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Evidence Guide: NWPTRT045 - Assess and improve desalination processes

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!

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NWPTRT045 - Assess and improve desalination processes

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

Assess performance of desalinationprocesses

  1. Review existing process performance data.
  2. Review existing operational processes with reference to manufacturer and plant designer specifications.
  3. Identify the impact of raw water quality on desalination treatment processes.
  4. Review existing fault reports and other relevant plant asset information.
  5. Investigate the operational status of plant components.
  6. Assess the effectiveness of various process control strategies.
Review existing process performance data.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Review existing operational processes with reference to manufacturer and plant designer specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify the impact of raw water quality on desalination treatment processes.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Review existing fault reports and other relevant plant asset information.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate the operational status of plant components.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess the effectiveness of various process control strategies.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Improve performance of desalination process

  1. Identify treatment process conditions for optimising desalination.
  2. Determine plant configuration and revised operational processes for process optimisation.
  3. Plan a trial to test the performance of the determined optimisation options.
Identify treatment process conditions for optimising desalination.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine plant configuration and revised operational processes for process optimisation.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plan a trial to test the performance of the determined optimisation options.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report on system performance and improvement

  1. Report on the current operational status of the water treatment process.
  2. Report on effective treatment processes and associated sampling and testing requirements required to maintain water quality.
  3. Compile a report making recommendations on optimisation options.
Report on the current operational status of the water treatment process.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report on effective treatment processes and associated sampling and testing requirements required to maintain water quality.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Compile a report making recommendations on optimisation options.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess performance of desalinationprocesses

  1. Review existing process performance data.
  2. Review existing operational processes with reference to manufacturer and plant designer specifications.
  3. Identify the impact of raw water quality on desalination treatment processes.
  4. Review existing fault reports and other relevant plant asset information.
  5. Investigate the operational status of plant components.
  6. Assess the effectiveness of various process control strategies.
Review existing process performance data.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Review existing operational processes with reference to manufacturer and plant designer specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify the impact of raw water quality on desalination treatment processes.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Review existing fault reports and other relevant plant asset information.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Investigate the operational status of plant components.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess the effectiveness of various process control strategies.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Improve performance of desalination process

  1. Identify treatment process conditions for optimising desalination.
  2. Determine plant configuration and revised operational processes for process optimisation.
  3. Plan a trial to test the performance of the determined optimisation options.
Identify treatment process conditions for optimising desalination.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine plant configuration and revised operational processes for process optimisation.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Plan a trial to test the performance of the determined optimisation options.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report on system performance and improvement

  1. Report on the current operational status of the water treatment process.
  2. Report on effective treatment processes and associated sampling and testing requirements required to maintain water quality.
  3. Compile a report making recommendations on optimisation options.
Report on the current operational status of the water treatment process.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Report on effective treatment processes and associated sampling and testing requirements required to maintain water quality.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Compile a report making recommendations on optimisation options.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions section.

1. Assess performance of desalinationprocesses

1.1 Review existing process performance data.

1.2 Review existing operational processes with reference to manufacturer and plant designer specifications.

1.3 Identify the impact of raw water quality on desalination treatment processes.

1.4 Review existing fault reports and other relevant plant asset information.

1.5 Investigate the operational status of plant components.

1.6 Assess the effectiveness of various process control strategies.

2. Improve performance of desalination process

2.1 Identify treatment process conditions for optimising desalination.

2.2 Determine plant configuration and revised operational processes for process optimisation.

2.3 Plan a trial to test the performance of the determined optimisation options.

3. Report on system performance and improvement

3.1 Report on the current operational status of the water treatment process.

3.2 Report on effective treatment processes and associated sampling and testing requirements required to maintain water quality.

3.3 Compile a report making recommendations on optimisation options.

Required Skills and Knowledge

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes

Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions section.

1. Assess performance of desalinationprocesses

1.1 Review existing process performance data.

1.2 Review existing operational processes with reference to manufacturer and plant designer specifications.

1.3 Identify the impact of raw water quality on desalination treatment processes.

1.4 Review existing fault reports and other relevant plant asset information.

1.5 Investigate the operational status of plant components.

1.6 Assess the effectiveness of various process control strategies.

2. Improve performance of desalination process

2.1 Identify treatment process conditions for optimising desalination.

2.2 Determine plant configuration and revised operational processes for process optimisation.

2.3 Plan a trial to test the performance of the determined optimisation options.

3. Report on system performance and improvement

3.1 Report on the current operational status of the water treatment process.

3.2 Report on effective treatment processes and associated sampling and testing requirements required to maintain water quality.

3.3 Compile a report making recommendations on optimisation options.

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed in at least one of the desalination processes listed in the Range of conditions. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.

preparing and applying chemical dosing and cleaning

applying calculations to determine log removal values, Langelier saturation index, silt density index, salt passage or permeate flux, as required

evaluating process performance

reviewing existing process performance with reference to historical data, differences in raw water quality and plant configuration

identifying data deficiencies and collecting additional data through appropriate sampling and testing

assessing fault reports and investigating current operational status of processes for water treatment

investigating current and potential chemical addition practices

planning trials to test the performance of the treatment optimisation options for desalination

preparing recommendation reports

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the depth of knowledge demonstrated must be appropriate to the job context of the candidate.

types and characteristics of chemical and microbial contaminants treated through desalination processes

problems for desalination processes caused by chemical and biological contamination

relevant legislation, standards and workplace policies and procedures relating directly to the control and operation of desalination processes

principles of water reuse treatment processes

log removal value concept for desalination

saturation indices used for prediction of scaling formation

silt and/or fouling indices used for prediction of solids or colloidal fouling

properties and modes of action for desalination

types and application of chemicals and chemical cleaning methods for desalination processes

Range Statement

Desalination processes include:

reverse osmosis

electrodialysis reversal (EDR)

nanofiltration