KR20190018980A - Rescuing method using equipment mounted on ship or marine structure - Google Patents

Abstract

The present invention relates to a rescuing method using equipment mounted on a ship or a marine structure, which maximizes efficiency of rescuing work without special prevention and reduces working time and cost through steps of dividing the flooded ship or marine structure into a plurality of watertight areas, draining seawater of a flooded area into the watertight area beforehand by using equipment mounted on the flooded ship or marine structure, and then discharging seawater of the watertight area to the outside.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a recovery method using a ship or an apparatus mounted on an offshore structure,

The present invention relates to a rescue method using facilities mounted on a ship or an offshore structure, and more particularly, to a method of rescuing a ship or an offshore structure when the ship or an offshore structure floods and sinks due to an unexpected situation After the flooded ship or the offshore structure is divided into a plurality of watertight areas, the seawater in the flooded area is first drained to the watertight area using the equipment mounted on the flooded ship or the offshore structure, and then the seawater in the watertight area is discharged to the outside To a rescue method using equipment mounted on a ship or an offshore structure that maximizes the efficiency of the rescue operation and saves working time and cost without any special prevention.

In general, ships or offshore structures may become flooded or sunk due to various unforeseen circumstances during construction or operation.

If such inundation and sinking occur in the sea, it is necessary to attach a separate buoyant body to the flooded ship or marine structure in order to obtain buoyancy, or to pour any liquid in the inner tank For example, seawater, etc.) to the outside to obtain buoyancy.

In the case of these conventional methods, the ship or the marine structure is biased to one side by the flow of the internal fluid of the ship or the marine structure during the simple draining operation and floating of the marine vessel or the marine structure, Secondary damage of the ship or offshore structure.

In addition, these conventional methods have a problem in that they involve a lot of costs such as the cost of attaching the buoyant body for propelling the buoyancy to the flooded ship or the offshore structure, the cost incurred in the boring process, etc., .

Accordingly, the present inventor has found that, in order to solve various problems and limitations of the above-mentioned conventional flooding vessel or marine structure, when a ship or an offshore structure is submerged or sunked due to an unexpected situation, In the process of floatation, the flooded ship or the offshore structure is divided into a number of watertight areas, and then the water in the flooded area is firstly drained to the watertight area using the equipment mounted on the flooded ship or offshore structure. In order to maximize the efficiency of the rescue work and to save the working time and cost through the sequential steps of discharging the seawater to the outside, to invent the rescue method using the equipment mounted on the ship or offshore structure It came.

Korean Registered Utility Model No. 20-0196752

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a watercraft or an offshore structure in which a flooded ship or an offshore structure is flooded or sunked by an unexpected situation, The water in the water-immersed area is first drained to the water-tight area using the equipment mounted on the flooded ship or the offshore structure, and then the seawater in the water-tight area is discharged to the outside, To provide a rescue method using equipment installed on a ship or an offshore structure that maximizes the efficiency of the rescue operation and saves working time and cost without the need to prevent it.

A recovery method using a ship or an offshore structure according to an embodiment of the present invention includes a step of selecting and dividing a flooded ship or an offshore structure into a plurality of watertight segregations, Making a watertight area corresponding to a corner of the plurality of watertight areas through a pump mounted on the flooded ship or an offshore structure through a pump mounted on the floatated ship or an offshore structure, Draining the seawater filled in the drying zone to the outside after the drainage to the sinking zone is completed, and discharging the flooded ship or the marine structure And a step of flooding.

In one embodiment, the step of selecting and partitioning the plurality of watertight zones may include selecting a trim and a heel zone for adjusting the trim and heel when the ship is flooded, In the step of selecting and partitioning the trim and heel zones as watertight zones and in the case of flooding the offshore structures, man holes and doors located in the respective watertight zones are opened to minimize the drainage time of the seawater, And removing the boundary within the watertight region of the watertight region.

In one embodiment, the step of draining the seawater of the submerged area into the drying zone may comprise determining the differential head of the seawater generated by opening the valve of the pipeline installed in the submerged vessel or offshore structure, Through the openings of the at least one manhole and the door mounted on the flooded ship or offshore structure, the seawater of the submergence zone to the drying zone, Drainage to the area.

In one embodiment, the flooding of the flooded ship or offshore structure may be accomplished by using an automated ship control system (IAS) mounted on the offshore or floating offshore vessel or offshore structure, And monitoring the drainage status of the seawater drained from the offshore structure.

In one embodiment, flooding the flooded ship or offshore structure further comprises performing a drainage operation of the seawater to the flooded zone using one or more pumps mounted on the flooded ship or offshore structure can do.

In one embodiment, the present invention may further comprise the step of calculating and determining the seabed cohesion formed in the ground at the location where the flooded ship or marine structure is flooded.

