Abstract: A safety hose system for use in delivering water from a water supply source to an inlet connector of a washing machine. In one embodiment, the system comprises a first connector engageable with the inlet connector of the washer machine and a second connector engageable with the water supply source. The system further comprises first hose having a first and seconds end connected to first and second connector, respectively. The system further comprises a second hose concentrically and sealed about the first hose and extending from said first connector to said second connector. The system further comprises an over-spill portion formed by said second hose being disposed within said first hose. The over-spill comprises a water reactive material which will change the color of any water entering into the over-spill portion, The system further comprises a third hose engaged with the second hose and in communication with the over-spill space.

Abstract: A multi-gage blowout preventer test tool for testing different size ram and annular BOP's in one trip has an outer test tube assembly and an inner tube assembly connected in telescoping relation. The exterior of the outer tube has a plurality of pipe gage diameters corresponding to different drill pipe sizes. A top sub at the top end of the outer tube assembly connects to the drill string and contains an upper seal assembly and stinger. The bottom end of the inner tube assembly is secured to a bottom sub and the bottom end of the outer tube assembly is releasably connected to the bottom sub in the collapsed position. The bottom sub is connected to a test plug and tail pipe assembly and the tool is lowered through the riser pipe and BOP stack to set the test plug in the wellhead.

Abstract: An improved system for the non-destructive testing of the fluid tight integrity of an installed fluid transfer line such as a drain pipe or vent and wastewater system of a building. A removable test baffle is installed in a seat extending radially into the sidewall of a pipe or other fluid transfer line to isolate an installed portion of the fluid line for testing. The test baffle comprises a pair of gaskets to improve the effectiveness of the baffle in sealing or isolating the line and a domed central web to facilitate testing at increased pressures. The test baffle optionally further includes a lightweight, low cost ribbed construction and a means for removing the baffle from either the convex or concave side of the dome without leaving behind any portion of the baffle to impair fluid flow within the line. On removal, the baffle is flexed into a saddle shape and removed from the line without need for dismantlement of the line.

Abstract: A tube loading apparatus and method for tensile strength and leak testing an elongated, hollow tube such as a steam generator heat transfer tube of a steam generator plant. The apparatus may be used to determine the axial or compressive load placed on a hollow tube.

Abstract: A device for providing access to the interstitial region between an inner pipe and an outer pipe which coaxially define the region. The inner pipe has at least one terminal end extending from the outer pipe to leave a portion of the outer wall of the inner pipe exposed to thereby expose the interstitial region. A boot is provided for defining a chamber with a larger end snugly fitting the outer pipe and a small end snugly fitting on the exposed outer wall of the inner pipe. The boot has an access port communicating with the interior of the chamber to provide access to the interstitial region.

Abstract: A method for testing threaded joints and threaded members comprising the steps of lubricating one or both threaded members, making up a joint, subjecting the joint to a pressure differential, and attempting to detect flow through said joint, characterized in that said method includes the step of subjecting said joint to heat during the test.

Abstract: The instant invention consists of an inner cannula of hosing amenable to transport of a liquid coupled with an outer cannula or cannulae of hosing amenable to transport of a gas. As respects one embodiment, affixed to outer walling of the inner cannula and to inner walling of the outer cannula are rigid struts, typically three or four, at 120.degree. or rights angles with respect to one another at various points along the respective lengths of the cannulae that serve to maintain separation of the cannulae from one another at times when the inner cannula is filled with a liquid and the outer cannula is filled with a gas. A second embodiment is strut free. Each cannula has an ingress end whereat a liquid is introduced into the inner cannula and whereat a gas is introduced into the outer cannula.

Abstract: A T-fitting such as for use inside a containment box for connecting a primary pipeline to a gasoline dispenser has two flanges which connect to the pipeline and a main T-element sealed to each flange by a sealing element such as a gasket. The flanges thread onto each end of the primary pipeline. The main T-element has a stem which is threaded to a pipe leading to a gasoline dispenser. The flanges of the T-element are bolted to the main body of the T-element with the rubber gasket in between to seal the primary pipeline to the T-element. A method for installing a secondary containment system using the T-fitting includes the steps of fastening the stem of the T to the pipe leading to the gasoline dispenser, fastening the flanges of the T-fitting to primary pipeline segments, and fastening the flanges to the main body of the T element.

