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: 

Install irrigation water storage tanks 
SAQA US ID UNIT STANDARD TITLE
335995  Install irrigation water storage tanks 
ORIGINATOR
SGB Ornamental Horticulture and Landscape 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 01 - Agriculture and Nature Conservation Horticulture 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 3  NQF Level 03 
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 person credited with this Unit Standard will be able to:
  • Prepare an area for a storage tank and construct a concrete base.
  • Install a tank and fit all necessary isolation and automatic valves.
  • Connect the inlet and outlet piping.
  • Install and set float switches to effect level control and pump protection. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • It is assumed that learners are competent in Communication and Mathematical Literacy at NQF Level 2 or equivalent. 

  • UNIT STANDARD RANGE 
    N/A 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Construct a concrete base for a storage tank. 
    OUTCOME RANGE 
    Includes but is not limited to reasons for a concrete base, consequences of installing directly on the ground, compacting soil, install blinding, mixing, pouring and floating the concrete. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The reasons why storage tanks require a level concrete base are explained in terms of the need to achieve a stable platform and even weight distribution. 

    ASSESSMENT CRITERION 2 
    The consequences of installing a tank directly onto the ground are described with respect to the possible repercussions that may result. 

    ASSESSMENT CRITERION 3 
    The necessity of compacting the sub-base is explained in terms of achieving the degree of compaction to ensure that no subsidence occurs. 

    ASSESSMENT CRITERION 4 
    The various methods of "blinding" the compacted area before the concrete is laid are described and the techniques of using plastic underlay as a blinding are demonstrated in accordance with the company's standard operating procedures. 

    ASSESSMENT CRITERION 5 
    The consequences of pouring concrete onto bare earth are explained in terms of the resultant "honeycombing" effect and reduction in load bearing strength. 

    ASSESSMENT CRITERION 6 
    The procedures for mixing, pouring and floating the concrete are demonstrated in accordance with the company's standard operating procedures. 

    SPECIFIC OUTCOME 2 
    Position a storage tank on a prepared base and install the necessary piping. 
    OUTCOME RANGE 
    Includes but is not limited to types of tanks: Galvanised steel-panel and individual , fibre cement, fibreglass, polyethylene, handling practices for moving and installing a tank, inspection cover, LDPE (Low Density Polyethylene) and soft walled piping, inlet at top, inlet opposite outlet, break joints, and installation procedures. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The various types of storage tanks are described in terms of their suitability for the storage of irrigation water and the correct handling practices for moving and placing a tank on a prepared base are demonstrated in accordance with the company's standard operating procedures. 

    ASSESSMENT CRITERION 2 
    The importance of ensuring that the tank's inspection cover faces an accessible side is explained in terms of the need to gain easy access to the equipment in the tank. 

    ASSESSMENT CRITERION 3 
    The reasons why LDPE and other soft walled pipes should not be fitted to the inlet or outlet connections of a tank are explained within the context of their lack of durability for external use. 

    ASSESSMENT CRITERION 4 
    The necessity of connecting the inlet piping to the top of the tank and on the opposite side to the outlet are explained with regard to preventing possible backflow out of the tank and the reduction outlet turbulence. 

    ASSESSMENT CRITERION 5 
    The essential need to fit "break joints" on the inlet and outlet piping is explained and the procedures for installing the piping and interconnecting fittings are demonstrated in accordance with the company's standard operating procedures. 

    SPECIFIC OUTCOME 3 
    Fit and adjust isolation and control valves to a storage tank. 
    OUTCOME RANGE 
    Includes but is not limited to isolation valves, ease of maintenance, conserving water, ball valve, tank level indicators, causes of vortex formation, diffuser plate. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The necessity of installing an isolation valve on the outlet piping from the tank is explained with regard to facilitating ease of maintenance and of conserving the stored water. 

    ASSESSMENT CRITERION 2 
    The role that a ball valve plays in maintaining the water level in a tank is explained and the procedures for fitting and adjusting this valve are demonstrated in accordance with the company's standard operating procedures. 

    ASSESSMENT CRITERION 3 
    The function that a solenoid valve performs in controlling tank filling is described and the procedures for fitting and adjusting the valve are demonstrated in accordance with the company's standard operating procedures. 

    ASSESSMENT CRITERION 4 
    The various types of tank level indicators are described and the procedures for fitting and adjusting these are demonstrated in accordance with the company's standard operating procedures. 

