SAQA

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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Join sheetmetal with resistance arc welding process

SAQA US ID	UNIT STANDARD TITLE
14701	Join sheetmetal with resistance arc welding process
ORIGINATOR
SGB Welding
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	4
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
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

This unit standard is for a learner within the fabrication and welding fields
A person credited with this unit standard is capable of:

Describe the resistance welding process

Select, set up and conduct pre operational checks of resistance welding equipment

Prepare sheetmetal prior to welding

Join sheetmetal

Inspect welded sheetmetal 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

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

UNIT STANDARD RANGE

Scope:
Sheetmetal to be joined should be up to 2mm thick.
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 constant supervision

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Describe and explain the resistance welding process and equipment.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The importance of correct assembly of the resistance welding equipment, and the consequences of incorrect assembly, is explained with reference to manufacturer's requirements.

ASSESSMENT CRITERION 2

2. Components of the resistance 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 incorrect identification 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: Welding machine, earth clamp, contact electrodes, hose clamps.

SPECIFIC OUTCOME 2

Select, assemble and conduct pre operational checks of resistance welding equipment.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Verification, identification and selection of resistance welding equipment and accessories as per job requirements

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 manufacturer's specifications

ASSESSMENT CRITERION 4

4. A safe worksite is created to prevent damage to equipment and injury to people

ASSESSMENT CRITERION 5

5. Resistance welding parameters are set as per manufacturer's specifications and job requirements

ASSESSMENT CRITERION RANGE

Resources to include: manufacturer's specification, worksite practices, and safety and environmental issues.

SPECIFIC OUTCOME 3

Prepare sheetmetal prior to welding.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Sheetmetal 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. Sheetmetal tack welded in position as per drawing specifications

ASSESSMENT CRITERION 4

4. Safety precautions adhered to

ASSESSMENT CRITERION 5

5. Inspect sheetmetal prior to welding

ASSESSMENT CRITERION RANGE

Resources include: Worksite practices, tools, equipment, safety requirements and materials.

SPECIFIC OUTCOME 4

Join sheetmetal with resistance welding.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Sheetmetal joined in position as per job requirements

ASSESSMENT CRITERION 2

2. Safety precaution adhered to during welding process

ASSESSMENT CRITERION 3

3. Sheetmetal cleaned after welding as per worksite practices

ASSESSMENT CRITERION 4

4. Potential causes for resistance welding defects/imperfections are identified prior to welding and action taken to meet job requirements

ASSESSMENT CRITERION RANGE

Material type to be welded: Low carbon steel
Resources include: Resistance welding equipment, tools, protective clothing, equipment, and materials

SPECIFIC OUTCOME 5

Inspect work piece.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Welded sheetmetal inspected for defects/job requirements

ASSESSMENT CRITERION RANGE

Defects - destructive and/or non-destructive testing methods

ASSESSMENT CRITERION 2

2. All defects dealt with in accordance to work site practices.

ASSESSMENT CRITERION 3

3. Documentation completed as reflected in worksite practices

ASSESSMENT CRITERION RANGE

Procedures include: Worksite practices, inspection methods and cleaning procedures

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

1. Names and functions of:

Resistance welding equipment and accessories

Personal protective equipment
2. Attributes, descriptions, characteristics and properties:

Types of metals and their properties

Types of electrode tips and their characteristics

Common defects

Hazards
3. Purpose of:

Resistance welding

Safety checks

Reporting incidents and conditions

Checking completed joint
4. Sensory cues:

Smell indicating overheating equipment
5. Processes, events, causes and effects, implications:

Implications of using incorrect electrode tips

Causes and responses to defects

Resistance welding process

Implications of not preparing sheetmetal before welding

Electrode tips cooling procedures

Procedures and techniques:

Set up procedures for resistance welding

Resistance welding procedure

Preparation for welding sheetmetal

Safety procedures

Quality procedures

Recording and reporting procedures

Non-destructive and destructive testing procedures and methods
7. Regulations, legislation, agreements, policies, standards:

Applicable safety, health and environmental protection legislation and standards
8. Theory: rules, principles, laws:

Applicable welding theory covering resistance welding processes

UNIT STANDARD DEVELOPMENTAL OUTCOME

N/A

UNIT STANDARD LINKAGES

N/A

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems

Recognise problems while welding and respond appropriately

Defects are recognised and corrected

Hazards are recognised and prevented

UNIT STANDARD CCFO WORKING

Work together with others

Co-ordinate efforts of workgroup

Coach and guide workgroup members

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

Record information on work done

Report outcome of work to appropriate personnel

UNIT STANDARD CCFO SCIENCE

Use science and technology effectively and critically

Understanding of gas mixture, flame settings and gas pressures and their effects on types of metals

UNIT STANDARD CCFO DEMONSTRATING

Demonstrate an understanding of the world as a set of related systems

Role of resistance welding in the fabrication industry

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

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.

NOTES TO ASSESSORS:

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.

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Elective	57881	National Certificate: Welding Application and Practice	Level 2	NQF Level 02	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual
Elective	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.

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