Abstract: The testing device for measurement of a hydraulic leak rate of a spraying valve (11) with a closable outlet opening(11B) includes a vessel (10) filled with an indicating liquid (12) and a device for holding the valve to be tested with the outlet opening (11B) in an inclined position pointing downward into the indicating liquid during testing, a riser tube (14) formed as a glass capillary tube connected with the vessel (10), a balancing reservoir (17) also connectable with the vessel (10) but disconnectable from the vessel (10) with a shutoff valve (15), a light source (18) positioned relative to the riser tube (14) so as to illuminate the riser tube (14) and the liquid level (M) in the riser tube (14) and a linear scanning camera (19) positioned relative to the riser tube (14) so as to observe the height (H) of the liquid level (M) in the riser tube for accurate measurement of a change in the height (H) of the liquid level M when the closed valve is pressurized.

Abstract: A method and apparatus for hydrostatically testing connections between segments of pipe whereby pressurized hydrostatic test fluid is selectively applied to the connection such that the pressures are principally applied in the vicinity of the radial orifices leading into the sealing elements of the connection and not radially to the inner or outer annular surfaces of the connection in the vicinity of the sealing elements of the connection which would tend to substantially affect the bearing pressure of the sealing elements. In addition, a method and apparatus for selectively applying pressurized hydrostatic test fluid such that the pressures are applied to those areas where the bearing pressure of the sealing elements of the connection is sensitive to the applied pressures, thus manipulating the bearing pressure and controlling the sealing capacity of the connection during hydrostatic leak testing.

Abstract: An apparatus for mounting a rotary actuator, having a rotary drive bushing, to a valve stem of a rotary controlled valve having first and second primary seals and a fugitive fluid collection chamber therebetween. The apparatus includes a mounting member disposed between the actuator and the valve which is removably fastened thereto to permit the valve stem to coaxially engage the rotary drive bushing provided in the rotary actuator. O-rings are affixed to flanges that extend from the ends of the mounting member for creating a fluid-tight seal between the mounting member and the actuator and between the mounting member and the valve. The fluid-tight mounting member serves to provide a secondary fugitive fluid collection chamber outboard of the secondary stem seals that is adapted to collect the fugitive fluid that passes the secondary stem seals. A fluid detection device may be attached to the secondary fugitive fluid collection chamber via a port provided in the mounting member.

Abstract: A test device and method of testing includes a BOP skid mounted to center an upright housing and piston beneath the BOP. A flange on the BOP mates with a flange on the housing to enable the BOP to be clamped by a ring. The ring is divided into two halves having upper and lower encircling lips. In the housing, the piston seats a seal ring to isolate fluid in a chamber for pressure testing of the seal ring with the flange and other components of the BOP. In addition, the test device and method can be applied to industry standard flanges on valves and the like.

Abstract: The fixed structure (10) incorporates an abutment surface (10a) upon which a corresponding abutment surface (8a) of the transportable element (1) comes to bear, with the interposition between the abutment surfaces (8a, 10a) of at least two concentric annular sealing joints (13a, 13b). The pressure in the space (18) between the sealing joints (13a, 13b) and bounded by the abutment surfaces (8a, 10a) is measured during the emplacement of the transportable element (1) to determine whether it is leakproof. The measured maximum pressure and/or the variation of pressure measured over time is compared with predetermined values corresponding to a correct emplacement of the transportable element (1).

Abstract: Apparatus and method for detecting fluid leakage into an enclosed leakage chamber or space sealed by a fluid seal exposed to pressurized fluid from a flow line or pressure vessel. Upon leakage of fluid from the flow line or pressure vessel past the seal into the leakage chamber or space, the leaked fluid is communicated to a piston chamber in a fluid indicator device. Upon the reaching of a predetermined high fluid pressure, the piston is actuated for extending an indicator rod of the fluid indicator into a projected position for visual observation. For testing or inspection of the leaked fluid, a separate removable adaptor is provided for moving the piston to a fluid bypass position to permit removal of fluid from the piston chamber containing the leaked fluid, or to permit injection of an external fluid such as a sealant into the piston chamber and leakage chamber.

