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Welding Safety
Welding Safety with Gas Cylinders On an oxyacetylene system there will be three types of valves, the cylinder valve, the regulator valve, and the torch valve. There will always be a set of three valves for each system, since the gas in the cylinders is…
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Safety and Precautions during welding
As in any welding process, safety precautions are very important. All information relating to the safe operation of the welding equipment and process must be fully understood before beginning work. A careless welder who does not observe some simple rules can cause a dangerous situation…
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Pipe Line Isometric Drawings and P & ID Drawings
Pipe Isometrics : Are drawings which shows details of Process pipe lines in a single line presentation , with details of pipes, pipe connections ( valves, flanges, nipples, reducers, end cap, elbow, etc), along with the dimensions and direction of pipe line. Example of a…
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Weld crack
Weld crack 1.1. Cracking: If a weld crack is found, it must be removed and magnetic-particle inspection performed to ensure every point has been removed before re-welding. Weld Crack can occur on top of a weld…
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Dissimilar metal in TIG Welding process
Why use this TIG welding process: TIG Tungsten Inert Gas otherwise called as GTAW- Gas Tungsten Arc Welding , Involves melting the metal using the arc created by tungsten electrode, The welding can be done with or without filler metal, Argon Gas is used as shielding around…
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WELDING PROCEDURE FOR JOISTS
WELDING FOR JOISTS AND FINISHING OF MACHINING RAILS Unless otherwise authorized by the engineer, any welding to the top flange of steel members for supporting floor form joists and finishing machine rails will not be permitted. Welding of hangers and supports to shear studs will…
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NDT Methods Selection
NDT Method Selection: The NDT (nondestructive testing) methods are: Visual Inspection – VT Liquid Penetrant Testing – LT Magnetic Particle Testing – MT Radiographic Testing – RT Ultrasonic Testing – UT Eddy Current Testing – ET (not used in field inspection) Acoustic Emission Testing –…
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Weld Test Coupon Preparation
Bend Test Coupon Preparation First the centerline on the plate shall be marked. Then another line 1.0 inch above the center line and another line 1 inch below the center line. This is the section that can be used as an alternate coupon in the event…
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