Sri Lanka NVQ Level 3 Welder Written Examination case studies
Sri Lanka NVQ Level 3 Welder Written Examination · Put your knowledge to work in context.
The Sri Lanka NVQ Level 3 Welder qualification is a National Vocational Qualification awarded under the TVEC framework, recognising that a welder can carry out routine fabrication and repair work to a supervised trade standard. The written paper tests the theory that sits behind competent hand skills, so it suits candidates who already work in workshops, training centres or fabrication yards and want their competence formally certified, as well as apprentices preparing for trade assessment. The Sri Lanka NVQ Level 3 Welder Written Examination case studies are 5 cases and about 2,941 words.
1Confined-Space Welding Inside a Drained Water Tank
An independent workshop is repairing a 5 m³ mild steel water tank that has been in service for eight years. The tank is 2.0 m long, 1.5 m wide and 1.2 m high, and the only access is a 450 mm × 350 mm hatch on the top.
620 words, about 3 min2Reading an Intermittent Fillet Weld Symbol on a Base Frame
A fabricator is making a base frame from 100 × 100 × 8 mm mild steel angle and 10 mm mild steel plate. On the drawing, the joint between the angle and the plate carries a fillet weld symbol on the solid reference line.
620 words, about 3 min3Bowing of a 1 m × 1 m Plate After Butt Welding
A 1,000 mm × 1,000 mm flat panel is made by butt welding two 500 mm × 1,000 mm pieces of 6 mm mild steel plate. The joint is a single-V butt weld with a 60° included angle, 2 mm root gap and 1 mm root face.
582 words, about 3 min4Ordering Electrodes for Twenty Frames with an 8 mm Fillet
A workshop has an order for 20 identical mild steel frames. Each frame has four fillet welds, each 750 mm long, specified on the drawing as an 8 mm leg length.
507 words, about 3 min5Porosity and Spatter in CO2 Gas-Shielded Welding
A workshop is MAG welding 6 mm mild steel plate in the flat position with 1.2 mm ER70S-6 solid wire and CO2 shielding gas. The machine is set at 180 A, 22 V, DCEP, wire feed speed 6.0 m/min, gas flow 8 L/min, and contact-tip-to-work distance about 22 mm.
612 words, about 3 min