Abstract: A portable suction nozzle for removing layers of fat, oil and grease (FOG), scum, sludge and the like from the surface or bottom of tanks used in water and sewage treatment plants, septic systems and the like. The device can be used by an operator working in such environments, as well as honey wagon operators, oil spill response teams and the like. The device can be held in place by a holster arrangement mounted to a tank to be cleaned.

Abstract: A spreader plate assembly for a pumped source of sand, water and rocks. Includes a generally horizontal plate spaced upstanding threaded rods affixed integrally with the plate, a splash guard affixed to the plate and located adjacent to a predetermined edge portion. An angled pipe receiving end attached to a pipe line containing slurry under pressure and an exiting end dispose above the plate located forward of the guard. Spaced arms extend horizontally from the exit end of the pipe and having collars slide on respective rods. Nuts are threaded below and above each collar, for adjusting distance between the exit end and plate to adjust the slurry output. Nuts adjust the collars to be equidistant from the plate, or the nuts on the forward rod can be adjusted to increase the distance of its collar from the plate to control the angle and control the direction of slurry.

Abstract: A portable suction nozzle for removing layers of fat, oil and grease (FOG), scum, sludge and the like from the surface or bottom of tanks used in water and sewage treatment plants, septic systems and the like. The device can be used by an operator working in such environments, as well as honey wagon operators, oil spill response teams and the like. The device can be held in place by a holster arrangement mounted to a tank to be cleaned.

Abstract: A spreader plate assembly for a pumped source of sand, water and rocks. Includes a generally horizontal plate spaced upstanding threaded rods affixed integrally with the plate, a splash guard affixed to the plate and located adjacent to a predetermined edge portion. An angled pipe receiving end attached to a pipe line containing slurry under pressure and an exiting end dispose above the plate located forward of the guard. Spaced arms extend horizontally from the exit end of the pipe and having collars slide on respective rods. Nuts are threaded below and above each collar, for adjusting distance between the exit end and plate to adjust the slurry output. Nuts adjust the collars to be equidistant from the plate, or the nuts on the forward rod can be adjusted to increase the distance of its collar from the plate to control the angle and control the direction of slurry.

Abstract: A suction mouth (10) for mounting on the front of a subsea mining tool and to be pushed into sediment. The suction mouth comprises a hollow body (12) having an entrance opening (14) and an exit opening (16), wherein the body converges from the entrance opening towards the exit opening. The entrance opening has a lower lip (20) and an upper lip (22), and the upper lip comprises an extension (22a) projecting forwardly and upwardly relative to the lower lip to form a canopy over the entrance opening. The suction mouth (10) may include a valve (30) on the body downstream of the entrance opening which is operable to selectively provide a further entrance opening into the body. Where such a valve is present, the consistency of the material sucked in can be regulated.

Abstract: A device for removing sea bed includes a conveying line at least partially surrounded by sea water and an emergency emptying device arranged in the conveying line. The conveying line is configured to have a sea bed be removed therethrough so that a removed sea bed is transportable to a surface in a conveying direction. The emergency emptying device is configured so that the removed sea bed moving in a direction counter to the conveying direction in the conveying line is dischargeable from the conveying line into the sea water.

Abstract: A method is provided for transmitting inter-cell interference information by a serving Evolved Node B (ENB) in a communication system. The method includes, if a specific resource is allocated to a User Equipment (UE) located in a service region of the serving ENB, checking a location of the UE in the service region; setting a High Interference Sensitivity (HIS) of the UE depending on the result of the checking; determining a location of the UE in an adjacent cell of the service region; setting a High Interference Transmission (HIT) of the UE depending on the determination result; and transmitting a High Interference Indicator (HII) for the specific resource, which includes the HIS and the HIT, to the adjacent cell.

Abstract: A system for the levelling and consoliation of the sea bed that comprises of a suction hood (1) driven into the ground, a pieza (2) coiled into the hood (1), some L-shaped tubes (3) welded to the part (2), some tubes (4) connected perpendicularly to each one of the horizontal stretches of the tubes (3), some inclined continuous plates (5) on the free ends of the tubes (4), some tubes connected telescopically (6) on the inside of the suction hood and a pinion (7) that allows the tubes to turn (3). Furthermore, for the consolidation of the sea bed, comprised of a hopper (8) in which the grout that is going to be used is stored to consolidate the ground, some bombas de cavidad progresiva that are located inside the vertical part of the tubes (3) and some pinions connected to the axle of the pumps.

