Cpcpdr2022a - Install Domestic Treatment Plants

CPCPDR2022A - INSTALL DOMESTIC TREATMENT PLANTS

CONSTRUCTION, PLUMBING AND SERVICE

INTEGRATED FRAMEWORK

TRAINING PACKAGE

CPC08

CPCPDR2022A

INSTALL DOMESTIC TREATMENT PLANTS

LEARNING GUIDE

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

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

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

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

Flexible Delivery......

Install domestic treatment plants......

Unit Descriptor......

Element......

Performance Criteria......

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

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

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

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

Texts......

Web sites......

Video or audio cassettes......

Safety......

Workplace environment and safety......

Introduction......

Prepare for work......

Quality assurance......

Permits and licences......

Plans and specifications......

Locality plan......

Block plan......

Drainage plan......

Connections to drain......

Air flow in the drainage system......

Fixing and jointing techniques......

Air to liquid ratio......

Regulations......

Sequencing the job......

Excavation processes......

Leveling and alignment processes......

Identify installation requirements......

Selecting the domestic treatment plant

Septic Tanks......

Aerobic Treatment Unit......

Calculating the quantity of materials......

Ordering and checking the delivery......

Tools and equipment......

Personal protective equipment (PPE)

Install domestic treatment plant

Moving and handling materials......

Marking out......

Excavating the site......

Installing the domestic treatment plant......

Making the tank ready for use......

Restoring the site......

Clean up......

Worksheet...... 4

Pracatical Application...... 8

Assessment checklist...... 30

1

© Commonwealth of Australia 2015

CPCPDR2022A - INSTALL DOMESTIC TREATMENT PLANTS

What is this resource about?

Welcome to CPCPDR2022A – Install domestic treatment plants. 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 learner unit, which contains background information on install septic tanks
• worksheets, which prepare you for the practical application
• practical application, which allows you to experience installing septic tanks
• 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 practise installing septic tanks
• 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.

• characteristics and application of different pipe fittings and fixture supports, including fixing and jointing techniques
• excavation processes and procedures
• job safety analysis (JSA) and safe work method statements (SWMS)
• levelling and alignment processes
• load lifting and handling procedures
• principles and techniques of effluent treatment and disposal
• processes for accessing information and for calculating material requirements
• regulations and requirements of regulatory authorities regarding effluent disposal and the installation of domestic treatment plants
• SI system of measurements
• standards applicable to the installation
• 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&includeSupersededData=true&includeSupersededData=false&homePage=true&javaScriptEnabled=true&typeAllTrainingComponents=true

What do I have to do?

To demonstrate competence in this unit you will be required to show the level of skills and knowledge for each of the elements involved in installing septic tanks:

The elements are:

• plan work activities
• determine installation requirements
• install domestic treatment plant
• clean up.

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

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 septic tanks.

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 CPCPDR2022A – Install domestic treatment plants you must have successfully completed the following pre-requisite:

• CPCPCM2043A – Carry out WHS requirements

It is also recommended that prior to commencing CPCPDR2022A – Install domestic treatment plants you should have successfully completed the following competencies:

• CPCPCM2043A - Carry out WHS requirements
• CPCPCM2040A - Read plans and calculate plumbing quantities
• CPCPCM2047A - Carry out leveling.

Project work may also group pre-requisite and or co-requisite competencies together to carry out such projects. It is recommended that the following competencies are grouped with this unit of competency:

• Effluent systems
• Sewer drainage.

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/NZS1546.1 – On-site domestic wastewater treatment units - Septic tanks
• AS/NZS 3500 - Plumbing and drainage
• Plumbing Code of Australia
• State and Territory Regulations may override this Learning Guide.

Web sites

Video or audio cassettes

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 will need include:
• 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

Introduction

In this unit you will look at installing domestic treatment plants. Before you can install domestic treatment plants you will need to have an understanding of the different types of domestic treatment plants, the planning requirements and connection methods.

There are three basic types of domestic treatment plants. Each type has advantages and disadvantages. You should always consider this when you are planning an installation.

The main types of domestic treatment plants are:

• pre-cast concrete

 constructed in one piece

 no underground joints

 strong

 standard sizes

• glass reinforced plastic (GRP, fibreglass)

 reasonably lightweight

 require anchorage

 made in sections

 limited sizes

• plastic septic tanks (polyethylene and polypropylene)

 lightweight

 strong

 durable

 require anchorage

 variety of sizes.

All domestic treatment plants must be constructed in accordance with AS/NZS1546.1 and the Code of Practice – Septic Tanks.

Prepare for work

Before you begin the installation of domestic treatment plants you need to obtain the plans, specifications and other types of information about the job. Gathering information about the job will help you to make informed decisions about the nature of the job and how to plan and sequence the entire process. Also, before beginning any work, you may need to obtain work notices and submit them to the relevant authorities.

The table below shows some of the information sources you will use and the type of information each source can provide you with.

• Plans and specifications.
• Local regulations.
• Local interpretations.

• Locality.
• Location of installation on block.
• Land contours.
• Tank details.
• Distribution system.

• Standard of work.

• Work notices.
• WHS relevant to installation.

• Fall of land.
• Position of buildings.
• Other structures.
• Driveways.
• Trees.
• Shrubs.
• Low lying areas.

• Other relevant information.
• Best time to do the work.

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 which you will need to follow. Other things you need to consider may include the following.

• The installation must be laid to the sewer plan drawn up for that particular job.
• The plumber must consider all others on the work site when installing a sewerage drain.
• Consider access to the property and buildings where you are excavating and installing the drain.
• Consider location of other services. Do not damage them.
• It may be necessary to have some other services (gas, water, stormwater, etc) rerouted. If this is the situation, prearrange with others a suitable time to work in together.

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, quality of materials used and the way the work is done.

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

Permits and licences

A permit is required from a local council or shire for the installation, alteration and use of a septic tank. The application for a permit must be made by the owner of the septic tank at the time of installation. The local council or shire chief engineer will be able to advise the owner what permits and licences are required for each installation.

All septic tank installations require permits or certificates. Contact your local authorities before commencing work to be sure of these requirements. Some authorities require inspections at different stages of the installation. You need to know these requirements before commencing work.

For large systems serving hotels, motels, factories and other commercial or industrial premises, permits from the planning authorities and a licence from the Environment Protection Authority (EPA) may be required.

Generally speaking, any septic tank with a capacity of 5000 litres plus requires:

• a planning permit
• an EPA works permit
• an EPA licence to discharge effluent.

You should be aware of all this information as you may be asked to assist the owner with the paperwork.

Plans and specifications

Applications for permits to install a system must be accompanied by an original and one copy of plans drawn to scale, and specifications including the following details:

• a locality plan showing the location of the premises
• the direction of north and the street or lot number
• a block plan showing contours, the relative position of the proposed septic tank system and all existing or proposed buildings, driveways, easements, streams and underground water tanks and wells
• details including a plan and sections of the proposed septic tank system
• details and layout of the effluent disposal system to be used, showing distances from boundaries, buildings and driveways
• the existing or proposed position of stormwater drains, water supply pipes, underground power lines, telecom cables, gas pipes and any other services
• the measures proposed to intercept and divert draining from other parts of the site away from any disposal area, if site conditions require it
• a summary of the data from which the capacity of the septic tank system has been computed, such as contributory population, percolation rate of the soil, dosage rates or design factors used for non-standard applications.

Locality plan

A locality plan is a plan of the location of the property showing the following features drawn to scale:

• the position of the house of the block
• the outline showing the shape of the house
• the block boundary lines
• the street or block number
• the direction of north.

An example of a locality plan is shown below.