Patent Number: 
Section: abstract

The invention relates to a method and device for monitoring the confinement of an enclosure including walls delimiting an interior volume and an external environment, according to which a differential pressure (ΔP) is maintained between the interior volume and the external environment. According to the invention, the enclosure includes a port in one of the walls thereof establishing a fluid communication between the interior volume and the external environment, the port is traversed by a gas stream having a speed (V) at least equal to a reference speed Vréf, under the effect of the differential pressure (ΔP). Method according to which the following steps are performed, measuring the speed (V) of the gas stream at predetermined time intervals or continuously, and comparing the speed (V) measurement with reference speed Vréférence, and when the speed (V) measurement is less than reference speed Vréférence, transmitting at least one alarm signal.