Abstract: A T-fitting such as for use inside a containment box for connecting a primary pipeline to a gasoline dispenser has two flanges which connect to the pipeline and a main T-element sealed to each flange by a sealing element such as a gasket. The flanges thread onto each end of the primary pipeline. The main T-element has a stem which is threaded to a pipe leading to a gasoline dispenser. The flanges of the T-element are bolted to the main body of the T-element with the rubber gasket in between to seal the primary pipeline to the T-element.

Abstract: A method of predicting rupture failure for corroded transmission pipelines uses a model that accounts for the effects of residual and thermal stresses, and settlement of the pipe following installation. The pressure required for failure under a fixed bending moment is different from the pressure required wherein the same bending moment is produced by the settlement of the pipe because the bending compliance increases with plastic straining. The failure criterion depends upon whether or not the hoop strain exceeds the difference between the ultimate hoop strain limit of the material and the remaining hoop strain capacity needed for the material to shed the axial stresses due to bending.

Abstract: A high speed camera takes an image in the vicinity of a ball 3 and a club head 12, while a high speed camera 5 takes an image in the vicinity of the top of the swing of a golfer 1, and the images are recorded in a high speed video tape recorder 6. The recorded images are reproduced, swing time, a swing speed and a head speed are detected using a personal computer 15, and a shaft with an optimum flex for the golfer is selected based on the swing time, the swing speed, the swing time and the head speed, or the swing speed and the head speed.

Abstract: The present invention provides a single compact fitting for air, CO.sub.2, or nitrogen pressure testing either gas piping or waste piping. Each fitting is used for gas pipes of a particular outside diameter and waste pipes of a single larger diameter. The typical plumber would have a set, for example four, of the inventive fittings available, one for each size waste pipe that is be tested. The inventive fitting couples easily to either gas fuel piping or waste piping. A single air-pressure gauge is used to test either type of piping system. The inventive fitting is not limited to waste, vent, or gas piping systems; it can also be used to couple to other piping systems. The inventive fitting, in addition to being more versatile than conventional air-pressure test fittings, is also smaller and more compact.

Abstract: A system designed to measure and record in real time data relating to translational and angular acceleration of an individual's head during normal sporting activity. One embodiment of the device includes at least three orthogonal accelerometers mounted within a sports helmet together with means for recording, in real-time, the data output from the accelerometers. The data is either recorded on a memory card or other mass memory means installed in the helmet, or is transmitted to a nearby receiver for reception and storage on a computer's hard drive or other conventional mass storage device. The device provides real-time storage of translational and angular acceleration data over a length of time such that cumulative exposure effects and thus limits can be established for the individual's further or future participation in the sport. The data also allows detection of the precise motions of the head which precede the occurrence of a severe head injury.

Abstract: An adaptor assembly connects a primary pipeline of a double wall pipeline to a dispensing pipeline at a ground level gasoline service station dispenser unit in a manner which permits access to the primary pipeline for installation and periodic replacement purposes. The assembly includes a casing and a disengageable seal system. The casing is attached to a terminus of the secondary pipeline. The disengageable seal system is operably associated with the casing to terminate an annular space between the primary pipeline and the secondary pipeline to contain the flow of any leakage from the secondary pipeline. In some embodiments of the invention, a coupling is attached to a terminus of the primary pipeline to provide a flowpath for conveyance of gasoline. The disengageable seal system is also operably associated with the coupling.

Abstract: A method and improved apparatus for detecting leaks in pressurized pipeline systems, which compensate for the thermally induced volume changes of the liquid in the line during a test that are produced by both the nonlinear changes in the mean temperature of the liquid and the pressure-induced perturbations of the temperature of the liquid.

Abstract: A safety hose apparatus is provided for delivering water from a standard threaded hose bib to an appliance. The apparatus includes a first end fitting that has a first pipe. A first threaded connector is rotatably attached to the first pipe for communicably connecting the first pipe to the hose bib. A second end fitting includes a second pipe and a second threaded connector is rotatably connected to the second pipe for communicably connecting the second pipe to a standard threaded appliance inlet. An elongate outer hose segment extends continuously between the first and second fittings and includes a first end interengaged with the first end fitting and spaced apart from the first connector to fully expose the first connector. A second end is interengaged with the second end fitting and spaced apart from the second connector to fully expose the second connector. An elongate inner hose segment extends through the outer hose segment and communicably interconnects the first and second pipes.

