JPH10244991A - Maintenance method of hull of petroleum storing ship - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for carrying out perfectly the maintenance of the hull of a petroleum storing ship and a submerged unmanned device by the operation of the remote control device on land. SOLUTION: In this method, a submerged remote operation carrying truck 5 is moved just under the petroleum storing ship 12 by the carrying truck and respective member remote operation device for inspection 3 on land 13 near the petroleum storing ship 12 and the inspection, cleaning and examination of the outer wall surface of the petroleum storing ship 12 are carried out by changing respective members 7 for inspection, cleaning and examination stored changeably to a machine frame movable in the arbitrary direction under seawater mounted on the carrying truck 5. In addition to that the inspection, cleaning and inspection of the hull of the petroleum storing ship are carried out by respective members 7, 8, 9 stored in the machine frame 5 by operating the submerged remote operation carrying truck 5 by the carrying truck and respective members remote operation device for inspection 3 on the land, the deposits on the submerged part are discharged onto the land by operating a submerged surface cleaning member by a submerged surface cleaning member remote operation device 4 on the land through the carrying truck 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to maintenance of an underwater hull of an oil storage ship at an oil storage base and a maintenance method for processing a removed material generated by the maintenance.

[0002]

2. Description of the Related Art Conventionally, an oil storage base is provided with several oil storage boats collectively installed on a remote island or the like in consideration of an accident or the like, and the oil storage boat is about 100 m wide and 400 m long. Of a super-large rectangular box of
Most of the hulls of oil storage vessels are always in seawater, and shells adhere to the hull below the surface of the water, and corrosion of steel occurs, so every 12 years. You are required to have one regular inspection.

[0003]

In order to perform the periodic inspection of the oil storage ship, a very large dock is required, and such a dock is not usually located at a short distance as described above. In addition, as an oil storage base, several oil storage vessels are grouped together in one place, and each oil storage vessel is connected to a dolphin of cargo handling berth, and the surrounding area is double surrounded by oil fences. In order to dock a single oil storage vessel, it is necessary to separate it from the dock berth dolphin and remove the double oil fence, which requires time and effort, and also requires a very large oil storage vessel without navigation equipment. There is a drawback that enormous docking costs are required to operate a long distance to the dock, and shellfish attached to the hull are removed by the cleaning performed at the time of periodic inspection and accumulated on the seabed, There is a drawback that requires no small effort to the work to handle deposits.

The present invention solves the above-mentioned disadvantages, and inspects the side and bottom surfaces of a hull required for periodic inspections while operating at an oil storage base without operating an oil storage boat. Allows maintenance of the hull of an oil storage ship by performing all inspections including removal of attached matter, removal of the removed matter, corrosion of the outer hull steel plate, ie, thickness measurement and non-destructive inspection for flaw detection. It is an object to obtain a method.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention installs a land operation equipment including a carrier and a remote control device for each member on a land near an oil storage ship. An underwater remote control carriage connected with a composite cable with a water absorption hose between the operating equipment and the equipment is controlled by the carriage and each member remote control device for inspection.
The underwater remote controlled carrier and the undercarriage mounted on the underwater remote controlled carrier that can be moved in any direction in the sea are connected by a composite cable. Inspection, cleaning, and inspection components housed interchangeably in frames are separately mounted and lifted from the underwater remote-controlled carriage toward the oil storage ship, and the required surface of the outer wall of the oil storage ship is inspected, cleaned, and inspected. Oil storage ship hull maintenance method.On the land near the oil storage ship, install a land operation equipment facility consisting of a transport trolley, a remote control device for each inspection member, and a remote control device for the sea floor cleaning member. And the onshore operating equipment are connected by a composite cable with a water-absorbing hose, and the underwater remote-controlled carriage is moved to a position directly below the bottom of the oil storage ship by the remote-controlled carriage and each member for inspection. At the same time, the undercarriage remote-controlled carriage mounted on the underwater remote-controlled carriage is connected with a composite cable between the underwater remote-controlled carriage and the underwater remote-controlled carriage. It is exchangeably housed and floats from the underwater remote controlled carrier to the oil storage ship, inspects, cleans and inspects the required surface of the outer wall of the oil storage ship, and is detachably attached to the underwater remote controlled carrier. Means for operating an oil storage vessel hull, wherein a sea bottom cleaning member connected by a composite cable with a water absorption hose is operated by a sea bottom cleaning member remote control device to discharge sediment from the sea floor to land. It is to take.

