Tuesday, March 10, 2009

Wet Underwater Welding: The Alternatives

By Romany S Copenhager

If you need to make permanent repairs underwater in any industry, underwater welding is probably a concern. It doesn't matter whether you're in oil and gas, shipping, defense, or marine infrastructure. You need to make sure all your underwater components are stable and functional.

Underwater welding is an important part of maintaining any metal structure existing in full or in part below the water. However, most conventional underwater welding systems have a number of problems. They're expensive, can provide only temporary repairs, dangerous, and/or hard to move around.

Dry underwater welding systems like the Neptune System have a significant number of advantages over wet welding methods. They permit workers to make high quality dry welds without the amount of time or money needed for making a large hyperbaric chamber.

Gas and oil operators will be happy about the cost and time savings offered by this kind of underwater welding. As infrastructures and platforms get older, there's going to be an increase in demand for good repair, inspection and maintenance services. That means it's important to find a comparatively inexpensive underwater welding solution that's fast and easy to use.

Oil rigs, subsea pipelines, platforms and all other metal underwater structures can really benefit from an underwater welding solution that's high quality. It's possible to create customized habitats that can be configured to work in almost ever situation where a weld might be required.

If you own or operate a ship, you'll also enjoy the savings that can be had using portable dry underwater welding methods. It keeps you from having to prematurely put your vessel into dry dock - the welds produced cost around the same as a wet weld, but they're a lot stronger. Previously, a temporary underwater repair was the only thing available, with the other option being an early dry dock for the vessel.

The problem with temporary wet weld repairs is that they're quick fixes. They can be done quickly and cheaply, but continual reworking of the weld is needed, meaning a wet weld actually costs a lot in the long run. You'll also have to have the wet weld inspected frequently.

Temporary wet welds must all be removed eventually, and the vessel must be dry docked to have a quality repair performed. Wet welds just can't rival the original integrity and strength of the hull. Since dry docking is extremely expensive and time consuming, it could cause serious problems with your operation.

Using a technology like Neptune's NEPSYS dry welding system lets you maintain your ship in the water and still get a permanent repair. It's possible to fix tears, holes, pitting, cracks and corrosion, and you can even insert plates completely into the hull with full penetration.

Since this technology can be rapidly deployed and is extremely portable, it's also useful for military operations that require permanent underwater repairs and in marine infrastructures. In any subsea industry where repairs are necessary, dry underwater welding is an important technology.

If wet underwater welding has previously been your only option for below water repairs, consider a portable, affordable dry welding option. Just about any underwater repair application can benefit from this technology, from pipelines to ship hulls. - 15437

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