Imagine working underwater for weeks without going back to land. You sit below the ocean, far away from home. It becomes even more extreme knowing that the water pressure there is very high. It can crush everyday equipment easily. This condition is what saturation diving looks like. It’s one of the most extreme jobs in the world.
Offshore oil platforms and underwater pipelines are usually the industries that require this work. Many people have heard about this job before. The next moment, they wonder how humans can live in such conditions. This article answers this question by providing a complete explanation of this extreme profession. Let’s discuss further in the first section below.
What is saturation diving?
Saturation diving is a special type of deep-sea work in which divers live and work in a pressurised environment for long periods. The duration of their stay depends on their job requirement. Some may only require them to stay for a few days. However, others may force them to live below the surface for weeks.
Many people think it is similar to scuba diving. The fact is, this activity is very different. In scuba diving, a person swims for a short time before returning to the surface. Many commercial divers who work near ports even do the same thing. However, saturation divers live in a pressurised chamber that maintains the same pressure as the deep water. They do not return to the surface until the job is finished.
One fact to remember is that the science behind saturation diving is simple. The high underwater pressure causes the body to absorb gases. If you return to the surface too fast, these gases can create bubbles in your body. These bubbles can cause serious harm to health. Hence, staying under steady pressure reduces repeated stress on the body. This method makes deep-water work safer.
The way saturation diving works
The dangers of this job mean the whole process is carefully controlled. The purpose is to protect divers from sudden pressure changes that can cause serious injury. That is why every move is planned. It becomes more complete when a support team monitors the divers at all times from the surface.
A key fact about saturation diving is that the entire operation has several stages. These stages happen in a specific order. It becomes more interesting considering that each stage builds on the one before it. This situation creates a chain of events to make one of the most dangerous jobs as safe as possible.
Compression phase
At the beginning, the divers will enter a sealed living chamber aboard a support ship. Then, the chamber pressure slowly increases to match the underwater depth. If you think this process is quick, you’re wrong. The compression phase can take many hours. That’s because raising the pressure too fast can shock the body. This process is crucial to allow the bodies to safely adjust to the new environment.
Living under pressure
After the compression is complete, the saturation diving enters a new step. Workers begin to live full-time inside the pressurised chamber. Thus, this place becomes their temporary home. There are a few features inside to make the chamber suitable for living. It includes sleeping bunks, a small eating area, and limited space to move around. By knowing this, you may imagine that the space is generally small. However, it’s still enough to support basic daily needs.
The diving bell transfer
Now, you may question, “How do they travel to the seabed from the chamber?” The answer lies in a piece of equipment called a diving bell. The bell has a direct connection to the chamber, allowing people inside to move between the two without losing pressure. After entering the bell, a crane lowers it slowly into the ocean. When it reaches the right depth, the divers open a hatch to enter the water.
Working at depth
After entering the water, workers begin to complete their tasks on the seafloor. There are a few common jobs, such as pipeline repair, heavy equipment installation, and structural inspection. You should remember that it is dark below. Moreover, the strong currents can make the movement difficult. Hence, saturation diving requires great focus to be completed properly. Each move within this activity is guided by strict rules to reduce risk.
Final decompression
After completing all the tasks for weeks, the final stage will begin. Decompression involves slowly lowering the pressure inside the chamber until it matches the surface condition. This process is done slowly to allow the gases inside the human body to leave safely. During the procedure, medical staff closely monitor the divers for any signs of health problems. Hence, they remain safe when exiting from the chamber.
Essential equipment
After reading this far, it is easy to notice that saturation diving heavily relies on proper equipment to keep the process safe. Without them, humans will not be able to survive for long at great depths. That is why each of them should have a clear purpose, forming a large support network.
In the previous section, the article mentioned two pieces of equipment. They are a living chamber and a diving bell. This section will not only explain them in more detail but also a few other gears you need to know about. Let’s begin by explaining them further in the paragraph below.
The saturation living chamber
The key piece of equipment for saturation diving is the living chamber. This chamber is made from thick steel that can resist high water pressure for long periods. It becomes stronger knowing that every part is designed to remain sealed under extreme conditions. For example, the doors use special locking systems to keep the airspace tight. This feature is crucial for maintaining stable pressure inside.
