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: |
Inspect, test and maintain 3-kV DC high-speed circuit breaker(HSCB) in traction sub-stations |
SAQA US ID | UNIT STANDARD TITLE | |||
259195 | Inspect, test and maintain 3-kV DC high-speed circuit breaker(HSCB) in traction sub-stations | |||
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 | 8 |
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 |
A learner credited with this unit standard will be able to inspect, test and maintain 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations in an electrical environment as well as ensuring the continuity of power supply in the Rail Sector. |
LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING |
UNIT STANDARD RANGE |
The range of this unit standard may be limited to carrying out diagnostic testing and applying preventative maintenance and replacement repairs where necessary on:
|
Specific Outcomes and Assessment Criteria: |
SPECIFIC OUTCOME 1 |
Communicate clearly and concisely without misunderstanding with relevant role players and complete relevant documentation. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Relevant documentation is completed correctly. |
ASSESSMENT CRITERION RANGE |
Documentation can include but is not limited to, company specific orders, company specific documentation, time sheets, etc. |
ASSESSMENT CRITERION 2 |
Communications related to inspect, test and maintain 3-kV DC high-speed circuit breaker are carried out effectively. (Electrical control). |
ASSESSMENT CRITERION RANGE |
Communications related to inspect, test and maintain 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations can include but is not limited, 2-way radios, cellular phones, trunk radios, hand-held emergency telephones, etc. |
SPECIFIC OUTCOME 2 |
Plan and prepare for inspection, testing and maintenance on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Inspection, testing and maintenance on on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations are correctly planned and prepared. |
ASSESSMENT CRITERION RANGE |
Planning and preparation of inspection, testing and maintenance on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations can include but is not limited to outage schedules, manufacturer's specifications and requirements, other disciplines, control centres, associated equipment, operating history reports, failure rate, maintenance programs, plant availability, and customer requirements, etc. |
ASSESSMENT CRITERION 2 |
The scope of work and equipment to be maintained is identified according to the job requirement. |
ASSESSMENT CRITERION RANGE |
The scope of work and equipment to be maintain can include but is not limited to associated `check and/or inspection lists`, procedures and job required diagnostic tests and maintenance for 3-kV DC high-speed circuit breakers, etc. |
ASSESSMENT CRITERION 3 |
Equipment, tools, spares, materials are identified and sourced for the required work according to the job requirements. |
ASSESSMENT CRITERION RANGE |
Equipment, tools, spares, materials can include but is not limited to general tools, spares, materials, `inspection sheets`, procedure sheets, relevant lifting equipment, etc. |
ASSESSMENT CRITERION 4 |
Equipment test instruments and specialised tools needed for maintenance are identified and sourced, as per manufacturers manual, work site procedures and standards. |
ASSESSMENT CRITERION RANGE |
Equipment test instruments and specialised tools needed for maintenance can include but is not limited to various test instruments, test equipment, circlip pliers, dynamometer, grease gun, and manufacturer's special tools, etc. |
ASSESSMENT CRITERION 5 |
The inspection, diagnostic testing and maintenance requirements are interpreted, and analysed for determining the performance and quality standards required. |
ASSESSMENT CRITERION RANGE |
The inspection, diagnostic testing and maintenance requirements can include but is not limited to manufacturer's guidelines, industry maintenance standards, worksite procedures, guidelines, standards, etc. |
ASSESSMENT CRITERION 6 |
3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations identified and manufacturer's manual and company specific guidelines and standards obtained to check scope of work and requirements. |
ASSESSMENT CRITERION RANGE |
3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations manufacturer's manuals can include but is not limited to manufacturer`s guidelines, industry maintenance standards, worksite procedures, guidelines, standards, etc. |
SPECIFIC OUTCOME 3 |
Prepare the 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations for inspection, tests and maintenance. |
OUTCOME RANGE |
Electrical Safety Instructions (ESI) and Engineering Instructions (EI):
|
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations is prepared in accordance with the OHSA, Electrical Safety Instructions (ESI) and Engineering Instructions (EI), and as per job card standards, worksite procedures. |
ASSESSMENT CRITERION RANGE |
