Under Water Welding

Topics: Arc welding, Welding, Gas tungsten arc welding Pages: 1 (346 words) Published: May 10, 2013
Underwater welding,
Underwater welding was invented in Russia in 1932 by Konstantin Konstanovich Khrenov and used it throughout the soviet navy. During WWII, the American Cyril D. Jensen, professor of engineering at Lehigh university, developed the USA’s own underwater welding programs and created 2 U.S. patents in the field. (Agnew, 1999-2013) Under water is a technique that is employed in various engineering projects, where in welding is carried out under the surface of the water. Underwater welding is generally preformed on steel, and needs special diving skills on the part of the training needed for these tasks. Underwater welding is done under water in the ocean and is used when there is a need to repair a ship, oil platforms that are offshore and pipelines. Usually these all need to be repaired using steel only. There are two basic types of underwater welding and these will depend on whether the situation needs a dry welding or a wet welding. These are called hyperbaric welding. Both of these occur underwater but the dry aspect is done through a special pressure chamber that creates the dry environment. This dry mode can be better controlled underwater. This is used when there is a need for very deep water welds and where a high degree of strength is required. Research is being conducted to see whether dry welding can be done at depths of 1000 meters. When dry welding is used, the chamber is filled with a gas mixture has to be used to seal the structure that is being welded. Usually a gas tungsten arc welding is used to make sure that this is a strong weld. For those structures that receive wet underwater welding it is difficult to know whether the weld has worked because the risk that may be involved are difficult to see in the water. Welding is divide into two category’s wet under water welding and dry welding, they are both under the category of hyperbaric. Under water welding is very dangerous. One of the risk of underwater welding is getting...
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