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: 

Overhaul centrifugal pumps 
SAQA US ID UNIT STANDARD TITLE
253376  Overhaul centrifugal pumps 
ORIGINATOR
SGB Generic Manufacturing, Engineering, Technology 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Engineering and Related Design 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 4  NQF Level 04  7 
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 replaces: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
10738  Overhaul a single-stage centrifugal pump  Level 3  NQF Level 03  6   

PURPOSE OF THE UNIT STANDARD 
This unit standard will be useful to people who are required to overhaul centrifugal pumps. People credited with this unit standard are able to:
  • explain the factors critical to overhauling centrifugal pumps.
  • prepare to overhaul centrifugal pumps.
  • overhaul centrifugal pumps.
  • test centrifugal pumps and prepare for operation and/or production.

    The skills, knowledge and understanding demonstrated within this unit standard are essential for social and economic transformation and contribute to the upliftment and economic.

    This unit standard is intended to promote general skills, knowledge and understanding of how to overhaul centrifugal pumps in the following industry sectors:
  • Manufacturing and Engineering (Metals, Plastics, Tyre and Rubber, Electrical Power Generation, Automotive Manufacturing).
  • Chemical and Petrochemical.
  • Mining.
  • Transport (Maritime, Road, Rail and Aviation).
  • Civil Engineering and Construction.
  • Food and Beverages.
  • Other engineering-related industry sectors. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in terms of the following outcomes or areas of learning when starting to learn towards this unit standard:
  • Lift and move loads.
  • Use relevant hand tools.
  • Maintain centrifugal pumps. 
    		•

    UNIT STANDARD RANGE 
    The ranges as indicated under the specific outcomes determine the scope and level of this unit standard.

    However for the purpose of assessment, centrifugal pumps include but are not limited to the following categories and may include:
  • Single stage and multi-stage.
  • Low and high pressure conditions.
  • Horizontal, vertical suction.
  • Radial flow types.
  • Mixed flow types.
  • Axial flow types.

    The learner should be able to:
  • Work autonomously with minimal supervision and according to worksite and manufacturer specifications and occupational safety, health and environmental legislation.
  • Work in a workshop, plant or underground environment with varying levels of light, space and safety risks.

    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Explain the factors critical to overhauling centrifugal pumps. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The explanation of the principle of operation and function of centrifugal pumps is in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The explanation of the importance of overhauling centrifugal pumps shows a clear understanding of the direct consequences to self and the business. 
    ASSESSMENT CRITERION RANGE 
    Direct consequences must include:
  • Injury to persons.
  • Damage to equipment.
  • Loss of production time through breakdowns.
  • Increased costs.
     
    		•

    ASSESSMENT CRITERION 3 
    The explanation lists the possible critical workplace hazards that may be encountered while overhauling centrifugal pumps in a particular context. The explanation also describes the risks associated with and the factors contributing to each workplace hazard. 

    ASSESSMENT CRITERION 4 
    The explanation lists the possible critical work related hazards that may be encountered while overhauling centrifugal pumps in a particular context. The explanation also describes the risks associated with and the factors contributing to each work related hazard. 
    ASSESSMENT CRITERION RANGE 
    Understanding confirmed:

    Respond to `what if` and `why` questions covering:
  • Centrifugal pumps, their characteristics and working principles.
  • The overhauling process, sequence, procedures and techniques.
  • Tools and equipment used.
  • Quality awareness: implications of a centrifugal pump overhaul that do not comply with operational requirements.
  • Applicable centrifugal pump principles of operation.
  • Safety.
  • 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 to overhaul a centrifugal pump. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    Permission is obtained in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The required personal protective equipment is selected, examined and used in a way that is consistent with its purpose, design and specified requirements. Personal protective equipment is used so that the safety of persons and equipment is protected. 

    ASSESSMENT CRITERION 3 
    Tools, material and equipment required are selected, examined and transported in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The workplace is examined in accordance with specified requirements. Hazardous and sub-standard conditions are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 5 
    The pump to be overhauled is identified in accordance with specified requirements. 

    ASSESSMENT CRITERION 6 
    The pump is positioned and secured in accordance with standard best practices. 

    ASSESSMENT CRITERION 7 
    The consequences for health, safety and production of not preparing to overhaul centrifugal pumps in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Consequences must include:
  • Permission.
  • Personal protective equipment.
  • Tools, material and equipment.
  • Workplace examination.
  • Workplace hazards.
  • Identification of the pump to be overhauled.
  • Positioning and securing.
     
    		•

    SPECIFIC OUTCOME 3 
    Overhaul the centrifugal pump. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The required personal protective equipment is used in a way that is consistent with its purpose, design and specified requirements. Personal protective equipment is used to ensure the safety of persons and equipment. 

    ASSESSMENT CRITERION 2 
    The required personal protective equipment is used in a way that is consistent with its purpose, design and specified requirements. Personal protective equipment is used so that the safety of persons and equipment is protected. 

