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: 

Perform fault-finding and repairs on railway signalling power supply equipment 
SAQA US ID UNIT STANDARD TITLE
116885  Perform fault-finding and repairs on railway signalling power supply equipment 
ORIGINATOR
SGB Electrical Engineering & Construction 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Electrical Infrastructure Construction 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
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 
A learner credited with this unit standard will be able to perform fault-finding and repairs on railway signalling power supply equipment by applying signalling engineering practice. This will restore the functionality of the railway signalling power supply equipment, which will contribute in part to a reliable railway signalling system, safe and efficient train operations and effective rail transportation. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Communication NQF L3
  • Mathematics NQF L3
  • Knowledge of the principles of electricity.
  • Knowledge of electro-mechanical principles.
  • Knowledge of basic electronic theory and components.
  • Knowledge of the relevant statutory requirements related to performing faultfinding and repairs on railway signalling power supply equipment.
  • Apply train working rules as applicable to railway signalling maintenance personnel when working on or in the vicinity of operational railway lines.
  • Principles of train operating methods and railway signalling.
  • The ability and knowledge to use engineering hand and power tools.
  • Knowledge and ability to use electrical measuring instruments.
  • Knowledge of and ability to assemble, wire and install parts and components of railway signalling power supply equipment.
  • Knowledge of and ability to perform RPM on railway signalling power supply equipment.
  • Knowledge of and ability to perform CPM on railway signalling power supply equipment. 

  • UNIT STANDARD RANGE 
    The credit value assigned to this unit standard is appropriate because performance must be carried out:
    1. In a controlled environment.
    2. Within a specified time depending on the nature of the fault and repair.
    3. At a field site (might or might not include overhead traction equipment).
    4. Under simulated or actual operational conditions.

    Fault-finding in this unit standard is limited to the type of fault that can be cleared by performing minor adjustments, settings and repairs, or replacing field replaceable or exchangeable components and units.

    Repair in this unit standard is limited to minor adjustments, settings, or replacing field replaceable or exchangeable components and units.

    This standard includes the fault-finding and repair tasks on the following types of power supply equipment:
  • Automatic battery chargers/rectifier
  • Inverters
  • Power switching panel and related external power distribution equipment
  • Commercial type UPS as used in railway signalling
  • DC to DC converters

    This standard excludes:
  • Routine preventive maintenance
  • Corrective preventive maintenance
  • Fault-finding and repairs on batteries 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Plan and procure the resources required to perform fault-finding and repair tasks on railway signalling power supply equipment safely and according to signalling engineering practice. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Job order is interpreted to establish the relevant resources required to perform fault-finding and repair tasks on railway signalling power supply equipment. 

    ASSESSMENT CRITERION 2 
    The correct plans and/or diagrams for fault-finding and repair are utilised. 

    ASSESSMENT CRITERION 3 
    The correct resource requirements are determined and obtained to perform fault-finding and repair tasks on railway signalling power supply equipment. 

    ASSESSMENT CRITERION 4 
    The resources are verified against material specifications and sub-standards rectified. 

    SPECIFIC OUTCOME 2 
    Diagnose and locate a fault on railway signalling power supply equipment. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Information relevant to the fault-finding task is gathered by:
  • Observing and/or obtaining control and display panel indications
  • Reading and interpreting circuit diagrams, plans and manuals
  • Measuring and testing relevant equipment
  • Visual observation of the condition, status and operation of equipment
  • Referring to previous equipment repair/maintenance records
  • Communication with relevant role players 

  • ASSESSMENT CRITERION 2 
    The gathered information is logically interpreted and analysed. 

    ASSESSMENT CRITERION 3 
    The correct diagnostic techniques are used, by applying signalling engineering practice. 

    ASSESSMENT CRITERION 4 
    The fault is timeously and correctly located. 

    ASSESSMENT CRITERION 5 
    The relevant safe working procedures are adhered to. 

    ASSESSMENT CRITERION 6 
    Company-specific specifications and instructions are adhered to. 

