Skip to main content

Underwater welder



               

                             ELECTRICITY AND WATER ARE A DEADLY COMBINATION


Underwater welder

Underwater welders are specialised engineers who perform repairs on submerged structures like bridge supports and offshore oil rigs. Their work involves a unique and deadly cocktail of hazards, including electric shocks, drowning, hypothermia, explosions, marine life attacks and the bends.
 

During wet welding, technologies like protective rubberised dry suits and insulated electrodes reduce the risk of electrocution. A second option – dry welding – involves building a sealed enclosure around the work site, pumping it full of pressurised air, and working within it as if on dry land. However, this is not without its own risks; if concentrated pockets of oxygen and hydrogen develop around the electrical arc created during welding, the results can be explosive.
 

Despite the work itself being fraught with danger, underwater welders are statistically most likely to die from common diving-related incidents like drowning, nitrogen narcosis or decompression sickness. These threats are managed to some extent using remote surveillance cameras that monitor workers from the surface, and by watching out for malfunctioning gear and signs of distress.

An underwater welder’s equipment must all be properly insulated.

Comments

  1. Micheal Alexander28 January 2022 at 10:54

    Thanks for this. I really like what you've posted here and wish you the best of luck with this blog and thanks for sharing. Underwater Hydraulic Engineering California

    ReplyDelete
  2. Micheal Alexander24 February 2022 at 01:32

    I got here much interesting stuff. The post is great! Thanks for sharing it! Underwater Drilling Company California

    ReplyDelete

Post a Comment

If you have any doubts, please let me know

Popular posts from this blog

CRYSTALLIZER DESIGN CALCULATION

Given Data Solute                                                                    : A Solvent                                                                  : B Concentration of Solute                                  : 0.25 Kg of Solute/Kg of Solvent Temperature                                                      : 50 to 20 O C Maximum allowable growth rate (G)           : 3.0 µ m/min Product Crystal Size (L p )                                 : 2000 µ m Available Seed Size (L s )                                   : 100 µ m Production Rate Crystal (P)                           : 500 Kg Feed Concentration (C o )                               :0.25 Kg A/Kg B Feed Temperature (T o )                                  : 50 O C Density of Feed Solution ( ρ o )                       : 1.05 Kg/L Density of Mother Liquor ( ρ f )                      : 1.05 Kg/L Density of Solute Crystal ( ρ s )                       : 1.8 Kg/L Desired final Temperature (
Post a Comment
Read more

Sugar Mill Roller Grooves

SUGAR MILL ROLLER GROOVING     The three rolls of a conventional mill are arranged in a triangle so that the fiber is squeezed twice between the top roll and the feed roll and the top roll and the discharge roll. The rolls have cast iron, grooved shells mounted on steel shafts. Fiber passing between the top and feed roll is conducted over a turner plate to the discharge roll. The rolls are pinion driven from the top roll which is driven at a speed of 3 to 6 rpm by a gear reduction system. The feed and discharge rolls are fixed, while the top roll is free to move up and down by means of a hydraulic pressure system. Cane is moved between mills by means of intermediate conveyors. They are generally rake or drag-slat type, which carry the fiber to a fixed chute leading to the next mill. 1)       Circumferential Grooves a)       Cutting grooves around the roll gives a corrugated surface of increased area which has better gripping action because of the compression of
3 comments
Read more

Calcium Carbonate

Calcite                    : CaCO3 Refractive Index         : 1.66-1.74 Specific Gravity         : 2.71 Mohs Hardness          : 3 Aragonite              : CaCO3 Refractive Index        : 1.68-1.69 Specific Gravity        : 2.95 Mohs Hardness         : 3.5-4 The mineral calcite is the major or sole constituent of most commercial calcium carbonate products. These include natural limestone, marble, and chalk, plus most precipitated calcium carbonate. Aragonite is a metastable polymorph of calcite that typically has an acicular crystal shape. Natural aragonite products are less common, but precipitated varieties are available. Many calcium carbonate deposits are the remains of the shells and skeletons of ancient sea life. The color, purity, density, and crystal morphology depend upon the influence of waves and water currents before burial, and upon temperature, pressure, and tectonic activity after burial. The most common mineral impurities are quartz and clay.  The m
2 comments
Read more