    ASSESSMENT CRITERION 5 
    The necessity of preventing a suction vortex in a storage tank is described in terms of the factors that cause the formation of this phenomenon and the dangers that this poses to a pump. 

    ASSESSMENT CRITERION 6 
    The methods of preventing or curing a vortex in a storage tank are demonstrated in accordance with the company's standard operating procedures. 

    SPECIFIC OUTCOME 4 
    Fit and adjust float switches to a storage tank. 
    OUTCOME RANGE 
    Includes but is not limited to low level functions, pump protection, high level control functions, tank filling and pump hunting, low voltage operation, settings and positioning, 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The necessity of installing a float switch for low level "cut out" is explained with respect to preventing the "dry running" of a pump fitted to the outlet piping. 

    ASSESSMENT CRITERION 2 
    The functions that the differential settings for a float switch perform when utilised for low level protection are described in terms of the adjustment between switching off a booster pump and the recovery level when it is reactivated. 

    ASSESSMENT CRITERION 3 
    The role that a float switch plays in controlling the filling of a tank is described within the context of the "high level" activation of a borehole or solenoid valve. 

    ASSESSMENT CRITERION 4 
    The functions that the differential settings for a float switch perform when utilised for high level control are described in terms of controlling the filling and preventing the feeder/borehole pump from "hunting". 

    ASSESSMENT CRITERION 5 
    The reasons why float switches must only operate at 24-volts or lower are explained in context of adhering to safety practices and the prevention of possible electrocution. 

    ASSESSMENT CRITERION 6 
    The reasons why float switches must be installed away from the side of a tank and kept apart from each other are explained in terms of preventing entanglement and "sticking" to the side of the tank. 

    ASSESSMENT CRITERION 7 
    The procedures for installing, positioning and adjusting float switches for high level control and low level protection are demonstrated in accordance with the company's standard operating procedures. 


    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 or moderator respectively with the relevant Education and Training Quality Assurance Body (ETQA), or with another ETQA that has a Memorandum of Understanding 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, or with another ETQA that has a Memorandum of Understanding with the relevant ETQA.
  • Assessment and moderation of assessment will be overseen by the relevant ETQA, or by another ETQA that has a Memorandum of Understanding with the relevant ETQA, according to the ETQA's policies and guidelines for assessment and moderation.
  • Moderation must include both internal (provider-based) and external (ETQA-based) moderation of assessment, unless ETQA policies specify otherwise.
  • Assessment and moderation of assessment against this Unit Standard should encompass achievement of competencies described in the individual Unit Standard and may encompass achievement of integrated competencies with other Unit Standard(s).
  • 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 
    N/A 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    The learner is able to identify and solve problems in which responses display that responsible decisions using critical and creative thinking have been made by:
  • Understanding the dangers associated with high voltage and only working with 24 volt when installing float switches. 

  • UNIT STANDARD CCFO ORGANISING 
    The learner is able to organise and manage oneself and one's activities responsibly and effectively by:
  • Preparing for the installation of float switches by presetting the differential adjustments. 

  • UNIT STANDARD CCFO COMMUNICATING 
    The learner is able to communicate effectively using visual, mathematical and/or language skills in the modes of oral and/or written presentation by:
  • Compile a list of materials for an installation and relaying this to a superior for ordering. 

  • UNIT STANDARD CCFO SCIENCE 
    The learner is able to use science and technology effectively and critically, showing responsibility towards the environment and health of others by:
  • Understanding the factors that cause a vortex in a tank and the methods of preventing this from occurring. 

  • 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 
    The Learner:
  • is expected to perform the Specific Outcomes reflected in this Unit Standard without direct supervision.
  • should have access to work site procedures.
  • should demonstrate an application of ethics and values.
  • must apply basic principles of general safety and customer care.
  • should demonstrate an awareness of the expectations and obligations of basic employee/employer relations including industrial relations principles.

    At this level the communication/reporting of issues arising in the workplace, is embedded in the Specific Outcomes and the related Assessment Criteria.

    It is understood that, due to the nature of the work environment and the skills level of the Learner, that the aspects of teamwork form an integral part of the necessary Specific Outcomes and related Assessment Criteria.

    The points included under the notes, should be included when the qualifying Learners are being assessed. 

  • QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  73109   National Certificate: Landscape Irrigation  Level 3  NQF Level 03  Reregistered  2023-06-30  AgriSETA 


    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.