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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE: 

Demonstrate knowledge of the principles of hydraulics 
SAQA US ID UNIT STANDARD TITLE
12059  Demonstrate knowledge of the principles of hydraulics 
ORIGINATOR
SGB Water Sector 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Civil Engineering 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
Passed the End Date -
Status was "Reregistered" 
2005-09-13  2008-06-11  SAQA 0160/05 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2009-06-11   2012-06-11  

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 is replaced by: 
US ID Unit Standard Title Pre-2009 NQF Level NQF Level Credits Replacement Status
255981  Demonstrate knowledge of the principles of water hydraulics  Level 4  NQF Level 04  Complete 

PURPOSE OF THE UNIT STANDARD 
A qualifying learner achieving this unit standard in combination with context expertise standard(s) will be able to explain the principles of hydraulics and know how to measure flow and protect pumps and pipelines on a works from water hammer and cavitation. This competence will enable the learner to contribute towards keeping the works functioning in an efficient manner to ensure continuous service to the community. Achieving this unit standard will enhance employability of the learner in both the water sector and other industry related jobs. 

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
Literacy NQF level 4;
Numeracy NQF level 4;
Knowledge of mechanical and electrical equipment NQF level 2. 

UNIT STANDARD RANGE 
Open channel devices:
V notch, venturi, rectangular weir and head measuring techniques.

Pipe measuring devices:
Mag flow, rotameters, positive displacement pump and orifice plate. 

Specific Outcomes and Assessment Criteria: 

SPECIFIC OUTCOME 1 
Explain the principles of hydraulics 

ASSESSMENT CRITERIA
 

ASSESSMENT CRITERION 1 
1. Gravity flow is explained. 

ASSESSMENT CRITERION 2 
2. Hydro static pressure is explained. 

ASSESSMENT CRITERION 3 
3. Syphoning is explained. 

ASSESSMENT CRITERION 4 
4. Pressure drop in pipe flow is explained. 

SPECIFIC OUTCOME 2 
Explain measurement of flow 

ASSESSMENT CRITERIA
 

ASSESSMENT CRITERION 1 
1. Measurement of flow in all types of open channel devices is explained. 

ASSESSMENT CRITERION 2 
2. Measurement of flow in pipelines is explained. 

ASSESSMENT CRITERION 3 
3. Problems with flow are identified; causes and corrective action are explained. 

SPECIFIC OUTCOME 3 
Explain flow characteristics in pressurised lines 

ASSESSMENT CRITERIA
 

ASSESSMENT CRITERION 1 
1. Principles of water hammer are explained. 

ASSESSMENT CRITERION 2 
2. Principles of cavitation are explained. 

ASSESSMENT CRITERION 3 
3. Flow losses due to friction in pipelines are explained and ways to reduce friction loss are described. 

SPECIFIC OUTCOME 4 
Explain flow measuring devices 

ASSESSMENT CRITERIA
 

ASSESSMENT CRITERION 1 
1. Open channel measuring devices are described. 

ASSESSMENT CRITERION 2 
2. All pipe measuring devices are described and explained. 

ASSESSMENT CRITERION 3 
3. Procedures for cleaning meters are explained. 

ASSESSMENT CRITERION 4 
4. Principles of flow measuring devices are explained. 

ASSESSMENT CRITERION 5 
5. Calculations of flow and retention time are accurate. 

ASSESSMENT CRITERION 6 
6. Calculations of capacities are accurate. 


UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner or moderating the assessment of a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable the achievement of this unit standard must be accredited as a provider with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant ETQA according to the ETQA`s policies and guidelines for assessment and moderation.
  • Moderation must include both internal and external moderation of assessments at exit points of the qualification, unless ETQA policies specify otherwise. Moderation should also encompass achievement of the competence described both in individual unit standards as well as the integrated competence described in the qualification. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Learners should have a knowledge and understanding of:
  • The importance of measuring flow
  • The importance of accuracy when calculating flow measurements
  • Downtime implications for a treatment works if there is water hammer or cavitation
  • Pressure drops
  • The damage caused by cavitation
  • Flow dynamics of sludges and sewage
  • How and where flow is measured 


  • Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems in which responses display that responsible decisions using critical and creative thinking have been made.

    Assessment criteria:
  • Problems with flow are identified, causes and corrective action are explained.
  • Flow losses due to friction in pipelines are explained and ways to reduce friction loss are described. 

  • UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team, group, organisation, and community.

    Assessment criteria:
  • None. 

  • UNIT STANDARD CCFO ORGANISING 
    Plan, organise and manage oneself and one`s activities responsibly and effectively.

    Assessment criteria:
  • None. 

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

    Assessment criteria:
  • Problems with flow are identified, causes and corrective action are explained.
  • Flow losses due to friction in pipelines are explained and ways to reduce friction loss are described. 

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

    Assessment criteria:
  • All. 

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

    Assessment criteria:
  • None. 

  • 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.

    Assessment criteria:
  • All. 

  • UNIT STANDARD NOTES 
    This unit standard has been replaced by unit standard 255981, which is "Demonstrate knowledge of the principles of water hydraulics", Level 4, 6 credits.

    Integrated assessment:

    When conducting assessments, assessors must ensure that they are familiar with the full text of the unit standards being assessed. Assessors must ensure that the assessment covers the specific outcomes, critical cross-field outcomes and essential embedded knowledge by developing assessment activities and tools, which are appropriate to the contexts in which the learners are working. These activities and tools may include self-assessment, peer assessment, formative and summative assessment. It may be more effective and efficient to assess a number of unit standards together in an integrated way, thus reducing the overall number of assessments and ensuring that commonalities that exist between a number of unit standards are captured in a way that makes sense for assessment.

    Assessment option:

    Learners could be assessed using the following methods:
    Oral or written questions
    Simulations 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  48906   Further Education and Training Certificate: Supervision of Wastewater Reticulation Operations  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered" 
    2008-02-19  Was EWSETA until Last Date for Achievement 
    Core  22672   National Certificate: Wastewater Process Control  Level 4  NQF Level 04  Passed the End Date -
    Status was "Reregistered" 
    2008-06-11  Was EWSETA until Last Date for Achievement 
    Elective  48905   National Certificate: Wastewater Reticulation Services  Level 3  NQF Level 03  Passed the End Date -
    Status was "Reregistered" 
    2008-02-19  Was EWSETA until Last Date for Achievement 


    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.