SAQA All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.
SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Perform non-destructive tests on metal parts and components 
SAQA US ID UNIT STANDARD TITLE
13260  Perform non-destructive tests on metal parts and components 
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" 
2018-07-01  2023-06-30  SAQA 06120/18 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2024-06-30   2027-06-30  

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 does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
The skills, values and knowledge reflected in this unit standard are required by people in field of engineering.

The learning outcomes in this unit standard also contribute to the exit level outcomes required for various NQF level 3 engineering qualifications.

Qualifying learners are able to use non-destructive methods to test metal parts and components for surface defects.

The tests used are dye penetration, magnetic particle inspection and ultrasonic testing. 

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 materials and testing within the field of engineering.

The credits allocated to this unit standard assume that a learners has already learned to identify engineering metals, their characteristics and applications and common metal tests and treatments used in engineering. 

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

Specific Outcomes and Assessment Criteria: 

SPECIFIC OUTCOME 1 
Receive samples and check against documentation. 

ASSESSMENT CRITERIA
 

ASSESSMENT CRITERION 1 
1. Tests selected meet job requirements. 
ASSESSMENT CRITERION NOTES 
Indicators:

1. Test equipment selected and prepared is relevant to task requirements
2. Component parts prepared in accordance with test requirements
3. Test procedures are adhered to
4. Worksite procedures are adhered to
5. Problems are communicated to appropriate personnel
6. A clean and tidy work environment is maintained
7. Work is carried out in a safe manner

Understanding confirmed:

Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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. Tests are completed. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 3 
    3. Records of test results and method used are available Predictions are formulated. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 
    Complete surface checking of component using the hand spray dye penetrant method. 
    OUTCOME NOTES 
  • Identify areas of component for checking
  • Clean parts to be surface tested
  • Spray parts with dye penetrant
  • Remove dye penetrant with penetrant remover and apply developer
  • Identify and mark faults and cracks
  • Record test results 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Tests selected meet job requirements. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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. Tests are completed. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 3 
    3. Records of test results and method used are available Predictions are formulated. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 
    Carry out testing using ultrasonic methods. 
    OUTCOME NOTES 
  • Identify parts for testing
  • Test parts
  • Identify faulty parts
  • Interpret and record test results 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Tests selected meet job requirements. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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. Tests are completed. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 3 
    3. Records of test results and method used are available Predictions are formulated.

    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 
    Test parts for surface defects using magnetic particle inspection. 
    OUTCOME NOTES 
  • Identify parts to be tested for defects
  • Move parts to a dark area
  • Apply magnetic field to parts
  • Apply magnetic ink
  • Inspect parts under ultra violet light to identify defects
  • Mark defect areas 

  • ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Tests selected meet job requirements. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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. Tests are completed. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 3 
    3. Records of test results and method used are available Predictions are formulated. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 
    Recognise and report problems, changes and/or malfunctions while working. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Tests selected meet job requirements. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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. Tests are completed. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 3 
    3. Records of test results and method used are available Predictions are formulated. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 
    Work safely with due care for self, fellow workers, equipment, materials and the environment. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    1. Tests selected meet job requirements. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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. Tests are completed. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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 3 
    3. Records of test results and method used are available Predictions are formulated. 
    ASSESSMENT CRITERION NOTES 
    Indicators:

    1. Test equipment selected and prepared is relevant to task requirements
    2. Component parts prepared in accordance with test requirements
    3. Test procedures are adhered to
    4. Worksite procedures are adhered to
    5. Problems are communicated to appropriate personnel
    6. A clean and tidy work environment is maintained
    7. Work is carried out in a safe manner

    Understanding confirmed:

    Respond to 'what if' and 'why' questions covering:
  • Testing methods
  • The testing process for each method - sequence, procedures and techniques
  • Test equipment used
  • Applicable theory
  • Reporting and documentation requirements

    Explain and 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:
  • Test equipment

    Attributes, descriptions, characteristics & properties:
  • Testing methods

    Purpose of:
  • Non-destructive testing of metals

    Processes, events, causes and effects, implications:
  • Implications of incorrect recording of test results
  • Implications of incorrect use of testing equipment and not following testing procedures accurately

    Procedures and techniques:
  • Testing
  • Care for testing equipment

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

    Theory: rules, principles, laws:
  • Applicable theory relevant to the non-destructive testing of metals

    Relationships, systems:
  • The relationship between the non-destructive test results and the conformance of a manufactured component to specifications 


  • Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems:
  • Recognise and respond to problems while testing 

  • UNIT STANDARD CCFO ORGANISING 
    Organise and manage myself and my activities:
  • According to procedures, following regular, consistent methodical work patterns 

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

  • UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively:
  • Record and document all activities related to the testing process 

  • UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically:
  • Understand and explain the theory related to the non-destructive testing of metals 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems:
  • The relationship between the non-destructive test results and the conformance of a manufactured component to specifications 

  • REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  23274   National Certificate: Mechanical Engineering: Fitting  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2008-06-25  MERSETA 
    Elective  23255   National Certificate: Mechanical Engineering: Fitting and Machining  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2023-06-30  MERSETA 
    Elective  23278   National Certificate: Mechanical Engineering: Machining  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2008-10-22  Was MERSETA until Last Date for Achievement 
    Elective  91926   National Certificate: Mechanical Engineering: Machining and Tooling  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2023-06-30  As per Learning Programmes recorded against this Qual 
    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 
    Elective  67609   National Certificate: Mechatronics  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2023-06-30  MERSETA 
    Elective  22771   National Certificate: Mechatronics  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2009-07-29  Was MERSETA until Last Date for Achievement 
    Elective  58719   National Certificate: Metals Processing  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2023-06-30  MERSETA 
    Elective  58721   Further Education and Training Certificate: Engineering Fabrication  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered" 
    2023-06-30  As per Learning Programmes recorded against this Qual 
    Elective  59769   Further Education and Training Certificate: Mechanical Engineering: Pipe-Fitting  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered" 
    2023-06-30  As per Learning Programmes recorded against this Qual 
    Elective  22871   National Certificate: Engineering Fabrication (light or heavy)  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered" 
    2007-08-16  MERSETA 


    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.
     
    1. ALLOYS HEAD OFFICE 
    2. ANGLO PLATINUM - ENGINEERING SKILLS TRAINING CENTRE 
    3. COLLIERY TRAINING COLLEGE (PTY) LTD 
    4. KUMBA IRON ORE (SISHEN) 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.