SAQA

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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Weld workpieces with the gas metal arc welding process in all positions

SAQA US ID	UNIT STANDARD TITLE
12255	Weld workpieces with the gas metal arc welding process in all positions
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 3	NQF Level 03	15
REGISTRATION STATUS		REGISTRATION START DATE	REGISTRATION END DATE	SAQA DECISION NUMBER
Passed the End Date - Status was "Reregistered"		2006-11-07	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
243064	Weld carbon steel workpieces, using the gas metal arc welding process in all positions	Level 2	NQF Level 02	15

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 gas metal arc welding equipment

Select, assemble and conduct pre operational checks of gas metal arc welding equipment

Prepare work pieces prior to welding

Weld workpieces

Inspect welded work piece for defects in compliance with drawing specifications

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

National Certificate in Welding Application and Practice NQF level 2.

UNIT STANDARD RANGE

Scope:

Range of materials used is: Low and medium carbon steel as well as stainless steel (over3mm thick)

Context:

All work undertaken must comply with Occupational Health and Safety Act

All work done must comply with worksite practices

All work done under limited supervision

Level:

Level (for level 3)
A learning programme leading to the award of this unit standard should develop learners who demonstrate:
(a) A range of well-developed skills
(b) An ability to offer a significant choice of procedures
(c) Some relevant theoretical knowledge
(d) An ability to interpret available information
(e) An ability to respond to familiar problems
(f) An ability to function with significant responsibility

Specific Outcomes and Assessment Criteria:

SPECIFIC OUTCOME 1

Describe and assemble the gas metal arc welding equipment.

OUTCOME RANGE

Parts includes: Welding machine, earth clamp, welding cable, flow meter, carbon dioxide gas, gas feeder hose, jubilee clamps and welding filler material.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. The importance of correct assembly of the gas metal arc welding equipment, and the consequences of incorrect assembly, is explained with reference to the manufacture's requirements.

ASSESSMENT CRITERION 2

2. Basic and major components of the gas metal arc welding equipment are identified and the explanation of function and purpose is correct in terms of manufacture's requirements and standards.

ASSESSMENT CRITERION 3

3. Parts and components correctly identified and the implications for incorrect identification is explained.

ASSESSMENT CRITERION 4

4. Terms and definitions used are consistent with generally accepted welding terminology as recorded in international welding standards.

SPECIFIC OUTCOME 2

Select, set up and conduct pre operational checks of gas metal arc welding equipment.

OUTCOME RANGE

Resources to include: manufacture's operational and specifications manual, worksite practices and safety and environmental issues

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Verification of identification and selection of gas metal arc welding equipment as specified on welding procedure specification.

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 manufacture's specifications.

ASSESSMENT CRITERION 4

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

SPECIFIC OUTCOME 3

Prepare work pieces prior to welding.

OUTCOME RANGE

Resources include: Worksite practices, tools, equipment, safety requirements and welding consumables in relation to job requirements

Materials: Low and medium carbon steel

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.

SPECIFIC OUTCOME 4

Weld workpieces.

OUTCOME RANGE

Material type to be welded:

Low and medium carbon steels over 6mm thick

Heat input, metal transfer mode, electrode size, joint preparation, welding technique, consumable handling and gas shielding.

Resources include:
Welding equipment, tools, protective clothing and equipment, welding procedure specification, materials as specified on drawings and weld filler material

Welding positions:
Materials up to 6mm thick, AWS (American Welding Society) positions 1F, 2F, 3F, 4F, 1G, 2G, 3G, 4G, 6G, ( fillet welds :flat, horizontal, vertical, overhead, Butt welds: flat, horizontal, vertical, overhead)

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Welding filler material selected as specified on welding procedure specifications.

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 5

5. Welding parameters are established to an approved welding procedure specification (WPS).

ASSESSMENT CRITERION 6

6. Potential causes for weld imperfections are identified prior to welding and action taken meets WPS.

SPECIFIC OUTCOME 5

Inspect welded work piece.

OUTCOME RANGE

Procedures include: Worksite practices, inspection methods (visual only), and cleaning procedures.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. All welding spatters removed as specified in cleaning procedure.

ASSESSMENT CRITERION 2

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

ASSESSMENT CRITERION 3

3. Visual Inspection methods and procedures selected are conducive to job requirements and in accordance with ISO417 welding standards.

ASSESSMENT CRITERION 4

4. Documentation completed as reflected in worksite practices.

SPECIFIC OUTCOME 6

Care and store welding consumables and equipment.

OUTCOME RANGE

Tools and equipment cared for is limited to defect reporting and stored in a usable condition for next user.

Welding consumables stored and marked with identification label, which indicate item number and type/colour coding used for identification purposes.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Tools and equipment care for as per worksite practices.

ASSESSMENT CRITERION 2

2. Tools and equipment stored to conform to worksite practices and procedures.

ASSESSMENT CRITERION 3

3. Welding consumables stored in accordance with worksite practices and 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

Names & functions of:

Equipment

Electrodes

Personal protective equipment

Attributes, descriptions, characteristics & properties:

Types of steel

Common defects

Hazards

Welding processes

Sensory cues

Smell indicating overheating equipment

Purpose of:

Manual metal arc welding

Safety checks

Reporting incidents and conditions

Checking completed weld

Processes, events, causes and effects, implications:

Causes of hazards and responses to them

Causes of defects and responses to them

Basic welding processes

Implications of not preparing workpiece before welding

Procedures and techniques:

For eliminating, isolating or minimising welding hazards

Procedures for preparing materials before welding

Safety procedures

Quality procedures

Recording and reporting procedures

Maintenance procedures

Regulations, legislation, agreements, policies, standards:

Applicable safety, health and environmental protection legislation and standards

Theory: rules, principles, laws:

Applicable to properties of materials

Relationships, systems:

Relationship between grades, section thickness and mechanical properties of steel and welding parameters

Relationship of the mechanical properties of welded joints with carbon content and cooling rate following welding

Critical Cross-field Outcomes (CCFO):

UNIT STANDARD CCFO IDENTIFYING

Identify and solve problems:

Recognise problems of equipment and process while welding and respond appropriately

Defects are recognised and corrected

Hazards are recognised and preventative action taken

UNIT STANDARD CCFO WORKING

Work together with others:

Contribute to workgroup efforts

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 outcome of work

Report outcome of work to appropriate personnel

UNIT STANDARD CCFO SCIENCE

Use science and technology effectively and critically:

Properties of metals

Electrical and mechanical principles

Principles of expansion and contraction

UNIT STANDARD CCFO DEMONSTRATING

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

Explain the relationship between the physical properties and the weldability of the material

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 243064, which is "Weld carbon steel workpieces, using the gas metal arc welding process in all positions", Level 2, 15 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	24213	National Certificate: Welding Application and Practice	Level 3	NQF Level 03	Passed the End Date - Status was "Registered"	2006-12-03	MERSETA
Elective	58011	National Certificate: Acoustic Piano Back-framing	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2023-06-30	CATHSSETA
Elective	50543	National Certificate: Small Craft Construction	Level 3	NQF Level 03	Passed the End Date - Status was "Registered"	2009-08-31	Was MERSETA until Last Date for Achievement
Elective	49739	Further Education and Training Certificate: Firearms Maintenance	Level 4	NQF Level 04	Passed the End Date - Status was "Reregistered"	2023-06-30	SAS SETA
Elective	22871	National Certificate: Engineering Fabrication (light or heavy)	Level 4	NQF Level 04	Passed the End Date - Status was "Reregistered"	2007-08-16	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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