فناوری تعمیرات زیر آب

This book provides an overview of the techniques available to the offshore industry for the joining and repair of offshore structures. The last few years have seen many developments in underwater engineering technology where a wide range of welding techniques, and the necessary associated equipment, are now available for underwater joining procedures in the offshore industry. The extraction of hydrocarbons from offshore reserves is now a worldwide industry, with activity on every continent. There are huge steel and concrete structures standing in 200 metres of water, with more innovative designs, such as tethered platforms capable of operating in deeper waters, and with 1000 metre reserves currently being considered. New materials - stainless steels, duplex stainless steels, aluminium, Monel, coated materials, and non-metallic materials such as reinforced plastics are beginning to be used in significant quantities. Joining and inspection techniques have been greatly developed, and new design concepts have been brought into use. Concentrating on repair technology the author presents a survey of the techniques available for the fabrication, repair and modification of structures underwater. His book is an important reference for those working in the international offshore engineering industry, and will also be of value to universities and training establishments offering courses on marine technology. Annotation, The book provides an comprehensive overview of the techniques available for the joining and repair of offshore structures. Nixon starts with joining systems that do not require welding and then explores the associated engineering systems needed for joining procedures. Topics include pipe handling, hyperbaric chamber design, and principal underwater welding techniques, including wet, one atmosphere, and hyperbaric. Nixon also includes a description of the effects of environmental pressure on the various hyperbaric welding processes. A complete guide to underwater welding, this book also discusses technologies that show promise in the laboratory, but are not currently in use. Nixon provides appendices describing the relevant diving technologies, basic oceanography, and the research methods used in the development of hyperbaric welding Offshore structures, materials and standards The joining of underwater structures without the use of underwater welding Underwater engineering processes required for fabrication operations Underwater welding technology Manual hyperbaric welding techniques Alternatives to saturation diving for deep water applications Alternatives to arc welding for deep water joining operations. From small beginnings on the West Coast of America prior to World War II, the extraction of hydrocarbons from reserves situated offshore has developed into an industry spanning the entire planet, with activity on every continent.