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: |
Demonstrate knowledge of hydraulics and flow measurement in water and wastewater systems |
SAQA US ID | UNIT STANDARD TITLE | |||
254076 | Demonstrate knowledge of hydraulics and flow measurement in water and wastewater systems | |||
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 3 | NQF Level 03 | 12 |
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 | |||
2026-06-30 | 2029-06-30 |
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 |
People credited with this unit standard are able to demonstrate knowledge of external factors affecting wastewater flows, and flow measurement techniques for wastewater.
This unit standard is for people who supervise maintenance and operations in water reticulation, and people who work in specialist water reticulation activities. |
LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING |
Numeracy and literacy at an appropriate level or open access. |
UNIT STANDARD RANGE |
Water reticulation:
CCTV: |
Specific Outcomes and Assessment Criteria: |
SPECIFIC OUTCOME 1 |
Describe the hydraulics of a water reticulation system. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The concept of pressure is described in terms of static pressure and variation of pressure. |
ASSESSMENT CRITERION 2 |
Variation of pressure loss and hydraulic grade line are described in terms of flow rate changes. |
ASSESSMENT CRITERION 3 |
Internal pipe pressure forces are described in terms of anchorage requirements. |
ASSESSMENT CRITERION RANGE |
Jointing requirements, end caps, bends, anchor blocks, ground loadings. |
ASSESSMENT CRITERION 4 |
The role of pumps is described in terms of the impact on hydraulic gradients. |
ASSESSMENT CRITERION 5 |
Sources of pressure losses and hydraulic grade line are described in terms of flow rate changes. |
SPECIFIC OUTCOME 2 |
Describe the hydraulics of wastewater collection systems. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
The drainage system is described in relation to the natural lie of the land. |
ASSESSMENT CRITERION RANGE |
Catchment identification, pipe size increases with flow and fall reductions, need to maintain gravity property service, limitations of roading network relative to gradient required. |
ASSESSMENT CRITERION 2 |
The capacity of a gravity sewer is described in terms of the fall available, and diameter. |
ASSESSMENT CRITERION RANGE |
Concept of friction, velocity, surcharge, corrosion. |
ASSESSMENT CRITERION 3 |
The velocity in a sewer is described in terms of self cleaning limits. |
ASSESSMENT CRITERION RANGE |
Deposition of solids, scour velocity, minimum slope required, low flow conditions, flushing flows, flushing techniques, sulphide gas production. |
ASSESSMENT CRITERION 4 |
Wastewater pumping stations are described in terms of their impact on system hydraulics. |
ASSESSMENT CRITERION RANGE |
Rising mains, pressure concepts, intermittent operation, system head curves against pump pressure, flow curve. |
SPECIFIC OUTCOME 3 |
Demonstrate knowledge of external factors affecting wastewater flows. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Sewer flows are described in terms of design criteria for pipe capacity. |
ASSESSMENT CRITERION RANGE |
Flows domestic, commercial, industrial. |
ASSESSMENT CRITERION 2 |
Sewer flows are described in terms of the reasons for their variability. |
ASSESSMENT CRITERION RANGE |
Includes but is not limited to diurnal variation related to water use, seasonal variation related to inflow and infiltration, wet weather events. |
ASSESSMENT CRITERION 3 |
Inflow, infiltration, and exfiltration are described and distinguished in terms of source and potential causes. |
ASSESSMENT CRITERION RANGE |
Causes include but are not limited to leaking pipe joints, gully traps, manholes, illegal connections; reticulation type-combined, separate. |
ASSESSMENT CRITERION 4 |