Abstract: A hydraulic chuck device for testing the integrity of a ferrule sealed to a tube proximate one end of the tube. The device includes a chuck body having an inlet end with an internal collet engaging surface and a second end. Collets are mounted inside the inlet end of the body. The collet has faces shaped to conform to a ferrule on a tube, and normally urges the collets against the engaging surface of the body. An actuator is connected to a source of fluid, and is mounted in the body. The actuator includes a ferrule seal which is normally in a ferrule engaging position for introducing the fluid to the tube. A handle is provided for inserting a ferrule and tube into the device to allow the collets to engage the ferrule on one side of its seal to the tube and the ferrule seal to engage the ferrule on the other side of its seal to the tube when fluid is introduced into the tube.

Abstract: A plastic liner pipe penetration adapter designed for sealably penetrating a moisture impervious thermoplastic sheet or liner, particularly suitable for lining reservoirs, hazardous waste disposal sites, outdoor fluid containment areas and other similar applications, without damaging the sealing characteristics of the liner and which also allows field testing of the sealability of the liner after the installation of the adapter. In one embodiment, an inner tubular housing member defining a passage through the liner is inserted through a plate and connected thereto. An outer tubular housing member is coaxially aligned about the inner tubular housing member and sealably welded at a first end to the plate. An annular end piece is inserted over the inner tubular housing member in order to seal a second end of the outer tubular housing member to the inner tubular housing member, thereby creating a pressure test chamber between the tubular housing members and the annular end piece.

Abstract: A method for monitoring unusual signs such as partial heatings and partial electric discharges in an apparatus to be monitored, in which a sealed gas is enclosed into a tank containing the apparatus, and at least one of monitor gases represented by formulas (I) and (II),C.sub.n X.sub.2n (I)C.sub.n X.sub.2n+2 (II)wherein X is at least one of H, F, Cl, Br and I, and n is one of 2, 3, 4 and 5, is charged into the tank, and in which a reaction product gas of the monitor gas, generated due to an abnormality of the apparatus to be monitored, is detected using a detector. A gas-charged apparatus including an unusual sign monitor is also disclosed.

Abstract: An improvement upon spectroscopic cells of the type that have a single window sealed to each window opening of the cell body. The improvement is: (1) to position an additional window at each such opening, each such window being juxtaposed, spaced apart and biplanar with each original window so that there is a sealed space between each additional window and each original window; and (2) to position at least two passageways through the body of the cell, each such passageway in fluid communication with each of the above formed sealed spaces so that any leakage of a sample past the original seal is vented from the cell via one of the passageways to a detector to be detected.

Abstract: An improvement upon cylindrical MIR element cells of the type that have a single seal at the openings of the cell body through which the cylindrical MIR element extends. The improvement is: (1) to position an additional seal between each such opening and the cylindrical MIR element so that there is a sealed space between the second seal and the original seal at each such opening; and (2) to position at least two passageways through the body of the cell, each such passageway in fluid communication with each of the above formed sealed spaces so that any leakage of a sample past the original seal is vented from the cell via one of the passageways. In a highly preferred embodiment of the present invention the portion of the cell body surrounding each such opening is made demountable and is provided with additional passageways and seals so that a purge fluid can be flowed through the passageways to a flow through detector to detect any leakage of a fluid sample past one of the original seals.

Abstract: A pipe joint pressurizing unit for testing pipe joints and grouting pipe joints with grout, the pressurizing unit having a rigid cylindrical core member with an expandable rubber sleeve mounted on the outside of the core member with a telescoping component for delivering a fluid such as air or grout to the outside of the expandable sleeve, the telescoping conduit including an outlet pipe slidably installed in a guide tube, the outlet pipe having a distal end connected to the expandable sleeve and slidable in the guide tube on expansion of the sleeve, with an o-ring seal sealing between the guide tube and the outlet pipe while permitting the outlet pipe to slide in the guide tube on expansion of the sleeve.