In one embodiment, draining the seawater of the submergence zone into the drying zone comprises expelling a pump hose extending from at least one portable pump mounted on the submerged vessel or offshore structure, And the like.

In one embodiment, draining the seawater of the submergence zone into the drying zone includes drilling additional drainage holes in the side portion of the submergence zone to reduce the head difference of the seawater between the submersion zone and the drying zone .

In one embodiment, the invention may further comprise displaying one or more temporary draft marks on the outer side of the flooded ship or offshore structure.

In one embodiment, the present invention pre-calculates the lightweight of the flooded ship or offshore structure, and the step of shipping the light weight of the flooded ship or offshore structure after drainage to the flooded zone is complete, As shown in FIG.

In one embodiment, the present invention may further comprise the step of, in the flooded ship or offshore structure, selecting an additional flooded zone for an area not selected as the plurality of watertight zones.

In one embodiment, the present invention may further comprise the step of determining a position and a settling rate for the immersion zone through an automated maritime control system (IAS) mounted on the immersed vessel or offshore structure.

According to an aspect of the present invention, after a flooded ship or an offshore structure is divided into a plurality of watertight areas, the seawater in the flooded area is firstly drained to the watertight area using the equipment mounted on the flooded ship or the offshore structure, The seawater is discharged to the outside through the sequential steps, thereby maximizing the efficiency of the rescue operation without any special prevention and saving the working time and cost.

FIG. 1 is a flowchart illustrating a method of recovering a ship or an offshore structure according to an embodiment of the present invention in a sequential order.
2 is a view showing a state in which an offshore structure 1 is selected and partitioned into a plurality of watertight areas through a recovery method using equipment installed on a ship or an offshore structure according to an embodiment of the present invention.
3 is a view showing a state in which a ship 2 is selected and divided into a plurality of watertight areas through a recovery method using equipment installed on a ship or an offshore structure according to an embodiment of the present invention.
FIG. 4 is a view showing a state in which seawater in an immersion area is drained to a drying zone through a recovery method using equipment mounted on a ship or an offshore structure according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

FIG. 1 is a flowchart illustrating a method of recovering a ship or an offshore structure according to an embodiment of the present invention in a sequential order.

1, according to an embodiment of the present invention, a recovery method using equipment mounted on a ship or an offshore structure mainly includes a step of selecting and partitioning a flooded ship or an offshore structure into a plurality of watertight segregations (S101), making a watertight area corresponding to a corner of a plurality of watertight areas through a pump mounted on the flooded ship or an offshore structure into a dry space (S102) (S103) draining the seawater in the flooded area located at the center of the flooded ship or the offshore structure to the drying zone (S103), draining the seawater filled in the drying zone to the outside after the drainage to the flooded area is completed And flooding the vessel or offshore structure where drainage is completed (S105).

The step S101 of selecting and dividing a flooded ship or an offshore structure into a plurality of watertight segregations may include adjusting the trim and heel when the ship is flooded, And the heel zone is then selected and partitioned into a watertight zone and a manhole located within each watertight zone for minimizing the drainage time of the seawater when the marine structure is submerged manhole and door to remove the boundary within each watertight area.

Here, the reason why the flooded ship or the offshore structure is selected and partitioned into a plurality of watertight areas is that when the flooded ship or the offshore structure is buoyant and becomes floating state, the internal fluid (e.g., seawater) This is to prevent the secondary damage of the ship or offshore structures due to the unstable behavior of the ship due to the flow of the ship or the offshore structure in the direction of deflection and affecting the behavior of the ship or offshore structure.

This will be described in more detail with reference to FIG. 2 and FIG.

FIG. 2 is a view showing a state in which an offshore structure 1 is selected and divided into a plurality of watertight areas through a recovery method using equipment mounted on a ship or an offshore structure according to an embodiment of the present invention. FIG. 3 is a view showing a state in which a ship 2 is selected and divided into a plurality of watertight areas through a recovery method using equipment mounted on a ship or an offshore structure according to an embodiment of the present invention.

Referring to FIG. 2, a semi-rig 1 is shown in FIG. 2. The marine structure 1 is divided into six large water-tight zones to minimize drainage time of seawater. In this case, a plurality of manholes or doors provided inside the watertight area are opened so that the watertight boundary is removed in one watertight area, so that the seawater in the watertight area flows freely without being trapped. If each watertight area is further subdivided, the drainage time of the rescue operation site becomes longer.

In particular, in FIG. 2, the watertight area corresponding to each corner can be selected as the drying area. In the watertight area corresponding to each corner, the seawater in the flooded area located at the center of the offshore structure (1) And the seawater drained into the drying zone is drained back to the outside through the pump, so that the seawater in the marine structure 1 is drained to the outside, so that the whole center of the marine structure 1 is stably caught.

