airlock caisson

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• Caisson (engineering) — In geotechnical engineering, a caisson is a retaining, watertight structure used, for example, to work on the foundations of a bridge pier, for the construction of a concrete dam, or for the repair of ships. These are constructed such that the… …   Wikipedia

• airlock — /ˈɛəlɒk / (say airlok) noun 1. Civil Engineering, etc. an airtight transition compartment at the entrance of a pressure chamber, as in a spacecraft or a submerged caisson. 2. Engineering an obstruction to or stoppage of a flow of liquid in a pipe …  

• Decompression sickness — Caisson disease [decompression sickness] Classification and external resources Two United States Navy sailors prepare for training inside a decompression chamber …   Wikipedia

• air lock — noun a chamber that provides access to space where air is under pressure • Syn: ↑airlock • Hypernyms: ↑chamber * * * noun 1. : an air space with two airtight doors or openings for permitting entrance to or exit from a sealed off space under… …   Useful english dictionary

• Diving bell — A diving bell is a rigid chamber used to transport divers to depth in the ocean. The most common types are the wet bell and the closed bell. The wet bell is a cable suspended chamber, open at the bottom like a moon pool structure, that is lowered …   Wikipedia