Assessors Guide to RPL – Water Operations NWP07
Unit summary
NWP268B Monitor, operate and report chlorine disinfection systems
Interview
(Key knowledge and
Question Bank reference)
Demonstration/
observation
Documentary
evidence
(Task number)
(Document number)
Element
Performance Criteria
Question
number
Key
Knowledge
1. Plan and prepare
for work.
1.1
Determine work requirements according to legislative and
organisational requirements.
1,2,3
K1K2,K3,
K4
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.
2,4,5,6,
7
K4,K5,K6
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.
3,4,7
K2,K4,K6
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.
K5,K6
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.
1 Version no Date
Document name
file path
Author
6,7
Assessors Guide to RPL – Water Operations NWP07
Evidence Documents
Candidate’s name
NWP268B Monitor, operate and report chlorine disinfection systems
Qualification
Date of
submission
Tasks relevant to the unit
Task
numbers
(chosen by
assessor)
Doc
number
SATISFACTORY
Assessor’s comment
Y
N
This shows evidence related to:
The document is:
(relating to documents noted in or relevant
to this unit)
(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:
..............................................................................................
2 Version no Date
Document name
file path
Author
/
Assessors Guide to RPL – Water Operations NWP07
Summary of Competency Conversation
Unit code and name
NWP268B Monitor, operate and report chlorine disinfection systems
Candidate’s name
Element
Performance
Criteria
Question
Numbers
Y
N
Assessor’s comments
(drawn from
question bank)
1.1, 1.2, 1.3
1
2
2.1, 2.2, 2.3,
2.4, 2.5
3.1, 3.2, 3.3
3
4.1, 4.2
4
Additional
questions
posed by
assessor if
required.
(relating to
key
knowledge
noted in or
relevant to
this unit)
The participant’s overall responses to the questions was
SATISFACTORY
Feedback to participant
Participant’s signature & date
Observers signature & date
3 Version no Date
Document name
file path
Author
NOT
SATISFACTORY
Assessors Guide to RPL – Water Operations NWP07
Key Knowledge, Question Bank, Tasks and Documentation Unit NWP268B
Key Knowledge (The Assessor may choose to
develop additional questions for this unit assisted
from Key Knowledge points noted below)
Question Bank
Exemplar of Responses
1
Describe the components of a chlorine dosing system
2
What determines prescibed treatment levels
3
What routine maintenance is done.
4
What safety measures are taken in a chlorine dosing
plant
5
What tests are done to monitor treatment efficiency
6
What adjustments can be made on results of test
results
7
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, ammonia (chloramination plant), evacuation alert
system
Drinking water-ADWG, wastewater-SOP”s and licence
discharge limits or reuse requirements
Plant is always kept clean by washing down and cleaning
spills, alarms are tested daily, and cylinder changeover is
regular and recorded, leak detection with ammonia is done
Use of personal protection equipment, gloves, face mask,
SCBA,c lean tools and equipment, alarm tests, leak testing,
Bunding of bulk corrosive liquids, safe disposal of empty
containers, storage complies with environmental limits.
Plant mechanical and electrical isolations.
Samples are taken and tested for pH, chlorine residual and
microbiological content and results logged and compared to
operational limits
Dosing limits can be recalculated, dosing pump controls of
speed or stoke can be refined, flow rates can be 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.
(1) Components of chlorine dosing
equipment
K
(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) Reporting processes for test
results and plant performance
Tasks
1
2
Documentation
Show and explain plant report initiated by candidate
1
Show and explain lab testing results performed by candidate
4 Version no Date
Document name
2
file path
Supervisor’s report on candidate
Relevant PD report on candidate
Author
Assessors Guide to RPL – Water Operations NWP07
5 Version no Date
Document name
file path
Author