Abstract: A test device and a test method for dynamic characteristics of a spring-loaded safety valve are mainly used for testing opening, emission and return seat characteristics of the safety valve. The air pressure stabilizer is used for stably adjusting gas pressure in a pressure vessel. The quick start and stop device is used for controlling opening and closing of the pressure vessel. The pipeline gas mass flow detecting device is used for detecting the mass flow of the gas in a pipeline. The safety valve stem displacement detecting device is used for detecting the displacement change of a safety valve stem. The acquisition system is used for collecting, processing and saving experimental data. The device of the present invention has simple structure and high precision, and provides guarantee for the test of the dynamic characteristics of the safety valve.

Abstract: It is described an apparatus for inspecting a pipeline, said apparatus including a cylindrical body (15) adapted to be transported inside said pipeline, an array of acoustical transducers (Tx,y) installed in the surface of the cylindrical body (15), the acoustical transducers being organized in columns and rows in a belt around the cylindrical body, a controller adapted to initiate a transmission of an acoustical signal from a first transducer (T2,2) and a reception of said acoustical signal from other transducers in said array surrounding the first transducer, the controller further being adapted to determine the direction to a flaw in the wall of said pipeline from the received acoustical signals.

Abstract: A test tool for use in testing a tubular component such as a pipe includes a body having first and second body portions together defining a sliding sleeve. Axially spaced sealing and gripping modules are provided, with one module located on the first body portion and another module located on the second body portion. A force-generating arrangement is provided to apply an axial test force to the tubular component via the modules. A test pressure is applied to a section of the wall of the tubular component and an axial load is applied to the wall section. Application of the axial load between the first and second modules applies the axial load to the wall section of the tubular component to facilitate strength testing of the tubular component.

Abstract: A method of testing pipes for use in making subsea pipelines comprises cutting a ring from one or more pipes of the type used to make the pipeline; forming flat, substantially parallel surfaces on the ends of the ring; providing means for measuring strain and deformation of the ring; mounting the ring in a pressure chamber such that the ends of the ring form seals with opposing walls of the chamber to isolate the inside of the ring from the outside; increasing the pressure outside the ring and measuring the strain and deformation on the ring as the pressure increases; and using the deformation and strain measurements to determine a wall thickness for pipes to be used for the pipeline.

Abstract: A device and method for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at once. It may transmit data electronically to a remote computer for analysis and graphic display.

Abstract: A method of testing pipes for use in making subsea pipelines comprises cutting a ring from one or more pipes of the type used to make the pipeline; forming flat, substantially parallel surfaces on the ends of the ring; providing means for measuring strain and deformation of the ring; mounting the ring in a pressure chamber such that the ends of the ring form seals with opposing walls of the chamber to isolate the inside of the ring from the outside; increasing the pressure outside the ring and measuring the strain and deformation on the ring as the pressure increases; and using the deformation and strain measurements to determine a wall thickness for pipes to be used for the pipeline.

Abstract: A device and method for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at once. It may transmit data electronically to a remote computer for analysis and graphic display.

Abstract: A device and method for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at once. It may transmit data electronically to a remote computer for analysis and graphic display.

Abstract: A pressure testing apparatus is provided for internally pressure testing pipe. A mandrel is secured to a frame and is adapted to receive a pipe thereon such that a gap exists between an outer surface of the mandrel and an inner surface of the pipe. A first end cap is disposed on an outer surface proximal a first end of the mandrel. A second end cap is connected to a second end of the mandrel. First and second seal members are disposed between the first and second end caps and the first and second pipe ends, respectively, such that the first and second seal members abut respective ends of the pipe disposed on the mandrel. A line is in fluid communication with the gap to fill the gap with a testing fluid.

Abstract: A high integrity protection system (HIPS) for the protection of a piping system downstream of a wellhead has an inlet connected to the wellhead and an outlet connected to the downstream piping system and includes: two sets of series-connected surface safety valves (SSVs) in fluid communication with the inlet, the two sets being in parallel fluid flow relation to each other, each set of SSVs consisting of two SSVs in series, either one or both of the two sets of SSVs operable as a flowpath for fluids entering the inlet and passing through the HIPS outlet to the piping system; two vent control valves (VCVs), each of which is connected to piping intermediate each of the two series-connected SSVs, each of the VCVs being in fluid flow relation to each other, each set of SSVs consisting of SSVs in series, either one or both of the two sets of SSVs operable as a flowpath for fluids entering the inlet and passing through the HIPS outlet to the piping system; two vent control valves (VCVs), each of which is connected

Abstract: A device for measuring the back pressure in chemical reactor tubes includes many automated features. Inflatable tube seals may be automatically inflated. The device may measure several tubes at once. It may transmit data electronically to a remote computer for analysis and graphic display.

Abstract: A continuous testing device for a water pipe, comprising a frame, a left fixed plate and a right fixed plate, a tested pipe section, a compensating pipe section, a central plate, two horizontal oil pressure cylinders, a vertical oil pressure cylinder, and a connecting tube. The left and right fixed plates provide fixed bases at left and right ends of the frame. The tested and compensating pipe sections are located between the left and right fixed plates. The tested pipe section is a tube body that allows monitoring. The compensating pipe section, separated from the tested pipe section by the central plate, has an inner space to be filled with liquid to exert a compensating axial force on the tested pipe section. The two horizontal oil pressure cylinders are respectively mounted next to upper and lower sides of the tested pipe section, exerting a horizontal force on the central plate. The vertical oil pressure cylinder is mounted below the central plate, exerting a vertical force on the central plate.

Abstract: A system for pressure testing the seals and fittings associated with at least one communication line passing through a well tool mandrel, each communication line housed within a communication line conduit defined through the well tool and sealingly engaged to each end of its corresponding communication line conduit by way of a fitting and the fittings also sealingly engaged to the communication line conduit. The system generally comprises a testing conduit, a testing passageway system, and a testing plug. The testing conduit is defined in the well tool mandrel. The testing passageway system is defined in the well tool mandrel and provides fluid communication between the testing conduit and the fittings and seals associated with each of the communication line conduits. The testing plug provides fluid communication between a pressure testing source and the testing passageway system.

Abstract: Device for checking the tightness of covers on a heavy metal container for transport and/or storage of radioactive materials, the said container comprising a cavity for nuclear materials delimited by a thick cylindrical shell closed at one end by means of a bottom fixed so that it is leaktight, and at the other end by at least two thick removable superposed covers, characterized in that the said covers are in contact with a shoulder formed in the shell, through flanges fitted with at least two concentric seals, that at least two ducts pass through the shell at each cover, leading through a first inspection orifice to the outside surface of the shell close to the cover in an accessible location, and through a second orifice, one into the space between the cover concentric seals, and the other into the space between the said cover, the shell and the immediately superposed cover, each inspection orifice optionally being connected to a tightness measurement and inspection circuit.

Abstract: A method of the present invention automatically detects gas leak from a valve on a gas-containing vessel, or the like, based on detected absolute pressure and pressure fluctuation. The method can detect both fine leak and gross leak. The method comprises a method for automatically detecting gas leak from a target object provided on gas piping comprising the steps of: issuing command for forming an airtight room communicating with said target object; issuing command for pressurizing said airtight room until a predetermined pressure; detecting absolute pressure and pressure fluctuation of said airtight room, measured with a gauge; and discriminating whether gas leaks from said target object or not based on the detected absolute pressure and pressure fluctuation.