Abstract: Valve leakage is quantified by measuring a variable that is commensurate with a heat transfer characteristic of the pipe wall (30) and comparing the measurements to data stored in a database (84) which embodies a quantitive relationship between an index commensurate with the heat transfer characteristic variable and a range of valve leakage rates that could occur for the given valve. In a straight forward implementation of the invention, a thermal hydraulic analysis of the specific valve and associated piping are performed a priori to establish a database of pipe wall temperature downstream of the valve as a function of steam flow rate. The wall temperature is simply measured and compared with the database. In another embodiment, an air cooled sleeve (54) is installed around the pipe (48) downstream of the valve (50) and a controlled flow of air is passed through the annulus (62) between the pipe and the sleeve.

Abstract: Significant time is wasted in proving the integrity of a weld associated with the welding of a flange onto a pipe. Generally this takes place by bolting the pipe into the circuit and testing the completed circuit. The test plug according to the invention discloses means for placing a seal internal of the pipe and connecting to a flange which has been welded to end of a pipe a flange plate and bolting the flange plate to the flange in the conventional manner. The test plug defines therethrough at least two channels one for conveying into the pipe bounded by the flange plate and the seal a testing media such a fluid or liquid and the other channel for purging the same. The immediate area around the weld can thus be tested for improper welding rather than requiring the total pipe link to be tested in situ.

Abstract: A system is used to completely drain a hose used in conjunction with a tanker truck or railroad tank car. The system includes a holding tank and a shutdown system as well as a hose emptying unit.

Abstract: A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressurized gas actuates the test tool at substantially the same pressure as is used for testing the pipe section. A flexible enclosure confines the test gas which leaks from the pipe section. The enclosure define a substantially annular chamber around the area to be tested to confine leakage test gas to prevent its dissipation into the atmosphere. An aperture is provided in the enclosure to permit a sensing probe to be inserted into the annular chamber between the enclosure and the pipe section to sense the presence of test gas.

Abstract: A safety structure for detecting fluid leakage from a valve having an exposed end of a rotatable valve stem connected to a valve element within the valve for rotating the valve element between an open and a closed position. The safety structure comprises a jacket, and an elongated handle extension disposed within the jacket for rotation about its axis. The handle extension includes an end which extends outward from the jacket for turning the handle extension. The jacket terminates in an annular flange which is attached to the valve in an isolating configuration having the exposed end of the valve stem covered, and the handle extension connected to valve stem via a slot on the lower end of the handle extension and a pair of opposed flats on the covered end of the rotatable valve stem over which the slot extends for transferring the rotation of the handle extension to the valve stem.

Abstract: A method and apparatus for hydrostatically testing connections between segments of pipe whereby pressurized hydrostatic test fluid is selectively applied to the connection such that the pressures are principally applied in the vicinity of the radial orifices leading into the sealing elements of the connection and not radially to the inner or outer annular surfaces of the connection in the vicinity of the sealing elements of the connection which would tend to substantially affect the bearing pressure of the sealing elements. In addition, a method and apparatus for selectively applying pressurized hydrostatic test fluid such that the pressures are applied to those areas where the bearing pressure of the sealing elements of the connection is sensitive to the applied pressures, thus manipulating the bearing pressure and controlling the sealing capacity of the connection during hydrostatic leak testing.

Abstract: A valve maintenance process is described that allows for the inspection and testing of valve stem packing and back-seat leakage. The process uses the characteristics of incompressible fluid flow to check the integrity of the valve back-seat, to allow the controlled removal of the complete packing set and to confirm the newly installed packing set is not leaking. The process is designed to reduced down-time and to improve the engineering quality of valve repair.

Abstract: A fluid control valve with leak detection and containment features for use in a fluid handling system incorporating one or more flow controlling devices each including: an actuator; a weir valve and associated valve housing; and a pair of spaced apart diaphragms, one of which serves as the closure member for the weir valve and the other providing a secondary seal defining the limits of a containment chamber for at once preventing contamination of the controlled fluid, protecting the actuating mechanism and allowing immediate detection of valve closure failure. A piston member disposed within the chamber is coupled to the two diaphragms, and a fluid detection device is disposed in communication with a sealed containment chamber formed between the two diaphragms. The system includes electronic control apparatus responsive to the detection device and is operative to instantaneously shut down the system in the event of a detected failure.