[0006]

Embodiments of the present invention will be described with reference to the drawings. First, a description will be given of a method of performing maintenance without operating an oil storage ship while being installed at an oil storage base. In order to perform the maintenance work without operating the oil storage ship, as shown in FIG. 7, on the land near the oil storage ship, equipment 1 necessary for operating the operation equipment for performing the operation is installed. This land operation equipment 1
Is a power supply, power supply and distribution control equipment 2, a transport trolley, and a remote control device for each member for inspection (hereinafter simply referred to as a land remote control device).
3. Sea bottom cleaning member remote control device 4 and means for removing and storing sediment on the sea bottom.

On the seabed, an underwater remote control carrier 5 of various inspection members is installed so as to be able to run, and is connected to the land operation equipment 1 on land 13 by a composite cable 6 so that it can be remotely operated underwater. On the underwater remote control carriage 5, a member including a visual inspection underwater television (hereinafter abbreviated as TV) member 7, a hull cleaning brush member 8, and a nondestructive inspection member 9 which can be moved to the operation position is mounted. The remote control moving body 10 mounted with the respective members for inspection as described above is detachably attached, and the seabed cleaning member 11 is detachably attached to the underwater remote operation carriage 5 with a composite cable with a water absorbing hose attached detachably. Attach to As described above, by connecting the land operating equipment 1 and the underwater remote-controlled transport vehicle 5 on the sea floor by the composite cable 6, the oil storage ship 12
, The underwater remote-controlled carriage 5 can be moved directly below the oil storage boat 12 by the land operation equipment 1 near the oil storage base, and each of the inspection vehicles mounted on the underwater remote-controlled carriage 5 Component mounted remote control mobile 1
By operating the button 0, the part to be visually inspected can be visually inspected with the underwater TV member 7, and shells attached to the hull part required by this inspection are cleaned by rotating the hull cleaning brush member 8. Further, the corrosion state of the steel plate of the hull can be inspected by the nondestructive inspection member 9, and if necessary, repair can be performed using a repair dry chamber or the like that is separately prepared. The sea bottom cleaning member 11 is attached to the base, and the sea bottom cleaning member remote control device 4 in the land operating equipment 1 can treat the deposits to be removed that have been deposited on the sea floor.

[0008]

Next, an embodiment of a method for performing a maintenance operation without operating the oil storage boat 12 will be described. FIG.
In the above, the land operation equipment 1 is generally movably installed on the land 13 near the oil storage boat 12. The land room equipment 1 has a generator room 1 with a built-in generator as a power source.
A power supply / distribution facility 15 is provided adjacent thereto, and a land-based remote control device 3 and a sea bottom cleaning member remote control device 4 are provided in the control room 16. A winch 17 for a composite cable is provided at the center, and performs the action of winding and rewinding the composite cable 6 as the underwater remote-controlled carriage 5 moves. Winch 17 for composite cable
A winch 19 of a lifting wire 18 for raising and lowering an inspection member or the like from the sea is provided in front of the sea surface cleaning member remote operation device 4 as shown in FIG.
As a result, the take-up reel 21 of the water absorption hose 20 and the drainage pump 23 driven by the drainage motor 22 operate, and the drainage pipe 24
From the wastewater is stored in the sediment storage basket 25.
On the land operating equipment 1, in addition, a swing lever 27 provided in parallel with the composite cable 6 and the water-absorbing hose 20 so that the composite cable 6 and the water-absorbing hose 20 hang vertically from a guide member 26 installed on the sea floor. The lower end portions 29 and 30 of the composite cable 6 are provided with a guide pulley 33 and a guide cam 34 for the composite cable 6 at the upper end portions 31 and 32 thereof.
5, the upper part of the composite cable 6 is moved, and when the installation position of the guide member 26 is moved, the composite cable 6 can be accurately guided. The water-absorbing hose 20 is attached along the composite cable 6 and unnecessary. Sometimes it can be removed. FIG. 1 shows a crawler-type underwater remote-controlled carriage 5 on which a remote-controlled moving body 10 mounted with each member for inspection is mounted. The state which approached the bottom part 12a of the ship 12 is shown. 36, 36a
Is an oil fence.