The preparation for safe inspection, testing and maintenance on the high voltage switchgear on distribution network(s) can include but is not limited to Electrical Safety Instructions (ESI), Engineering Instructions (EI) barricading, protective clothing, stored energy, worksite procedures, job card procedure, etc.correctly as per manufacturers specifications and work site standards according to statutory requirements. |
ASSESSMENT CRITERION 2 |
The work party is fully briefed on the equipment to be worked on in terms of safety regulations. |
ASSESSMENT CRITERION RANGE |
The equipment to work in terms of safety regulations can include but is not limited to safe working zones, safety features in place, signed worker`s registers, approved documentations, communication with the work party is clear and unambiguous, etc. |
ASSESSMENT CRITERION 3 |
The environment and personnel are protected according to safety measures which are available as per worksite safety requirements. |
ASSESSMENT CRITERION RANGE |
The safety measures which are available as per work site safety requirements can include but is not limited to cleaning solvent spillage, protective clothing, greases, lubricating oils, safe work clearances, an identified and marked safe work area, etc. |
ASSESSMENT CRITERION 4 |
A test rig is correctly and safely connected to the 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations as per maintenance standard requirements. |
ASSESSMENT CRITERION RANGE |
Additional isolation from other energy sources on the high voltage switchgear on distribution network(s) can include but is not limited to low voltage (LV) supply to the 3-kV DC high-speed circuit breaker (HSCB), etc. |
ASSESSMENT CRITERION 5 |
Obstacles and safety hazards are identified and necessary precautions are taken in accordance with OHSA, Electrical Safety Instructions (ESI), Engineering Instructions (EI), local authority; & electrical regulations to ensure work area is/and remains safe for workers. |
ASSESSMENT CRITERION RANGE |
The obstacles and safety hazards can include but is not limited to minimum safe working clearances to other energized, apparatus or equipment, safe discharges of stored electrical potential (e.g. capacitors), etc. |
ASSESSMENT CRITERION 6 |
The correct equipment, tools, spares, materials are identified, obtained and verified according to the job requirements. |
ASSESSMENT CRITERION RANGE |
The correct equipment, tools, spares and materials can include but is not limited to general tools, spares, grease guns, materials, `inspection sheets`, procedure sheets, relevant lifting equipment, etc. |
ASSESSMENT CRITERION 7 |
Equipment, test instruments, and special tools needed for maintenance is identified, obtained and verified for functionality and safety prior to maintenance task being carried out. |
ASSESSMENT CRITERION RANGE |
The correct test instruments, specialised tools needed for maintenance can include but is not limited to test equipment, circlip pliers, grease gun, manufacturer's special tools, etc. |
ASSESSMENT CRITERION 8 |
Cleaning materials and solvents are obtained and prepared for use as per manufacturer specifications, work site procedure, safety standards, hazardous chemicals procedures and material safety handling procedure data sheets. |
ASSESSMENT CRITERION RANGE |
Cleaning materials and solvents can include but is not limited to electrical cleaning solvents, lubrication greases, asbestos, penetrating oils, electrical contact greases, rags, sand paper, waste material, paint, brushes, etc. |
SPECIFIC OUTCOME 4 |
Carry out inspection and tests on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-station. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations history and operational/maintenance records are scrutinised indicating service needs noted for attention during the routine servicing as per maintenance procedure. |
ASSESSMENT CRITERION RANGE |
The 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations defect history and operational/maintenance records can include but is not limited to fault operations, malfunction, reported problems, mechanism failures, excessive arcing damage, environmental damage (including weather), hi-pot tests, calibration tests, etc. |
ASSESSMENT CRITERION 2 |
The inspections on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations are carried out safely and correctly according to the maintenance check sheets, any damage or defects are identified as per manufacturer's specification, worksite operational standards and settings and company specific specifications. |
ASSESSMENT CRITERION RANGE |
Inspections to identify any damage or defects on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations can include but is not limited to damaged porcelain insulators, corrosion, wear and tare, stress cracks, lack of lubrication, UV damage, vermin proofing, contact pitting, alignment, etc. |
ASSESSMENT CRITERION 3 |
The diagnostic tests are correctly carried out as per manufacture requirements and the results analysed for interpreting the maintenance required. |
