The Welding NC I (SMAW) Qualification consists of competencies that a person must achieve to weld carbon steel plates components as specified by layout, blueprints, diagrams, work order, welding procedure or oral instructions using SMAW welding equipment.
TRAINEE ENTRY REQUIREMENTS
- Trainees or students wishing to gain entry into this course should possess the following requirements:
- can communicate either oral and written
- physically and mentally fit with good moral character
- can perform basic mathematical computation
TO BE COMPETENT ONE MUST PASS THESE CORE COMPETENCIES:
Weld Carbon Steel Plates Using SMAW
Assessment requires evidence that the candidate
Performance Criteria:
- welded carbon steel plates in 2G and 3G positions to acceptable standard following the approved WPS.
Perform root pass
- Root pass is performed in accordance with WPS and/or client specifications.
- Task is performed in accordance with company or industry requirement and safety procedure.
- Weld is visually checked for defects and repaired, as required
- Weld is visually acceptable in accordance with applicable codes and standards
Clean root pass
- Root pass is cleaned and free from defects and discontinuities
- Task is performed in accordance with approved WPS
Weld subsequent/ filling passes
Perform cappinG
- Subsequent/ filling passes is performed in accordance with approved WPS
- Weld visually is checked for defects and repaired, as required
- Weld is visually acceptable in accordance with applicable codes and standards
- Capping is performed in accordance with approved WPS and/or client specification
- Weld is visually checked for defects and repaired, as required
- Weld is visually acceptable in accordance with applicable codes and standards
WPS Requirements
1.1 Welding positions 1.1.1 1F, 2F, 3F,4F 1.1.2 1G, 2G, 3G
1.2 Material thickness 1.2.1 1.6mm – unlimited (plate)
1.3 Type of material 1.3.1 Carbon or mild steel
1.4 Type and size of mild steel electrode
1.5 Travel speed 1.6 Current setting (polarity, amperage, voltage)
1.7 Preheating/post weld heating treatment (PWHT) 1.8 Joint preparation
DEFINITION OF TERMS
1) base metal – the metal that is to be worked or welded
2) weld bead – a deposit of filler metal from a single welding pass
3) weld defect– an irregularity that spoils the weld appearance or impairs the effectiveness of the weld or weldment by causing weakness or failure
4) weld line – the junction of weld metal and the base metal, or the junction of base metal parts when filler metal is not used
5) weldment – an assembly or structure whose component parts are joined by welding
6) welding – joining two metals by applying heat to melt and fuse them, with or without filler metal
7) welding electrode – the current-carrying rod used to strike an arc between rod and metal
8) welding rod – filler metal in the form of a rod or heavy wire
9) welding torch –a gas mixing and burning tool for the welding of metal
Method of assessment Competency must be assessed through:
- Observation and interview
- Demonstration and interview
- Written test
- Portfolio
SMAW 2 reviewer word form:
SMAW nc1 reviewer doc.
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