RPL UNIT TOOL
NWP07 Water Training Package
NWP268B Monitor, operate and report chlorine disinfection systems
This section assists the assessor in reviewing the competency conversation.
Do NOT give this section to the candidate.
This section is to be used by the assessor to complete a skills assessment for a unit of competency.
The purpose of a competency conversation is to gather specific information from a candidate to assist with
a skills recognition decision. You may not need to ask all the questions that are provided here. If a
candidate has already provided sufficient evidence to demonstrate competency for part of a unit, then use
the questions to gain information about aspects of the unit of competency that have not already been
covered
The questions provided here are a guide; feel free to develop your own or add follow-up questions to gain
the information that you need to make a skills recognition decision.
This section contains the following:
1. Unit summary
Elements and performance criteria are linked to questions, demonstration/observation tasks and
documentary evidence from previous self-evaluation.
2. Competency Conversation Guide, Question Bank, Tasks and Documentation
This part has been developed by the industry to supplement the more detailed Required Skills and
Knowledge that must be addressed for each unit of competency. It includes questions that are
referred to in the Unit Summary, with possible responses. There is also a list of tasks relevant to the
unit and examples of relevant documents the candidate may provide.
3. Evidence Documents
4. Summary of Competency Conversation
This is where you summarise the outcomes of the competency conversation, indicating which
responses were satisfactory and adding any additional comments.
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Unit summary
Interview
NWP268B Monitor, operate and report chlorine disinfection systems
(Competency Conversation
Guide and Question Bank
reference)
Demonstration
/
observation(Ta
Documentary
evidence
(Document number)
sk number)
Element
Performance Criteria
Question
number
Competency
Conversation
Guide (CCG)
1. Plan and prepare
for work.
1.1
Determine work requirements according to legislative and
organisational requirements.
1,2,3
CCG1,2,3,4
1,2
1,2
1.2
Select and check equipment required to meet safety requirements of task
and site.
1.3
Select, fit and use personal protective equipment.
2.1
Monitor chlorine disinfection systems according to agreed schedule and
procedures.
2,3,4,5,
6
CCG 4,5,6
1,2
1,2
2.2
Collect process samples and conduct standard tests.
2.3
Maintain and monitor relevant OHS requirements.
2.4
Collect and report process data according to organisational and
disinfection system requirements.
2.5
Make system adjustments as required to maintain effectiveness of
chlorine disinfection.
3.1
Handle, use and store chemicals according to environmental and
organisational requirements.
3,5,6
CCG 2,4,6
1,2
1,2
3.2
Prepare chemical dosing according to system specifications and
organisational requirements and apply using appropriate chlorine dosing
equipment.
3.3
Maintain information related to chlorine supply and usage according to
statutory requirements.
4.1
Compile records from plant and system data to meet organisational
requirements.
CCG 5,6
1,2
1,2
4.2
Report observations outside defined parameters for further action.
2. Monitor systems
performance.
3. Prepare and
apply chemical
dosing.
4. Complete
documentation.
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Competency Conversation, Question Bank, Tasks and Documentation Unit NWP268B
Competency Conversation Guide
(Industry has developed this guide to
supplement the more detailed Required Skills
and Knowledge that must be addressed for
each unit)
Question Bank
(The Assessor may choose to develop additional questions
assisted by the Required Skills and Knowledge listed for
each unit)
Exemplarof Responses
1
Describe the components of a chlorine dosing system
2
What determines prescribed chlorine residual levels
3
What safety measures are taken in a chlorine dosing
plant
4
What tests are done to monitor treatment efficiency
5
What adjustments can be made depending on test
results
What system data would be recorded and reported
Chlorine gas cylinders, calcium hypochlorite, sodium
hypochlorite, gas dosing unit , mixing unit, pH monitor,
chlorine residual monitor, cylinder bay, leak detectors,
alarms, evacuation alert system
Drinking water-ADWG, wastewater-SOP”s, critical control
points, and licence discharge limits or reuse requirements
Use of personal protection equipment, gloves, face mask,
SCBA, , alarm tests, leak testing, Bunding of bulk corrosive
liquids, safety showers, safe disposal of empty containers,
storage complies with OHS, environmental & Hazardous
Chemical requirements. Plant mechanical and electrical
isolations.
Samples are taken and tested for microbiological content,
chlorine residual and pH.
Dosages can be recalculated and feed rates altered. All
adjustments are logged and reported.
On-line monitors store data and can be down loaded, all test
results are recorded and any retesting is also recorded, any
parameters outside operational limits are recorded and
flagged as attention required. Results logged for
compliance with HACCP plan and CCP limits
(1) Components of chlorine dosing
equipment
(2) Prescribed treatment limits
(3) Trouble-shooting and cleaning
of chlorine dosing equipment
(4) Personal safety and equipment
protection
(5) Sampling and testing for
microbiological content
6
(6) Reporting processes for test
results and plant performance
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Tasks
Documentation
Candidates may not be required to complete all tasks. The Assessor is to select tasks after
considering available evidence collected through previous phases and according to the context
and needs of each candidate.
1
2
3
4
Perform chlorine residual measurement
Calculate chlorine feed rate
1
2
Supervisor’s report on candidate
Relevant PD report on candidate
Demonstrate how to change chlorine feed rate/ dosage
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Evidence Documents
Candidate’s name
Qualification
Date of
submission
Tasks relevant to the unit
Task
numbers
(chosen by
assessor)
Doc
number
SATISFACTORY
Assessor’s comment
Y
N
The document is:
(relating to documents noted in or relevant
to this unit)
This shows evidence related to:
(Add which part of the unit(s) this evidence relates to)
Assessor will provide further information here or refer to the
assessment mapping tool.
All documents listed above have been sighted and authenticity confirmed on this date
/
Assessor’s name:
..............................................................................................
Assessor’s signature:
..............................................................................................
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Summary of Competency Conversation
Unit code and
Unit name
Candidate’s name
(Element
numbers
related to
this unit)
(Refer to
unit
question
bank)
Page 1 of ______
(The Assessor may choose to
develop additional questions for
this unit assisted from Key
Knowledge points)
Question
Element Number Assessor’s Question
Satisfactory
(Refer to this units Unit Summary and Exemplar or
Responses for additional information)
Yes
No
Assessor’s Comments
1
2
3
4
5
The participant’s overall responses to the questions was
SATISFACTORY
NOT SATISFACTORY
Feedback to participant
Participant’s signature
Observers signature & date
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Date
Date
NWP268B
30/10/2013