Mechanical Technology PAT GR 12 2022 (Welding and Metalwork) Eng

Downloaded from hlayiso.com MECHANICAL TECHNOLOGY (WELDING AND METALWORK) GUIDELINES FOR PRACTICAL ASSESSMENT TASKS (PAT) GRADE 12 2022 These guidelines consist of 27pages. Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 2 DBE/PAT 2022 NSC TABLE OF CONTENTS PAGE 1. INTRODUCTION/BACKGROUND 3 2. TEACHER GUIDELINES 4 2.1 Administration of PAT 4 2.2 Assessment of PAT 4 2.3 Moderation of PAT 4 2.4 Consequences of absence/non-submission of tasks 4 2.5 Declaration of authenticity 5 3. LEARNER GUIDELINES 6 Instructions to the learner 6 4. SPECIALISATION 7 WELDING AND METALWORK 7 Rocket stove concept designs 8 Examples of quality of welds 9 Rubrics 10 Phase 1 12 Phase 2 15 Phase 3 19 Phase 4 22 Rocket stove totals 25 5. CONCLUSION 26 ANNEXURE A 27 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 3 DBE/PAT 2022 NSC 1. INTRODUCTION/BACKGROUND The 18 Curriculum and Assessment Policy Statement subjects which contain a practical component all include a practical assessment task (PAT). These subjects are:  AGRICULTURE: Agricultural Management Practices, Agricultural Technology  ARTS: Dance Studies, Design, Dramatic Arts, Music, Visual Arts  SCIENCES: Computer Applications Technology, Information Technology, Technical Sciences, Technical Mathematics  SERVICES: Consumer Studies, Hospitality Studies, Tourism  TECHNOLOGY: Mechanical Technology, Civil Technology, Electrical Technology, and Engineering Graphics and Design A practical assessment task (PAT) mark is a compulsory component of the final promotion mark for all learners offering subjects that have a practical component and counts 25% (100 marks) of the end-of-year examination mark. The PAT is implemented across the first three terms of the school year. This is broken down into different phases or a series of smaller activities that make up the PAT. The PAT allows for learners to be assessed on a regular basis during the school year and it also allows for the assessment of skills that cannot be assessed in a written format, e.g. tests or examinations. It is therefore important that schools ensure that all learners complete the practical assessment tasks within the stipulated period to ensure that learners are resulted at the end of the school year. The planning and execution of the PAT differs from subject to subject. The PAT allows the teacher to directly and systematically observe applied competence. The PAT comprises the application/performance of the knowledge, skills and values particular to that subject and counts 25% of the total promotion/certification mark out of 400 for the subject. The PAT is implemented across the first three terms of the school year. Any profession requires of its members a thorough grounding in both theory and practice and MECHANICAL TECHNOLOGY is no exception. It is emphasised that the goal of the practical assessment task is to produce a skilled learner in each specialisation field. A nation's true wealth is in its manpower and education that should aim to develop the talents of a learner so that he/she can contribute to the well-being of the society by using and developing scientific and technological resources. To prepare a learner in the MECHANICAL TECHNOLOGY specialisation fields, one must focus on the following:  An attitude where the learner can selectively use ideas, gather evidence and facts, to drawing logical conclusions to put them to good use creatively and with imagination;  A capability to express ideas and information clearly by speech, writing, drawing and manufacturing; and  A willingness and capability to accept and exercise responsibility, to make decisions, and to learn by experience. Attributes such as these cannot all be achieved in a classroom. A sound knowledge of engineering sciences is essential to equip the MECHANICAL TECHNOLOGY learner with the necessary practical capabilities for the required processes. Practical training is the application of acquiring essential skills to bridge between trade theory and practice. Practical application in the workshop must therefore be made an interesting and challenging experience to develop the learner physically and mentally. The learner must show his/her initiative, curiosity and persistence in learning. In order to stimulate and develop self-confidence the granting of some degree of responsibility during the practical application is very important. Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 4 DBE/PAT 2022 NSC 2. TEACHER GUIDELINES 2.1 Administration of the PAT Teachers are requested to make copies of the different specialisation PAT documents. These documents need to be handed out to the learners at the beginning of the year. The practical assessment task for Grade 12 is externally set, internally assessed and externally moderated. Teachers must attach due dates for the different facets of the PAT (refer to the CAPS document). In this manner, learners can easily assess their progress. When formal assessment takes place it is the responsibility of the teacher to administer assessment. The PAT should be completed within the first three terms. The PAT should be completed under controlled conditions (refer to Mechanical Technology SPECIALISATION: CAPS Grades 10–12). Teachers MUST build a prototype of the task in order to be able to demonstrate to the learners what the final product will look like. It will guide the learners with visual presentation. It provides the teacher with insight into possible challenges regarding machines, equipment or material and what possible manufacturing procedures he/she needs to follow in the workshop in order to complete the PAT. 2.2 Assessment of PAT Frequent and developmental feedback is needed to ensure the necessary guidance and support for the learners. Both formal and informal assessment should be conducted to ensure that the embedded skills are developed. Informal assessment can be conducted only to monitor the progress of the learners. Formal assessment should always be conducted and recorded by the teachers. On completion of each phase in each term, the marks for the completed phase need to be recorded on the school administration system. 2.3 Moderation of PAT The tasks, projects, assessment criteria as well as the mark sheets must be presented to the moderator during moderation of the PAT. The moderator should be able to call on a learner to explain and demonstrate the functions, principles and skills during the moderation process. On completion the moderator will, if necessary, adjust the marks of the group upwards or downwards depending on the decision reached as a result of moderation. Tasks must be clearly marked with the correct initials and surname of each learner. 2.4 Consequences of absence/non-submission of tasks. If a learner's practical assessment task is incomplete or unavailable with a valid reason, the learner may be given three weeks before the commencement of the final end-of-year examination to submit the outstanding task. Should the learner fail to fulfil the outstanding PAT requirement, such a learner will be awarded a zero mark for that PAT component. A learner's results are regarded as incomplete if he/she does not offer any component of the PAT task. He/She will be given another opportunity based on the decision of the head of the assessment body. Should the learner fail to fulfil the outstanding PAT requirement, the marks for these components will be omitted and the final mark for Mechanical Technology will be adjusted for promotion purposes in terms of the completed tasks. If any tasks are still outstanding, the learner runs the risk of not being resulted at the end of the year. Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 5 DBE/PAT 2022 NSC 2.5 Declaration of Authenticity NAME OF THE SCHOOL: NAME OF LEARNER: (FULL NAME(S) AND SURNAME) NAME OF TEACHER: I hereby declare that the project submitted for assessment is my own, original work and has not been previously submitted for moderation. SIGNATURE OF LEARNER DATE As far as I know, the above declaration by the learner is true and I accept that the work offered is his or her own. SIGNATURE OF TEACHER DATE SCHOOL STAMP Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 6 DBE/PAT 2022 NSC 3. LEARNER GUIDELINES Instructions to the learners  The practical assessment task (PAT) consists of a specialisation task in Welding and Metalwork. The practical work is spread over three terms, as set out in this document. (See CAPS document.)  All tasks must be completed according to the time frames set out in each of the tasks.  Learners are requested to actively engage in all practical assessment tasks.  Learners who are uncooperative will receive demerits or a zero mark for that particular section of the work.  Learners who act unsafely in the workshop and place other learners in danger, will be given additional corrective tasks to improve their safety awareness.  Your task must be fully completed by end of August 2022 in order to be ready for provincial and/or national moderation.  Your task must be clearly marked with your name and surname.  Each term must have a completed phase in order to enter a mark on the working mark sheet and per SAMS. Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 7 DBE/PAT 2022 NSC 4. WELDING AND METALWORK (SPECIFIC) TASK: ROCKET STOVE: Term: 1 to 3 Starting date: January 2022 Completion date: August 2022 Follow the criteria and standards below:  The design of the rocket stove is shown in the given figures.  