Excessive infiltration and exfiltration are described in terms of their consequences. |
ASSESSMENT CRITERION RANGE |
Flooding, property damage, wastewater asset damage, public health risks, environmental damage, impact on wastewater treatment. |
SPECIFIC OUTCOME 4 |
Methods used to identify, prevent, or reduce inflow, infiltration, and exfiltration is described in terms of their techniques. |
OUTCOME RANGE |
Closed circuit television (CCTV), property inspection, smoke testing, dye testing, flow gauging, network modelling, pipe line and manhole rehabilitation, pressure testing. |
ASSESSMENT CRITERIA |
ASSESSMENT CRITERION 1 |
Gravity flow measurement is described in terms of methods used. |
ASSESSMENT CRITERION RANGE |
Weirs, flumes; open channel meters-velocity measurement and ultrasonic or pressure depth sensors. |
ASSESSMENT CRITERION 2 |
Network flow simulation models are described in terms of their type, operation, and purpose. |
ASSESSMENT CRITERION RANGE |
Computer simulation of water and wastewater networks; calibration of flow meters; future network infrastructure planning; flow catchment studies inflow and/or infiltration, water loss/leak detection reduction programmes. |
ASSESSMENT CRITERION 3 |
Pressure flow measurement is described in terms of the meter types used. |
ASSESSMENT CRITERION RANGE |
Venturi, magflow, ultrasonic, piston, fan wheel. |
UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS |
UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE |
Learners are to have a knowledge and understanding of:
|
UNIT STANDARD DEVELOPMENTAL OUTCOME |
N/A |
UNIT STANDARD LINKAGES |
N/A |
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.
This relates to all specific outcomes. |
UNIT STANDARD CCFO WORKING |
Work effectively with others as a member of a team, group, organisation, and community.
This relates to: |
UNIT STANDARD CCFO ORGANISING |
Plan, organize and manage oneself and one`s activities responsibly and effectively.
This relates to all specific outcomes. |
UNIT STANDARD CCFO COLLECTING |
Collect, analyse, organise and critically evaluate information.
This relates to: |
UNIT STANDARD CCFO COMMUNICATING |
Communicate effectively using visual, mathematical and/or language skills in the form of oral and/or written presentation.
This relates to all specific outcomes. |
UNIT STANDARD CCFO SCIENCE |
Use science and technology effectively and critically, showing responsibility towards the environment and health of others.
This relates to: |
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.
This relates to: |
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 |
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. |
QUALIFICATIONS UTILISING THIS UNIT STANDARD: |
ID | QUALIFICATION TITLE | PRE-2009 NQF LEVEL | NQF LEVEL | STATUS | END DATE | PRIMARY OR DELEGATED QA FUNCTIONARY | |
Core | 60155 | National Certificate: Water and Wastewater Reticulation Services | Level 3 | NQF Level 03 | Passed the End Date - Status was "Reregistered" |
2023-06-30 | EWSETA |
Elective | 66429 | National Certificate: Landscape Irrigation | Level 2 | NQF Level 02 | Passed the End Date - Status was "Reregistered" |
2023-06-30 | AgriSETA |
Elective | 66071 | Further Education and Training Certificate: Computer Aided Drawing Office Practice (CAD) | Level 4 | NQF Level 04 | Passed the End Date - Status was "Reregistered" |
2023-06-30 | CETA |
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. | CHILUTSI TRADING ENTERPRISE |
2. | ERGO MAPHELONG INSTITUTE (PTY) LTD |
3. | ERWAT |
4. | GG SQUARED PROJECTS |
5. | GNS ENTERPRISE (PTY) LTD |
6. | HAZYVIEW WATER SKILLS ACADEMY |
7. | istudent Academy (Pty) Ltd |
8. | MMAKAU TRAINING INSTITUTE (PTY) LTD |
9. | SABS NATIONAL ELECTRICAL TESTING FACILITY OLIFANTSFONTEIN |
10. | SEANEGO INTERGRATED NATURAL RESOURCES MANAGEMENT |
11. | THOBOLOGO TRAINING & EDUCATION GROUP |
12. | TWINMARK STRATEGY AND MANAGEMENT CONSULTANTS |
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. |