Abstract: A steam trap operation detector provided with a vibration detecting section and a arithmetric section. The detecting section includes a probe, a diaphragm for generating ultrasonic vibration in response to mechanical vibrations sensed by the probe and a vibration sensor for converting the ultrasonic vibration into an electrical signal. The detector also includes an arthimetric section for receiving an amplified signal from the vibration sensor and processing the same into information indicative of the operation of the steam trap.

Abstract: A leak detection apparatus and method for detecting leaks across an O-ring sealing a flanged surface to a mating surface is an improvement in a flanged surface comprising a shallow groove following O-ring in communication with an entrance and exit port intersecting the shallow groove for injecting and withdrawing, respectively, a leak detection fluid, such as helium. A small quantity of helium injected into the entrance port will flow to the shallow groove, past the O-ring and to the exit port.

Abstract: Apparatus and methods are provided for testing a blow-out preventor system of a well, which blow-out preventor system is designed to close upon both a smaller drill pipe string and a larger drill pipe string. The apparatus includes a first elongated cylindrical testing mandrel having an outside diameter substantially equal to an outside diameter of the smaller drill pipe string, and a second elongated cylindrical testing mandrel having an outside diameter substantially equal to an outside diameter of the larger drill pipe string. The first testing mandrel is telescopingly received within the second testing mandrel.

Abstract: A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressurized gas a actuates the test tool at substantially the same pressure as is used for testing the pipe section. A flexible enclosure confines the test gas which leaks from the pipe section. The enclosure defines a substantially annular chamber around the area to be tested to confine leakage test gas to prevent its dissipation into the atmosphere. An aperture is provided in the enclosure to permit a sensing probe to be inserted into the annular chamber between the enclosure and the pipe section to sense the presence of test gas.

Abstract: This invention relates to an apparatus for testing the gas-tightness of joints between hollow bodies, for example, pipes. With the apparatus, a test space with two concentric chambers of variable sizes is formed. The outer one is filled with a gaseous test medium and the inner one with an incompressible pressurized medium. It is thereby possible to reduce substantially the quantity of the gaseous test medium. The safety of the entire apparatus is improved extraordinarily.

Abstract: A fluid leak indicator (30) for detecting and indicating leaks in visually inaccessible fluid tubing joints (20, 21), such as those obstructed by insulation (24), includes a bag system (25) and a wicking system (30) surrounding or wrapping the joints (20, 21) under the visual obstructing material (24). Leaking fluid is collected in the bag (25) or on the wicking material (34) where it is conducted along the wicking material (34) to a visibly accessible capturing transparent indicator bulb (35) for providing a visual indication of the leak without requiring a chemical change in the capturing indicator bulb (35).

Abstract: An improved well structure to be installed within a wellhead housing having an internal landing seat and an internal support groove above the landing seat, a hanger having an internal bore and an external landing shoulder with the hanger positioned within the housing so that the hanger landing shoulder lands on and transmits hanger loads to the housing landing seat and a blowout preventer secured to the upper end of the housing including a closure having a body which lands within the hanger bore and including an external downwardly facing load shoulder, a split support ring positioned below the shoulder and a sleeve coacting with the split support ring so that when said closure is exposed to blowout preventer testing pressures the sleeve wedges the support ring outwardly into tight supporting engagement with said internal housing groove so that testing pressure loads are transmitted from said body loading shoulder through said support ring to said housing.

Abstract: An apparatus for detecting when bolts, holding coacting surfaces of two objects together become loose. A gas supply is connected to a gas passageway in one of the bodies which extends to the coacting surfaces. A gas reservoir is positioned downstream of the gas supply and a flow orifice is connected to downstream of the reservoir. A pressure measuring switch is connected to the gas passageway and is actuated upon a drop of gas pressure to a predetermined value. An alarm is connected to the switch and when actuated provides an indication of the separation of the coacting surfaces.

Abstract: An apparatus and a method for simultaneously testing the integrity of the welds in the plate pairs of a heat exchanger of the type made up of a stack of pairs of annular plates. The plates of each pair are substantially identical, having corresponding sets of first and second gas ports arranged alternately about each plate. The plates of each pair are joined together by continuous welds formed about each of their corresponding and aligned first and second gas ports. Those portions of the plates located between adjacent first and second gas ports are spaced from each other to permit passage of gas therebetween. The test apparatus comprises a fixed base member and top shiftable vertically toward and away from the base member between open and closed positions. The base member and the top member support, respectively, upper and lower annular seal assemblies.

