturers specs allow it (many don’t!)

− it must be of adequate diameter for the appliance’s gas consumption.

− Hose assemblies shall be as short as practicable

Worksheet

Now go to the Worksheet and answer Questions 13 – 18.

Consumer instruction labels and plates

There are three for caravans:

• a warning label fixed near cooking appliances and gas lights

• an instruction plate to be displayed near cylinders

• an instruction plate to be displayed near an appliance (usually the cooker).

Appliance installation

The location of cylinders and appliances must comply with (relevant version) AS/NZS5601 Gas

installations and AS/NZS1596. The location should be in accordance with the design of the job, unless

this contravenes the regulatory requirements.

General

All appliances should:

• be GTRC approved

• be installed to (relevant version) AS/NZS5601 and the manufacturer’s installation instructions

• be in a position which is convenient for the consumer, but also protected from draughts or

damage

• be accessible for servicing

• have adequate provision of air for combustion

• make maximum use of natural light

• be suitably secured to minimise movement and prevent strain on the pipe connection

• be installed inside the caravan so that in the event of a fire at the appliance, the exit is not

restricted

• Gas appliances must have adequate separation from flammable materials such as curtains,

bedding and wall panelling.



Prohibited appliances

• Water heaters other than room sealed type

• Space heaters

− Only room-sealed types of space heater are permitted. That is because the air for

combustion comes from outside the van and the products of combustion discharge

outside as well.

• Appliances designed to operate unregulated or at pressures exceeding 2.75 kPa (unless

specifically approved by the authority).

− Generally what is known as a high pressure LPG appliance. That is, one which

connects directly to a cylinder or via a hose coupling, such as camping stoves. Can be

either propane or butane fuelled.

Required clearance between appliance and fuel filler cap vent or vent

Except for caravans fuelled by diesel, the minimum clearance between a fuel filler cap or fuel tank vent

and an appliance flue or combustion air intake must be 1metre.

Poor design of some mobile units increases the risk of fire or explosion, especially if the fuel tank filler

and refrigerator vents are on the same side. Refer diagrams below.

Placing vent

This diagram below shows what happens when the fuel filler and ‘fridge vents are on the same side.

Petrol vapour sinks from the filler inlet and quickly enters ventilation openings. The refrigerator pilot

would ignite the explosive vapour/air mixture instantly.



Petrol vapour

An accessible manual shut off valve must be provided on the inlet connection to an appliance.

Remember that the branch pipe must be adjacent to the appliance.

The appliance must also be secured. This is to minimise movement and vibration of the appliance as

well as minimise strain on the appliance connection. If the appliance has been designed for caravan or

marine installation, it will include special fixing brackets. If the appliance is an ordinary domestic type,

you will have to fabricate the bracket yourself.

The installation of a refrigerator must comply with the following.

• The refrigerator must be installed with the means to exhaust the combustion products to the

outside atmosphere (refrigerator manufacturers have special flue kits for this type of

installation. See figures below).

Refrigerator vent kits

• The refrigerator must be installed within a sealed recess as per requirements of (relevant

version) AS/NZS5601. Refer to diagrams below.



Sealed recess details

Types of vents

Note

Additional ventilation is required for the refrigerator. This ventilation

is to assist in the proper functioning of the refrigerator and must not

be less than the following table.

Refrigerator storage capacity (L) Minimum free area of ventilation

(mm2)

Not exceeding 100 L 32500

Exceeding 100 L and not exceeding 200 L 45000

Exceeding 200 L 65000

Water Heaters

Water heaters other than room sealed type are not permitted to be installed. Instantaneous water

heaters other than room-sealed types are not permitted to be installed in a bedroom, bathroom, toilet or

combined sleeping or living room. Storage water heaters shall not exceed 40 mJ/hr if installed in a toilet

or bathroom.

The diagrams below depict two types of balanced flue storage HWS. The first model is fitted through

the wall externally. The other is installed internally and only the balanced flue penetrates the wall.



Balanced flue storage HWS

Flued appliances

Flues shall be installed in accordance with (relevant version) AS/NZS5601. Take note that there should

be a minimum clearance of 50 mm between the lowest opening of the cowl and the outer roof of the

caravan. Clearances to combustible surfaces must also be adhered to.

Air supply to appliances

When appliances other than room–sealed types are installed, two openings to provide permanent and

unrestricted ventilation must be fitted to the caravan.

• In the case of a pop-top leisure caravan, this requirement needs to be satisfied whether the top

is up or down.

• In the case of a camper trailer (one which folds to trailer height), the requirement need only be

satisfied when the trailer is fully erected.

The openings must be located at opposite sides or ends of the area except in the case of the popup type

van when the top is down. This is because the opening is in the canvas part of the popup.

Where the lower ventilation is fitted in the floor, it must conform to (relevant version) AS/NZS5601.

The free area must have a minimum free ventilation area calculated using the following formula, but in

no case shall the total area of the ventilation openings be less than that given in (relevant version)

AS/NZS5601.



Name:………………………………………………………

Worksheet

CPCPGS3046A: - Install LPG systems in caravans, mobile homes, and mobile workplaces

The student should complete this worksheet before attempting the practical installation.