    ASSESSMENT CRITERION 3 
    Work related hazards are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The pump is dismantled in line with specified requirements for sequence and tolerances, and is consistent with accepted best practice. 

    ASSESSMENT CRITERION 5 
    The components are inspected and faulty components are replaced in line with manufacturers specifications accepted best practice. 

    ASSESSMENT CRITERION 6 
    The pump is assembled in line with specified requirements for sequence and tolerances. 

    ASSESSMENT CRITERION 7 
    Interpersonal interaction is positive, consistent with specified requirements, promotes effective teamwork, and avoids dysfunctional conflict. 

    ASSESSMENT CRITERION 8 
    The tools and equipment are used in accordance with manufacturer's design and without injury to self and others. 

    ASSESSMENT CRITERION 9 
    The consequences for health, safety and production of not overhauling centrifugal pumps in line with specified requirements, and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Consequences must include:
  • Personal protective equipment.
  • Work-related hazards.
  • Dismantling.
  • Inspection.
  • Assembling.
  • Interpersonal interaction.
  • Use of tools and equipment.
     
    		•

    SPECIFIC OUTCOME 4 
    Test the pump and prepare for operation and/or production. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    The pump is prepared for testing purposes in accordance with specified requirements. 

    ASSESSMENT CRITERION 2 
    The pump is tested to determine if it is functioning in accordance with specified requirements. 

    ASSESSMENT CRITERION 3 
    Tools, material and equipment selected are dealt with in accordance with specified requirements. 

    ASSESSMENT CRITERION 4 
    The workplace is cleaned and free from hazards in accordance with specified requirements and good housekeeping practices. 

    ASSESSMENT CRITERION 5 
    The report on work performed complies with specified requirements for format, content, accuracy and distribution. The report is delivered within the agreed time. 

    ASSESSMENT CRITERION 6 
    The consequences for health, safety and production of not testing the pump in line with specified requirements and current legislation are explained. 
    ASSESSMENT CRITERION RANGE 
    Consequences must include:
  • Preparation for testing.
  • Priming the pump (Priming methods include but are not limited to ejector method, hand-type lift pump or powered air-pump, foot-valve, Top-discharge method and automatic priming systems (float-control and reserve vacuum tank types).
  • Testing the pump.
  • Tools material and equipment.
  • Good housekeeping.
  • Reporting.
     
    		•


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a leaner against this unit standard must be registered as an assessor with the relevant Education, Training, Quality, Assurance (ETQA) Body, or with ETQA that has a Memorandum of Understanding with relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider with relevant Education, Training, Quality, Assurance (ETQA) Body, or with ETQA that has a Memorandum of Understanding with relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant Education, Training, Quality, Assurance (ETQA) Body, or with ETQA that has a Memorandum of Understanding with relevant ETQA, according to ETQA's policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments, unless ETQA policies specify otherwise.
  • Anyone wishing to be assessed against this unit standard may apply to be assessed by any assessment agency, assessor or provider institution that is accredited by the relevant ETQA. 
    		•

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Names and functions of:
  • Types of centrifugal pumps.
  • Centrifugal pump and components.
  • Tools and equipment used in the centrifugal pump overhaul process.
  • Quality terminology and concepts.

    Attributes, descriptions, characteristics and properties:
  • Typical centrifugal pump faults and defects.
  • End users of centrifugal pump.
  • Centrifugal pump equipment and components.
  • Characteristics of different types of centrifugal pumps.

    Sensory cues:
  • Sensory cues (what I see, hear, smell, feel) utilised for identifying centrifugal pump related defects and non-conformances and the causes thereof.

    Purpose of:
  • Preparing site and equipment for overhaul process.
  • Overhauling centrifugal pumps.
  • Quality checks and procedures.
  • Reporting problems.
  • Identification of wear patterns on components.
  • Verifying pressure relief level.
  • Pressure testing and setting.
  • Sealing and/or locking on completion.

    Processes, events, causes and effects, implications:
  • Implications of non-conformance.
  • Causes of and implications of not relieving pressure.
  • Causes and responses to common problems.
  • Overhaul sequence and process.
  • Implications and consequences of situations such as, e.g., using poor quality, damaged or faulty equipment in the overhaul process, delaying reports about problems in work area.

    Procedures and techniques:
  • Ensuring system is safe.
  • Identifying component defects.
  • Overhauling centrifugal pump components.
  • Pressure testing and setting.
  • Preparing consumables, replacement components/parts for overhaul.
  • Quality checks and procedures.
  • Reporting procedures.

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

    Theory: Rules, principles, laws:
  • Applicable mechanical theory relating to the overhaul of centrifugal pumps, e.g. torque, pressure.
  • Applicable mathematical concepts.

    Relationships, systems:
  • The relationship of centrifugal pump overhaul to the production process. 
    		•

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems and make decisions using critical and creative thinking.

    Note:
  • The ability of the candidate to identify hazards and risks, sub standard conditions, process problems and to rectify these, illustrates his/her capability to solve problems. 
    		•

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as members of a team, group, organisation or community.

