Depressurization


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Depressurization

A condition that occurs when the air pressure inside a structure is lower that the air pressure outdoors. Depressurization can occur when household appliances that consume or exhaust house air, such as fireplaces or furnaces, are not supplied with enough makeup air. Radon may be drawn into a house more rapidly under depressurized conditions. Backdrafting of furnaces and vented appliances can also occur with depressurization, introducing exhaust gases into the house.
References in periodicals archive ?
During summer operation, higher outdoor air temperatures will result in the increased pressurization of the lower floors and depressurization of the upper floors.
The difference was that depressurization occurred after cell stabilization so that crystallization happened under static pressure.
Depressurization or "blowdown" protects key process equipment by relieving fluids from the equipment in a controlled manner.
Variable pressure set points, hold time and depressurization rates are programmed into PLC controls.
The ECCS employed at Fukushima includes the following subsystems: high-pressure core injection, core spray, low-pressure coolant injection/containment cooling, and the automatic depressurization subsystem.
To prevent depressurization of the dwelling that might affect other fuel-burning devices
According to the ministry's latest findings, Skymark's pilots were not following the set procedure under which one of the two co-pilots must put on an oxygen mask to prepare for any emergency depressurization when the other leaves the cockpit for lavatory or other reasons during a flight at 3,000 meters or more in altitude.
Instead of just bubbling ozone through polluted water, he uses repeated cycles of pressurization of ozone and dirty water so the ozone saturates the water, followed by depressurization so the ozone expands into numerous microbubbles in the polluted water, similar to the way a carbonated beverage foams and overflows if opened quickly.
Suction must be applied during depressurization if there is an air leak of 5 1/min or greater coming from the patient, otherwise suction is not essential.
Although the test lasted only a few hours, it revealed how quickly the sediments responded to depressurization, how fast the water and gas flowed into the well, and the strength and permeability of the sediments.
Snubbers serve to isolate gauges and other instrumentation for removal from a system without depressurization.
Anytime there's a depressurization there's a possibility.