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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Identify water piping systems, its components, accessories and controls used refrigeration and air conditioning installations

SAQA US ID	UNIT STANDARD TITLE
9536	Identify water piping systems, its components, accessories and controls used refrigeration and air conditioning installations
ORIGINATOR
SGB Air-conditioning Refrigeration and Ventilation
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 3	NQF Level 03	4
REGISTRATION STATUS		REGISTRATION START DATE	REGISTRATION END DATE	SAQA DECISION NUMBER
Passed the End Date - Status was "Registered"		2001-06-13	2004-06-13	SAQA 0836/01
LAST DATE FOR ENROLMENT		LAST DATE FOR ACHIEVEMENT
2005-06-13		2008-06-13

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
116718	Identify water reticulation systems, its components, accessories and controls used in air-conditioning and refrigeration installations	Level 3	NQF Level 03	4

PURPOSE OF THE UNIT STANDARD

Identify and state the purpose of various water piping systems, their components and accessories used in refrigeration and air conditioning applications. People credited with this unit standard are also able to describe the types, operation and construction of water regulating valves used in water piping systems.

LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING

It is recommended that people undertaking training for the competencies in this unit standard are already credited with standards relating the fundamentals of refrigeration and air conditioning systems and related components or demonstrate equivalent skills and knowledge.

UNIT STANDARD RANGE

Systems : PVC, steel or copper chilled water, condenser water, make-up water and drainage systems. Direct and reverse return systems.
Components : Pumps, expansion tanks. Isolating, regulating and non-return valves, vibration eliminators, P-traps, hangers and supports, provision for expansion.

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Identify and state the purpose of various piping systems.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Identify and state the purpose of various piping systems

ASSESSMENT CRITERION NOTES

1.1 The various types of water piping systems are identified and their purpose explained.
Range : Once-through, open, closed, reverse return, direct return. Two-pipe, three-pipe, four-pipe systems.
1.2 The main features, advantages and limitations of the various systems are listed and explained.
1.3 The factors influencing the sizing of water piping are explained.
1.4 The materials commonly used in water piping for air conditioning and refrigeration applications are listed and their advantages and limitations discussed.
1.5 The effect of proper water quality in water piping systems is discussed.

ASSESSMENT CRITERION 2

1. The various types of water piping systems are identified and their purpose explained.

ASSESSMENT CRITERION RANGE

Once-through, open, closed, reverse return, direct return. Two-pipe, three-pipe, four-pipe systems.

ASSESSMENT CRITERION 3

2. The main features, advantages and limitations of the various systems are listed and explained.

ASSESSMENT CRITERION 4

3. The factors influencing the sizing of water piping are explained.

ASSESSMENT CRITERION 5

4. The materials commonly used in water piping for air conditioning and refrigeration applications are listed and their advantages and limitations discussed.

ASSESSMENT CRITERION 6

5. The effect of proper water quality in water piping systems is discussed.

SPECIFIC OUTCOME 2

Describe the operation and installation of the various water piping systems.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Describe the operation and installation of the various water piping systems

ASSESSMENT CRITERION NOTES

2.1 The purpose of typical water piping systems to multiple coil condensers and cooling towers are sketched and explained.
2.2 The operating principles of the various types of water piping systems is explained/
2.3 Methods used in supporting and anchoring water piping are discussed.
2.4 Vibration in water piping systems, its possible causes and solutions to control it are discussed.
2.5 Expansion tank and drain line piping is identified and the purpose and operation explained.
2.6 The importance of proper drainage piping and its routing is discussed.
2.7 Basic installation procedures of water piping is discussed.

ASSESSMENT CRITERION 2

1. The purpose of typical water piping systems to multiple coil condensers and cooling towers are sketched and explained.

ASSESSMENT CRITERION 3

2. The operating principles of the various types of water piping systems is explained.

ASSESSMENT CRITERION 4

3. Methods used in supporting and anchoring water piping are discussed.

ASSESSMENT CRITERION 5

4. Vibration in water piping systems, its possible causes and solutions to control it are discussed.

ASSESSMENT CRITERION 6

5. Expansion tank and drain line piping is identified and the purpose and operation explained.

ASSESSMENT CRITERION 7

6. The importance of proper drainage piping and its routing is discussed.

ASSESSMENT CRITERION 8

7. Basic installation procedures of water piping is discussed.

SPECIFIC OUTCOME 3

Identify and state the purpose of various components and accessories used in water piping system.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Identify and state the purpose of the various components and accessories used in water piping systems

ASSESSMENT CRITERION NOTES

3.1 The various components and accessories used in water piping systems are listed and their operating principles discussed.
Range : Angle valves, gate valves, globe valves, plug cocks, check valves, expansion valves, relief valves. Filters, strainers, expansion tanks, air vents, thermometers and gauges, pumps.
3.2 The purpose of the various components in a water piping system is explained.
3.3 The various components and accessories are located on the system.
3.4 Advantages and limitations of the various types of valves are stated.
3.5 The basic construction of the various components and accessories is described.

