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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Produce components by spark eroding machining operations 
SAQA US ID UNIT STANDARD TITLE
13255  Produce components by spark eroding machining operations 
ORIGINATOR
SGB Manufacturing and Assembly Processes 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 
2007-05-15  2008-10-22  SAQA 0160/05 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2009-10-22   2012-10-22  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard is replaced by: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
258715  Produce components by spark eroding machining operations  Level 3  NQF Level 03  Complete 

PURPOSE OF THE UNIT STANDARD 
The skills, values and knowledge reflected in this unit standard are required by people in the field of engineering machining, with specific reference to the manufacture of tools, jigs, dies and fixtures or plastic injection moulds.

The learning outcomes in this unit standard also contribute to the exit level outcomes required for the National Certificate in Engineering Machining (NQF level 3) and related qualifications.

Qualifying learners can carry out spark eroding machining operations using a range of accessories and tools. The results are checked with precision measuring instruments. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
This unit standard has been designed as part of a progression. It is one of a series of unit standards for tool, jig and die making in the engineering machining skills area.

The credits allocated to this unit standard assume that a learner has already learned to:
  • Produce components by performing engineering milling operations
  • Produce components by performing engineering turning operations 

  • UNIT STANDARD RANGE 
    The scope and level of this unit standard is determined by the ranges as indicated under the specific outcomes.

    The learner should be able to work autonomously with minimal supervision. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Manufacture electrode. 
    OUTCOME NOTES 
  • Interpret drawings and job instructions to determine requirements allowing for final size of cavity to be made
  • Machine electrode 
  • OUTCOME RANGE 
  • Machines and tools used for electrode manufacture include a range of hand and power tools, lathes, milling machines.
  • Materials used in electrodes may include copper and carbon. 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 2 
    Prepare for spark eroding machining process. 
    OUTCOME NOTES 
  • Interpret drawings and job instructions and determine sequence of operations
  • Check materials and tools required are at workstation
  • Calculate electrode surface area
  • Mark out components if required 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 3 
    Prepare spark eroding machine for operation. 
    OUTCOME NOTES 
  • Prepare machine for operation including lubrication, routine maintenance and pre-operational checks
  • Select and install required accessories and work holding fixtures
  • Install electrode
  • Check coolant level
  • Set process parameters 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 4 
    Perform spark eroding operations. 
    OUTCOME NOTES 
  • Start up and shut down machine
  • Monitor machine while in operation, making adjustments to parameters where required
  • Remove component on completion of spark eroding process
  • Clean machine 
  • OUTCOME RANGE 
  • Factors to be considered during set up and machining must include surface finish, metal removal rate, electrode material, electrode wear, current strength, the di-electric and its flushing rate and method.
  • Cleaning of machine includes cleaning and monitoring of filtration system. 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 5 
    Apply quality checks on component. 
    OUTCOME NOTES 
  • Select and prepare appropriate measuring equipment
  • Measure component
  • Report non-conforming components to appropriate personnel 
  • OUTCOME RANGE 
    Measuring instruments include verniers, micrometers and dial gauges. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 6 
    Recognise and report problems, changes and/or malfunctions while operating. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 7 
    Record information on work done. 
    OUTCOME NOTES 
    Document conformance of component to specifications. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • SPECIFIC OUTCOME 8 
    Work safely with care for self, fellow workers, machines, equipment, materials and environment. 
    OUTCOME RANGE 
    Safe working practices include the use of guards, safety switches and appropriate personal protective equipment 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Machined component meets specifications. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 

  • ASSESSMENT CRITERION 2 
    2. Machined component secured. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Electrode manufactured appropriate to job/drawing specifications and material type and safety requirements
    2. Machine is set up to accept work safely and without damage to work piece or machine
    3. Materials are prepared and correctly marked out if required
    4. Materials placed on machine correctly relative to electrode
    5. Process parameters set for required surface finish, metal removal rate and flushing rate with due regard for electrode wear and method of flushing
    6. Machine operating instructions and worksite procedures are adhered to
    7. Adjustments to process parameters during spark eroding process are made quickly and appropriately
    8. Required coolant levels maintained
    9. Machine cleaned to manufacturer's specifications
    10. Safe working practices are adhered to
    11. Components are measured and conformance to specification documented
    12. Problems are reported timeously to appropriate personnel
    13. A clean and tidy work environment is maintained

