SAQA

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SOUTH AFRICAN QUALIFICATIONS AUTHORITY

REGISTERED UNIT STANDARD THAT HAS PASSED THE END DATE:

Remove material with the shields metal arc gouging process

SAQA US ID	UNIT STANDARD TITLE
14695	Remove material with the shields metal arc gouging 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 3	NQF Level 03	8
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 and assemble the air-carbon arc gouging equipment

Select, assemble and conduct pre operational checks on air-carbon arc gouging equipment

Gouge workpieces

Inspect gouged work pieces

Care and store gouging 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 (over 6mm 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

Interpret the fundamental principles of the shielded metal arc gouging process.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Explain the working principles of the shielded metal arc gouging process and methods of application

ASSESSMENT CRITERION 2

2. Describe potential gouging hazards and measures taken to eliminate, minimise or isolate such hazards

ASSESSMENT CRITERION 3

3. Gouging terminology and definitions used are consistent with accepted international standards

ASSESSMENT CRITERION RANGE

Be knowledgeable with regard to the process limitations (suitable for horizontal and down hand positions)

Hazards to be identified include toxic fumes, arc radiation, fire hazards and electrical shocks)

SPECIFIC OUTCOME 2

Identify, select and set up gouging equipment.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Identify and select tools, equipment and consumables in accordance to job requirements

ASSESSMENT CRITERION 2

2. Equipment is prepared and set up in accordance with manufacturer's guidelines and the implications of incorrect set up procedures are explained

ASSESSMENT CRITERION 3

3. Conduct pre-operational checks in accordance with manufacturer's guidelines and worksite procedures

ASSESSMENT CRITERION RANGE

Power source selection in accordance to gouging consumable specifications and job requirements (sufficient current output range, adequate open circuit voltage an duty cycle)

Unsafe and defective tools and equipment to be handled in accordance to worksite procedures

Gouging consumables are identified in accordance to international identification

Current type, current settings and polarity selection on power source to be done according to gouging consumable specifications

SPECIFIC OUTCOME 3

Gouge material.

ASSESSMENT CRITERIA

ASSESSMENT CRITERION 1

1. Material preparation is conducted according to worksite procedures

ASSESSMENT CRITERION 2

2. Metal is removed by gouging as per job specification and worksite specification

ASSESSMENT CRITERION 3

3. Material is cleaned after gouging in accordance to job specifications

ASSESSMENT CRITERION 4

4. Gouged areas are inspected to ensure that quality standards are attained as stipulated in job specifications

ASSESSMENT CRITERION RANGE

Material to be gouged: Low carbon steel

ASSESSMENT CRITERION 5

5. Anticipate, identify and solve problems to the gouging process

ASSESSMENT CRITERION 6

6. Inspection methods and procedures selected are conducive to job requirements

ASSESSMENT CRITERION RANGE

Inspection methods and procedures may Include visual inspection and non-destructive inspection by means of liquid penetrant equipment

SPECIFIC OUTCOME 4

Care and store gouging consumables and equipment.

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. Gouging consumables stored in accordance with worksite practices and procedures

ASSESSMENT CRITERION RANGE

Caring and storage procedures include sound housekeeping procedures

ASSESSMENT CRITERION 4

4. The consequences of inadequate caring and storage procedures for equipment, tools and consumables are explained

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 & functions of:

Types of electrodes

Types of nozzles

Equipment

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

Types of metals

Features of oxy-fuel gas and air-carbon arc

Gouging defects and their causes

Gouging parameters

Consumables

Hazards

Different sizes and types of electrodes
3. Sensory cues

Sound of escaping gas indicating leaks

Smell indicating gas leaks

Smell indicating overheating equipment
4. Purpose of:

Specific worksite safety practices

Use and care of appropriate personal protective equipment

Pressure regulators

Maintenance of nozzles

Quality control measures

Safety checks

Preparation of materials

Selection of appropriate consumables
5. Processes, events, causes and effects, implications:

Causes of hazards

mplications of ignoring gouging defects

Implications of unsafe work practices

Implications of not preparing workpiece before gouging

Effect on gouge quality of incorrect gouging parameters
6. Procedures and techniques

Set up procedures for gouging equipment

Methods of safe and efficient positioning and support

Safety procedures

Quality procedures

Recording and reporting procedures
7. Regulations, legislation, agreements, policies, standards

Company quality standards

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

Basic principles of oxy-fuel gas and air carbon arc processes

Safety rules
9. Relationships, systems:

Relationship of oxy-fuel and air-carbon arc processes to gouging of materials.

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 gouging metals and respond appropriately

Recognise and correct defects

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

Visual examination of gouges for defects

UNIT STANDARD CCFO COMMUNICATING

Communicate effectively

Record information on outcome of work and provide feedback to appropriate personnel

UNIT STANDARD CCFO SCIENCE

Use science and technology effectively and critically

Understanding of oxy-fuel and air-carbon arc processes

UNIT STANDARD CCFO DEMONSTRATING

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

Relationship between gouging electrode and depth of gouge

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.

Assessment Tools
These tools may include the following:

In-situ (on-the-job) observations

Role-play simulations

Structured group discussions

Written reports (e.g. tests, exams, case studies, projects, registers, logbooks, workbooks)

Verbal report backs (presentations)

Portfolios of evidence

Projects

Experiential learning

Working in teams

Supplementary Material

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.

Suplementary Material

Resource material as registered by NSB 06 and accredited by relevant
ETQA

Definition of Terms:

Terms have been clarified as far as possible through the use of range statements.

QUALIFICATIONS UTILISING THIS UNIT STANDARD:

	ID	QUALIFICATION TITLE	PRE-2009 NQF LEVEL	NQF LEVEL	STATUS	END DATE	PRIMARY OR DELEGATED QA FUNCTIONARY
Elective	58720	National Certificate: Engineering Fabrication	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual
Elective	24213	National Certificate: Welding Application and Practice	Level 3	NQF Level 03	Passed the End Date - Status was "Registered"	2006-12-03	MERSETA
Elective	57886	National Certificate: Welding Application and Practice	Level 3	NQF Level 03	Passed the End Date - Status was "Reregistered"	2023-06-30	As per Learning Programmes recorded against this Qual

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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