Dry Underwater Welding Benefits and Advantages explained
Dry underwater welding is a technology that can help improve maintenance of conventional off shore oil and gas facilities, as well as any other marine facility. Ordinary underwater welding technologies have traditionally provided only temporary solutions.
This means that welds made using ordinary technology have to be reworked later, which can require dry docking of ships or other complicated techniques. This can disrupt operations significantly, as well as being costly. Fortunately, there are new underwater welding systems, like Neptune’s low cost NEPSYS method, that can create a permanent, high quality weld.
This welding method uses a compact housing to enclose and fully isolate the area affected by heat from its surrounding environment. You should note that this housing needs only to be large enough for the electrodes to achieve complete runout.
When welding a complex structure, it’s sometimes appropriate to customize the enclosure to surround the entire weld area. That’s all that needs to be covered, however. There’s no need to enclose the diver or equipment, making this type of welding much cheaper than that which uses complete hyperbaric chambers.
The habitat allows ideal welding conditions to be maintained. A heated inert gas, constantly delivered to the habitat at the appropriate pressure, creates a controllable environment around the immediate area of the weld. That means that many of the problems traditionally associated with underwater welding are eliminated.
This gas is delivered at a higher pressure than the pressure of the water, even at significant depths. This enables the welder to ensure that the area being repaired stays dry. It also allows for heat treatment before and after welding.
Conditions around the zone are better than in conventional welding, because the habitat keeps hydrogen from collecting around the vicinity of the weld, and it prevents sea water from reaching the weld and being able to quench it. This makes even heat distribution significantly easier.
Providing an ideal environment for dry underwater welding creates the possibility of a much higher quality weld, more consistently than can be achieved in wet underwater welding. This process creates a permanent weld that’s strong and stable, using only portable equipment. That means that repairs can be made without a serious impact on operations.
Risks of ordinary underwater welding include electric shock, decompression sickness, and buildup of pockets of hydrogen and oxygen. Dry welding prevents the creation of these potentially explosive pockets of gas. However, it’s still important to take precautions against decompression sickness and to maintain proper insulation on welding equipment.
Dry underwater welding is significantly less expensive than traditional welding methods, and very portable, making it suitable for emergency repair situations where you need a fast response time. that means there are plenty of benefits to this new dry underwater welding technology, and it has significant applications in commercial environments.
For those who need a fast, comparably less expensive solution for repairs in underwater situations, a dry underwater welding system is a good choice. It compares well to existing underwater welding technology, but is much easier, faster, and more portable. Consider this type of welding if you need a repair solution.
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