A method for recognizing the presence of leakages from sealed containers includes defining a detection zone in which a sealed container will be placed, putting the detection zone in communication with at least one gas sensor through at least one duct, introducing a flushing gas into the detection zone through the duct, placing a container in the detection zone; and sucking a gas flow from the detection zone through the duct and transferring it to a first sensor. The gas flow that reaches the first sensor is either transferred to a second sensor or to the first sensor for a second time. The signals generated by the two sensors, or the two signals generated by the same sensor, are processed for determining the presence of a gas leakage in the container.

An underwater drain leakage detection apparatus for a swimming pool is provided including an elongated pole and a housing connected to one end of the pole. A flexible leak detection tube is connected to the housing at a first end thereof and is in liquid communication with the inside of the housing. The housing is positioned over a suspected leak area below the surface of the water in the pool by suitable manipulation of the elongated pole by the pool leak specialist. A suitable dye substance then is inserted into the distal top or free end of the leak detection tube while the latter is positioned just below the surface of the swimming pool water by the leak specialist. The dye is observed from above the surface of the swimming pool water to determine whether there is a leak. If there is a leak in the area of the pool covered by the housing, the dye easily will be observed to move downward along the tube.

A method for checking the sealing of a sealed tank for storing a liquefied gas at low temperature, the tank having an inner hull and a secondary sealing membrane, a secondary space that is arranged between the inner hull and the secondary sealing membrane, a primary sealing membrane and a primary space that is arranged between the primary sealing membrane and the secondary sealing membrane is disclosed. The method has the following main steps: generating a pressure lower than the pressure of the primary space in the secondary space using a suction device, measuring the temperature of an outer surface of the inner hull, and detecting the location of a sealing defect of the secondary sealing membrane in the form of a cold spot on the outer surface of the inner hull.

A method for monitoring the leaktightness of sealed products is provided, including: a charging stage during which at least one sealed product containing a tracer gas is placed in a chamber under atmospheric pressure; a pre-evacuation stage during which the chamber containing the at least one sealed product is brought into communication with a buffer volume under a subatmospheric pressure for a pre-evacuation time of less than 0.5 second; and bringing the chamber into communication with an analysis line arranged to bypass the buffer volume in order to measure a concentration of the tracer gas in the chamber so as to detect a leak from the at least one sealed product. An installation for the detection of leaks for implementing the method is also provided.

A system and method of checking sealing of a brake caliper housing. The method may include determining a level of moisture in a cavity of a brake caliper housing with a sensor. In another configuration, the method may determine whether a detected pressure inside the cavity remains stable for a predetermined period of time.

Implementations disclose methods and devices for closure control of containers. A method includes performing, by an inspection apparatus, optical 3D measuring of a closed container, the closed container comprising a closure coupled to the container; generating, by the inspection apparatus, 3D data based on the optical 3D measuring; and processing, by an evaluation device, the 3D data to determine at least one of tightness or correct seating of the closure relative to the container.

A device (1; 2; 3; 4; 5) is provided for carrying out an integrity test on a sample of disposable components. The device has a medium chamber (10) with an inner chamber (11) that is bounded to the outside, for the purpose of receiving a culture medium. The device also has a sample holder (20) in which the sample (100) can be arranged in such a way that the sample (100) at least partially bounds the medium chamber (10) to the outside. The medium chamber (10) has a vent line (19) that is arranged on a side of the medium chamber (10) facing away from the sample holder (20).

Provided is a Fluorescent Air Leakage Detection (FALD) system and method for locating a defect in an enclosure that uses a nontoxic fluorescent solution as a marker. The solution is aerosolized with an atomizing device and guided to defects by a gas pressure modifying device.

Defects are visually located by surveying the enclosure with an ultraviolet or visible light source and identifying a location where accumulated solution fluoresces.

An apparatus is provided to verify the integrity of the confinement boundary of a spent nuclear fuel dry storage canister in operation. An external-convection blocking device is used to temporarily isolate the dry storage system or the dry storage canister from the ambient environment to form an isolated space. A gas sampling-and-analyzing device is connected to the isolated space to measure the leak rate or concentration of helium or radioactive gases which release from the dry storage canister. After the leak rate or concentration of helium or radioactive gases is measured, the integrity of the confinement boundary of the dry storage canister can be verified to further enhance the safety of the spent nuclear fuel dry storage.

A method and a system for detecting the presence of propellant gas in a gaseous sample exploit laser light especially in the 3.30-3.5 m range. The propellant can be propane, n-butane, i-butane, dimethyl ether, methyl ethyl ether, HFA 134a, HFA 227, or any other propellant exhibiting absorption in the requisite wavelength range. The presence of the application of this method in leak testing of propellant-containing containers such as aerosols or fuel canisters, permits high-speed, high accuracy leak detection capable of replacing existing testing methods.