El directorio enciclopédico desde la Wikipedia.
Underwater welding refers to a number of distinct welding processes that are performed underwater.[1][2] The applications of underwater welding are diverse—it is often used to repair ships, offshore oil platforms, and pipelines. Steel is the most common material welded. The two main categories of underwater welding techniques are wet underwater welding and dry underwater welding, both are classified as hyperbaric welding. For deepwater welds and other applications where high strength is necessary, dry underwater welding is most commonly used. Research into using dry underwater welding at depths of up to 1000 m are ongoing.[3] In general, assuring the integrity of underwater welds can be difficult (but is possible using various nondestructive testing applications), especially for wet underwater welds, because defects are difficult to detect if the defects are beneath the surface of the weld. dustin did this
[edit] Wet underwater weldingIn wet hi [edit] RisksThe risks of underwater welding include the risk of electric shock to the welder. To prevent this, the welding equipment must be adaptable to a marine environment, properly insulated and the welding current must be controlled. Commercial divers must also consider the safety issues that normal divers face; most notably, the risk of decompression sickness following saturation diving due to the increased pressure of inhaled breathing gases.[4] Another risk, generally limited to wet underwater welding, is the buildup of hydrogen and oxygen pockets, because these are potentially explosive. Many divers have reported a metallic taste that is related to the breakdown of dental amalgam.[5][6][7] There may also be long term cognitive and possibly musculoskeletal effects associated with underwater welding.[8] [edit] References
[edit] External links
Directorio de Enlaces Directorio dmoz Directorio espejo dmoz Pedro Bernardo | ||||||||||||||||||||||||||