In FIG. 2, a funnel is provided at the right end of the underwater remote control carriage 5 so that a cylinder 37 containing electric equipment for remote control, a hydraulic device 38 and a composite cable 6 can be taken out without bending in a 360 ° direction. A shaped ring 39 is provided, on the left of which is a mounting base 40. On this mounting table 40, the remote control movable body 1 mounted with each member for inspection
At the right end of the mounting base 40, a winding drum 41 of the composite cable 6 is provided, and on the left side thereof, a visual inspection underwater TV member 7, a hull cleaning brush member 8, a non-destructive inspection member 9
Is provided with a fitting recess 42. In this fitting concave portion 42, a vertical propulsion device 44, a front-rear direction propulsion device 45, and a left-right propulsion device 46 are attached to a horizontally wide U-shaped frame member 43. The composite cable 6 is attached to the lower right part of the frame member 43, and the underwater TV member 7, the hull cleaning brush member 8, the non-destructive underwater TV member 7, and the visual inspection for inspection, cleaning, and inspection are provided in the space 47 at the center. A U-shaped machine frame 48 capable of accommodating the inspection member 9 is detachably fitted therein, and the visual inspection underwater TV member 7 is detachably mounted in the U-shaped machine frame 48.

In FIG. 3, a cleaning brush 4 is provided by providing a propeller 50 shaft below the cleaning brush 49 on the U-shaped machine frame 48.
A hull cleaning brush member 8 for rotating the cleaning brush 9 is attached, and is pressed against the bottom 12a of the oil storage boat 12 via the underwater remote control carriage 5 by the land remote control device 3, and the cleaning brush 49 is rotated. Then, the shells attached to the bottom portion 12a are scraped off, and at the same time, the water flow is blown up by the propeller 50 to clean the bottom portion 12a.

In FIG. 4, a non-destructive inspection member 9 is attached to the U-shaped machine frame 48, and the entire surface of the oil storage boat 12 is covered by the land-based remote control device 3 via the underwater remote control carrier 5. It can be operated to inspect the corrosion state of the steel plate. In addition, depending on the corrosion state found in this inspection, it can be easily repaired using a separate dry chamber for repair or the like.

FIG. 5 shows a state in which the sea bottom cleaning member 11 is mounted on a mounting table 40 of the underwater remote-controlled carriage 5.
2, an internal cleaning pipe 54 having a suction port 53 in front of it is connected by a hydraulic piston 56 so as to be able to enter and exit the external cleaning pipe 55, and an intermediate portion of the hydraulic piston 56 is pivotally connected 57 to the external cleaning pipe 55. The two ends of the hydraulic piston 59 are pivotally connected between the rear part of the outer cleaning pipe 55 and the rear projection part 58 of the external cleaning pipe 55.
In addition, the cleaning pipes 54 and 55 can be appropriately tilted, and the position of the suction port 53 is moved up and down by the land-based sea bottom cleaning member remote control device 4 in accordance with the unevenness of the sea bottom and the amount of scraped shellfish. By moving it back and forth, sediments on the sea floor can be treated effectively. At this time, the suction port 5
The sediment such as shellfish sucked together with the seawater from 3 enters the sediment storage basket 25 from the drainage pipe 24 of the sea bottom cleaning member remote control device 4 provided on land by the water absorbing hose 20 connected to the end of the external cleaning pipe 55. Only the shells that are discharged (see FIG. 6) can be treated.

[0013]

According to the present invention, a regular inspection of a conventional oil storage vessel requires a very large dock, and it takes enormous costs to enter a dock at a long distance, and a large number of connected oil storage vessels. In order to separate and dock only one ship, there is a disadvantage that it takes time to remove the cargo handling equipment and the oil fence, but the invention of claim 1 uses the land operation equipment to remotely control the underwater remote operation carrier. By moving it directly below the oil storage ship and operating the machine frame with a simple structure from the underwater remote controlled carriage directly below this oil storage ship and moving it in any direction,
Visual inspection of hull inspection points Underwater TV members, hull cleaning brush members, non-destructive inspection members can be easily accessed, and all inspections required for periodic inspections can be performed without operating an oil storage boat. As a result, the cost required for periodic inspections can be significantly reduced, and the maintenance of the hull of the oil storage vessel is extremely easy. The operation can be performed with a device that is more compact than the work content.

