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Case 60: Socket-weld failures

01.01.2011  |  Sofronas, T.,  Consulting Engineer, Houston, Texas

A risk analysis can determine which critical welds to repair

Keywords: [welding] [pipe] [corrosion]

A new plant was constructed; it contained over 10,000 socket welds. Socket welding (Figs. 1 and 2) is one of a number of methods used for making piping connections; they are plain-fillet welds arranged for greater ease of alignment and welding. Used for nominal pipe sizes (NPSs) 4-in. and smaller, they are favored for new projects that make use of prefabricated piping. 

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Good article. To avoid the issues with human error as per socket gap, it is much better to have butt welds.
It is also cost effective.

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