Abstract: An apparatus that allows for the testing of pipes, either underground or in other inaccessible locations, for leaks and determines the exact locations and severity of said leaks. By the use of a ball, attached to a retaining string, traveling through a piping system on the flow of liquid that is exiting through the pipe leak, a user is capable of determining the location of the leak within inches, even on long line piping systems. The invention utilizes a reservoir of liquid that is forced through the pipe under test using a pump. A calibrated reel of retaining string then provides the exact location of the leak.

Abstract: A flow measuring device for indicating the leak status of a pressurized fluid-carrying line pressurized by a pump includes an electronic leak sensing module connected in fluid communication with the pressurized line and configured for insertion within a detection port of a pump manifold. The module includes a thermal sensor effected by flow through the pressurized line, whereby leaks in the pressurized line are detected by monitoring the thermal sensor for changes in output signal that correspond to flow through the pressurized fluid-carrying line. The flow measuring device includes a system control unit for monitoring the electronic leak sensing module and indicating the leak status of the pressurized line. Wires which provide power to the leak sensing module, the system control unit and the pump for pressurizing the pressurized line are also used for communication.

Abstract: A system for detecting leaks from buried pipes which transport fluids other than water. The system includes a pipe for transporting the fluid, a fluid-wicking member which lies beneath the pipe, is wetted by the fluid when the fluid leaks from the pipe, and is permeable to water, and a fluid sensor which contacts the fluid-wicking member and is capable of detecting the fluid.

Abstract: A pipe line with integral fault detection and localization capability includes an inner electrically conductive pipe line element; a layer of dielectric material coaxial with the inner pipe line element, and an outer conductive coaxial element which, in combination with the inner pipe line element and the dielectric layer forms a coaxial transmission line for transporting fluids over long distances, and identifying and localizing faults.

Abstract: An apparatus for detecting leaks in fluid lines having any type, size, or style of fitting, the apparatus comprising in general a source of pressurized gas which is delivered into the fluid line to be tested. The fluid line is sealed on one end by a blanking plug mounted in a bracket, where the blanking plug sealingly mates with any type of fitting. The other end of the fluid line is connected to the gas source by an injector plug mounted in a bracket, the injector plug also sealingly mating with any type of fitting.

Abstract: A reclamation apparatus for capturing leaking hydraulic fluid in a hydraulic system having a higher pressure system end and a lower pressure system end and for delivering the captured fluid back into the system includes an inner fluid line, for carrying hydraulic fluid between two points in the hydraulic system, having a higher pressure first line end and a lower pressure second line end, a reinforcing sleeve containing the inner fluid line and having an inside diameter larger than the inner fluid line outside diameter, an outer fluid line containing the inner fluid line and the reinforcing sleeve and having a first line end, a second line end and an inside diameter larger than the reinforcing sleeve outside diameter so that a containment space is provided between the reinforcing sleeve and the outer fluid line, a line coupling structure connected to the inner and outer fluid line first ends, a manifold structure connected to the inner and outer fluid line second ends and including a manifold body connected t

Abstract: An apparatus and method for pigging, flooding, and pressure testing pipelines utilizing a sliding sleeve valve connected at the end of a pig receiver which automatically opens upon fluid pressure in the pipeline reaching a predetermined limit allowing fluid trapped in the pipeline to escape, and is then automatically closed when the pig enters the pig receiver to allow pressure testing of the pipeline. The present apparatus and method eliminates the need and expense of a crew and/or a separate support vessel with divers or an ROV system at the downstream end of a pipeline during pigging, flooding, and pressure testing of the pipeline.

Abstract: In a motorcar having a compressed fuel cylinder charged with a compressed fuel disposed in a compartment, pipes connected to the fuel cylinder within the compartment are connected to a joint unit penetrating a partition wall partitioning the compartment from an outside and the joint unit is connected to pipes connected to an internal combustion engine and the like out of the compartment. A fuel charge passage, a fuel supply passage and a relief passage in a cylinder cap of the fuel cylinder and a fuel charge passage, a fuel supply passage and a relief passage in an interior side of the joint unit are connected with each other through an interior charge pipe, and interior supply pipe and an interior fuel relief pipe, respectively. A fuel charge pipe, a fuel supply pipe and a relief pipe out of the compartment are connected to a fuel charge passage, a fuel supply passage and a relief passage in an exterior side of the joint unit.