Referring to FIG. 3, a general ship 2 or a commercial ship is shown in FIG. 3, and the ship 2 is divided into seven large water-tight zones to minimize the drainage time of the seawater. In this case, since the ship 2 may have a trim and a heel when it floats, unlike the offshore structure 1, in order to align the ship 2, 3, 5, After selecting the trim and heel zones corresponding to the six zones, the water-tight zones will be selected. At this time, the number of the selection and the number of the trim and the heel zone or the watertight zone can be changed in consideration of the stability analysis and the drainage plan of the ship 2.

3, a watertight area corresponding to each corner of the ship 2 can be selected as a drying zone. In the watertight area corresponding to each corner, a watertight area corresponding to each corner of the ship 2 The seawater in the submergence area located at the center can be continuously drained and the seawater drained into the drying area can be drained back to the outside through the pump in the future so that the seawater in the ship 2 is drained to the outside, As a result, the longitudinal and transverse yarns of the ship 2 can be stably adjusted when lifted.

Next, in the step S102 of making the watertight area corresponding to the corner of the plurality of watertight areas through the pump mounted on the flooded ship or the offshore structure into a dry space (S102), the watertight area And the drying zone may include a plurality of watertight zones, a zone located at each corner of the offshore structure 1, a corner of the ship 2 or a longitudinal slope and a lateral slope when the ship 2 is lifted It can mean an area located in an area where the slope can be adjusted. Such a drying zone may mean a storage space in which the seawater in the flooding zone located at the center of the marine structure 1 or the vessel 2 is drained and temporarily stored.

Through this step S102, it is possible to secure a space for increasing the drainage efficiency of the seawater in the flooded ship or the offshore structure. In particular, each of the drying zones can be provided to each of the cascades or the longitudinal slopes of the offshore structure 1 or the ship 2, Since it is located in the area where the horizontal inclination can be adjusted, the stability when lifting is increased.

Next, the step of draining the seawater of the submerged area to the drying zone through the pump mounted on the submerged ship or offshore structure (S103) may be performed by using a pipeline (e.g., a ballast line, FO / DO Drainage of the seawater in the submergence zone to the drying zone through the differential head of the seawater generated by opening the valve of the submerged ship or marine structure, And draining the seawater in the submergence zone to the drying zone through the open formed holes.

This will be described in more detail with reference to FIG.

FIG. 4 is a view showing a state in which seawater in an immersion area is drained to a drying zone through a recovery method using equipment mounted on a ship or an offshore structure according to an embodiment of the present invention.

Referring to FIG. 4, in the case of using a pipeline line installed in a flooded ship or an offshore structure, when a pipeline line of a flooded ship or an offshore structure is remotely controllable, the head difference on the pipeline line is used. The seawater of the submergence zone can be drained to the drying zone by the action of the head.

 Alternatively, in the absence of a pipeline, seawater in the submerged area can be drained into the drying zone by partially opening the manhole or door in the submerged area.

Additionally, in one embodiment, a submerged ship or a pump hose extending from one or more portable pumps mounted on an offshore structure may be positioned vertically from the submergence zone, It is possible to place more than one portable pump each in the watertight area located in the areas 2, 3, 5 and 6 in Fig. 3 in consideration of the lateral inclination. Also, in one embodiment, if the water head difference is too large to reduce the efficiency of the pump discharge, additional drain holes may be additionally drilled into the sides of the water immersion area to reduce the water head difference between the water immersion area and the drying area.

Next, the step of draining the seawater filled in the drying zone to the outside (S104) after the drainage to the sink area is completed is performed by using a pump or a portable pump mounted on the flooded ship or the offshore structure, Which may be a process of draining out of the offshore structure and this process may be performed continuously with the step of draining the seawater in the submerged area described above into the drying zone and consequently the seawater in the submerged ship or offshore structure The central stability due to the increase in the buoyancy of the ship or offshore structure is maintained while being continuously discharged.

Next, in the step of flooding the completed ship or the offshore structure (S105), using the IAS installed on the flooded ship or offshore structure, the drainage of the seawater discharged from the flooded ship or the offshore structure Or one or more pumps mounted on a flooded ship or an offshore structure may be used to further drain the seawater to the flooded area. Generally, in the case of ships or marine structures on which tanks with fluids are mounted, most IASs are installed, so that if the IAS of the ship or the marine structure is operated, This information will be used to identify flooding information such as the approximate location of the flooded area and the settling rate.

In addition, when the ship is floated, the ship's automatic control system (IAS) installed on the flooded ship or offshore structure is used to compare the amount of actual drainage and the amount of drainage measured to reduce the error of IAS information and to understand the trend of actual drainage do.