Keep affordability in mind. (Standard dimensions of sheet metal)  The inside grid/mesh is according to own design. Make drawings and templates.  Overall sizes must be within ±2 mm of the required measurement.  Tools and equipment must not be damaged.  All appropriate safety procedures must be adhered to.  Welded joints must be cleaned of all slag.  After all dimensions have been marked out, record marks.  All edges must be cleaned of burrs.  The project must be well presented. RESOURCES REQUIRED FOR PAT: COMPONENTS MATERIAL DIMENSIONS QUANTITY 1 Base supports 25 x 25 x 3 mm angle iron 350 mm 2 2 Horizontal pipe 100 x 100 x 2 mm square tube 375 mm 1 3 Inside grid support Expanded metal/own design 100 x 100 mm 1 4 Vertical pipe 100 x 100 x 2 mm square tube 400 mm 1 5 Charge pipe 100 x 100 x 2 mm square tube 283 mm 1 According to 6 Transition piece 2 mm sheet metal 4 template 7 Grid and frame 25 x 25 x 3 mm angle iron 2 250 mm 1 Cover flaps 2 mm sheet metal 130 x 130 x 2 mm 3 8 Cover flap hinges Ø10 mm bullet hinges 10 x 60 mm 3 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 8 DBE/PAT 2022 NSC ROCKET STOVE CONCEPT DESIGNS NOTE: The examples below are illustrations for perception only to illustrate the concept of the body design and square-to-square on-set hopper. EXAMPLE 1: BODY DESIGN EXAMPLE 2: HOPPER DESIGN EXAMPLE 3: GRID DESIGN Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 9 DBE/PAT 2022 NSC EXAMPLES OF THE QUALITY OF THE WELDS EXAMPLE 4 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 10 DBE/PAT 2022 NSC RUBRIC FOR CUTTING, WELDING AND PRESENTATION Excellent Good Average Poor Incomplete CATEGORY (5) (4) (3) (2) (1) All parts marked and Nearly all parts marked Most parts marked and Some parts partially Poor and wrongly accurate according to and accurate most accuracy obtained. marked/some accuracy marked/inaccurate. MARKING OF dimensions. dimensions obtained. ± 4 mm deviation from obtained. ± 6 mm deviation from PARTS/PIECES ± 1 mm deviation from ± 2–3 mm deviation from required dimensions. ± 5 mm deviation from required dimensions. required dimensions. required dimensions. required dimensions. All parts cut/drilled Nearly all parts cut/ Most parts marked and Some accuracy obtained Section poorly cut/ CUTTING AND accurately according to drilled accurately. cut/drilled accurately. with some deviation drilled inaccurately or DRILLING dimensions. ± 2–3 mm deviation ± 4 mm deviation from dimensions. wrong dimensions. ± 1 mm deviation. ± 5 mm deviation ± 6 mm deviation No welding defects Neat welding done. Some beading visible. Poor welding done. Bad welding. Many visible. Beading neat Good beading with Presence of some Many welding defects welding defects with no WELDING and complete fusion of some minor defects welding defects. Not visible. Poor or no fusion fusion and holes burned QUALITY metals achieved. All slag visible. Good fusion complete fusion achieved. Some burning through. is removed. achieved. All slag is achieved. All slag is through metal occurred. removed. partially removed. Weld areas are cleanly Nearly all welded areas Most welded areas are Some welded areas are No welded areas cleanly and neatly finished, are cleanly and neatly cleanly and neatly and neatly and cleanly and neatly finished, FINISHING AND ground and painted. finished, ground and finished, ground and finished, ground and ground and painted. PRESENTATION Project presented painted. Project well painted. painted. No complete assembly. excellently. Excellent presented. Functionality Average presentation. Poor presentation with Bad presentation with no functionality obtained. obtained. Project will function. limited functionality. functionality. Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 11 DBE/PAT 2022 NSC FIGURE 1 SHOWS THE ROCKET STOVE FIGURE 1 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 12 DBE/PAT 2022 NSC PHASE 1: HORIZONTAL PIPE AND BASE SUPPORTS January–March 2022 Alternative suggestion: Drill 16 x ø10 equally spaced holes FIGURE 2 HORIZONTAL PIPE FIGURE 3 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 13 DBE/PAT 2022 NSC FIGURE 4 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 14 DBE/PAT 2022 NSC MECHANICAL TECHNOLOGY WELDING AND METALWORK MARK SHEET – BASE SUPPORT AND HORIZONTAL PIPE – PHASE 1 GRADE 12 DATE PROJECT ROCKET STOVE LEARNERS MARKS FACETS 1 2 3 4 5 6 7 8 9 10 Cut angle iron according to 5 BASE measurements SUPPORT Remove all burrs from 5 supports Measure and mark to size 5 375 mm Cut to size 375 mm 5 Measure and cut expanded metal to 100 x 00 mm OR 10 HORIZONTAL Mark 16 x holes to drill PIPE Weld expanded metal into position OR 10 Drill 16 x Ø10 equally spaced holes Weld base supports in 10 position (2 x 5) SUBTOTAL: 50 TOTAL: 50 NAME AND SIGNATURE OF TEACHER NAME AND SIGNATURE OF TECHNICAL DEPARTMENT HEAD NAME AND SIGNATURE OF SUBJECT MODERATOR Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 15 DBE/PAT 2022 NSC PHASE 2: VERTICAL AND CHARGE PIPES April–June 2022 FIGURE 5 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 16 DBE/PAT 2022 NSC FIGURE 6 Copyright reserved Please turn over