Abstract: An apparatus and method for leakage testing of a pressurized/suction piping system. The apparatus includes a pump assembly for pressurizing the test system formed by the apparatus and the piping system, a pressure source connected to at least one input line assembly, an input line for supplying test fluid to the apparatus, an output line for discharging test fluid, and suitable adapters for connecting the input line assembly to the pipes being tested. In use, the apparatus is installed near the pipeline system to be tested. After all system pumps are turned off and the crash valve on each line is closed, the apparatus is initialized and a test pressure ramping procedure is initiated. The test pressure is maintained for at least approximately 30 minutes. If the measured leakage rate over a 30-minute period is less than a preselected rate, the pipeline system meets applicable standards.

Abstract: In a pipeline system having a plurality of pipe segments joining a fluid supply tank to a fluid dispenser, the invention includes a pipe coupling assembly for use on at least one terminal end of a fluid transfer pipe, where the transfer pipe has an inner tubular member for transferring fluid and an outer tubular member and an interstitial space therebetween. The coupling assembly comprises a transition coupling for attachment to the pipe segment to provide a first path for the fluid in the inner tubular member and a second path for the interstitial space. The coupling assembly further comprises a transition fitting for attachment to the transition coupling to provide separate paths for the transfer fluid and the interstitial space, where the interstitial space provides a means for performing leak detection or fitting integrity tests during application of either a vacuum condition or pressurized gas input via such selective access.

Abstract: A vibration sensor includes a substrate (5), a plate-like diaphragm (3) forming a capacitor, and holding means (2), (4), (6) for holding the diaphragm so as to be movable in parallel to the substrate; The diaphragm includes a plurality of flexible displacement portions (3c), (3d) for enabling the supporting portion of the diaphragm to be movable in parallel to the substrate. When vibrations are applied to the vibration sensor, the diaphragm portion of the diaphragm is vibrated and electrostatic capacity formed between the substrate and the diaphragm is changed based on the vibrations. Vibrations are detected on the basis of the change of electrostatic capacity. Since the vibration sensor includes the flexible displacement portions, the diaphragm becomes difficult to be vibrated due to a sound pressure and a vibration detected output can be prevented from being disturbed by the sound pressure.

Abstract: A high speed camera takes an image in the vicinity of a ball 3 and a club head 12, while a high speed camera 5 takes an image in the vicinity of the top of the swing of a golfer 1, and the images are recorded in a high speed video tape recorder 6. The recorded images are reproduced, swing time, a swing speed and a head speed are detected using a personal computer 15, and a shaft with an optimum flex for the golfer is selected based on the swing time, the swing speed, the swing time and the head speed, or the swing speed and the head speed.

Abstract: A pipeline leak detection apparatus is provided for fluid dispensing system having a dispenser, a storage tank, and a pump and an electric cut-off valve arranged in hydraulic series with the outlet of the storage tank. The pipeline to be monitored extends between the cut-off valve and the dispenser. A control circuit that operates the cut-off valve such that the valve opens with use of the dispenser and closes with non-use in order to hydraulically isolate the storage tank and pump from the pipeline and dispenser during periods of non-use. The leak detection apparatus is connected in a by-pass loop around the pump. It includes a small pot or plenum, a float switch, and a return line for fuel to spill back into the storage tank. The plenum inlet is connected to a branch in the pipeline near the cut-off valve, and its outlet is connected to the return line to the storage tank. The float switch is mounted to the plenum so that its float extends into the plenum chamber.

Abstract: In a process for monitoring the tightness of pipelines, in particular sewage pipeline systems, one or several control channels or tubular openings are arranged in the wall of the pipeline in its longitudinal direction. The mutually facing ends of the pipelines are interconnected so that the mutually facing ends of the control channels or tubular openings are tightly interconnected. The interconnected control channels or tubular openings form a closed pressure chamber for the whole pipeline system. The control channels or tubular openings are filled with a test medium under static pressure, pressure measurement means are associated with the control channels or tubular openings, and a leakage in the area of a sleeve or wall of the pipeline is detected when the pressure of test medium falls between two measuring points.

