An off-board vehicle fuel handling and containment system leak tester that uses CO2 gas in order to find the location of the leak site. An external source of CO2 gas is used to pressurize the fuel containment system to a pressure greater than the surrounding pressure. An electronic detector capable of detecting CO2 gas is used to scan at least some of the containment system's external surfaces for the presence of the escaping CO2 gas. When the electronic detector senses the CO2 gas an alert system is activated. Once the leak site area is known a leak finding composition of matter is applied to the leak site area in order to identify the exact point of leakage.

The invention concerns a detection method for checking sealed product packages for leaks, characterized in that it comprises the following steps: at least one previously sealed product (2) is placed in an air, nitrogen, or oxygen atmosphere, in a chamber (3) (step 101), the pressure in the chamber (3) is lowered to a secondary vacuum pressure below 10.sup.−1 mbar and, while continuing the secondary vacuum pumping of the chamber (3), the gases contained in the chamber are ionized to monitor the change in the chamber (3) of the concentration of at least one gaseous species of the gas volume contained within the sealed product (2) chosen from among nitrogen, oxygen, or argon, by analysis by optical emission or mass spectrometry (step 102).

A fire sprinkler system according to one aspect of the present disclosure includes a pipe having a first pipe portion and a second pipe portion. The first pipe portion includes a wall having a first wall thickness, and the second pipe portion includes a wall having a second wall thickness that is greater than the first wall thickness. The fire sprinkler system further includes structure coupled to the pipe and defining a sealed chamber between the structure and at least the first pipe portion, and a sensor for sensing a pressure in the sealed chamber. Example corrosion monitoring devices and methods for monitoring corrosion in pipe systems, including fire sprinkler systems, are also disclosed.

In accordance with the resent invention, there is provided a fugitive emission detection system for use in conjunction with a valve having a packing deign which includes a primary packing and a secondary packing. The valve further includes a leak port which is disposed within the valve bonnet between the primary and secondary packings. The detection system is operative to maintain the leak port in a normally open state. As a result, any fluid leakage past the primary packing is normally sent to the detection system, as opposed to being applied to and thus pressurizing the secondary packing. In the event of that a prescribed level of fluid leakage beyond the primary packing is detected, the leak port will be closed. The closure of the leak port facilitates the pressurization of the secondary packing.

Methods and systems are provided for an adaptor for a capless filler pipe of a fuel tank for leak detection testing of a vehicle. In one example, the system may include a threaded hollow shaft having a top end able to receive a nozzle of a leak detection machine, the hollow shaft inserted through a mouth of a filler pipe of a fuel tank, a gasket arranged on the hollow shaft, and an end cylinder having an elastic piece on the hollow shaft configured to create an airtight seal with the fuel mouth. In this way, the adaptor may restrict gas flow through a defined flow path through the adaptor, and not through any other flow paths during leak detection testing.

A method for testing the hydrogen permeability of a test object 1 includes the steps of provision of a sensor device 110 on a first side 3 of the test object 1, application of a test gas 5 including hydrogen 2 to a second side 4 of the test object 1, and detection of permeating hydrogen 2 passing through the test object 1 from the second side 4 to the first side 3 with the sensor device 110, wherein the sensor device 110 includes at least one hydrogen absorbing sensor layer 111 and the detection of the permeating hydrogen 2 including a detection of a change of state of the at least one sensor layer 111. A measuring apparatus 100 for testing the hydrogen permeability of a test object 1 is also described.

A method for inspecting a seal of a flexible container for a fluid, particularly a fluid medication, includes covering the container at least in part—preferably completely—by a gas-permeable layer. The container, together with the gas-permeable layer, is arranged in a flexible, substantially gas-tight bag, and the substantially gas-tight bag is evacuated by pumping out via a bag opening. The container is filled with a noble gas, and the presence of noble gas, which escapes out of the bag opening from the container via a leak through the gas-permeable layer, is detected.

An apparatus for detecting leaks from a gas pipeline or storage system includes a light source configured to emit a beam with at least one spectral component capable of interacting with pipeline gas, a reflector configured to reflect a portion of the beam, an optical detector configured to detect the reflected beam, a signal processing module coupled to the output of the optical detector configured to analyze the detected beam and output a measured concentration value that characterizes the amount of target gas in the beam path, and a statistical processing module coupled to the signal processing module configured to store and analyze the measured concentration value. The statistical processing module is further configured to compute a value based on statistical information associated with the stored plurality of concentration values and compare the computed value to a first predetermined threshold, and transmit a first alarm signal if the computed value is greater than the first predetermined threshold.

An apparatus for detecting leaks from a gas pipeline or storage system includes a light source configured to emit a beam with at least one spectral component capable of interacting with pipeline gas, a reflector configured to reflect a portion of the beam, an optical detector configured to detect the reflected beam, a signal processing module coupled to the output of the optical detector configured to analyze the detected beam and output a measured concentration value that characterizes the amount of target gas in the beam path, and a statistical processing module coupled to the signal processing module configured to store and analyze the measured concentration value. The statistical processing module is further configured to compute a value based on statistical information associated with the stored plurality of concentration values and compare the computed value to a first predetermined threshold, and transmit a first alarm signal if the computed value is greater than the first predetermined threshold.

A leak detecting device for a fluid filled vessel including a housing, a solid shaft, an anchoring attachment, and a resilient member. The housing has a continuous perimeter edge sized to extend around an underwater surface, forms a hollow interior, and includes a first aperture formed through a wall of the housing and a second aperture formed through the wall of the housing. The solid shaft extends through the first aperture of the housing and has a first end on an interior side of the housing and a second end on an exterior side of the housing. The anchoring attachment is secured to the first end of the solid shaft. The resilient member is secured to the perimeter edge of the housing.