What are the breathable gases used in underwater welding?

Olen VonRueden asked a question: What are the breathable gases used in underwater welding?
Asked By: Olen VonRueden
Date created: Mon, Jun 14, 2021 7:27 PM



Those who are looking for an answer to the question «What are the breathable gases used in underwater welding?» often ask the following questions:

🌊 What are the gases used in underwater welding?

helium and argon

🌊 What type of welding is used for underwater welding?

Underwater wet welding primarily uses shielded metal arc welding (SMAW). The welder works completely surrounded by water – including their electrode.

🌊 Where is underwater welding used?

The most common task that commercial divers have to perform is underwater welding. From oil rigs in the Gulf of Mexico to ship salvage operations, underwater welders are relied on to weld in whatever conditions the ocean decides to throw at them.

1 other answer

Depends on the depth, generally we use regular compressed air down to about 170 fsw but if below 170 fsw we would use a gas mixture of heliox (helium and oxygen)

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We've handpicked 23 related questions for you, similar to «What are the breathable gases used in underwater welding?» so you can surely find the answer!

What colleges have underwater welding?

BYU Brigham Young University

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What colleges offer underwater welding?

  • Underwater Welding Schools in California. Out of the numerous trade schools and 2-year colleges offering welding programs in California, there are only two of them that offer an underwater welding program, and these are Santa Barbara City College and the Nat’l University Polytechnic Inst.

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What does underwater welding require?

If you believe becoming an underwater welder is right for you, these are the minimum requirements you will need to possess: High school Diploma or GED. Ability to swim. Mechanical aptitude.

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What is underwater welding called?

What is underwater welding called?

  • Basically the term "underwater welding" refers both to wet welding where the welding is actually done with special electrodes in the water, as well as what is known as Dry underwater welding where the welding is done in a special habitat called a hyperbaric chamber.

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What is underwater welding like?

commercial diving underwater welding helmet

Divers must perform welds in a water environment… Wet welding involves using a special kind of welder that is shaped like a rod. Underwater arc welders use between 300-400 amps of direct current via their waterproof electrode. The real challenge to divers is mastering how to use a rod to weld.

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What is different from stick welding to underwater welding?

commercial diving scuba

Divers usually use around 300–400 amps of direct current to power their electrode, and they weld using varied forms of arc welding… Wet welding with a stick electrode is done with similar equipment to that used for dry welding, but the electrode holders are designed for water cooling and are more heavily insulated.

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What gases do diver take underwater?

Depending if the person is nitrox certified or not the gas in the tank is compressed air or if nitrox certified the gas will be a mix of nitrogen and oxygen with the mix marked as a percentage of O2.

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Does underwater welding work?

How many hours does the typical underwater welder work?

  • This aggregates to a 175 hours of monthly commitment on average. So, an underwater welder who works on an inland project has to stay underwater for nearly as long as 160 hours per month and 2000 hours per year. Jobs under this category involve occasional weekends so that welders can make it to or from their work sites.

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Is underwater welding safe?

  • By the very nature of the electricity of welding power and water associated with underwater welding, there is risk of electric field leakage. This can be dangerous and life-threatening to the welder and other divers in the water. Safety measures may include that the welding equipment is suitably insulated and adaptable to a marine regulations.

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Wage of underwater welding?

from 13 to 35 dollars an hour depends on what your certifacations are. you can earn from 15000 to 100000 dollars a year depends on if its commercial welding or independent welding give me more of an answer

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Who discovered underwater welding?

obviously, someone

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Who invented underwater welding?

navy underwater welding underwater welding accidents

Underwater hyperbaric welding was invented by the Russian metallurgist Konstantin Khrenov in 1932.

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How is underwater welding different from dry welding?

  • Although we normally picture underwater welding being done while fully submerged in water, most of it is done in dry habitats. Dry welding makes use of a dry chamber or habitat (hyperbaric chamber) where water is replaced by a mixture of gas so one or multiple welders can do the job in dry conditions.

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Which is better offshore welding or underwater welding?

  • Besides that, offshore welding is a bit high paid than onshore welding. Usually, when people hear underwater welding, they think of someone welding large pipes or ships in the ocean.

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Which is better wet welding or underwater welding?

  • If you’re looking for higher pay on two different wet welding projects, you may consider one with less visibility, closed-off environment and more challenging weld. Each project environment has a slightly different look and feel to it which is one of the major draws of this profession. No day looks the same for underwater welders.

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Why do underwater welding instead of surface welding?

  • In general, the steeper the lead angle, the slower the rate of travel and the wider the weld bead and deeper the penetration. For underwater wet welding a shallower lead angle than that used for surface welding is required, of between 35–45º. This is to allow for the bubbles to escape without unduly interfering with the weld puddle.

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What are dangers of underwater welding?

  • Electric Shock – Electrocution is the biggest threat to underwater welders…
  • Explosions – Gas pockets created by the formation of hydrogen and oxygen pose a huge risk to underwater welders…
  • Drowning – A failure of any part of an underwater welders SCUBA gear could lead to drowning.

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What makes underwater welding so dangerous?

commercial diving life expectancy underwater welder

Electrocution is a huge threat to underwater welders, requiring them to use specialized waterproof equipment at all times. Furthermore, underwater welding produces oxygen and hydrogen gases, which can cause lethal explosions when combined in concentrated amounts.

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What schools offer underwater welding training?

Inquire your local school boards or research where you can find schools that have underwater welding training. You may have to look around for a specific school, trade school in particular.

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What's the difference between underwater welding and topside welding?

  • The main difference between the underwater welding and topside is the coating; marine electrodes need to be extremely resistant to water. Some divers coat their electrodes, but many of them last for more hours. They work perfectly well for depths that go up to thirty-three feet.

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Are underwater welding machine different?

underwater welding rods underwater welding machine price

This equipment can vary in range of price, quality and effectiveness… And just as in surface stick-welding, underwater welders must choose the correct stinger angle and electrode diameter to fuse the seam.

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Does army do underwater welding?

  • Although all the Army instructors were already certified in commercial diving, IDI is the ONLY institute in the United States that offers an underwater welding certification, and the ONLY civilian dive training facility in the U.S. approved by Naval Sea Systems Command (NAVSEA).

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Does underwater welding shorten lifespan?

Underwater welding by itself will do nothing to shorten the lifespan of a diver. The fumes of the welding rods do not get into the divers air supply.

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