ASSESSMENT CRITERION RANGE |
The diagnostic can include but is not limited to tests insulation tests, time travel tests, contact resistance, auxiliary contact tests, motor run time, motor operations and gearing, alarm settings, status indications to control panel, contact pressure, etc. |
ASSESSMENT CRITERION 4 |
Personal protective equipment is used and site specific procedures are adhered to throughout the inspection, testing and maintenance process. |
ASSESSMENT CRITERION RANGE |
Personal protective equipment can include but is not limited to safety overalls, gloves, goggles, safety boots, dust mask, etc. |
ASSESSMENT CRITERION 5 |
The results of the diagnostic tests are correctly recorded to meet the job requirements. |
ASSESSMENT CRITERION RANGE |
Recording of the diagnostic tests can include but is not limited to completing work site checklists, electronic data records, job reports, etc. |
SPECIFIC OUTCOME 5 |
Carry out maintenance on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations. |
OUTCOME RANGE |
Reliable centred maintenance frequencies or manufacturers maintenance schedules or other preventative maintenance frequencies. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Maintaining of 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations consistent with manufacturer`s specifications and job requirements. |
ASSESSMENT CRITERION RANGE |
Maintaining of 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations can include but is not limited to breaker trucks, Arc chute, breaker, control circuits, as per reliability centered maintenance (RCM), maintenance schedules, etc. |
ASSESSMENT CRITERION 2 |
The maintenance on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations is carried out following manufacturer's procedures and worksite instructions. This may include the disassembling or opening of parts of the equipment. |
ASSESSMENT CRITERION RANGE |
The maintenance on 3-kV DC high-speed circuit breaker (HSCB) can include but is not limited to solvent cleaning, visual inspection of components, lubricating, greasing, penetrating oils, cleaning of main and auxiliary contacts, operation adjustments, control and mechanism serviced, manufacturer's procedures, worksite instructions, reliability centered maintenance (RCM), etc. |
ASSESSMENT CRITERION 3 |
All cleaning solvents and materials are used safely and appropriately with the correct personal safety aspects taken into consideration, during maintenance as per manufacturer's specifications and worksite standards. |
ASSESSMENT CRITERION RANGE |
The safe used of solvents and materials can include but is not limited to manufacturer's specifications, worksite standards, etc. |
ASSESSMENT CRITERION 4 |
All tools and equipment are used safely and correctly during maintenance as per manufacturers specifications and worksite standards. |
ASSESSMENT CRITERION RANGE |
Tools and equipment can include but is not limited to general engineering tools, specialised tools, test rig, etc. |
ASSESSMENT CRITERION 5 |
Ensure that all environmental aspects are taken into consideration as per environmental impact studies/management. |
ASSESSMENT CRITERION RANGE |
No defective spares and fastening devices thrown around, cleaning solvent spillage is kept to a minimum, no old or excessive grease spilled on ground. |
SPECIFIC OUTCOME 6 |
Perform function tests and post-maintenance checks on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations. |
OUTCOME RANGE |
Operational tests, visual inspections, check sheets. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Work party is advised of safe work practices when tests and checks are about to start on 3-kV DC high-speed circuit breaker (HSCB) as per OHSA, Electrical Safety Instructions (ESI), Engineering Instructions (EI) and reliability centered maintenance (RCM). |
ASSESSMENT CRITERION RANGE |
Safe work practices when tests and checks are about to start on 3-kV DC high-speed circuit breaker (HSCB) can include but are not limited to OHSA, Electrical Safety Instructions (ESI), Engineering Instructions (EI) and Reliability Centered Maintenance schedules (RCM), etc. |
ASSESSMENT CRITERION 2 |
All the function tests required are completed to manufacturer's standards and worksite standards. |
ASSESSMENT CRITERION RANGE |
Function tests can include but are not limited to insulation resistance tests, minimum operating voltage, trip tests, auxiliary contact tests, insulation tests, motor functional tests, hi-pot tests, calibration tests, run time, operational indicators and alarms, etc. |
ASSESSMENT CRITERION 3 |
All the remote operation tests required are completed to manufacturer's standards and worksite standards. |
ASSESSMENT CRITERION RANGE |
Remote operation tests can include but are not limited to initiating indication from control panel or computer, fault alarms, indicators etc. |
ASSESSMENT CRITERION 4 |
All equipment worked on is inspected and set for return to service as per maintenance procedures. |
