An air leak detection system for chest tube collection systems includes a light emitting element, such as an LED, and a photodetector that can detect reflected light emission generated by the light emitting element. The air leak detection system can include a securement component, such as a transparent clip or adhesive, so that the air leak detection system is compatible with any conventional chest tube collection system. In certain embodiments, the light emitting element is positioned closer to the bottom portion of the water seal tube than the photodetector. In certain embodiments, the photodetector is positioned closer to a bottom of the water seal chamber than the light emitting element. In certain embodiments, the air leak detection system is part of a chest tube drainage system. A method of detecting an air leak in a chest tube collection system is also disclosed.

A diagnostic system and method for a pressure regulator in a process plant is provided. The diagnostic apparatus includes a processor operatively coupled to the pressure regulator; a memory operatively coupled to the processor; and a sensor operatively coupled to an inlet valve of the pressure regulator, an exhaust valve of the pressure regulator, and the processor. A diagnostic module is stored in the memory, and when executed by the processor, presents a diagnostic tool at a user interface.

An apparatus for close visual inspection of subsea pipelines comprises a housing with a chamber that has an open side. The open side is adapted to be placed in sealing engagement against the pipeline. The chamber is flooded with clear water to improve the visual view. It is also described an apparatus for identification of a plume exiting from a leak The apparatus comprises a housing defining a chamber with a water permeable side that is adapted to face downward during use, and thereby being exposed to the exiting substance. A gas pressurizing device for creates a gas/water interface within the housing. An imaging device arranged above the water surface is adapted to image the water surface and detect id the water surface is being disturbed by the plume.

An apparatus for close visual inspection of subsea pipelines comprises a housing with a chamber that has an open side. The open side is adapted to be placed in sealing engagement against the pipeline. The chamber is flooded with clear water to improve the visual view. It is also described an apparatus for identification of a plume exiting from a leak The apparatus comprises a housing defining a chamber with a water permeable side that is adapted to face downward during use, and thereby being exposed to the exiting substance. A gas pressurizing device for creates a gas/water interface within the housing. An imaging device arranged above the water surface is adapted to image the water surface and detect id the water surface is being disturbed by the plume.

The document relates to a sensor arrangement for underwater detection of a leak in fluid carrying body, comprising a sensor support structure mountable to a carrier for enabling the sensor support structure to be suitably positioned or moved. A plurality of thermal sensors is distributed on the sensor support structure forming a sensor array. The sensors are provided by optical fibers connectable to an interrogator via optical signal connectors. Each fiber comprises intrinsic fiber optic sensors at respective locations within the fiber, forming the thermal sensors. The fibers are arranged on the support structure such that the intrinsic fiber optic sensors is distributed across the support structure to span a detection area. The document further relates to a method of performing leak detection as well as for discovering natural occurring leaks (sources).

Embodiments herein describe apparatus, systems and methods adapted to monitor underwater wells, boreholes, drill holes, etc. (subsea wells). Depending on embodiment, the apparatus, systems and methods can be configured to capture sensor readings and/or to monitor status of a target subsea wells.

A pressure lock for a gas system with a regulator, the pressure lock comprises a pressure lock body to be fluidically connected in said gas system, whereby gas can pass from a chamber in the body via lock connection means to the gas system and activation means for delivering gas from said pressure lock body and into the gas system thereby providing a lock-up pressure, whereby the gas from said pressure lock body provides an increased pressure in the gas system, whereby the regulator is blocked for a short period of time thus allowing the detection of leaks in the gas system downstream of the regulator.

A pressure lock for a gas system with a regulator, the pressure lock comprises a pressure lock body to be fluidically connected in said gas system, whereby gas can pass from a chamber in the body via lock connection means to the gas system and activation means for delivering gas from said pressure lock body and into the gas system thereby providing a lock-up pressure, whereby the gas from said pressure lock body provides an increased pressure in the gas system, whereby the regulator is blocked for a short period of time thus allowing the detection of leaks in the gas system downstream of the regulator.

A leak detection apparatus and method and a wafer electroplating method are provided. An air tightness state of a reaction chamber in a wafer electroplating device is detected in advance before a wafer electroplating process is performed, namely whether leak occurs at the reaction chamber is judged by inputting a detection gas to the reaction chamber and detecting a gas pressure value of the detection gas, and whether to perform the wafer electroplating process is determined according to a judgment result.

Aspects of the invention include methods and systems for a testing mechanism to be utilized when repairing and replacing a valve utilized on a tank car. The testing mechanism may comprise a pipe plug device configured to plug a siphon pipe located on a tank car and a pressure test device to conduct a leak detect test after the pipe plug device is removed from the siphon pipe. The pipe plug device may include a pipe plug bladder and a pipe plug pressure fitting to inflate and deflate the pipe plug bladder against a wall of the siphon pipe. The pressure test device may include a pressure test valve cap with a test valve bladder located on the pressure test valve cap, a bladder pressure fitting to inflate and deflate the test valve bladder, and a test pressure fitting to pressurize a valve, the test pressure fitting located on the pressure test valve cap.