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Elements and Performance Criteria

  1. Evaluate design parameters.
  2. Plan and detail system components.
  3. Design and size systems.
  4. Prepare documentation.

Required Skills

Required skills

Required skills for this unit are

communication skills to

confirm job specifications and client requirements

communicate with others to ensure safe and effective work practices

enable clear and direct communication using questioning to identify and confirm requirements share information listen and understand

prepare documentation including plans specifications and schedules

produce operation and maintenance manual

read and interpret

plans specifications drawings and design briefs

standards and manufacturer requirements and manuals

statutory and regulatory requirements

use language and concepts appropriate to cultural differences

use and interpret nonverbal communication such as hand signals

identifying and accurately reporting to appropriate personnel any faults in tools equipment or materials

innovation skills to develop creative and responsive approaches

planning and organisational skills to

research collect organise and understand information relating to the design of complex cold water systems

take initiative and make decisions

problem solving skills to analyse requirements consider options and design an appropriate system

teamwork skills to work with others to action tasks and relate to people from a range of cultural and ethnic backgrounds and with varying physical and mental abilities

technological skills to

access and understand sitespecific instructions in a variety of media

use mobile communication technology

Required knowledge

Required knowledge for this unit is

ASNZS National plumbing and drainage set

AS Design charts for water supply and sewerage

common terminology and definitions used in design of cold water reticulation systems

nature of materials used and effects of performance under various conditions

other standards codes or standard operating procedures

principles of technology used in design of cold water reticulation and hydrant and hose reel systems for all classes of building

requirements of state regulatory authorities Australian standards and manufacturer specifications including hazards identified in relation to devices and systems used

workplace safety requirements including relevant statutory regulations codes and standards

Evidence Required

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 projectbased 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 effective performance and application of drainage principles and detailing of system components used in the drainage industry

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

evaluating and documenting design parameters including client regulatory manufacturer and Australian and New Zealand standard requirements for a range of complex sanitary plumbing and drainage systems

applying regulatory manufacturer and Australian and New Zealand requirements for a range of complex cold water distribution systems

planning and detailing system components including

flush valves

backflow prevention devices

meter assemblies

thrust blocks

piping systems

complying with OHS regulations applicable to workplace operations

applying organisational quality procedures and processes

designing and sizing a range of cold water distribution and delivery systems

designing and sizing a range of flush valve systems

preparing plans for a range of complex cold water distribution systems

preparing a specification for a cold water distribution system

preparing a testing and commissioning schedule

preparing an operation and maintenance manual

applying correct design principles and techniques

identifying typical faults and problems that occur and taking action necessary to rectify

interactive communication with others to ensure safe and effective workplace operations

Context of and specific resources for assessment

This competency is to be assessed using standard and authorised work practices safety requirements and environmental constraints

Assessment of essential underpinning knowledge will usually be conducted in an offsite context

Assessment is to comply with relevant regulatory or Australian standards requirements

Resource implications for assessment include

an induction procedure and requirement

realistic tasks or simulated tasks covering the minimum task requirements

relevant specifications and work instructions

tools and equipment appropriate to applying safe work practices

support materials appropriate to activity

workplace instructions relating to safe working practices and addressing hazards and emergencies

material safety data sheets

research resources including industry related systems information

Reasonable adjustments for people with disabilities must be made to assessment processes where required This could include access to modified equipment and other physical resources and the provision of appropriate assessment support

Method of assessment

Assessment methods must

satisfy the endorsed Assessment Guidelines of the Construction Plumbing and Services Training Package

include direct observation of tasks in real or simulated work conditions with questioning to confirm the ability to consistently identify and correctly interpret the essential underpinning knowledge required for practical application

reinforce the integration of employability skills with workplace tasks and job roles

confirm that competency is verified and able to be transferred to other circumstances and environments

Validity and sufficiency of evidence requires that

competency will need to be demonstrated over a period of time reflecting the scope of the role and the practical requirements of the workplace

where the assessment is part of a structured learning experience the evidence collected must relate to a number of performances assessed at different points in time and separated by further learning and practice with a decision on competency only taken at the point when the assessor has complete confidence in the persons 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


Range Statement

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below. Essential operating conditions that may be present with training and assessment (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) may also be included.

