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American Nitrox Divers International (or ANDI) was founded by Ed Betts and Dick Rutkowski in 1988. [1]ANDI has since expanded to include offices in The United Kingdom, Israel, Australia, Sweden, Italy, Germany, The Netherlands, Greece, Japan, Taiwan, Republic of Korea, Republic of Maldives, Republic of Philippines, Latin America, Middle East, with its home office in the United States of America.
Advanced nitrox certification (Advanced nitrox diver) requires competence to carry two nitrox mixtures in separate scuba sets, and to use the richer mix for accelerated decompression at the end of the dive, switching gases underwater at the correct planned depth and selecting the new gas on the dive computer if one is carried. For the purposes ...
During this period of time IANTD saw rapid growth as the diving community began to accept the use of technology such as nitrox. [2] In 1992 the National Association of Underwater Instructors (NAUI) became the first mainstream US agency to accept IANTD qualifications, and the Sub-Aqua Association (SAA) became the first UK agency to recognise ...
Gas blending for scuba diving (or gas mixing) is the filling of diving cylinders with non-air breathing gases such as nitrox, trimix and heliox. Use of these gases is generally intended to improve overall safety of the planned dive, by reducing the risk of decompression sickness and/or nitrogen narcosis , and may improve ease of breathing .
[4] [5] [6] The agency aimed to provide training materials and education for specialized diving situations. Some courses offered by TDI include open circuit courses such as diving with Nitrox [7] as well as Rebreather [8] courses. They also provide training for overhead environments like caves and wrecks, mixed gas training and were one of the ...
Nitrox is a popular diving gas mix, that reduces the maximum allowable depth as compared to air. Nitrox also allows greater bottom time and shorter surface intervals by reducing the buildup of nitrogen in the diver's tissues. This is accomplished by increasing the percentage of oxygen in the breathing gas. The depth limit of a nitrox mixture is ...
A personal dive computer is a small computer designed to be worn by a diver during a dive, with a pressure sensor and an electronic timer mounted in a waterproof and pressure resistant housing which has been programmed to model the inert gas loading of the diver's tissues in real time during a dive. [9]
It was responsible for publishing Consensus Standards for Commercial Diving Operations, which, among other things, defined qualifications for its diving certifications as well as safety procedures in underwater activities. [3] Its latest version, the 6.3 Revision of the Sixth Edition, was published in 2018.