Unit of competency
Modification History
Release 1. Supersedes and is equivalent to PMAOPS512B Determine mass transfer loads
Application
This unit of competency covers the skills and knowledge required to determine mass transfer loads and flow rates. 'Flow rate' and similar terms refer to the flow rate in terms of kg/h, or kg/batch or similar conceptual flows.
This unit of competency applies to activities which aim to resolve identified plant or process problems, such as improving materials efficiency or specification of new or modified equipment.
This unit of competency applies to any mass transfer mode, including
- mass flow
- density variations with changes in temperature (and pressure where appropriate)
- simple (physical) mixing
- simple (physical) separation
- changes in component mass flow rates due to chemical reaction (including mixing and separation using chemical reaction).
This unit of competency applies to senior technicians or those in similar roles who are required to calculate mass transfer and change in mass contained for a plant item/plant area in order to determine mass transfer efficiency or losses from/gains to the system. It may require the determination of the yield from a chemical reaction. This may be done as a step to improve efficiency, for plant/process design/improvement or other reasons.
No licensing, legislative or certification requirements apply to this unit at the time of publication.
Pre-requisite Unit
Nil
Competency Field
Operations
Unit Sector
Elements and Performance Criteria
Elements describe the essential outcomes. |
Performance criteria describe the performance needed to demonstrate achievement of the element. |
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1 |
Prepare for mass balance |
1.1 |
Identify purpose of mass balance |
1.2 |
Determine possible boundary for analysis |
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1.3 |
Identify plant and mass sources and sinks within boundary |
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2 |
Calculate mass flow rates of streams |
2.1 |
Calculate mass flow rate of plant streams from volumetric data, correcting for changes in density |
2.2 |
Calculate mass flow rate of individual components of plant streams from their concentrations |
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2.3 |
Calculate mass accumulation (+ or -) within a plant item |
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3 |
Calculate mass change due to a chemical reaction |
3.1 |
Determine yield from reaction of all significant products |
3.2 |
Determine mass output of all significant products arising from the reaction for specified reactant inputs |
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4 |
Conduct mass balance over process components |
4.1 |
Determine desired boundaries for mass balance calculation |
4.2 |
Determine possible sources of data required from the plant |
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4.3 |
Match and adjust sources of data to desired boundary for mass balance |
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4.4 |
Determine overall mass balance |
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4.5 |
Determine mass balance for each significant component/ reactant and product |
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4.6 |
Interpret results to meet purpose of the mass balance |
Foundation Skills
This section describes those language, literacy, numeracy and employment skills that are essential to performance.
Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.
Range of Conditions
This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. |
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Regulatory framework |
The latest version of all legislation, regulations, industry codes of practice and Australian/international standards, or the version specified by the local regulatory authority, must be used, and include one or more of the following:
All operations to which this unit applies are subject to stringent health, safety and environment (HSE) requirements, which may be imposed through state/territory or federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and HSE requirements, the HSE requirements take precedence. |
Procedures |
All operations must be performed in accordance with relevant procedures. Procedures are written, verbal, visual, computer-based or in some other form, include one or more of the following:
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Unit Mapping Information
Release 1. Supersedes and is equivalent to PMAOPS512B Determine mass transfer loads
Links
Companion Volume implementation guides are found in VETNet - https://vetnet.gov.au/Pages/TrainingDocs.aspx?q=9fc2cf53-e570-4e9f-ad6a-b228ffdb6875