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Q. Show the Sources of Ignition?
Sources of Ignition - Possible sources of ignition include the following:
• Electrical: Sparks or arcs may occur when current carrying contacts are separated or through static electricity discharge.
• Naked Lights: e.g. fired heaters, fires, smoking, hot work, or gas welding
• IC Engines: Spark-ignition systems or exhaust hot spots.
• Spontaneous Combustion: Pyrophoric materials or vapour leakage at temperatures above AIT.
• Frictional Ignition: Grit blasting, power tool grinding or mechanical failure of rotating machinery.
• High Temperature Surfaces: Transfer lines, HP steam lines or other hot surfaces.
Draw the Gas welding System and label its parts. Illustrate the several types of flames used in gas welding along with temperature range.
steel ball v/s cotton ball of same weigt which is easy to lift
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