The worksheet may form part of the assessment and should be checked and signed off by your trainer

or supervisor.

1. State the flammability limits for LPG

Upper

Lower

2. How many mega Joules are there in one cubic metre of LPG?

3. Is natural rubber tubing suitable for conveying LPG? Explain why.

4. Name the three factors which must be present to obtain combustion.



6. What is the ideal air/gas ratio for LPG?

7. List the main products of complete and incomplete combustion.

Complete Incomplete

8. What would be the effect of having insufficient air supply to a burner?

9. List three gas safety requirements to be considered when planning to install LPG in a caravan.

10. List four sources where you can get information from for your installation.

(a)

(b)

(c)

(d)

11. List the steps in determining the requirements for an LPG system in a caravan.

12. When installing the pipework to more than one appliance in a caravan, where must the tees be

located?



13. Are individual isolating valves required for each appliance? Circle one

Yes

No

14. List the location and clause number of the following consumer labels:

Type Location Clause No.

Cylinders

Appliance

15. The diagram below is a cross section of a caravan chassis. Indicate where the pipe work

should be placed.

16. How is the pipework protected from airborne stones etc?

17. The diagram below represents the piping to appliances in a caravan.

From the information supplied, calculate the pipe sizes from the OPP regulator.



Section Load Size

18. State the minimum requirements for horizontal and vertical clearance to combustible material

from cooktop burners on gas cookers.

19. Indicate if the following statements are true or false.

Caravans require a leak detection system True or

False

Recreational vehicles require a galvanized cylinder. True/False

Unflued space heaters can be installed in caravans. True/False

Abrasion protection of pipework is not required for handy vans. True/False

Refrigerators installed in an enclosed space require additional

ventilation.

True/False

Balanced flue hot water services can be fitted in mobile homes. True/False

23. What is the minimum diameter and maximum length of a cylinder compartment?

Minimum diameter

Maximum length

24. Refer to (relevant version) AS/NZS5601 Clause 6. A cylinder regulator must be___________

to ensure the maximum ______________________does not exceed 3 kPa with all connected

appliances ____________________

25. What restrictions apply to using a hose assembly as consumer piping?



Trainer or Supervisor’s Signature:

Date of Completion:



Name:………………………………………………………

Practical application

CPCPGS3046A: Install LPG systems in caravans, mobile homes, and mobile workplaces

Your trainer or supervisor will now work with you to demonstrate and explain installing LP gas

systems in caravans, mobile homes, and mobile workplaces.

The following points will be covered.

Plans or specifications and any special instructions are obtained

WHS requirements associated with the installation and commissioning of LP gas systems in

caravans, mobile homes, water craft and mobile work places, and the workplace environment,

are adhered to throughout the work

Quality assurance requirements for company operations are identified and adhered to

Gas load or design requirements are determined from plans, specifications or job drawing or

workplace instructions

Capacity of the system is calculated to ensure adequacy for the required load and compliance

with standards and workplace requirements

Appropriate regulator and piping is identified in terms of size, connection sizes and capacity in

accordance with standards and workplace requirements

The location of cylinders, appliances and piping set out is identified in accordance with job

requirements and in compliance with standards and workplace requirements

Quantity of piping, components and fittings are estimated in compliance with standards and

workplace requirements

The required materials, equipment, appliance(s) and cylinder(s) are ordered and checked for

compliance with docket or order form and for acceptable condition

Appropriate tools and equipment for the installation and commissioning of LP gas systems in

caravans, mobile homes, water craft and mobile work places, including personal protective

equipment, are identified and selected

Work is planned in conjunction with others involved in, or affected by, the work

Work area and materials are prepared to support the efficient installation of the system

Cylinder(s), regulator(s), associated pipework, appliance(s) and fixings are installed in

compliance with manufacturers’ requirements, standards and workplace requirements

Compliance plates are located and fitted in accordance with regulatory requirements, standards

and workplace requirements

Appropriate test equipment is selected

System is tested in accordance with standards and workplace requirements

System is adjusted to provide the required flow pressure in conformance with standards and

workplace requirements

Test data is recorded in the format required by regulatory requirements and workplace

requirements

Work area is cleared and materials disposed of or recycled in accordance with State or Territory

legislation and workplace procedures

Tools and equipment are cleaned, checked, maintained and stored in accordance with

manufacturers’ recommendations and workplace procedures

Documentation is completed in accordance with workplace requirements



On completion of this practical application you will be assessed. To prepare for your assessment make

sure you read the Assessment Checklist, the Assessment Task and Questions.

Trainer or Supervisor’s Signature:………………………………………………..

Date of Completion;………………………………

Assessment checklist

CPCPGS3046A: - Install LPG systems in caravans, mobile homes, and mobile workplaces

Criteria Yes No

Have the worksheets been successfully completed?

Has the practical task been completed?

Are the job specification and local authorities’ or utilities’ requirements

available?

Trainer or Supervisor’s Signature:……………………………………………….

Date of Completion:…………………………….

© commonwealth of australia 2015 1 -...

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