Abstract: A fixture for testing and servicing a MSIV of a nuclear power generation plant includes a cover plate for bolting to the valve body and a support member extending from the plate for supporting the valve stem. A pressure cylinder attaches to the support member for loading the stem to conduct a leak rate test. Means are provided for pressurizing the valve body to perform a leakage test. Stem bearings spaced apart along the stem provide accurate stem alignment, and prevent bending of the stem under test loading. Seals between the fixture, the body and the stem permit pressurization of the valve body above the poppet, permitting a leak test of the MSIV without reassembly of the actuator structure. In another embodiment, a collar having an axially directed thrust face mounts on the stem and bears against a thrust bearing to permit rotation of the stem during assembly.

Abstract: A selective fluid flow control device has a control element which is held in sealing relationship with a housing, with first and second seals being formed to confine the fluid flow through the control element. The first and second seals define a sealed chamber from which the fluid is excluded, and a gas conduit communicates between outside of the housing and the sealed chamber for applying a test pressure to the chamber to test the quality of these seals. In a preferred embodiment, the selective fluid control device is a filter arrangement for a clean room or the like, and the seals are formed against the filter gasket by a seating arrangement formed of an extruded rail that has a web and first and second ribs, the ribs being biased against the gasket.

Abstract: A separable, lightweight and inflatable pipe joint sealing and testing apparatus for large diameter pipes having a multi-membered arched channel support structure having a circular configuration, and having three parallelly disposed channel members extending outward therefrom, and having outer channel members and a centrally disposed testing channel member. A unitary inner sleeve sealing member coextensive with the channel members is provided for covering the channel support structure. The pipe joint sealing and testing apparatus further has a pair of inflatable annular sealing ring members for placement in the outer channel members, a compressed air source means in communication with the pair of inflatable sealing rings, and a compressed fluid ingress and egress structure through the port of the centrally disposed channel member.

Abstract: Apparatus for testing the impermeability to gases of connections between pieces of piping, especially between pipes and sleeves, utilizes tow elastic sealing bodies that are spaced apart from each other. The sealing bodies can be pressed against the surfaces of the pipes in response to the application of axial stresses to thus confine the testing location which is to be monitored. The first sealing body is located in the pipe inwardly of the testing location and is adapted to be pressed from within against the surface of the pipe, and the second sealing body can be pressed against the periphery of the sleeve. This renders it possible to test, already within the manufacturing plant, even short pieces of piping for impermeability to leaks.

Abstract: A method of sealing an electrical cable (2) into a wall (1) utilises a cable entry gland (3) having axially extending sleeves (3a), and the cable gland (3) is sealed to the cable (2) by means of shrink-down sleeving (9) extending over the sleeve portions (3a) and the surface of the cable (2). The cable gland is sealed into an aperture in the wall (1) by means of two "O" ring seals (5, 6) located on opposite sides of the wall (1) between a radial collar of the cable gland (3) and a clamping member (4). A test port (10) is coupled to the space between the portions of sleeving (9) and the "O" ring seals (5, 6) by fluid passages (8, 7) enabling testing of the integrity of the seal, for example by means of a device according to U.S. Pat. No. 2,145,233.

Abstract: An apparatus for testing the connection between a segment of pipe and a coupling comprising a cylindrical body member adapted to be inserted inside one end of the pipe segment, the body member having provided therein a plurality of hydrostatically operated pressure resistant sealing packers that are spaced apart and are forced laterally outwardly of the cylindrical body and into contact with the inner surface of the pipe segment and coupling, thereby sealing off the interior of the pipe segment so as to isolate a test fluid introduced under pressure in the annular space created between the sealing packers; and an inlet port in one end of the cylindrical body member and a fluid passageway provided longitudinally within the cylindrical body member and communicating with the inlet port and the annular space for admitting test fluid under pressure into the annular space.