Abstract: Disclosed herein is a velocity and concentration adjustable coupling pipe apparatus equipped between a lifting pipe and a collector. The apparatus includes a coupling pipe having a lower inlet and an upper outlet which are different in diameter from each other. A seawater inlet pipe passes through a side surface of the coupling pipe to permit inflow of seawater. A slurry flow control valve is provided in the coupling pipe to control the inflow of slurry. A seawater flow control valve is provided in the seawater inlet pipe to control the inflow of the seawater. A first sensor measures concentration of slurry discharged through the upper outlet. A second sensor measures velocity of the discharged slurry. A third sensor measures velocity of slurry introduced into the lower inlet. A control panel controls the opening ratio of each of the slurry and seawater flow control valves.

Abstract: There is disclosed an underwater excavation apparatus (5) comprising: means (10) for disturbing or excavating an underwater location, comprising mass flow excavation means (20); and means (15) for extracting or sucking excavated material from the location to another location comprising further mass flow means (25). Means (30) to restrict spoil and/or direct spoil to the suction means (25) are provided and comprises a baffle (35) provided within a cavity (45) of a housing (40) having an open base (60). An outlet (105) of the mass flow means (20) and an inlet (110) of the suction means (25) are located within the housing (40), while an inlet (100) of the mass flow means (20) and an outlet (115) of the suction means (25) are located external of the housing (40).

Abstract: The present invention relates to a draghead (1) for a trailing suction hopper, comprising a visor (2), revolvable around a first axis (6) for removing soil, and a suction line (31) connected to the visor (2) for the removal of the loosened soil, characterised in that the draghead (1) is provided with a pressure plate (21), which comprises a number of mainly disc-shaped penetrating bodies (22) on the soil-facing side of the pressure plate (21), in such a way that their circumferential edge (23) is capable of transferring forces to the soil.

Abstract: An excavation technique for a stratum capable of excavating a submerged stratum such as a layer containing an underground resource by using laser irradiation in liquid is provided. In this technique, a laser beam transmitted through laser transmission means 20 is irradiated in liquid 90 in form of a laser beam having a wavelength with high absorptance of the liquid 90 by laser-induced bubble generation means 35, generating a bubble flow 36, thus excavation of a submerged stratum may be carried out by using a laser-induced destruction effect. Moreover, a laser beam 41 having low absorptance of the liquid 90 is irradiated by laser irradiation means 39 and passed through the bubble flow 36, thereby applying a thermal effect to a stratum to destroy rock and excavate the stratum. The destruction effect and the thermal effect also may be cooperatively worked.

Abstract: Method and device for subsea removal of cuttings from a borehole by means of ejector (5), pump (3) and suction hose (6), the ejector (5) being powered by a pump (3) that is rigidly attached to ROV (2), said ejector (5) being one with external nozzle, while said ROV (2) with pump (3) is connected to the ejector only when removal of cuttings is to take place.

Abstract: There is disclosed a suction dredge system and method. The suction dredge system may include a suction dredge head, an exhaust hose connected to the suction dredge head, a high pressure fluid source connected to the suction dredge head for providing a flow of high pressure fluid to the suction dredge head to induce a vacuum in the suction dredge head, and the suction dredge head including an automatic blockage clearing device. The method of suction dredging may include providing a flow of high pressure fluid within a suction dredge head in a first direction for inducing a vacuum at an intake of the suction dredge head, and changing the direction of the flow of the high pressure fluid within the suction dredge head to a second direction for clearing a blockage at the intake of the suction dredge head.

Abstract: Dredge heads, for use with a dredging system, include one or more movable members, e.g. grate members, adapted and configured to selectively extend across the opening of the dredge head. The movable member(s) enables a user to clear the dredge head of plugging masses or blockages without having to de-energize the dredge system pump. Also, the movable member(s) enable a user to clear the dredge head of plugging masses or blockages without requiring the user to manually, by using his or her hand, withdraw the plugging masses or blockages from the opening of the suction/dredge heads.

Abstract: An intake conduit apparatus comprises an intake conduit adapted at a downstream output end thereof for connection to an intake of a vacuum conveyor, and adapted at an upstream input end thereof to facilitate entry of granular material. Ramps slope inward and downstream from the interior wall of the intake conduit, and there is a vent hole through the wall of the intake conduit adjacent to a downstream end of each ramp such that air enters the intake conduit adjacent to the downstream end of each ramp.

