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: 

Weld workpieces with the oxy-acetylene gas welding process in the down hand position 
SAQA US ID UNIT STANDARD TITLE
12242  Weld workpieces with the oxy-acetylene gas welding process in the down hand position 
ORIGINATOR
SGB Manufacturing and Assembly Processes 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 06 - Manufacturing, Engineering and Technology Manufacturing and Assembly 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 2  NQF Level 02  10 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Passed the End Date -
Status was "Reregistered" 		 2005-07-19  2007-02-21  SAQA 0160/05 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2008-02-21   2011-02-21  

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
243072  Weld workpieces using the oxy-acetylene gas welding process in the downhand position  Level 2  NQF Level 02  10   

PURPOSE OF THE UNIT STANDARD 
This unit standard is for a learner within the fabrication and welding fields.

A person credited with this unit standard is capable of:
  • Describe and explain the oxyacetylene gas welding process
  • Select, assemble and conduct pre operational checks of oxyacetylene gas welding equipment
  • Prepare work pieces prior to welding
  • Weld metals with oxyacetylene gas welding process
  • Inspect welded work piece for defects
  • Care and store welding consumables and equipment

    This unit standard will contribute to the full development of any learner by providing recognition, further mobility and transportability within the field. The knowledge, skills and understanding demonstrated in this unit standard are essential for social and economic transformation and upliftment within the fabrication and welding environment. 
    		•

    LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
  • Abet level 4/NQF 1 (Numeracy and literacy) or equivalent
    SAQA Lo/06
    SAQA Com/001
    SAQA Com/003
    SAQA Com/004
    SAQA Unit Math 001
    SAQA Unit math 002
    SAQA Unit Math 007
    SAQA Unit Math 013
  • Worksite practices
  • Prepare work pieces for welding
  • Basic engineering practices unit standard 
    		•

    UNIT STANDARD RANGE 
    Scope:

    Range of materials used is:
  • Low carbon steel


    Context:
  • All work undertaken must comply with Occupational Health and Safety Act
  • All work done must comply with worksite practices
  • All work done under consistent supervision


    Level:

    Level (for level 2)
    A learning programme leading to the award of this unit standard should develop learners who demonstrate:
    (a) Ability to carry out moderate tasks that are familiar
    (b) Ability to offer a clear choice of routine responses
    (c) Basic operational knowledge base as indicated in the embedded knowledge component and that are readily available
    (d) An understanding of known solutions to familiar problems with little generation of new ideas
    (e) Ability to work under direct supervision with some responsibility 
    		•

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Describe and explain the oxyacetylene gas welding process. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. The importance of correct assembly of the oxyacetylene gas welding equipment, and the consequences of incorrect assembly, is explained with reference to the vendor requirements. 

    ASSESSMENT CRITERION 2 
    2. Basic and major components of the oxyacetylene gas welding equipment are identified and the explanation of function and purpose is correct in terms of vendor requirements and standards 

    ASSESSMENT CRITERION 3 
    3. Parts and components correctly identified and the implications for not testing for leaks are explained. 

    ASSESSMENT CRITERION 4 
    4. Terms and definitions used are consistent with generally accepted welding terminology as recorded in international welding standards. 
    ASSESSMENT CRITERION RANGE 
    Parts include: gas cylinders, gas regulators, flashback aresters, hoses, clamps, welding torch, welding nozzles, gas cylinder key and soapy water.
     

    SPECIFIC OUTCOME 2 
    Select, assemble and conduct pre operational checks of oxyacetylene gas welding equipment. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Verification of identification and selection of oxyacetylene gas welding equipment as specified on welding procedure sheet. 

    ASSESSMENT CRITERION 2 
    2. Identification and rectification of hazards relate to welding process in accordance with standard work site practices. 

    ASSESSMENT CRITERION 3 
    3. Pre operational checks are carried out in accordance with vendor specifications and to be leak free. 
    ASSESSMENT CRITERION RANGE 
    Resources to include: Manufacturer's specification, worksite practices and safety and environmental issues
     

    SPECIFIC OUTCOME 3 
    Prepare work pieces prior to welding. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Work pieces prepared prior to welding as specified on drawing and worksite practices. 

    ASSESSMENT CRITERION 2 
    2. Dimensions and alignment checked as specified on drawing. 

    ASSESSMENT CRITERION 3 
    3. Workpiece tack welded in position as per drawing specifications. 

    ASSESSMENT CRITERION 4 
    4. Safety precautions adhered to. 

    ASSESSMENT CRITERION 5 
    5. Inspect workpiece prior to welding. 
    ASSESSMENT CRITERION RANGE 
    Resources include: Worksite practices, tools, equipment, safety requirements and materials.
     

    SPECIFIC OUTCOME 4 
    Weld metals with oxyacetylene gas welding process. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Welding filler material selected as specified on welding procedure sheet. 

    ASSESSMENT CRITERION 2 
    2. Workpiece welded in position. 

    ASSESSMENT CRITERION 3 
    3. Safety precaution adhered to during welding process. 