Abstract: A steam leakage measuring device particularly for use in a steam trap having a detector member which includes a vibration sensor and a temperature sensor which are connected separately to a signal processing or arithmetic unit receiving and processing the temperature and vibration signals from the detector member. The temperature sensed by the temperature sensor is converted into a saturated pressure measurement and a true steam leakage measurement is developed in the signal processing unit based upon a predetermined relationship between the sensed vibration level and a leakage measurement for a particular developed pressure level.

Abstract: A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressurized gas actuates the test tool at substantially the same pressure as is used for testing the pipe section. A flexible enclosure confines the test gas which leaks from the pipe section. The enclosure defines a substantially annular chamber around the area to be tested to confine leakage test gas to prevent its dissipation into the atmosphere. An aperture is provided in the enclosure to permit a sensing probe to be inserted into the annular chamber between the enclosure and the pipe section to sense the presence of test gas.

Abstract: The leakage of hazardous fluid from the pipe sections or from between the pipe sections is monitored by butting concentric pipe section sets which define a cylindrical leakage collection and monitoring means to a special fitting which has a pair of seals and a passage to the collection means therebetween, so that leakage at the pipe intersections is collected and passed to the normal pipe-defined leakage collection and detection apparatus used to monitor pipe section leakage.

Abstract: An adaptive control system regulates operation of a mechanical seal assembly by reacting dynamically to changes in seal operating conditions to provide minimal wear with minimal fluid leakage. The disclosed "self-learning" method adapts automatically to arbitrary changes in fluid medium temperature and pressure, as well as shaft rotation speed, by detecting a limit cycle type oscillation of a seal-related variable, such as temperature of a seal face and/or fluid temperature. This variable is monitored via a microcomputer-based system which identifies these abrupt oscillations or spikes. The control algorithm selects a particular displacement of an actuator to modify the seal face deflection to the optimal value, and in this way attains maximum seal life while minimizing leakage.

Abstract: Two thermistors are mounted in a fluid detection probe, one thermistor having its surface exposed to the ambient fluids, and the other encapsulated in an insulator, such as RTV, that has a thermal conductivity greater than air. The thermistors are connected in a resistance bridge circuit between ground and a positive digital circuit voltage, which circuit applies power to the thermistors, heating them. The side of the thermistors toward the positive voltage is connected to the inputs of a comparator. When air is present, the encapsulated resistor cools more than the exposed one and, therefore, the encapsulated resistors resistance is higher producing a higher voltage at its comparator input than the exposed resistor. In the presence of a liquid, the RTV insulates its thermistor from the cooling effect of the liquid, and its comparator input voltage is therefore lower than the voltage of the exposed thermistor comparator input.

Abstract: A body is provided with longitudinally spaced first and second annular grooves for receiving first and second longitudinally spaced annularly spaced seal and lock ring segment assemblies therein to sealingly engage and lock with a pipe coupling and a single pipe end engaged therewith for forming a fluid receiving test chamber that extends across the single connection between the pipe end and the coupling. A fluid passage in the body conducts fluid to move said first and second seal and lock ring segment assemblies into sealing and locking engagement with the pipe and coupling, respectively, to form the fluid receiving test chamber. A second passage conducts fluid to the chamber for testing the single connection between the members from inside the members to the exterior thereof through the single connection. A leak in the connection is determined by instrumentally noting a pressure drop in the chamber or by visually noting leakage of fluid at the connected pipe coupling end.

Abstract: Leakage of a pipe wall is detected by forming a test chamber around the pipe radially opposite the wall area to be tested by bringing together a pair of test chamber halves each including a semi-annular anvil segment, an outer housing segment and an elastomeric seal sandwiched between the segments with the ends of the anvil segments of the respective test chamber halves being brought into abutment and continued closing movement of the test chambers causing the outer housing segments to extrude the elastomeric seals radially inwardly around the non-yielding anvil and against the pipe surface and circumferentially to effect a hermetic seal at the meeting ends of the test chamber halves and at the pipe wall surface. Thereafter the test chamber formed between the pipe surface and the encircling anvil ring is pressurized and changes in the pressure are read as a function of pipe wall leakage.