According to the second aspect of the present invention, in addition to the same effect as the first aspect of the present invention, the seabed cleaning member is operated by a remote control device for the seabed cleaning member in the onshore operation equipment, so that the seabed cleaning member is operated. Sediments that need to be removed can be discharged from the sea floor to land, eliminating the need for labor for cleaning, and causing no human damage even if work is hindered. .

[Brief description of the drawings]

FIG. 1 is a front view showing one embodiment of the present invention, showing land facilities and a part of an underwater apparatus.

FIG. 2 is an enlarged front view of a visually inspectable underwater TV member connected to a remote control moving object mounted with each member for inspection, which is also attached to the underwater remote control carriage.

FIG. 3 is an enlarged front view of the hull cleaning brush member.

FIG. 4 is an enlarged front view of the nondestructive inspection member.

FIG. 5 is an enlarged front view of a sea bottom cleaning member connected to the underwater remote-controlled carriage.

FIG. 6 is an enlarged front view of a cleaning / removal object processing part of the onshore facility.

FIG. 7 is an explanatory diagram of the operation system of the land operation equipment equipment, the inspection member, and the cleaning member.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Land operation equipment equipment 2 Power supply, power supply and distribution control equipment 3 Carriage truck and each member remote control device for inspection (land remote control device) 4 Sea bottom cleaning member remote control device 5 Underwater remote control carriage 6 Composite cable 7 Visual inspection underwater TV member 8 Hull cleaning brush member 9 Non-destructive inspection member 10 Remotely controlled moving body mounted with each member for inspection 11 Sea bottom cleaning member 12 Oil storage boat 13 Land 20 Water absorption hose 24 Drain pipe 25 Sediment storage basket 44 Propeller 45 Propeller 46 propulsion unit 47 space 48 aircraft frame

Claims (2)

[Claims] 1. On land (13) close to an oil storage vessel (12)
, A terrestrial operating equipment (1) composed of a transport trolley and a remote control device (3) for each member for inspection is installed, and a composite cable with a water absorbing hose (20) is provided between the terrestrial operating equipment and the (1). The underwater remote-operated transport vehicle (5) connected in (6) is moved to a position directly below the bottom of the oil storage boat (12) by the transport vehicle and the remote control device for each member for inspection (3), and the underwater remote operation is performed. The composite cable (6) connects between the transport trolley (5) and a machine frame (48) mounted on the underwater remote-controlled transport trolley (5) and movable in the sea in any direction. ), The inspection, cleaning and inspection members (7), (8), and (9), which are exchangeably housed, are separately mounted, and are transported from the underwater remote-controlled carriage (5) to the oil storage boat (12). Surfaced oil storage boat (12)
For maintenance of the hull of an oil storage ship that inspects, cleans and inspects the required surface of the outer wall of the ship. 2. On land (13) close to an oil storage vessel (12).
And a land operation equipment (1) consisting of a transport trolley, a remote control device (3) for each member for inspection, and a remote control device (4) for a sea bottom cleaning member, is installed in the underwater remote control transport trolley (5).
Water absorption hose (20) between the equipment and land operation equipment (1)
The underwater remote-operated transport vehicle (5) is moved to a position directly below the bottom of the oil storage boat (12) by the transport vehicle and each member remote control device for inspection (3). A composite cable (6) connects between a machine frame (48) mounted on the underwater remote operation carrier (5) and movable in the sea in any direction and the underwater remote operation carrier (5). (48) The members for inspection, cleaning and inspection (7), (8) and (9) are exchangeably accommodated and floated from the underwater remote-controlled carrier (5) toward the oil storage boat (12). Inspection of the required surface of the outer wall of the oil storage vessel (12),
The sea bottom cleaning member (11), which is cleaned and inspected and connected by a composite cable (6) with a water-absorbing hose detachably attached to the underwater remote control carriage (5), remotely controls the sea bottom cleaning member. A method for maintaining a hull of an oil storage ship operated by the device (4) to discharge sediment from the seabed to land.