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American Welding Society (AWS). 2000. 35p. This pocket handbook provides a convenient source for the most common base metal and weld metal discontinuities found by effective VT. The handbook is arranged by discontinuity type, including applicable VT detection methods, and likely causes and remedies in addition to suggested repair methods. Contents: Basic Safety Precautions; Visual Inspection Notes; Discontinuity Types; Fillet Weld Measurement; Dimensional Considerations; Plate and Pipe Dimensions; Metric Conversion Table; Nondestructive Testing Symbols
E-Book Content
$12
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The Everyday Pocket Handbook for Visual inspection and Weld DiscontinuitiesCauses and Remedies
Copyright American Welding Society Provided by IHS under license with AWS No reproduction or networking permitted without license from IHS
Compiled as a useful tool for on-the-job welding personnel by the Licensee=Aramco HQ/9980755100 AWS Product Development Committee Not for Resale, 01/08/2006 05:08:07 MST
(Edited by Ted V. Weber, Principal Consultant, Weber & Associates)
O 1996 by American Welding Society. All rights reserved Printed in the United States of America Reprinted 2000
NOTE: Although care was taken in choosing and presenting the data in this guide, AWS cannot guarantee that it is enor free. Further, this guide is not intended to be an exhaustive treatment of the topic and therefore may not include aü available information, including with respect to safev and health issues. By publishing this guide, AWS does not insure anyone using the information it contains against any liability or injury to property or person arising from that use. --`,,,,``,,,,,,````,,``,,,`,,`-`-`,,`,,`,`,,`---
Copyright American Welding Society Provided by IHS under license with AWS No reproduction or networking permitted without license from IHS
2 Licensee=Aramco HQ/9980755100 Not for Resale, 01/08/2006 05:08:07 MST
Table of Contents
Copyright American Welding Society Provided by IHS under license with AWS No reproduction or networking permitted without license from IHS
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Licensee=Aramco HQ/9980755100 Not for Resale, 01/08/2006 05:08:07 MST
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Basic Safety Precautions........................................... Visual Inspection Notes ............................................. Discontinuity Types: Cracks .................................................................. Inclusions ........................................................... Incomplete Fusion.............................................. Incomplete Joint Penetration ............................. Overlap ............................................................... Porosity .............................................................. Undercut............................................................. Weld Profiles ...................................................... Fillet Weld Measurement ........................................ Dimensional Considerations................................... Plate and Pipe Dimensions ...................................... Metric Conversion Table .................................... Nondestructive Testing Symbols.............................
Basic Safety Precautions Electrical Hazards. Electric shock can kill. However, it can be avoided. Live electrical parts should not be touched. The manufacturer’s instructions and recommended safe practices should be read and understood. Faulty installation, improper grounding, and incorrect operation and maintenance of electrical equipment are all sources of danger.
Burn Protection. Molten metal, sparks, slag, and hot work surfaces are produ