Abstract: A dual containment pipe system suitable for installation into an existing conduit includes an impervious containment pipe adapted to be installed as a primary containment pipe and a crush-resistant and flexible spacer element disposed about the entire external circumference of the primary containment pipe. The spacer is formed of a plurality of spaced apart and parallel substantially crush-resistant longitudinal members with a plurality of spaced apart parallel flexible connecting ribs bonded thereto. The longitudinal members form a uniform space when the containment pipe suitable for installation of leak detection systems including cables or based on measuring pressure differentials. The new impervious primary containment pipe may be cured in place, folded and formed, diameter reduced pipe, or any other pipe suitable for pipeline rehabilitation.

Abstract: A method and apparatus for testing a plumbing system in a more dependable and cost-effective manner. During the rough-in plumbing phase of construction, the drain pipe leading from the plumbing system in a building to the city sewer main or main sewer line is positively sealed off by a test cap welded in the pipe at the location of the clean-out. Access to the test cap is maintained through the clean-out. Pressurizing the rough-in plumbing to test the same can then proceed knowing that if any leaks occur, they are in the branch plumbing on the building side of the test cap, and not at or in the test cap. Following successful completion of the initial test, the top-out plumbing job is completed, leaving the test cap welded in the clean-out or drain pipe. After the roof vents are in, the second test of the plumbing system is made, again knowing that if the system shows any leaks, they are the result of a failure in the plumbing work and not a failure of the test cap.

Abstract: This invention is directed toward the detection fluid infiltration into an underground pipe system, and more particularly is directed toward the qualitative and quantitative detection of liquid leaks into, and out of, underground sewer systems. The invention is particularly suited for detecting the infiltration of ground water into sewer systems such that the leaks can be precisely located as a precursor to time and cost efficient repairs. Fluid properties are measured with a probe at station locations which are preferably manholes. Any leaks in the system are first determined to a geographic location spanning two adjacent manholes. The locations of the leaks are further define to a very high geographic resolution by floating the probe from the upstream manhole toward the downstream manhole while continuously recording fluid property measurements at the surface of the earth. Results are preferably presented in the form of a survey map.

Abstract: A leakage gas detector for a semiconductor device includes a plurality of inflow apertures into which leakage gas flows. A detector sequentially detects the leakage gas in each of the inflow apertures via a plurality of valves, so as to leak test each of the plurality of inflow apertures for presence of possible leakage gas. Each of the plurality of valves are connected to corresponding of the plurality of inflow apertures to control the suction of the leakage gas into the detector. A controller selectively opens and closes each of the plurality of valves.

Abstract: A device for detecting leakage in a fuel supply system of an internal combustion engine in which fuel is pumped from a fuel container under pressure by at least one pump and reaches injection valves over corresponding lines, the device has a control unit, a plurality of operating condition detecting sensors detecting operating conditions of the internal combustion engine and sending signals to the control unit, a return line with a valve formed so that excess fuel is returnable to the fuel container, the valve being connected with the control unit so that when the control unit detects a predetermined operating state of the engine from the signals of the operating condition sensors, the control unit closes the valve, and a pressure sensor, and a pressure sensor operative for measuring a fuel pressure when the valve is closed and connected to the control unit so that the pressure sensor supplies to the control unit a signal corresponding to the measured pressure, and the control unit compares the signal corresp

Abstract: A test head assembly for heat exchanger tube bundles consists of a structural frame to support the bundle, test heads, sealing devices between the test heads and the tube sheets, clamps securing the test heads to the bundle with the sealing devices therebetween, a supply reservoir for the test fluid, a collection reservoir to receive the test fluids after testing to permit proper environmental disposal, a control station, pumping assemblies and related equipment. The structural frame is suitable for holding various common arrays of tube bundles for heat exchangers in a test configuration. The sealing devices include two sealing plates, preferably fiat discs, mounted on opposite ends of the assembly and biased toward each other either hydraulically or mechanically, hydraulics being the most desirable biasing force, and two sealing rings, each typically a short cylinder of the proper outer diameter to fit the gasket surface of the bundle between the seal plates and the ends of the bundle to be tested.

