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The MOD is significant when planning dives using gases such as heliox, nitrox and trimix because the proportion of oxygen in the mix determines a maximum depth for breathing that gas at an acceptable risk. There is a risk of acute oxygen toxicity if the MOD is exceeded. [1] The tables below show MODs for a selection of oxygen mixes.
The concept has important practical use in fire safety engineering. For instance, to safely fill a new container or a pressure vessel with flammable gases, the atmosphere of normal air (containing 20.9 volume percent of oxygen) in the vessel would first be flushed (purged) with nitrogen or another non-flammable inert gas, thereby reducing the ...
Surface oxygen breathing: The use of oxygen or nitrox as a post dive breathing mixture is recommended in cases where incomplete decompression or short periods of omitted decompression have occurred, or at any time when there is doubt that decompression was sufficient. [citation needed]
Consumers should use the devices while under a physician’s care and follow up if blood oxygen readings seem to dip precipitously, especially when paired with symptoms like shortness of breath ...
In an oxygen system the presence of oxygen is implied, and in a sufficiently high partial pressure of oxygen, most materials can be considered fuel. Potential ignition sources are present in almost all oxygen systems, but fire hazards can be mitigated by controlling the risk factors associated with the oxygen, fuel, or heat, which can limit the ...
Although not all dive tables are recommended for use in this way, the Bühlmann tables are suitable for use with these kind of calculations. At 27 metres depth the Bühlmann 1986 table (for altitudes of 0–700 m) allows 20 minutes bottom time without requiring a decompression stop , while at 20 metres the no-stop time is 35 minutes.
Oxygen bleach is also called color-safe bleach, non-chlorine bleach, or oxygenated bleach. Its active ingredient is typically hydrogen peroxide, although some formulas contain sodium percarbonate ...
MAPP/oxygen was advantageously used in underwater cutting, which requires high gas pressures (under such pressures acetylene can decompose explosively, making it dangerous to use [5]). However, underwater oxy/fuel gas cutting of any kind has been largely replaced by exothermic cutting [6] because it cuts more quickly and safely.