Scope of work:

includes interpretation of plans and specifications

includes sizing and documenting layout of complex cold water systems for applications including residential, commercial and industrial

may be for new projects or an existing structure being renovated, extended, restored or maintained.

Design requirements may include:

architectural specifications

builder specifications

owner requirements

specialist water use applications.

Cost-benefit analysis may include:

comparison of range of suitable materials and system choices available to enable cost-effective choices to be made without compromising the integrity of the project.

Statutory and regulatory requirements may include:

Acts and regulations

local and state government policies.

Australian and New Zealand standards may include:

AS/NZS3500 National plumbing and drainage set: Parts 1.1 and 1.2

AS2200 Design charts for water supply and sewerage

Building Code of Australia.

Manufacturer requirements may include:

material specifications

pump tables

sizing tables

technical and trade manuals.

Desktop study can include collection and interpretation of existing data for design purposes from:

architectural and building plans

council plans

developer plans

other documents and reports as available.

Flow and pressure tests include:

on-site measurement of flow (l and s), velocity (m and s) and pressure (kPa)

interpretation of flow and pressure tests conducted by a contractor.

Performance requirements may include:

flow, velocity, pressure and discharge requirements, established using Australian and New Zealand standards and local authority plans.

Layout of pipework systems may include:

dual feed

ring main

single pipe.

Fittings and valves may include:

fittings:

bends

elbows

tees

unions

valves:

backflow prevention

excess pressure

isolating

pressure limiting

pressure reduction

strainers.

Backflow prevention devices may include:

break tanks

property and individual protection

testable and non-testable devices

zone protection.

Flush valve system types may include:

backflow prevention requirements

gravity

mains pressure

pipe sizing requirements

storage requirements.

Cold water system components cover:

meter assemblies, including:

direct and indirect

electronic

inferential

magnetic

thrust blocks and their design elements, including:

design details for tees, elbows, valves and meter assemblies

keying and anchorage points

sizes

soil characteristics

velocity and flow forces to be resisted

pipe fixings, including:

anchors

bedding

bracket spacing

corrosion protection

cover

hanging brackets

material requirements

saddles

wall and ceiling brackets

water storage systems, including:

automatic controls

inlet valve design and sizing

outlet sizing

overflow requirements

safe tray requirements

tank sizes.

Pump, pump controls and pumproom requirements may include:

automatic controls

impeller sizing

inlet and outlet design requirements

installation and mounting requirements

pump selection

pump sizing

space requirements

valve requirements.

Materials include:

acrilonitrile butadiene styrene (ABS)

composite pipework

copper

cross-linked polyethylene

fittings and fixtures

polybutylene

protective coatings

steel.

Jointing methods may include:

brazing

compression

flaring

mechanical joints

rubber ring joints

screwing

soldering.

Installation requirements include:

bedding

clipping

installation details

jointing requirements

level of workmanship.

Delivery systems may include:

constant flow variable speed pumps

downfeed

hydropneumatic

pressure ratio

upfeed.

Plans include:

axonometrics

cross-sections

details

elevations

isometrics

schematics

sections.

Specification may include:

bedding

clipping

jointing

manufacturer

materials

specialised components

valve selection

workmanship.

Testing may include:

air pressure test

defect inspection

hydrostatic test

mains pressure test

quality assurance (QA) audit.

Commissioning schedule may include:

flow test

leak check

pressure test

system purge

valve operation.

Operation and maintenance manual may include:

leak detection

pump maintenance

valve maintenance

water auditing

yearly inspection

yearly maintenance requirements.