    ASSESSMENT CRITERION 7 
    Unforeseen circumstances related to the fault diagnosing and location process are effectively addressed 

    SPECIFIC OUTCOME 3 
    Perform relevant functional tests to verify the correct operation of the repaired equipment and re-instate the railway signalling power supply equipment. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The correct functional testing procedures are applied to prove that the repaired railway signalling power supply equipment and any other potentially affected equipment is functioning according to company-specific procedures, policies and instructions. 

    ASSESSMENT CRITERION 2 
    Deviations from standards are correctly identified, prioritised and rectified. 

    ASSESSMENT CRITERION 3 
    Unforeseen circumstances related to the functional testing and re-instatement of the railway signalling power supply equipment is addressed effectively. 

    ASSESSMENT CRITERION 4 
    Re-instatement of the railway signalling power supply equipment is done as per company-specific procedures, policies and instructions. 

    ASSESSMENT CRITERION 5 
    The relevant safe working procedures are adhered to. 

    ASSESSMENT CRITERION 6 
    Company-specific specifications and instructions are adhered to. 

    SPECIFIC OUTCOME 4 
    Communicate with control and/or relevant role players before, during and on completion of the fault-finding and repair process and complete all applicable documentation. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Relevant documentation related to the fault-finding and repair process on the railway signalling power supply equipment is completed according to procedures, policies and instructions. 

    ASSESSMENT CRITERION 2 
    Instructions related to the fault-finding and repair process on railway signalling power supply equipment are communicated clearly and concisely to subordinates. 

    ASSESSMENT CRITERION 3 
    The fault-finding and repair process of railway signalling power supply equipment is communicated and co-ordinated with all relevant role players. 

    ASSESSMENT CRITERION 4 
    Specific communication protocol with relevant role players is adhered to when applicable (e.g. Operating and Protection Personnel). 

    ASSESSMENT CRITERION 5 
    Relevant communication media is used according to company policies and instructions. 

    ASSESSMENT CRITERION 6 
    Communication is clear and concise. 

    SPECIFIC OUTCOME 5 
    Restore the site as per company-specific procedures, policies and instructions. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Site is restored as per company-specific procedures, policies and instructions. 

    ASSESSMENT CRITERION 2 
    All equipment housing lids, doors, covers, locks, etc. are replaced and secured as per company-specific procedures policies and instructions. 

    ASSESSMENT CRITERION 3 
    Hazardous and waste material is safely disposed of as per company-specific procedures, policies and instructions. 

    ASSESSMENT CRITERION 4 
    Material, equipment and tools are returned for storage or repair as per company-specific procedures, policies and instructions 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    1. An individual wishing to be assessed against this unit standard may apply to an assessment agency, assessor or provider institution that has been accredited by the relevant ETQA.
    2. Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
    3. Any institution offering learning that will enable achievement of this unit standard must be registered and accredited as a provider with the relevant ETQA as prescribed.
    4. Moderation of assessment will be done by the relevant ETQA as prescribed.
    5. Anyone assessing a learner against this unit standard must be certified as competent against this unit standard and registered as an assessor to assess this unit standard. 

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    The learners can understand and explain the following related to the fault-finding and repair procedures on railway signalling power supply equipment:
    1. Planning and procurement
    2. Plans, circuit diagrams and symbols
    3. Various types of railway signalling power supply equipment
    4. Operation of relevant railway signalling power supply equipment
    5. Function of the specific railway signalling power supply equipment in the signalling installation
    6. Impact of railway signalling power supply equipment failure on operational efficiency
    7. Fitting methods
    8. Lifting equipment
    9. Fault-finding and repair procedures
    10. Identification and safe handling of materials
    11. Identification, purpose, function and operation of parts of railway signalling power supply equipment as applicable to the task
    12. Materials required for fault-finding and repair procedures
    13. Restoration of site
    14. Relevant extracts from:
  • OHS Act and regulations
  • Safe working procedures
  • Company specific policies, procedures and instructions 

  • UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Problem-solving
    Learners can solve problems with regard to:
  • The correctness, quantity and quality of material, parts and components
  • The suitability and functionality of equipment and tools
  • Fault-finding and repair procedures on railway signalling power supply equipment 

  • UNIT STANDARD CCFO WORKING 
    Team work
    Learners can work effectively in teams when:
  • Implementing safe working procedures
  • Performing fault-finding and repair procedures 