Abstract: A method and apparatus for testing a new pipe coupling for a leak that could be too small to be detected visually involves a section of pipe, a hole through the pipe, a 90 degree ell affixed to the hole from inside the section of pipe, a length of tubing from the 90 degree ell extending to a tee outside the section of pipe, an air gage attached to the tee, and a tire pump attached to the tee for applying about 100 psi of air pressure to the interior of such pipe coupling through the hole to a small space between the section of pipe and the coupling, for locating a leak in the coupling after first sealing the pipe coupling to the pipe section, as done by observation at the air gage of a decrease in air pressure at such small space.

Abstract: A motor vehicle time speed recorder that includes a hollow parallelepiped-shaped housing, time apparatus, speed apparatus, graphical time apparatus, and graphical speed apparatus. The hollow parallelepiped-shaped housing has a front with an elongated slot and a side with an aperture. The time apparatus is responsive to the time of day. The time apparatus is disposed in the hollow parallelepiped-shaped housing and generates a time signal, so that the time of day can be monitored. The speed apparatus is responsive to the speed of the motor vehicle. The speed means is disposed in the hollow parallelepiped-shaped housing and receives a speed signal, so that the speed of the vehicle can be monitored. The graphical time apparatus graphically represents the time signal generated by the time apparatus and is disposed in the hollow parallelepiped-shaped housing, so that the time of day can be graphically represented.

Abstract: A portable notebook computer has a shock/vibration testing system incorporated therein and including first and second memory chips and a miniature accelerometer mounted on the computer motherboard and interconnected to the power supply board and storage battery portions of the computer by a power supply switchover circuit. During operational periods of the computer the switchover circuit connects the power supply board output to the accelerometer input, and the accelerometer output to the first memory chip, so that accelerometer output data indicative of the operational shock/vibration loads borne by the computer is received and stored in the first memory chip. During non-operational periods of the computer the switchover circuit connects the storage battery output to the accelerometer input, and the accelerometer output to the second memory chip, so that accelerometer output data indicative of the non-operational shock/vibration loads borne by the computer is received and stored in the second memory chip.

Abstract: A system for excavating and rehabilitating underground pipelines. The system including an earth removal unit, a coating removal unit and a defect detection unit each of which is self-propelled to ride on and/or along underground pipelines. The earth removal unit includes an adjustable housing adapted to be mounted about an exposed portion of the underground pipeline. The earth removal unit further includes front and rear wheel assemblies adapted to engage the top surface of the underground pipeline. A plurality of endless belts are suspended from the housing so that they assume a position beneath the underground pipeline. The endless belts are independently operable and include a plurality of cutting/digging elements. The endless belts are offset in both the horizontal and vertical directions with respect to the underground pipeline. The coating removal unit includes at least one endless chain for removing the deteriorated coating on the underground pipeline.

Abstract: A hemodialysis apparatus is supplied with dialysis fluid or a dialysis fluid component through a supply loop conduit 12. A shut-off device 22, such as a magnetic valve, is arranged between the apparatus and the supply conduit 12. A buffer volume is enclosed between the shut-off device and an additionally arranged shut-off device such as a non-return valve. During disinfection of the apparatus, in order to prevent disinfecting fluid from flowing back into the supply loop conduit and therewith an endangering other dialysis apparatus connected to the same supply loop conduit, in the event that the shut-off device 22 leaks, the buffer volume is pressurized to a defined pressure, which is preferably higher than the pressure in the surrounding conduit sections. This pressure is detected by a pressure sensor P. The signal generated by the pressure sensor P is monitored by a microprocessor 28.

Abstract: An apparatus for testing a section of pipe for leaks, includes mirror-image first and second portions each having an attachment assembly for attaching the portion to the section of pipe to be tested, an enclosure device for enclosing the section of pipe, and a sealing element for sealing the attachment assembly to the pipe. Also included is a resilient expansion device for permitting movement of the first portion relative to the second portion to accommodate expansion of the pipe, the expansion device being secured to the first portion and to the second portion.