    ASSESSMENT CRITERION 4 
    4. Workpiece cleaned after welding as per worksite practices. 
    ASSESSMENT CRITERION RANGE 
    Material type to be welded: Low carbon steels,
    Resources include: Welding equipment, tools, protective clothing and equipment, welding procedure sheet and specification, materials
    Welding joints: Butt, overlap, fillet, and outside corner welds
     

    SPECIFIC OUTCOME 5 
    Inspect welded work piece for defects. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. All residues flaking of material and slag removed as specified in cleaning procedure. 

    ASSESSMENT CRITERION 2 
    2. Welded workpiece conform to specifications as reflected on drawing. 

    ASSESSMENT CRITERION 3 
    3. Inspection methods and procedures selected are conducive to job requirements. 

    ASSESSMENT CRITERION 4 
    4. Documentation completed as reflected in worksite practices. 
    ASSESSMENT CRITERION RANGE 
    Procedures include: Worksite practices, inspection methods (visual only), and cleaning procedures.
     

    SPECIFIC OUTCOME 6 
    Care and store welding consumables and equipment. 

    ASSESSMENT CRITERIA     

    ASSESSMENT CRITERION 1 
    1. Tools and equipment care for as per manufacturer's specifications stored as per worksite practices. 

    ASSESSMENT CRITERION 2 
    2. Tools and equipment stored to conform to worksite practices. 

    ASSESSMENT CRITERION 3 
    3. Welding consumables stored in accordance with worksite practices. 
    ASSESSMENT CRITERION RANGE 
    Tools and equipment stored to conform to worksite practices.
     


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
    Anyone assessing a learner against this unit standard, must be registered as an assessor with the relevant ETQA.

    Any institution offering learning that will enable achievement of this unit standard must be accredited in terms of the criteria laid down by the relevant ETQA.

    Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines in the relevant qualification and the agreed ETQA procedures. 

    UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Names & functions of:
  • Oxy-acetylene welding equipment
  • Consumables
  • Personal protective equipment

    Attributes, descriptions, characteristics & properties:
  • Types of metals and their properties
  • Types of gas mixtures and gas pressures
  • Common defects
  • Hazards

    Sensory cues
  • Smell indicating flammable gas leaks
  • Smell indicating overheating equipment

    Purpose of:
  • Oxy-acetylene welding
  • Safety checks
  • Reporting incidents and conditions
  • Visual examinations
  • Post welding operations

    Processes, events, causes and effects, implications:
  • Implications of using incorrect gas
  • Implications of using incorrect gas pressure settings
  • Causes and responses to defects
  • Basic welding process
  • Implications of not preparing workpiece before welding

    Procedures and techniques:
  • Set-up procedures for gas welding
  • Oxy-acetylene gas welding procedure
  • Preparation for welding metals
  • Safety procedures and equipment
  • Quality procedures
  • Reporting procedures

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

    Theory: rules, principles, laws:
  • Applicable basic welding theory covering oxy-acetylene welding, flame types and their applications

    Relationships, systems:
  • Relationship between the gas, the equipment and the metal 
    		•


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Identify and solve problems:
  • Recognise problems while welding with oxyacetylene gas and respond appropriately
  • Defects are recognised and corrected
  • Hazards are recognised and prevented 
    		•

    UNIT STANDARD CCFO WORKING 
    Working together with others:
  • Participate in efforts of workgroup 
    		•

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage myself and my activities:
  • Plan sequence of operations based on job instructions and set up equipment appropriately 
    		•

    UNIT STANDARD CCFO COLLECTING 
    Collect, analyse, organise and critically evaluate information:
  • Visually examine and conduct tests on completed weld to control quality 
    		•

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively:
  • Provide feedback on outcome of work to appropriate personnel 
    		•

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically:
  • Understand gas mixture, flame settings and gas pressures and their effects on metals 
    		•

    UNIT STANDARD CCFO DEMONSTRATING 
    Demonstrate an understanding of the world as a set of related systems:
  • Explain the role of oxy-acetylene gas welding in the fabrication process 
    		•

    UNIT STANDARD ASSESSOR CRITERIA 
    Assessors should keep the following general 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 NOTES 
    This unit standard has been replaced by unit standard 243072, which is "Weld workpieces using the oxy-acetylene gas welding process in the downhand position", Level 2, 10 credits.

    This unit standard may be obtained through RPL. The learner should be thoroughly briefed on the mechanism to be used and support and guidance should be provided. Care should be taken that the mechanism used provides the learner with an opportunity to demonstrate competence and is not so onerous as to prevent learners from taking up the RPL option towards gaining a qualification. 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  22869   National Certificate: Engineering Fabrication  Level 2  NQF Level 02  Passed the End Date -
    Status was "Reregistered"     		 2007-08-16  MERSETA 
    Core  24214   National Certificate: Welding Application and Practice  Level 2  NQF Level 02  Passed the End Date -
    Status was "Registered"     		 2006-12-03  MERSETA 


    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.