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Evidence Guide: NWP257B - Maintain and repair wastewater collection 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

 

NWP257B - Maintain and repair wastewater collection systems

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

Investigate reported system problems.

  1. Investigate customer complaints.
  2. Locate problems using inspection points and system fault location techniques.
  3. Identify organisational and customer responsibilities for faults.
  4. Select remedial action according to organisational procedures.
Investigate customer complaints.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Locate problems using inspection points and system fault location techniques.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify organisational and customer responsibilities for faults.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select remedial action according to organisational procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plan and prepare for maintenance and repair.

  1. Determine work requirements for maintenance and repair of assets from specifications and instructions.
  2. Select and check equipment and tools required to meet task and site safety requirements.
  3. Select, fit and use personal protective equipment.
Determine work requirements for maintenance and repair of assets from specifications and instructions.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select and check equipment and tools required to meet task and site safety requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select, fit and use personal protective equipment.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain and repair assets, pipes and fittings.

  1. Controlflows to allow maintenance and repair of assets.
  2. Repair or replace leakages and damaged assets according to organisational procedures.
  3. Select fittings and tools and lay or join assets according to manufacturer guidelines and organisational requirements.
  4. Conduct preventative maintenance according to organisational maintenance programs.
  5. Locate system chokes and blockages and arrange removal.
  6. Perform cleaning and flushing according to legislative and organisational requirements.
  7. Inspect minor structures and determine and apply appropriate repair techniques.
Controlflows to allow maintenance and repair of assets.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Repair or replace leakages and damaged assets according to organisational procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Select fittings and tools and lay or join assets according to manufacturer guidelines and organisational requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conduct preventative maintenance according to organisational maintenance programs.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Locate system chokes and blockages and arrange removal.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform cleaning and flushing according to legislative and organisational requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect minor structures and determine and apply appropriate repair techniques.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Finalise work.

  1. Check, maintain and store equipment, tools and materials to manufacturer guidelines and organisational procedures.
  2. Restore work site to meet environmental and organisational requirements.
Check, maintain and store equipment, tools and materials to manufacturer guidelines and organisational procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Restore work site to meet environmental and organisational requirements.

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, the 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 maintain and repair wastewater collection assets by:

investigating reported faults

negotiating with customers

applying organisational procedures to selection of system fault solutions

preparing equipment, tools and work sites

conducting maintenance and repair of pipes, fittings and small structures

reporting blockages

cleaning and flush systems

clearing work site

completing documentation.

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 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.

In all cases where practical assessment is used it will be combined with targeted questioning to assess the underpinning knowledge. Questioning will be undertaken in a manner appropriate to the skill levels of the operator and cultural issues that may affect responses to the questions, and will reflect the requirements of the competency and the work being performed.

Required Skills and Knowledge

This describes the essential skills and knowledge and their level, required for this unit.

Required skills:

identify and respond to operational problems

produce reports and logs

use safety and personal protective equipment

use tools and machinery

follow plans, charts and instructions

perform work-related calculations

apply policies

apply monitoring procedures and standards

communicate effectively with employees and customers

work effectively as part of a team

use communication systems

give and receive instructions

identify system faults

use literacy skills in regard to verbal and written communication in the workplace

identify hazards.

Required knowledge:

system hydraulics basics

system layout

environmental aspects of maintenance

customer and organisational responsibilities for blockages

standards and procedures for organisational repair and maintenance

lock-out procedures for mechanical and electrical installations

closed circuit television (CCTV) and other methods of monitoring

relevant utilities and service bodies

communication systems

safety procedures

hazardous materials handling

landscape and ground structure of work area

risk factors and potential hazards of monitoring processes

equipment operation

capacity and limitations

effects of weather and conditions on system operation and plant

control systems

pipes and fittings

disinfection of systems and chemical usage.

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. Add any 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.

Work requirements may include:

location and extent of work

location of utilities

site boundary protection and traffic control

hazards, risks and preventative solutions.

Assets may include:

collection system pipe work, including:

polyvinyl chloride (PVC)

polyethylene

vitrified clay

concrete

mild steel cement lined

ductile iron cement lined

cast iron cement lined

asbestos cement

glass reinforced piping

structures, including:

meter pits

maintenance holes, chambers, traps or pits

valve chambers

regulators

erosion barriers

thrust blocks

pumping stations.

Equipment and tools may include:

basic hand and power tools

electronic monitoring and metering systems

recording systems

on- and off-road vehicles

communication equipment

computerised equipment

CCTV

pipe and cable detection equipment

leak detection equipment

motorised equipment

portable pumps

communication equipment

breathing apparatus

gas detection equipment

rescue equipment

appropriate personal protective equipment.

Flow control may include:

admission of trade waste

odours

infiltration and exfiltration

electronic and manual controlling systems

pumping systems, including:

centrifugal

positive displacement

valving systems, including:

sluice

gate

non-return

blade

metering systems, including:

bubbler tube

ultrasonic

magnetic meter.

Fittings may include:

sluices

valves

scours

main taps

jointing systems for pipe types, e.g. gibault

tapping bands

tension bands

solvent cement joints

compression ring joints

bolted flanges

electrofusion

butt welding

backflow prevention devices

cathodic protection.

Legislative and organisational requirements may include:

relevant federal and state or territory legislation and regulations

codes of practice, associated standards and guidance material

documented organisational policies, manuals and induction programs

relevant community planning and development agreements, such as land care agreements.