    Note:
  • The ability of the candidate to communicate effectively and to maintain optimum productivity illustrates his/her capability to work effectively with others. 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage themselves and their activities responsibly and effectively.

    Note:
  • The ability of the candidate to maintain optimum productivity whilst adhering to safety procedures, illustrates his/her capability to organise and manage themselves and their activities responsibly and effectively. 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information.

    Note:
  • The ability of the candidate to implement corrective actions illustrates his/her capability to collect, organise and critically evaluate information. 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively, using visual, mathematical and/or language skills in the modes of oral and/or written presentations.

    Note:
  • The ability of the candidate to maintain optimum productivity through effective communication and his/her ability to adhere to reporting requirements illustrates his/her capability to communicate effectively. 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically showing responsibility towards the environment and health of others.

    Note:
  • The use of science and technology is not relevant for this unit standard. 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems by recognising that problem-solving contexts do not exist in isolation.

    Note:

    The ability of the candidate to explain the importance of the process in terms of achieving production and up and down stream requirements illustrates his/her understanding of the world as a set of related systems. 

    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 
    This unit standard replaces unit standard 10738 , "Overhaul a single-stage centrifugal pump", Level 3, 6 credits.

    Terminology:

    Specified Requirements:

    Specified requirements include legal and site-specific requirements and are contained in one or more of the following documents:

    Legal:
  • Relevant Acts: e.g. Mine Health and Safety Act and Regulations, 1996 (Act 29/1996), and Minerals Act and Regulations, 1991 (Act 50/1991).
  • Mandatory Codes of Practice.
  • SANS and other relevant Standards.
  • Chief Inspector of Mines' Directives/Instructions.
  • Guidelines issued by the Chief Inspector of Mines.

    Site-Specific:
  • Hazard Identification and Risk Assessments (HIRA).
  • Occupational Health and Safety Risk Management Programme.
  • Managerial Instructions.
  • Mine Standard Procedures.
  • List of Recorded OH&S Risks.
  • Working Guides.
  • Equipment and Materials Specifications.

    Notes to Assessors:

    Assessors should keep the following principles in mind when designing and conducting assessments against this unit standard:
  • Focus the assessment activities on gathering evidence in terms of the main outcome expressed in the title to ensure assessment is integrated rather than fragmented. Remember we want to declare the person competent in terms of the title. Where assessment at title level is unmanageable, then focus assessment around each specific outcome, or groups of specific outcomes.
  • Make sure evidence is gathered across the entire range, wherever it applies. Assessment activities should be as close to the real performance as possible, and where simulations or role-plays are used, there should be supporting evidence to show the candidate is able to perform in the real situation.
  • Do not focus the assessment activities on each assessment criterion. Rather make sure the assessment activities focus on outcomes and are sufficient to enable evidence to be gathered around all the assessment criteria.
  • The assessment criteria provide the specifications against which assessment judgements should be made. In most cases, knowledge can be inferred from the quality of the performances, but in other cases, knowledge and understanding will have to be tested through questioning techniques. Where this is required, there will be assessment criteria to specify the standard required.
  • The task of the assessor is to gather sufficient evidence, of the prescribed type and quality, as specified in this unit standard, that the candidate can achieve the outcomes again and again and again. This means assessors will have to judge how many repeat performances are required before they believe the performance is reproducible.
  • All assessments should be conducted in line with the following well documented principles of assessment: appropriateness, fairness, manageability, integration into work or learning, validity, direct, authentic, sufficient, systematic, open and consistent.

    Unit Standard Justification:

    Level:

    Attribute; Level; Justification:
  • Skills; Level 3; A variety of skills (Dismantling, examining, lubricating and assembling).
  • Procedures; Level 2; Procedure is known and familiar, but not repetitive.
  • Context; Level 2; Contexts are repeatedly applicable and known.
  • Knowledge; Level 3; Relevant theoretical knowledge is required (operation, function and lubrication).
  • Information processing; Level 2; Information is readily available, but some processing is required (tolerances, sequences, specifications).
  • Problem Solving; Level 3; Discretion to identify technical problems. Solutions are well established.
  • Orientation of activities; Level 3; Decisions are taken but require supervision.
  • Application of responsibility; Level 3; Output is checked randomly for quality.
  • Orientation of scope of responsibility; Level 2; Responsible for completion (quantity) and function (quality).

    Average Level = 2.55.
    Actual Level Assigned = 3.

    Credits:

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

    Activity; Hours:
  • Training Centre; 30 Hours.
  • On-The-Job Training; 36 Hours.
  • Mentoring required; 0 Hours.
  • Other (Specify); 0 Hours.

    Total = 66 Hours.

    Credits Achieved = 66/10 = 6.6.
    Credits Assigned = 7. 
    		•

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Elective  66009   National Certificate: Diesel Electric and Electric Fitting  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered"     		 2023-06-30  As per Learning Programmes recorded against this Qual 
    Elective  59709   Further Education and Training Certificate: Mechanical Engineering: Fitting  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.
     
    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.