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Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 18 DBE/PAT 2022 NSC MECHANICAL TECHNOLOGY WELDING AND METALWORK MARK SHEET – VERTICAL AND CHARGE PIPES – PHASE 2 GRAD 12 DATE E PROJECT ROCKET STOVE LEARNERS MARKS FACETS 1 2 3 4 5 6 7 8 9 10 Measure and mark to length 400 mm and to cut out 10 140 mm (2 x 5) VERTICAL Cut to size 400 mm 5 PIPE Cut out 140 x 100 mm 5 File all burrs 5 Measure and mark to length 5 of 283 mm Measure and mark angle to 5 45° CHARGE Cut to size 283 mm 5 PIPE Cut 45° angle 5 File all burrs 5 Weld vertical and charge 15 pipes (3 x 5) SUBTOTAL: 65 TOTAL: 50 NAME AND SIGNATURE OF TEACHER NAME AND SIGNATURE OF TECHNICAL DEPARTMENT HEAD NAME AND SIGNATURE OF SUBJECT MODERATOR Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 19 DBE/PAT 2022 NSC PHASE 3: COVERS AND GRID July–August 2022 FIGURE 8 FIGURE 9 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 20 DBE/PAT 2022 NSC FIGURE 10 FIGURE 11 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 21 DBE/PAT 2022 NSC MECHANICAL TECHNOLOGY WELDING AND METALWORK MARK SHEET – COVERS AND GRID – PHASE 3 GRADE 12 DATE PROJECT ROCKET STOVE LEARNERS MARKS FACETS 1 2 3 4 5 6 7 8 9 10 Measure and mark to size 5 Cut to required size 5 COVER 1 Bend to required shape 5 Weld corners 5 Weld hinges onto cover 5 Measure and mark to size 5 Cut to required size 5 COVER 2 Bend to required shape 5 Weld corners 5 Weld hinges onto cover 5 Measure and mark to size 5 Cut to required size 5 COVER 3 Bend to required shape 5 Weld corners 5 Weld hinges onto cover 5 Measure and mark frame to size 5 250 mm Measure and mark braces to 5 244 mm Cut to frame to 250 mm 5 GRID Cut bracing to 244 mm 5 Mitre 4 corners (4 x 5) 20 Weld all corners (4 x 5) 20 Weld angle iron braces (5 x 5) 25 SUBTOTAL: 160 TOTAL: 50 NAME AND SIGNATURE OF TEACHER NAME AND SIGNATURE OF TECHNICAL DEPARTMENT HEAD NAME AND SIGNATURE OF SUBJECT MODERATOR Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 22 DBE/PAT 2022 NSC PHASE 4: DEVELOPMENT AN ON-SET HOPPER January–August 2022 FIGURE 12 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 23 DBE/PAT 2022 NSC FIGURE 13 Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 24 DBE/PAT 2022 NSC MECHANICAL TECHNOLOGY WELDING AND METALWORK MARK SHEET – DEVELOPMENT AND ON-SET HOPPER – PHASE 4 GRADE 12 DATE PROJECT ROCKET STOVE LEARNERS MARKS FACETS 1 2 3 4 5 6 7 8 9 10 Template calculations 10 (refer to ANNEXURE A) Marking out of template 5 Cutting of template 5 Transfer of template to plate metal 5 Cutting of transition pieces 20 (4 sides x 5) Welding of transition pieces – 20 Sides 1–4 (4 x 5) Welding of transition piece to vertical 20 pipe (4 x 5) Assembling of vertical to horizontal 20 pipe (4 x 5) Presentation (sanding-finish of 5 product) Presentation (painting product) 5 Functionality 5 SUBTOTAL 120 TOTAL 100 NAME AND SIGNATURE OF TEACHER NAME AND SIGNATURE OF TECHNICAL DEPARTMENT HEAD NAME AND SIGNATURE OF SUBJECT MODERATOR Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 25 DBE/PAT 2022 NSC MECHANICAL TECHNOLOGY WELDING AND METALWORK MARK SHEET – TOTALS GRADE 12 DATE PROJECT ROCKET STOVE TOTALS LEARNERS MARKS FACETS 1 2 3 4 5 6 7 8 9 10 PHASE 1 50 PHASE 2 50 PHASE 3 50 PHASE 4 100 TOTAL: 250 TOTAL 100 PAT MARK: NAME AND SIGNATURE OF TEACHER NAME AND SIGNATURE OF TECHNICAL DEPARTMENT HEAD NAME AND SIGNATURE OF PRINCIPAL NAME AND SIGNATURE OF SUBJECT MODERATOR Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 26 DBE/PAT 2022 NSC 5. CONCLUSION On completion of the practical assessment task learners should be able to demonstrate their understanding of the industry, enhance their knowledge, skills, values and reasoning abilities as well as establish connections to life outside the classroom and address real-world challenges. The PAT furthermore develops learner's life skills and provides opportunities for learners to engage in their own learning. Copyright reserved Please turn over

Downloaded from hlayiso.com Mechanical Technology: Welding and Metalwork 27 DBE/PAT 2022 NSC ANNEXURE A – TEMPLATE CALCULATION (10) NAME AND SURNAME: ________________________________________ EXAMINATION NUMBER: _______________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ _______________________________________________________________________ Copyright reserved