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Monday, April 27, 2020

SMAW NC I assessment tips and pointers free download

SHIELDED METAL ARC WELDING (SMAW) I
 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
  • welded carbon steel plates in 2G and 3G positions to acceptable standard following the approved WPS.
Performance Criteria:

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
  • 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  
Perform cappinG

  • 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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