ASSESSMENT CRITERION RANGE |
3-kV DC high-speed circuit breaker (HSCB) equipment worked on and set for return to service can include but are not limited to breaker trucks, arc chute, breaker, control circuits, as per reliability centered maintenance (RCM), maintenance schedules, etc. |
SPECIFIC OUTCOME 7 |
Complete all tasks on 3-kV DC high-speed circuit breaker (HSCB) in traction sub-stations. |
OUTCOME RANGE |
Maintenance documentation, inspection sheets, test sheets. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The `as found` and `as left` conditions are recorded analysis and reporting of defects, correct completion of the plant and defect history, including replacement spares fitted. |
ASSESSMENT CRITERION RANGE |
The `as found` and `as left` conditions are recorded can include but are not limited to the plant history as per maintenance policy, quality standards, logbooks, job cards, etc. |
ASSESSMENT CRITERION 2 |
Post maintenance clean up process is completed according to industry standards, environmental requirements and site-specific standards. |
ASSESSMENT CRITERION RANGE |
Post maintenance clean up process can include but are not limited to tools, equipment, oils, greases, lubricants, solvents, etc. |
ASSESSMENT CRITERION 3 |
Waste material is disposed of according to site-specific standards and environmental policies and requirements. |
ASSESSMENT CRITERION RANGE |
Waste material can include but are not limited to solvents, waste, rags, scrap/defective parts, etc. |
ASSESSMENT CRITERION 4 |
All tools and equipment is checked, cleaned and return for safe keeping according to work site house keeping procedures and standards. |
ASSESSMENT CRITERION RANGE |
All tools and equipment can include but are not limited to general hand tools, specialised tools, testing equipment, maintenance equipment. |
ASSESSMENT CRITERION 5 |
Other necessary documentation is completed and submitted to designated personnel, as well as all manuals and guidelines are returned for safe keeping as per work site procedures and standards. |
ASSESSMENT CRITERION RANGE |
The safe keeping of manuals and completion of other necessary documentation can include but are not limited to designated personnel, worksite procedures, company specific instructions, standards, etc. |
UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS |
UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE |
UNIT STANDARD DEVELOPMENTAL OUTCOME |
Learner and societal development:
Learners can understand the importance of: |
UNIT STANDARD LINKAGES |
N/A |
Critical Cross-field Outcomes (CCFO): |
UNIT STANDARD CCFO ORGANISING |
Organise oneself and one's activities responsibly and effectively in the ability to follow instructions, regulations when working alone or in a work team, whilst ensuring the safe execution of work activities. |
UNIT STANDARD CCFO COLLECTING |
Collect, evaluate, organise and critically evaluate information related to inspection, testing and maintenance of high-speed circuit breakers (HSCB). |
UNIT STANDARD CCFO COMMUNICATING |
Learners can communicate effectively with relevant role-players when receiving or giving instructions to fellow workers, and in the recording and reporting of information. |
UNIT STANDARD CCFO SCIENCE |
Use science and technology effectively and critically, showing responsibility towards the environmental and the health of others during inspection, testing and maintenance of high voltage switchgear on distribution network(s) to ensuring that all safety and environmental conditions are considered. |
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 |
Supplementary Information:
This unit standard can be assessed in a workplace environment, or in a training or educational environment if simulated equipment response and examples can be provided, or in a combination of both environments: Legal: Terminology of: 3-kV DC high-speed circuit breaker: Means a device provided for the purpose of supplying, protecting and isolating 3-kV DC overhead track equipment from the source of electrical energy. The following terms and abbreviations relate to this unit standard: Site Specific: Assessment Process: Assessment Methods: 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 two of those detailed above) in order to give the assessor reliable and valid proof of competence and evidence of required attitudes. Values: |
QUALIFICATIONS UTILISING THIS UNIT STANDARD: |
ID | QUALIFICATION TITLE | PRE-2009 NQF LEVEL | NQF LEVEL | STATUS | END DATE | PRIMARY OR DELEGATED QA FUNCTIONARY | |
Elective | 72052 | Further Education and Training Certificate: Electrical Engineering | Level 4 | NQF Level 04 | Passed the End Date - Status was "Reregistered" |
2023-06-30 | As per Learning Programmes recorded against this Qual |
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. | ESKOM GENERATION - PALMIET PUMP STORAGE GRABOUW |
2. | KP ACADEMY (PTY) LTD |
3. | POWER SYSTEMS TRAINING, CAPE TOWN |
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. |