Abstract: An apparatus for hydrostatically testing the pipe threads on the end of a length of pipe onto which a coupling is adapted comprising a cylindrical body member that is inserted inside the end of the pipe and having attached thereto a hydraulically activated pressure resistant first seal that contacts a plurality of second seals arranged annularly of the cylindrical body member between its flange and the cylindrical body whereby the second annular seals are forced outwardly and into contact with the inner surface of the pipe being tested in order to seal off the interior of the pipe so as to isolate test fluid introduced under pressure to the area surrounding the connection between the pipe and the cylindrical body member, a cylindrical nipple like pressure resistant third seal arranged at the opposite end of the cylindrical body member that is screwed into the exposed interior threads of the coupling, a fluid passageway that is arranged in the cylindrical body member for introducing a testing fluid under press

Abstract: An apparatus and method are provided for pressure testing pipe and fittings systems. A seal has a disk portion and a flange portion. The seal is permanently attached to the inside of a fitting on the distal end of the pipe section to be tested, thereby blocking fluid flow. The section is installed and tested by conventional means. After testing, a pull-tab formed in the seal is removed to permit fluid flow through the seal. Subsequent sections can then be installed and tested.

Abstract: A leakage testing apparatus includes a pull bar surrounded by an array of arcuate segments having teeth that engage and deform the inner surface of a tube. When tension is applied to the pull bar, a cam forces the segments to move outwardly to contact the tube while maintaining a parallel relationship to said pull bar.

Abstract: A method of testing pipe sections at an oil rig floor by means of an internal pipe testing tool and a pressurized gas containing helium in a ratio of helium to a carrier gas of at least about 1:2856 by volume. The gas is pressurized in a hydraulic accumulator remote from the rig floor. The pressurized gas actuates the test tool at substantially the same pressure as is used for testing the pipe section. A flexible enclosure confines the test gas which leaks from the pipe section. The enclosure defines a substantially annular chamber around the area to be tested to confine leakage test gas to prevent its dissipation into the atmosphere. An aperture is provided in the enclosure to permit a sensing probe to be inserted into the annular chamber between the enclosure and the pipe section to sense the presence of test gas.

Abstract: There is disclosed a test stand for the pressure testing of a valve which comprises a flat support table defining a valve testing station onto which a port of a valve can be placed, means provided in the support for directing fluid pressure medium into the port when the valve is placed on the support table, and a set of jaws uniformly spaced around the testing station and mounted for slidable movement in unison along respective radial guides between a release position in which a valve can be placed on, or removed from, the support table, and a holding position in which the jaws engage with the valve, or a part connected to the valve, in order to centralize the valve between the jaws on the testing station.

Abstract: A device and method are shown for detecting leaks in the differential pressure measuring passageways of an orifice meter tube. A body having a threaded end region is inserted within the differential pressure measuring passageway to be tested. A stem is slidingly received within an internal bore provided in the body when the body is engaged within the passageway. The stem has an exposed end which extends externally from the body and an inner end which is insertable through the internal bore of the body and into the passageway to be tested. A packing cap seals the region of the internal bore adjacent the exposed end of the stem and a deformable seal located on the inner end of the stem is actuated by manipulating the stem exposed end to seal off the opening of the passageway into the orifice meter tube. A test port located on the body communicates with the internal bore of the body for connection of vacuum testing equipment to test the integrity of the passageway.

Abstract: An apparatus and method is disclosed for testing leaks in welds securing a wellhead to a caisson on which the wellhead is mounted without waiting for the welds to cool. The wellhead is placed in co-axial, overlapping relationship around a portion of the caisson on which it is to be mounted to form an annular chamber between the caisson and wellhead. The chamber has an open annular upper junction and an open annular lower junction formed by the overlap between the wellhead and caisson, and a continuous weld is placed along each of these junctions to secure the wellhead to the conduit. Oil is heated to a temperature similar to the temperature of the welds, wellhead and caisson after welding, and this oil is introduced into the chamber before the welds, wellhead and caisson have cooled to test for leaks in the welds.

Abstract: Repaired fluid conveying tubes are tested for leaks by isolating the repaired region from the remainder of the tube and then pressurizing the isolated region with a suitable gas. The isolation is accomplished by axial compression of one or a pair of seals which expand radially when subjected to axial force.