Get to know the world of technical diving (tech diving): oxygen, nitrox, helium, trimix diving. Find out what is diving physics. Know how to avoid oxygen toxicity.
Tech diving is great but has some special aspects and also diving problems. Technical diving involves more complex equipment for producing, supplying and delivering the various gases, other than air.
The technical diver is - or should be - a very experienced scuba diver, having logged at least 500 dives before entering this new field.
It could be argued that technical diving history started with the development of the first rebreathing set in 1879. Other possible starting points are the development of oxygen decompression or the use of mixed gas diving sets.
Agreat deal of debate surrouds the mechanics of oxygen toxicity and the symptoms that indicate an approaching attack. Much of the information presented here is designed to afford divers the ability to make educated decisions and responsible choices.
Perhaps the biggest confusion surrounding oxygen breathing concerns the significant variability with respect to oxygen tolerance between individuals and within one individual over time.
Nitrox diving entails the use of an oxygen-rich mixture to reduce the nitrogen content of the gas. A BSAC review summarized their nitrox findings asfollows:
Dr. Buhlmann is a well-known figure in the world of decompression modeling; many current decompression algorithms are based on his research. Buhlmann is particularly relevant to a discussion of helium diving because his efforts helped usher in the use of helium diving.