System Displays and Records Real Time Video during Pipe Inspections The

System displays and records real time video during

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System Displays and Records Real-Time Video during Pipe InspectionsOfficial Interpretation: Aluminum Brazing Subject:Temperature Uniformity Re-quirements Code Edition:AWS C3.7M/C3.7:2005Code Provision:Page 4, Subclause 5.3.2(Temperature Uniformity Requirements)Inquiry:Do salt baths for brazing alu-minum having a solidus of less than1120°F have to meet a ±5°F, SAE/AMS2750, Pyrometry, Class 1 temperature uni-formity requirement? Inspection Trends / Winter 2011 13 For info go to Response: Yes.
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Feature By Inspection Trends / January 2011 14 By Albert J. Moore Jr. Other than the measuring tape, the fillet weld gauge is the most used measuring device in the welding inspector’s kit. That is understandable considering the majority of the welds deposited are fillet welds. Yet many people measure the size of the fillet weld incorrectly. The principle of the fillet gauge is pretty simple. The fillet weld has a cross section that is essentially a triangle. If the two members being joined are at right angles to each other, the cross section of the fillet weld resembles an isosceles right triangle — Fig. 1. One basic assumption is that the fillet weld is fused to the joint root, but not necessarily beyond. With those two assumptions in place, i.e., the cross section of the fillet weld is an isosceles right triangle and it has fusion to the root, we can establish a relationship between the length of the fillet weld legs and the theoretical throat. We need to know the dimension of the throat because it is the “weak link”; that is, it represents the shortest failure path through the cross section of the weld. With the two conditions noted in place, we can define the size of the fillet weld as the largest inscribed isosceles right triangle. Inspectors usually use a leaf-type fillet weld gauge to measure the size of fillet welds. The gauges come as a set of individual gauges that are used to size fillet welds. I did not say “measure” fillet welds because the leaf-type gauge only indicates whether the weld is less than, larger than, or the same size as the gauge. The inspector checks the size of
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