Abstract: Air is passed under pressure into a pipe under test and into a reference chamber connected to the pipe by a valve while recording at intervals of every few seconds the temperature in the reference chamber, the temperature in the pipe and the absolute pressure in the reference chamber. When the test pressure has been reached the valve is closed and the differential pressure between the pipe and the reference chamber is measured. The valve is opened to equalize the pressure and then closed again and the differential pressure drift rate is measured. This is repeated several times. A computer is used to calculate a creep prediction curve. A comparison is made to see whether the pressure drift rate due to creep and leak only in the pipe independent of any temperature change in the pipe is trending towards crossing the curve or not.

Abstract: A digital circuit for adapting the output of a closed-loop accelerometer to a utilization circuit where the cycle time of the rebalance loop of the accelerometer is unrelated to the cycle time of the utilization circuit. A register receives and stores a digital value representative of measured acceleration and a bank of serially-arranged divide-by-two counters accepts the output of the rebalance loop clock. A gate arrangement makes one-by-one correlations between the states of the register and the outputs of the divide-by-two counters. A trigger circuit receives the gate outputs, providing a pulse when triggered by a downgoing edge of a square wave output of the gate array. A counter receives the pulse stream and is gated, in turn, in accordance with the cycle time of the utilization circuit so that the accelerometer data employed therein is representative of the portion of the acceleration occurring during a cycle of the utilization circuit.

Abstract: This invention relates to a mobile pipe testing system. The system carries its own supply of a test fluid and an independent power source. During operation, a pipe is lifted by an inbound conveyor and is delivered to a pre-test station, from which it is lifted by the arm and deposited into a testing cradle. The ends of the pipe are sealed by test plugs which are moved into engagement with the pipe ends, and a pressure is applied to the interior of the pipe to test the pipe for possible leakage. Once the test is complete, the test plugs are moved away from engagement with the pipe, and the lifting arm moves the pipe segment into a holding station, wherein the pipe is allowed to drain, while the fluid is filtered, collected and recycled back into a fluid container. The lifting arm then transports the pipe to the outbound conveyor which off loads the pipe.

Abstract: The present invention is directed to methods and apparatus relating to an accelerometer electrical signal recorder and playback module. The recorder module may be manufactured in lightweight configuration and includes analog memory components to store data. Signal conditioning circuitry is incorporated into the module so that signals may be connected directly from the accelerometer to the recorder module. A battery pack may be included for powering both the module and the accelerometer. Timing circuitry is included to control the time duration within which data is recorded or played back so as to avoid overloading the analog memory components. Multiple accelerometer signal recordings may be taken simultaneously without analog to digital circuits, multiplexing circuitry or software to compensate for the effects of multiplexing the signals.

Abstract: An apparatus and method for pressure testing a body having a chamber by utilizing differential pressures to create a seal, whereby the body can be pressure tested without undesired forces being exerted upon the body.

Abstract: A pressurized gas insulated screened line comprises a plurality of sections, two adjacent sections being separated by a junction enabling demounting of a section and each section comprising at least one conductive bar held in place in a cylindrical enclosure. Each section is equipped with at least one optical fiber running from one end to the other of the section and disposed inside the enclosure. A control arrangement connected to the fiber is accommodated inside the enclosure. The optical fibers of N adjacent sections forming a module are connected to each other. One end of the N interconnected optical fibers is connected to a control station.

Abstract: An apparatus for pressure testing of tubulars. The apparatus comprises a tester body having multiple spaced-apart external circumferential seal elements expansible by piston movement; a seal gas saver valve connected to the tester body; and a pressurized seal and test gas source to supply gas to the tester. The tester body is inserted into a tubular so that the seal elements are astride a desired test area, typically a tubular connection. Seal gas pressure is then applied to move the pistons and expand the seal elements against the tubular wall, forming a test chamber. Test gas is then introduced into the chamber to achieve a desired pressure, and external containment and sensing means are used to detect any escape of test gas, thereby showing a leak. When the test is complete, the test gas pressure is released, and the seal gas pressure is reduced, with the seal gas flowing back into a reclamation tank.

Abstract: The invention is an improvement of the method and apparatus used to test gas service lines at residential or business locations such that the application of air pressure into the system, the reading and monitoring of the gauge and the ultimate release of the air pressure from the system is conducted with the use of one device which is applied at one location.