Characteristics of high-oxygen diving matters needing attention in high-oxygen diving

There are many forms of diving. Today, Bian Xiao will introduce you to this kind of high-oxygen diving. If many friends want to experience this kind of diving, they need to know the relevant knowledge in advance. The specific information is as follows. Let's have a look!

Characteristics of high-oxygen diving: 1, and the diving time is longer.

As mentioned above, high-oxygen diving can get a long diving time. This effect is especially suitable for underwater photography. When taking pictures, people often wait in a fixed place for a long time in order to wait for a rare photo. If they stay 20-30 meters away, they always feel that it won't be long before they breathe the air and hear the beep of the computer desk reminding them. After using high-oxygen diving, they can get more leisure diving time for taking pictures.

2. High security

Compared with air diving, at the same depth, nitrogen and oxygen mixed divers absorb less nitrogen and have lower probability of getting decompression sickness naturally. Of course, the premise here is to go through a complete high-oxygen course training first, and in terms of diving in a mode that meets the safety regulations, any diving mode beyond a reasonable range cannot guarantee its safety.

Precautions for hyperoxic diving 1. A complete training course is required.

Divers can only rent high-oxygen tanks at various diving points if they hold high-oxygen diving licenses issued by various systems. Moreover, through the content of the class, we will be able to understand the usage and precautions of hyperoxia diving more completely, which will be helpful for future safety.

2, high oxygen diving can not engage in deep diving.

Don't mistakenly think that you can dive deep for a long time with high oxygen diving! In fact, a higher proportion of oxygen concentration limits the diving depth. 36% of the high-oxygen diving safety limit depth is 24m, and 32% of the high-oxygen diving safety limit depth is 30m (this is based on the safe oxygen partial pressure 1.5 ATM, and if the more conservative oxygen partial pressure 1.4 ATM is used, the safety depth will be lower. The research shows that the oxygen partial pressure should not be greater than 65,438+0.6 ATM. This is the most important thing to pay attention to when using high oxygen diving! Moreover, in practice, in order to avoid the problem of oxygen poisoning, do not use hyperoxia diving every time you go out diving. Usually we only use the first or at most the second high-oxygen diving every day, and then the diving should be arranged at a shallow depth with air. Use appropriate equipment for high-oxygen diving. The structure of diving equipment used for high-oxygen diving is the same as that of general air diving, but high-pressure air may accelerate the oxidation of general metal and carbohydrate impurities, so there are strict requirements on equipment materials and cleanliness.

In terms of materials, you need to confirm whether your regulator is suitable for at least 40% high oxygen. At present, the regulators of larger brands on the market should have reached such an aerobic level. If 40%~80% hyperoxia must be used, it may be necessary to consider using zirconia regulator.

The consideration of carbohydrate impurities is because when we generally use compressed air, impurities and oil stains in the air will adhere to the regulator, and when impurities accumulate too much, spontaneous combustion may occur. Therefore, if the regulator used for air diving for a long time wants to do high oxygen diving again, it must be thoroughly cleaned and replaced with the O-ring.

Special attention should be paid to the use of gas cylinders. The cylinders for high-oxygen diving should be marked with green and yellow, and the words Nitrox should be written. Before each use, the oxygen concentration must be checked with an oxygen analyzer and adjusted on the computer desk. The gas cylinders used for high oxygen diving can be directly converted into air diving, but the external labels must be corrected to avoid misuse. If the air cylinder used for air diving is to be converted into high oxygen diving, it must be carefully cleaned to remove impurities in the bottle before it can be used, otherwise there will be natural danger.

In addition, it is highly recommended to use the diving computer instrument, which not only facilitates the monitoring of the residual nitrogen in the body, but also avoids the tedious action of looking up the table for conversion. At the same time, the percentage of oxygen concentration in the body is also monitored to avoid the risk of oxygen poisoning. Start your hyperoxic diving experience. Using high-oxygen diving in the right place can make diving more flexible and interesting. Interested divers may wish to contact your familiar diving center. Only one or two classroom courses and two marine internships are needed for the course of professional knowledge of hyperoxia diving. After completing the course, you can start your happy high-oxygen diving activities!

You got it? No matter what kind of diving, everyone should pay attention to safety and be familiar with diving methods!