  • UNIT STANDARD CCFO ORGANISING 
    Self-organisation and self-management
    A learner can organise and manage himself by:
  • Executing the task responsibly
  • Maintaining a high level of discipline
  • Adherence to time frames
  • Adherence to safety and company-specific policies and procedures
  • Controlling and supervising personnel 

  • UNIT STANDARD CCFO COLLECTING 
    Information evaluation
    Learners can interpret and evaluate the contents of:
  • A job order
  • Plans
  • Electrical circuit diagrams and symbols
  • Fault-finding and repair procedures 

  • UNIT STANDARD CCFO COMMUNICATING 
    Communication
    Learners can communicate effectively with relevant role-players related to the fault-finding and repair process. 

    UNIT STANDARD CCFO SCIENCE 
    Use of science and technology
    Learners can use science and technology by using:
  • Test instruments
  • Electric tools
  • Communication media 

  • UNIT STANDARD CCFO DEMONSTRATING 
    Inter-relatedness of systems
    Learners can understand the role of the railway signalling power supply equipment in a railway signalling system. 

    UNIT STANDARD CCFO CONTRIBUTING 
    Learner and societal development
    Learners can understand the importance of:
  • Safety in the workplace as well as in the whole environment
  • Being a team player in the work environment and in society
  • Communicating effectively in the work environment and in society
  • Their responsibility for the safety and well-being of fellow-workers and society at large 

  • UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

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

    UNIT STANDARD NOTES 
    Assessment process:

    1. Assessment methods:
  • Written tests.
  • Practical test.
  • Oral questioning.
  • Observation of practical task execution.
  • Simulation.
  • Role-play/structured classroom discussions and oral tests.
  • Practical verification against specifications.

    These methods must be selected carefully based on the purpose of the assessment (for example, the written method could be used to assess knowledge or on-the-job demonstration for practical competence). The assessment must integrate a number of different methods (no less than three of those detailed above) in order to give the assessor reliable and valid proof of competence and evidence of required attitudes.

    2. The following may be used to supplement the above minimum assessment methods:

    Valid, reliable and authentic evidence (presented as a portfolio of evidence) from past achievements and experience may serve to supplement the assessment of applied competence. The portfolio should include inter alia:
  • Written statements from persons (e.g. current and/or previous employer, colleague, peer, manager, external customers) confirming competence of the learner.
  • Relevant certificates or awards.
  • Previous assessment records.
  • Logbook or register stating evidence of performance.

    Values:

    In addition, the following values should be demonstrated:
  • Safety consciousness
  • Responsibility
  • Integrity
  • Quality consciousness
  • Time consciousness
  • Sobriety
  • Decisiveness

    Supplementary information:

    Terminology

    Job order refers to:
  • Job card
  • Job instruction
    Diagram refers to a drawing or plan.
    Site refers to field location.

    Communication can include, but is not limited to:
  • Personnel structures, e.g. supervisors and subordinates
  • Verification of messages/instructions

    Communication media can include, but is not limited to:
  • 2-way radios
  • Cellular phones
  • Trunk radios
  • Hand-held emergency telephones
  • Hand signals and coloured flags
  • Hand-held lamps
    Overhead traction equipment (OHTE) refers to the high-voltage equipment used to power electric locomotives
    Operational changes refer to changes in circumstances under which the work is performed.

    Certification

    The learner will be certified as competent when fault-finding and repairs was successfully performed on the following:
  • Automatic battery chargers/rectifier
  • Inverter
  • Power switching panel and related external power distribution equipment

    Note: Proof of competence must include an on-site assessment of fault-finding and repair tasks executed under operational conditions.

    Credits

    Total hours required by the learner to achieve the required outcomes:

    Activity - Hours

    Theory - 24
    Practical - 24
    Self-directed learning - 6
    On-the-job learning - 12
    Assessment - 6
    Total - 72
    Credits achieved: 7 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  49067   Further Education and Training Certificate: Railway Signalling: Fault-finding and Repair of Equipment  Level 4  NQF Level 04  Reregistered  2023-06-30  TETA 


    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 



    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.