Underwater welders use one of these helmets depending on the project: Some of these welding screens flip up or down like a welding hood, and they come in all different shades. Most use the same diving helmet that they would on a regular commercial dive, with one addition:Ī welding screen that attaches to the front of their mask for eye protection. Underwater welding helmets serve this purpose, in addition to allow breathing for the welder-diver. On the surface, welding helmets (hoods) protect the welders’ eyes and face during a weld job. Underwater welders need a reliable diving helmet for their work. Diving Helmet: The Eyes & Ears of Hyperbaric Welding Projects To properly weld underwater, a commercial diver uses five main tools:ġ. Only after successfully completing these stringent safety tests, the interior, diving tanks, and other components will be installed to complete the submersible.Also, because most underwater welders weld topside, it’s important to understand how their tools function differently in a watery environment. The complete pressure vessel then undergoes a hydrostatic pressure test that simulates multiple dives – all deeper than the designated maximum operating depth of the submarine. Once the titanium components are ready, the acrylic windows are installed to complete the pressure vessel. The end result is subject to further testing and examination. Upon completion of the welding, every join gets x-rayed for inspection. DNV GL also oversees and scrutinizes all welding procedures to ensure safety. After further material and weld tests, various titanium parts that make up the pressure hull are welded. The titanium is forged, which takes place under a vacuum to ensure highest quality and purity. All materials are subject to rigorous quality tests before being processed. We also determine how best to connect metal components to the acrylic windows.Īfter approval of world-leading classification society DNV GL, the titanium alloy needs to be specially produced. With the help of advanced FEA (Finite Element Analysis) software, we calculate how thick the titanium needs to be to withstand pressure at depth – including an immense safety factor. So how do we make these titanium sections for the deep-diving models? Every component starts at the drawing board, where we conduct feasibility studies. Other advantages include that it requires no maintenance, has an extended lifecycle, and has incomparable anti-corrosive properties. Titanium has several distinct advantages – it is stronger than regular steel thereby enabling us to keep the weight of deep-diving models as low as possible. In our deepest-diving submersibles, we use titanium alloys to achieve optimum size, weight and performance characteristics. Across our range of submarines, we have subs where the entire pressure hull is made of acrylic whereas other models have a high-grade steel section combined with a large acrylic window. It allows passengers to explore the subsea realm in safety and comfort without the risks associated with SCUBA diving. The Pressure Vessel for Human Occupancy (PVHO) is at the heart of each U-Boat Worx submersible.
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