دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: an air- or inert gas-filled device that minimises pressure surges in the output line of a mud pump. Sometimes called a surge dampener.

n: a condition resulting from the formation of gas bubbles in a divers blood or tissues during ascent. Failure to rid tissues of the inert gas may cause a wide variety of symptoms, including pain, nausea, paralysis, unconsciousness, temporary blindness, and even death. Also called the bends.

n: 1. the part of a breathing medium, such as helium, that serves as a transport for oxygen and is DOl used by the body as a life-support agent. Its purpose is to dilute the flow of oxygen to the lungs, thereby preventing oxygen toxicity. 2. in chemistry, gases that have a fined outer electron shell and thus do DOl easily react with other substances. Examples are helium, argon, neon, and xenon.

n: 1. the process of pressurising the vapour space of a vessel with an inert gas blanket (usually exhaust gas) to prevent the formation of an explosive mixture.2. a procedure used to produce the oxygen content of a vessels cargo sp~s to 8% or less by volume by introducing an inert gas such as nitrogen or carbon dioxide or a mixture of gases such as flue gas.

n: in diving, oxygen and one or more inert gases.

n: diving in which a diver uses a breathing medium of oxygen and one or more inert gases synthetically mixed.

v: to combine with nitrogen. nitrogen n: an inert gas (NOz) used for jetting wells.

n: diving in which a divers tissues are saturated with an inert gas to a point where no more of the gas can be absorbed by the body. Once a diver is saturated, decompression time remains the same whether he or she stays at the saturated depth for 24 hours or for several days. saturation point n: the point at which, at a certain temperature and pressure, no more solid material will dissolve in a liquid.

n: an inert gas that is used as a shielding medium in pipe welding. Its primary purpose is to prevent oxidation of the weld at the point of contact with the pipe metal by excluding oxygen in the air from the area around the molten metal.

n: a process used by divers to eliminate inert gases from the tissues, whereby they breathe high partial pressures of oxygen while resting after a dive to reduce the risk of getting decompression sickness.