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • The process of spark eroding - procedures and techniques
  • Machine functions, parts, accessories and set up
  • Electrodes
  • Sequence of operations
  • Process parameters
  • Coolant levels
  • Di-electric flushing rate and method
  • Component specifications
  • Applicable theory
  • Cleaning requirements (filtration system)
  • Quality
  • Materials
  • Safety requirements and hazards
  • Reporting and documentation requirements

    Discuss the implications of not adhering to the sequence of activities and operations as described in the specific outcomes and making decisions inappropriate to the task. 


  • UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    The assessment will be governed by the policies and guidelines of the MERSETA Education and Training Quality Assuror who has jurisdiction over this field of learning. The assessor will (at the very least) be accredited and have a technical qualification in this learning area.

    The learner can be assessed in the language of his/her choice although s/he has to report incidents or conditions to someone else. The learner will be assessed on his/her ability to report in the language commonly used in his/her working environment.

    The learner will be assessed in the workplace but s/he can submit documents, projects, test results and assignments that were not produced in the workplace.

    The learner can be assessed against this unit standard to obtain credits or as part of an integrated assessment for a qualification. 

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Names & functions of:
  • Main parts and functions of spark eroding machine
  • Machine controls
  • Di-electric flushing rate
  • Personal protective equipment

    Attributes, descriptions, characteristics & properties:
  • Electrodes
  • Process parameters
  • Material types
  • Coolant levels
  • Safety hazards

    Purpose of:
  • Material preparation
  • Safety checks

    Processes, events, causes and effects, implications:
  • Implications for surface finish, metal removal rate, electrode wear, flushing rate and method of flushing if machine parameters are varied.
  • Implications of incorrect installation of electrode
  • Implications of component not meeting specifications,
  • Implications and consequences of situations such as, e.g. damaged or faulty equipment, allowing faulty processes to continue, delaying reports about changing conditions

    Procedures and techniques
  • Set up procedures for spark eroding machine
  • Spark eroding operations and procedures
  • Measuring procedures
  • Machine cleaning procedures
  • Recording and reporting procedures

    Regulations, legislation, agreements, policies, standards
  • Applicable safety, health and environmental protection legislation and standards
  • Applicable quality standards and specifications

    Theory: rules, principles, laws
  • Applicable machining theory covering electrodes, current, material properties and the underlying principles of spark erosion
  • Applicable mathematical concepts including geometry, trigonometry and algebra
  • Applicable underlying scientific concepts

    Relationships, systems:
  • The relationship of the electrode to the spark erosion process 


  • Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems:
  • Recognise problems while machining components and respond appropriately 

  • UNIT STANDARD CCFO ORGANISING 
    Organise and manage myself and my activities:
  • Plan sequence of operations based on job requirements and set up machine appropriately 

  • UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information:
  • Collect sensory and numeric information from the process and the machined component
  • Classify the information and identify deviations from the norm 

  • UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively:
  • Record outputs, incidents, measurements
  • Report incidents and conditions
  • Respond to questions or requests for more details 

  • UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically:
  • Understand and explain machining theory and mathematical and scientific concepts underpinning the spark erosion operation 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems:
  • The relationship of the electrode to the spark erosion operation 

  • UNIT STANDARD NOTES 
    This unit standard has been replaced by unit standard 258715, which is "Produce components by spark eroding machining operations", Level 3, 8 credits. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  23280   National Certificate: Mechanical Engineering: Tooling Manufacture  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2008-10-22  Was MERSETA until Last Date for Achievement 


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 



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