Abstract: A method for moving subsea rocks and sediments which can be at significant depths, in connection with removal of protective rocks around installations where maintenance is to be conducted. Tubing with an ejector nozzle is arranged completely externally in relation to the tubing on a standard, remote controlled submarine (ROV), so that the ejector nozzle produces a pressure gradient through the tubing. An inlet end of the tubing is located with the rocks and sediments to be moved, which are sucked into the tubing and blown out of the opposite end of the tubing.

Abstract: A method of forming a trench in the bed of a body of water, the bed having an initial undisturbed upper surface, comprises suspending a pressure line from a vessel floating on the body of water, the pressure line terminating downwardly in a downwardly directed nozzle. The nozzle is positioned a small distance above the bed, and water is pumped under pressure on board the vessel and is discharged via the pressure line and nozzle downwardly against the bed surface with the water pumped at an overpressure between 0.01 bar and 20 bar and at a flow rate of 0.25 to 20.0 cm per second. The distance of the nozzle above the surface of the bed is not more than ten times the diameter of the water jet defined by the nozzle, preferably about six times the diameter of that water jet.

Abstract: The present invention is a lance for removing dirt or other substances from an underground hole, by the use of air and water under high pressure. The water is used as an abrading material or lance to loosen dirt in a hole or to pick or chip off substances which are attached to a pipe. A limited amount of water is used during the operation of the apparatus, to prevent the formation of wet mud.

Abstract: The present invention is a lance for removing dirt or other substances from an underground hole, by the use of air and water under high pressure. The water is used as an abrading material or lance to loosen dirt in a hole or to pick or chip off substances which are attached to a pipe. A limited amount of water is used during the operation of the apparatus, to prevent the formation of wet mud.

Abstract: The present invention is useful for dredging underneath a floating vessel, where a conventional dredge cannot reach the location of the material to be dredged. A neutral buoyancy pipe is attached to the end of the suction pipe and acts as an extension of the suction pipe. The vertical position of the neutral buoyancy pipe is controlled by adjusting the buoyancy of the neutral buoyancy pipe. The horizontal position of the neutral buoyancy pipe is controlled both by the anchoring system which sweeps the dredge back and forth and by a position adjusting system at the forward end of the neutral buoyancy pipe.

Abstract: An installation for sucking up material from the bed of a body of water includes a housing (1) that is provided with a suction pipe (2) which extends toward the bed of the body of water and that has a suction opening (22) and is connected to a pump (4) located in the housing (1). The suction opening can be selectively spaced at various distances from the housing by relative movement of sections of the suction pipe.

Abstract: An installation for sucking up material from the bed of a body of water includes a housing (1) that is provided with a suction pipe (2) which extends toward the bed of the body of water and that has a suction opening (22) and is connected to a pump (4) located in the housing (1). The suction opening can be selectively spaced at various distances from the housing by relative movement of sections of the suction pipe.

Abstract: An ocean riser assembly for conveying fluids between the seabed and the surface of the sea includes a fluid conveying pipe formed into a helical configuration or into a planar cyclically undulating configuration, such as a sinusoid, that extends longitudinally from the bottom of the sea to the surface. One or more flexible and preferably elastic tension members extend in the longitudinal direction of the riser assembly and are secured to the pipe at spaced intervals, so that they absorb tension forces applied between the ends of the riser assembly. The helical or undulating configuration of the riser pipe decouples axial stresses in the pipe caused by internal fluid pressure from stresses caused by external tension forces acting on the riser assembly, the external tension forces being converted to torque and bending moments acting on the pipe itself. This arrangement permits substitution of carbon steel pipe for flexible pipe, at substantial cost savings.

Abstract: A dredging apparatus for dredging waterways containing sediment includes a hood having a passage for water and sediment to enter the hood under the influence of a submersible dredge pump apparatus. The dredge pump apparatus includes an inlet line having an inlet opening positioned in the passage of the hood, and an outlet line which communicates with the inlet line and extends exteriorly to a spoil collection area. A dredge pump draws water and sediment from within the passage into the inlet opening and through the inlet and outlet lines. To prevent clogging of the inlet line by sediment and ensure a continuous dredging operation, replacement water is introduced adjacent to the inlet opening from a water source in response to sensed pressure variations in the inlet line caused by the onset of clogging. A closed dredging circuit is created by using the spoil collection area as the source of replacement water.