ASSESSMENT CRITERION 2

1. The various components and accessories used in water piping systems are listed and their operating principles discussed.

ASSESSMENT CRITERION RANGE

Angle valves, gate valves, globe valves, plug cocks, check valves, expansion valves, relief valves. Filters, strainers, expansion tanks, air vents, thermometers and gauges, pumps.

ASSESSMENT CRITERION 3

2. The purpose of the various components in a water piping system is explained.

ASSESSMENT CRITERION 4

3. The various components and accessories are located on the system.

ASSESSMENT CRITERION 5

4. Advantages and limitations of the various types of valves are stated.

ASSESSMENT CRITERION 6

5. The basic construction of the various components and accessories is described.

SPECIFIC OUTCOME 4

Identify and state purpose of control of water flow in water piping systems.

OUTCOME RANGE

Electric, pressure, thermostatic and hand regulating valves; Solenoid valves; Non-return valves.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

Identify and state purpose of control of water flow in water piping systems

ASSESSMENT CRITERION NOTES

4.1 The criteria for selecting the correct control valve for particular applications are given.
4.2 The function of the various types of control valves is explained.
4.3 The operation of control equipment used in water piping systems is explained and the equipment is identified on water piping systems.
4.4 The basic design and construction of the various control components used in water piping systems as well as the material used, is described.
4.5 The importance of correctly sizing the valves is explained.

ASSESSMENT CRITERION RANGE

Electric, pressure, thermostatic and hand regulating valves. Solenoid valves. Non-return valves

ASSESSMENT CRITERION 2

1. The criteria for selecting the correct control valve for particular applications are given.

ASSESSMENT CRITERION 3

2. The function of the various types of control valves is explained.

ASSESSMENT CRITERION 4

3. The operation of control equipment used in water piping systems is explained and the equipment is identified on water piping systems.

ASSESSMENT CRITERION 5

4. The basic design and construction of the various control components used in water piping systems as well as the material used, is described.

ASSESSMENT CRITERION 6

5. The importance of correctly sizing the valves is explained.

UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS

Any person wishing to be assessed against this unit standard may apply to an assessment agency, assessor or provider institution accredited by the relevant ETQA, who may appoint a moderator to be present at the assessment.
The assessor must have knowledge and experience of air conditioning or refrigeration.

UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE

* Naming type and explaining function of water piping systems, their fittings, components and control valves.
* Construction of water piping systems.
* Purpose of piping, fittings, accessories and controls in water piping systems.
* Manufacturer`s and/or works instructions or company guidelines regarding basic installation procedures.

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems.
Identify water piping systems and components, materials and water flow controls.

UNIT STANDARD CCFO WORKING

Work effectively with others.
Work as member of a team.

UNIT STANDARD CCFO ORGANISING

Organise and manage myself and my activities responsibly and effectively.
Selecting correct system for particular application.

UNIT STANDARD CCFO COMMUNICATING

Communicate effectively.
Present oral or written report to supervisor.

UNIT STANDARD CCFO SCIENCE

Use science and technology effectively and critically
Identification of piping, components and controls.

UNIT STANDARD CCFO DEMONSTRATING

Demonstrate an understanding of the world as a set of related systems.
Be aware of the effect of incorrect selection and installation of piping system.

UNIT STANDARD CCFO CONTRIBUTING

Learner and societal development.
By learning how a water piping system used in refrigeration and air conditioning installations operates.

UNIT STANDARD NOTES

This unit standard has been replaced by unit standard 116718, which is "Identify water reticulation systems, its components, accessories and controls used in air-conditioning and refrigeration installations", Level 3, 4 credits.

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Elective	20720	National Certificate: Air-Conditioning, Refrigeration and Ventilation	Level 3	NQF Level 03	Passed the End Date - Status was "Registered"	2004-06-13	Was MERSETA 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.

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