Job Description (JD)
| Nama Program | OPERASI TEKNOLOGI KIMPALAN ARKA [C259-008-3:2025] |
|---|---|
| Kod CU | C259-008-3:2025-E02 |
| Competency | Elektif |
| Tajuk CU | Perform combination GTAW & SMAW 6GC butt welding (carbon steel) |
| Penerangan CU | Perform combination GTAW & SMAW 6GC butt welding (carbon steel) describes the competency in utilizing both welding processes to create robust and durable welds at the joints where two sections of pipe are joined end-to-end. In the 6GC position, the pipe is fixed at a 45-degree angle, which presents unique challenges as the welder must work in both vertical and overhead orientations. The process typically begins with GTAW for the root and hot pass, utilizing a non-consumable tungsten electrode that provides a precise and controlled arc, ensuring deep penetration and a strong initial weld. Following this, SMAW is employed for the fill and cap passes, where a coated consumable electrode melts to provide filler material while offering protection to the weld pool from contamination. This combination not only enhances weld quality by ensuring strong penetration, but it also increases efficiency in production rates. The 6GC involves the pipe being positioned at a fixed 45-degree angle, where the welding is performed in an uphill direction. This position combines the complexities of welding in multiple orientations, including overhead, vertical, horizontal, and flat, requiring welders to be adept in various techniques. The unique angle and fixed nature of the joint add significant challenges, as welders must control the weld pool meticulously to avoid issues such as sagging or insufficient fusion. The person who is competent in this CU should be able to carry out combination GTAW & SMAW 6GC welding requirements preparation, carry out combination GTAW & SMAW 6GC welding and carry out combination GTAW & SMAW 6GC visual inspection. The outcome of this CU is the creation of high-quality welds characterized by exceptional structural integrity and uniform, consistent weld beads. In this challenging position, where the pipe is fixed at a 45-degree angle, welders must demonstrate advanced skill and precision as they navigate the complexities of welding in multiple orientations. The combination GTAW & SMAW techniques allows for effective control of heat input and weld pool, ensuring that the welds are free from defects while adhering to code and standards. The weld metal produced exhibits essential properties, including high tensile strength, good ductility, adequate hardness, and impact toughness, which are critical for the durability and reliability of the welded joints, especially in applications where safety is paramount. Achieving proper fusion and penetration ensures a strong bond with the base metal, vital in a 6GR configuration. |
| Tempoh Latihan | 92 |
| Objektif Pembelajaran | The learning outcomes of this competency are to enable the trainees to perform combination GTAW & SMAW process in 6GC butt weld on carbon steel according to approved Welding Procedure Specification (WPS) and work instruction. Upon completion of this competency unit, trainees should be able to: 1. Carry out combination GTAW & SMAW 6GC welding requirements preparation. 2. Carry out combination GTAW & SMAW 6GC welding. 3. Carry out combination GTAW & SMAW 6GC welding inspection. |
| Pra-Syarat | Not Available |