In addition, in the floatation operation, the drainage amount of the pump mounted on the flooded ship or offshore structure is adjusted in consideration of the external environmental conditions of the floatation work site.

In addition, in one embodiment, additional one or more temporary draft marks may be displayed on the outer side of the flooded ship or offshore structure to indicate temporary drafts on the bow or left and right seats so that the operator can ascertain the draft during the lifting can do.

In addition, in one embodiment, further, the submarine cohesive force formed in the ground where the flooded ship or offshore structure is flooded is calculated and judged. It is necessary to judge the adhesion of the seabed so that, when the ship or an ocean structure enters the floating state (when the buoyancy and gravity become equal), the adhesion of the seabed soils may affect the behavior of the ship or the offshore structure Because. For example, in the case of a ground with strong underwater adherence, it is necessary to control the point at which the floating state is established to prevent sudden movement.

Additionally, in one embodiment, the lightweight of the flooded ship or offshore structure is calculated in advance and the light weight of the flooded ship or offshore structure after drainage to the flooded zone is completed is recomputed. For example, the area to be drained is not considered as light weight for rescue, but the seawater entering the area where drainage is impossible is considered as light weight for rescue. In addition, the water tightness of each area can be ensured when the ship or the offshore structure is normally in operation. However, in the case of a flooded ship or an offshore structure, when the manhole or the door is opened, the watertightness is not secured, .

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the following claims. It can be understood that it is possible.

1: Offshore structures
2: Ships

Claims (12)

Selecting and partitioning the flooded ship or offshore structure into a plurality of watertight segregations;
Making a watertight area corresponding to a corner of the plurality of watertight areas through a pump mounted on the flooded ship or an offshore structure into a dry space;
Draining the seawater in the submerged vessel or marine structure through the pump mounted on the submerged vessel or marine structure into the drying zone;
Draining the seawater filled in the drying zone to the outside after drainage to the immersion zone is completed; And
And flooding the flooded ship or the offshore structure to which the drainage has been completed.
The method according to claim 1,
Wherein the step of selecting and partitioning the water-
If the ship is submerged, selecting a trim and heel zone to adjust the trim and heel during floatation, then selecting and partitioning the trim and heel zone into a watertight zone; And
Opening the man holes and doors located in the respective watertight areas to minimize the drainage time of the seawater when the offshore structure is submerged, Characterized by the use of facilities mounted on a ship or an offshore structure.
The method according to claim 1,
The step of draining the seawater of the immersion zone into the drying zone comprises:
Draining the seawater of the submergence zone into the drying zone through a differential head of seawater generated by opening a valve of a pipeline line mounted on the submerged ship or an offshore structure; And
And draining the seawater of the submergence zone to the drying zone through a hole formed by opening one or more manholes and doors mounted on the submerged ship or offshore structure, Rescue method using equipment installed on the structure.
The method according to claim 1,
Flooding the flooded ship or offshore structure comprises:
Monitoring the drainage state of seawater drained from the flooded ship or offshore structure using an automatic ship control system (IAS) mounted on a ship or an offshore structure that floats the flooded ship or offshore structure; Wherein the method comprises the steps of:
The method according to claim 1,
Flooding the flooded ship or offshore structure comprises:
And further performing a drainage operation of the seawater to the water immersion area by using at least one pump mounted on the flooded ship or an offshore structure, using the equipment mounted on the ship or an offshore structure How to save.
The method according to claim 1,
And calculating and determining the seabed adhesion force formed on the ground at the position where the flooded ship or the marine structure is flooded, using the equipment installed on the ship or an offshore structure.
The method according to claim 1,
The step of draining the seawater of the immersion zone into the drying zone comprises:
And placing the pump hose vertically from the water immersion area, the pump hose extending from at least one portable pump mounted on the flooded ship or offshore structure. ≪ RTI ID = 0.0 > The rescue method using equipment.
The method according to claim 1,
The step of draining the seawater of the immersion zone into the drying zone comprises:
And drilling an additional drain hole in a side portion of the water immersion area to reduce the water head difference between the water immersion area and the drying area.
The method according to claim 1,
And displaying one or more temporary draft marks on the outer side of the flooded ship or offshore structure. ≪ Desc / Clms Page number 13 >
The method according to claim 1,
Calculating a lightweight of the flooded ship or an offshore structure and delivering the light weight of the flooded ship or offshore structure after drainage to the flooded zone is completed; A rescue method using equipment mounted on a ship or an offshore structure.
The method according to claim 1,
Further comprising the step of selecting, in the flooded ship or offshore structure, an additional flooding zone for an area not selected as the plurality of watertight zones. Way.
The method according to claim 1,
Further comprising the step of determining a position and a sink amount of the water immersion area through an automatic ship control system (IAS) mounted on the flooded ship or an offshore structure, .

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