The diving bell
The diving bell is a metal capsule that carries divers safely to the underwater work site. Similar to the chamber, thick steel is also becoming its main material. The bell must have strong joints to prevent leakage below the surface. Inside, it contains a few essential systems for a safe dive. You can find control panels that monitor gas levels and a communication system to contact the support team above.
The heliox breathing system
Many people do not know that breathing normal air at great depths can cause serious problems. That is because the body reacts differently under high pressure. Nitrogen is a large part of normal air. Inhaling this underwater can make thinking unclear. Hence, saturation diving involves a mix of helium and oxygen to keep breathing safe. The reason behind using helium is that it behaves more safely under pressure.
The umbilical supply system
Umbilical is a strong bundle of hoses and cables that connects the divers below the surface. This tool is made carefully to carry everything they need to survive and work. For example, it delivers breathing gas and sends warm water to maintain the body temperature in the cold sea. Umbilical also provides power for all of their working tools. Without it, the job will be impossible to complete.
Major risks of saturation diving
One thing to note is that even with high-tech tools and strict safety rules, this is still a high-risk occupation. Working deep below the sea brings constant pressure. It consists of steady physical stress on the body and also mental strain on the mind. This situation is the reason small problems can become serious without quick, proper resolution.
Until now, you only discovered that this is a dangerous job. However, this section explains the exact risks of saturation diving. Before going to the explanation, it should be noted that most dives are completed without any incident. Still, it is crucial to understand the major risks it entails. Knowing them will make you appreciate the person behind this work even more.
Decompression sickness
Decompression sickness occurs when pressure is reduced too quickly after saturation diving, leading to bubbles forming in the body. These bubbles can block blood flow, causing nerve stress. This situation can lead to several symptoms, such as sharp joint pain, muscle aches, and a heavy feeling in the chest. In more serious cases, it can even cause paralysis. Divers who face this issue need immediate treatment to avoid lasting health problems.
Equipment failure
Since divers rely heavily on equipment, equipment failure can quickly lead to a life-threatening situation. Unlike on land, you cannot simply walk away if something stops working. A problem with the breathing gas supply can cause a rapid drop in air pressure within minutes. Moreover, a failure in the power system renders the tools inoperable. That is why the whole operation often follows a strict inspection routine.
Fire hazards
You may think that fire is very unlikely to happen in a saturation diving job. The fact is that it is a real danger, especially inside the chambers. In a confined space with various gas mixtures, certain materials are more prone to ignition. That means even a small spark from an electrical device can ignite the materials if you do not follow the safety steps.
Psychological and physical stress
Living remotely below the sea for weeks can place a heavy pressure on a person’s mental well-being. In the saturation diving mission, workers are separated from their families. It becomes more stressful considering you no longer can experience the feeling of fresh outdoor air. Not only mental, but the physical demands also add another layer of stress. The work requires handling heavy tools, leading to the building up of fatigue. That is why the mix of psychological and physical stress makes the job more challenging.
Tips to become a saturation diver
If you want to have a career in saturation diving, it takes dedication. That is why it takes many years to be eligible to pursue this job. Most people begin by completing a basic commercial diving licence before moving into deeper offshore work. That means building the required skills is a step-by-step process. Here are some tips to consider for those who are looking to pursue this career:
- Train at a recognised commercial diving school to learn the basic skills.
- Gain real offshore experience before aiming for deep saturation diving projects.
- Improve physical fitness to handle long shifts.
- Practise teamwork in every job.
- Strengthen mental resilience to manage living in isolation.
Obtain your first diving licence at Diving First Komodo
After reading this article, you can see that saturation diving is an extreme job with many aspects to discuss. Although it is dangerous, it doesn’t mean that the work cannot be done safely. This profession follows a strict procedure to maximise the diver’s safety. Within the process, all of the work is made possible with a set of crucial equipment.
If you want to begin your diving journey as a beginner, consider obtaining an open water licence at Diving First Komodo. Participants who finish this programme will get a PADI diving licence, a globally recognised certificate. The experienced instructor will ensure you can complete the course smoothly. It becomes better, as you can explore the underwater beauty of Komodo Island in Indonesia while completing the course. Simply visit the site to book the class that suits you best and make your dream come true now!