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Evidence Guide: NWP403A - Investigate and plan the optimisation of potable water distribution systems

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

NWP403A - Investigate and plan the optimisation of potable water distribution systems

What evidence can you provide to prove your understanding of each of the following citeria?

Evaluate potable water distribution system performance.

  1. Review existing distribution system performance data against relevant organisational and legislative requirements.
  2. Identify the impact of the distribution system on water quality.
  3. Identify and coordinate any additional sampling and testing required for valid evaluation of current process performance.
Review existing distribution system performance data against relevant organisational and legislative requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify the impact of the distribution system on water quality.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify and coordinate any additional sampling and testing required for valid evaluation of current process performance.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate water distribution system issues.

  1. Review existing system fault reports and relevant water quality information.
  2. Identify and record links between operational problems and maintenance activities.
  3. Investigate the operational status of system components with reference to manufacturers' and suppliers' specifications.
  4. Carry out distribution system configuration investigations to identify potential deficiencies.
Review existing system fault reports and relevant water quality information.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify and record links between operational problems and maintenance activities.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate the operational status of system components with reference to manufacturers' and suppliers' specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Carry out distribution system configuration investigations to identify potential deficiencies.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plan optimisation of potable water distribution system.

  1. Identify potential hazards to the distribution system.
  2. Select appropriate preventive measures
  3. Develop and validate a system optimisation plan.
Identify potential hazards to the distribution system.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select appropriate preventive measures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Develop and validate a system optimisation plan.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The candidate should demonstrate the ability to optimise system performance and maintenance planning in potable water distribution systems including:

assessing distribution system performance and impacts on water quality

investigating system faults and deficiencies and assessing the status of system components

conducting hazard assessment and proposing prevention strategies

producing and monitoring a potable water distribution system optimisation plan.

Context of and specific resources for assessment

Access to the workplace and resources including:

documentation that should normally be available in a water industry organisation

relevant codes, standards, and government regulations.

Where applicable, physical resources should include equipment modified for people with disabilities.

Access must be provided to appropriate learning and/or assessment support when required.

Assessment processes and techniques must be culturally appropriate, and appropriate to the language and literacy capacity of the candidate and the work being performed.

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

a decision of competence should only be made when the assessor has complete confidence in the person's competence over time and in various contexts

all assessment that is part of a structured learning experience must include a combination of direct, indirect and supplementary evidence

where assessment is for the purpose of recognition (RCC/RPL), the evidence provided will need to be authenticated and show that it represents competency demonstrated over a period of time

assessment can be through simulated project-based activity and must include evidence relating to each of the elements in this unit.

Questioning will be undertaken in a manner appropriate to the skill levels of the operator, any cultural issues that may affect responses to the questions, and reflecting the requirements of the competency and the work being performed.

Required Skills and Knowledge

Required skills:

investigate and report on operational and control system problems

coordinate sampling and testing

performs various calculations to provide data for the analysis and development of options and solutions

interpret plans, charts and instructions

operate control and communication systems

use safety and personal protective equipment

communicate with colleagues, consultants and suppliers

produce optimisation reports

interprets a range of complex and technical documents, including relevant:

regulatory, legislative, licensing and organisational requirements

industry codes and standards

specifications

organisational policies

articulate complex ideas clearly

analyse and evaluate reports and reference materials

work collaboratively with relevant stakeholders

analyse problems and recommend appropriate remedial solutions

identify risks and hazards

identify opportunities for improved distribution system management

participate in the provision of appropriate information to inform workplace processes

manage work priorities.

Required knowledge:

Australian Drinking Water Guidelines

water quality parameters

relevant legislation

relevant enterprise policies

range of appropriate measuring and testing procedures

investigation procedures

customer expectations and requirements

operations and maintenance policies and procedures

occupational health and safety and environmental legislation, Acts and procedures

environmental management procedures

control procedures for environmental risks and incidents

system hydraulics

incident management processes

system layout

system processes

system operation

water main isolation procedures

sampling and testing procedures

safety procedures

lock out procedures for mechanical and electrical installations

policies, standard operating procedures and legislation

relevant utilities and service bodies

communication systems

risk management principles

risk factors and potential hazards involved in water systems

equipment operation, capacity and limitations of control systems.

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.

Organisational or legislative requirements may be determined by:

federal, state and local environmental and water quality legislation and guidelines

organisational policies

standard operating procedures

communication and reporting protocols

quality assurance standards and processes.

Distribution system may include:

pipes

hydrants

valves

backflow prevention devices

service reservoirs

chlorinators.

Sampling may include:

frequency of sampling

bacteriological samples

grab samples from:

mains

customer taps

service reservoirs

high-risk user facilities.

Testing may include:

microbiological testing

levels of manganese and iron

turbidity

colour

taste and odour

copper

pH

chlorine residuals

hardness

presence of disinfection by-products.

Manufacturers' and designers' specifications may include:

valve installation and operation

hydrant installation and operation

pipe pressure specifications

calibration and operation of inline equipment.

Potential deficiencies may include:

low pressure areas

dead ends

low flow areas

backflow

cross connections

uncovered or unsecured service reservoirs

leaks

loss of disinfectant residual.

Potential hazards may include:

microbiological contamination of water

waterborne disease outbreaks

metal poisoning

pressure for fire fighting appliances.

Preventive measures may include:

maintenance of disinfection residuals

maintenance of adequate system pressure

minimise hydraulic detention time

flushing, scouring and swabbing.