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 corrective preventive maintenance on an electrical railway signal 
SAQA US ID UNIT STANDARD TITLE
116881  Perform corrective preventive maintenance on an electrical railway signal 
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 corrective preventative maintenance on an electrical railway signal according to prescribed corrective tasks, by applying signalling engineering practice. The learner will also be able to identify, prioritise and report any potential failure maintenance tasks. This will ensure the availability of functional electrical railway signals as required, which 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 the relevant statutory requirements related to performing CPM on an electrical railway signal.
  • Knowledge of the company rules and regulations applicable when performing infrastructure maintenance in the vicinity of or near exposed "live" high-voltage overhead track 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.
  • Ability to use engineering hand and power tools.
  • Knowledge and use of electrical measuring instruments.
  • Knowledge of and ability to assemble, wire and install an electrical railway signal.
  • Knowledge of and ability to perform RPM on an electrical railway signal 

  • 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 specific time.
    3. At a field site (might or might not include overhead traction equipment).
    4. Under simulated or actual operational conditions.

    When overhead traction equipment is present, the learner must have a valid certificate related to high-voltage equipment, which certifies the learner to work under specific conditions and within a specified area.

    This standard includes CPM on the following electrical railway signals, e.g:
  • Single-position light shunt signal
  • Two-position light shunt signal
  • Running-shunt signal
  • Three-aspect signal
  • Multi-aspect signal
  • Searchlight signal
  • Route/direction indicator
  • Gantry signal

    This standard excludes:
  • Mechanical railway signals
  • Routine preventive maintenance
  • Advanced fault-finding 

  • Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Plan and procure the resources required to perform corrective preventive maintenance (CPM) tasks on an electrical railway signal safely and correctly. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Job order is interpreted to establish the relevant resources required to perform CPM tasks on an electrical railway signal. 

    ASSESSMENT CRITERION 2 
    The correct plans and/or diagrams for the CPM of the electrical railway signal are utilised. 

    ASSESSMENT CRITERION 3 
    The correct resource requirements are determined and obtained to perform CPM tasks on an electrical railway signal. 

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

    SPECIFIC OUTCOME 2 
    Perform corrective preventive maintenance (CPM) tasks on an electrical railway signal. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Tasks are completed timeously, safely and according to signalling engineering practice. 

    ASSESSMENT CRITERION 2 
    Tasks are correctly prioritised and planned. 

    ASSESSMENT CRITERION 3 
    The correct repair techniques are used, by applying signal-engineering practice. 

    ASSESSMENT CRITERION 4 
    The relevant safe working procedures are adhered to. 

    ASSESSMENT CRITERION 5 
    Company-specific specifications and instructions are adhered to. 

    ASSESSMENT CRITERION 6 
    The preparation and execution of CPM tasks are supervised effectively when applicable. 

    SPECIFIC OUTCOME 3 
    Perform relevant tests to verify the correct operation of the repaired equipment and re-instate the electrical railway signal. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The repaired electrical signal is tested and proved to be functionally correct. 

    ASSESSMENT CRITERION 2 
    The correct testing procedures are applied to an electrical railway signal and any other potentially affected equipment. 

    ASSESSMENT CRITERION 3 
    Deviations from standards are correctly identified, prioritised and rectified. 

    ASSESSMENT CRITERION 4 
    Unforeseen circumstances related to the CPM process are addressed effectively. 

    ASSESSMENT CRITERION 5 
    Documentation relevant to the testing procedure is completed correctly. 

    ASSESSMENT CRITERION 6 
    Re-instatement of the signal is done as per company-specific procedures, policies and instructions. 

    SPECIFIC OUTCOME 4 
    Communicate with control and/or relevant role players before, during and on completion of the CPM process. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Relevant documentation related to the CPM tasks performed on the electrical railway signal is completed according to procedures, policies and instructions. 

    ASSESSMENT CRITERION 2 
    Instructions related to the CPM tasks on an electrical railway signal are communicated clearly and concisely to subordinates. 

    ASSESSMENT CRITERION 3 
    The CPM process of an electrical railway signal 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 
    The 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 corrective preventative maintenance on an electrical signal:
    1. Planning and procurement
    2. Communication
    3. Station layout plans
    4. Plans, circuit diagrams and symbols
    5. Various types and functions of electrical signals
    6. Identification, purpose, function and operation of parts and components of electrical signals
    7. Function of the specific signal in the signalling installation
    8. Impact of signal failures on operational efficiency
    9. Fitting methods
    10. Repair Techniques applicable to the CPM task
    11. Relevant Tests & Documentation applicable to the CPM task
    12. CPM Processes related to the maintenance tasks on a track circuit
    13. Installation specifications
    14. Identification & handling of materials
    15. Restoration of site
    16. 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
  • The corrective preventative maintenance process on an electrical railway signal
  • Operational changes relating to the corrective preventative maintenance on an electrical railway signal
  • Availability and competence of assisting personnel 

  • UNIT STANDARD CCFO WORKING 
    Team work
    Learners can work effectively in teams when:
  • Implementing safe working procedures
  • Performing corrective preventative maintenance on an electrical railway signal
  • Restoring the site
  • Re-instating the electrical signal
  • Using lifting equipment 

  • 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 

  • UNIT STANDARD CCFO COLLECTING 
    Information evaluation
    Learners can interpret and evaluate the contents of:
  • A job order
  • A station layout plan
  • Electrical circuit diagrams and signal symbols
  • Corrective preventative maintenance procedures 

  • UNIT STANDARD CCFO COMMUNICATING 
    Communication
    Learners can communicate effectively with relevant role-players related to the corrective preventative maintenance on an electric railway signal. 

    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 electrical railway signal 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.
    Sub-standard refers to the deviation from specifications and/or standards.
    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
    Logbook refers to evidence of training and job performance.
    Lifting equipment refers to block & tackle and rope.
    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.
    Re-instatement refers to the certification that the equipment is restored back to its original operational state according to specifications.

    Certification

    The learner will be certified as competent when fundamental CPM was successfully performed on at least one from each of the following categories of electrical railway signals:
  • Shunt signals
  • Running signals
  • Route/direction indicators

    Note: Proof of competence must include an on-site assessment of CPM task execution under operational conditions.

    Credits

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

    Activity - Hours

    Theory - 16
    Practical - 22
    Self directed learning - 6
    On-the-job learning - 4
    Assessment - 6
    Total - 54
    Credits achieved: 5 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  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.