KR20090116292A - Method of shipbuilding for cargo tank at block stage include tank coating - Google Patents

Abstract

PURPOSE: A procedure of a ship building method including a painting process of a cargo tank block is provided to effectually shorten a total building period of crude/product oil tanker ships. CONSTITUTION: A cargo tank block is completely formed in a preceding step(S100). The inspection of the cargo tank block, an air test, and a surface process is performed(S200). The inside painting of the cargo tank block is performed(S300). The cargo tank block is moved to a dock using a horizontal transporting device(S400). The cargo tank block is mounted and launched within the dock(S500).

Description

Shipbuilding process including prioritization and painting process of cargo tank block {METHOD OF SHIPBUILDING FOR CARGO TANK AT BLOCK STAGE INCLUDE TANK COATING}

The present invention relates to a construction method of a CRUDE / PRODUCT OIL TANKER vessel.

In drying the hull, a large number of steel sheets, section steels, and the like are processed, and individual parts are first manufactured, and a part of the hull is enlarged by small and medium assembly on the assembly plate. Subsequently, these parts are arranged and combined on a lined assembly plate to produce a block. The manufactured block is completed by painting work and total assembly around the final dock, that is, after the block and block joining work, the large block is mounted and combined to complete the hull.

On the other hand, the purpose of the block drying method is to divide the hull on the assembly plate on the ground to reduce the amount of work in the dock as much as possible, ① to shorten the working period in the dock, ② to manage the process and work technology It is easy to supervise, ③ It is easy to arrange the appropriate worker, ④ It improves the work environment by improving the working environment, and it is easy to mechanize and automate. ⑤ It can reduce the risk of high place work. ⑥ It reduces the welding deformation and residual stress because of less spot welding. ⑦ It can reduce the painting work on the dock because of block painting.

Blocks are classified into various types according to their size and structure, but are divided into flat blocks and music blocks. In general, a block may be generally considered to be planarly formed by a plate, a girder, a stiffener, or the like. The assembly (large assembly) process consists of arranging plates on a surface plate, arranging girders and stiffeners on it, and performing welding by completing one block. It is called as a contrast process. In recent years, construction of equipments and various tests have also been advanced and carried out on assembly tables.

The weight of the block is increasing with the increase of facilities and the improvement of production technology. In large tankers, 200 ~ 300 tons is common. Depending on the size of the facility, some may exceed 400-500 tons, and the method of drying the super-large block (800 tons) by the total assembly (P.E) process next to the dock is also common.

The ship to be constructed is divided into appropriately shaped blocks in consideration of the facilities and equipments possessed in the design stage and ease of operation, and these blocks are completed and moved to the dock through the processing and assembly process of the members. The mounting process refers to the process of building the shape of the ship by stacking the blocks completed through the assembly process in the dock one by one in a certain order. As the capacity of the crane increases, the divided blocks become larger and carry out design work together with the mounting work, or a part of the so-called preliminary design work as part of the hull construction work. Is gradually increasing.

Meanwhile, a general CRUDE / PRODUCT OIL TANKER vessel is also manufactured according to a construction method in which each block constituting the hull, such as a plurality of CARGO TANK blocks, a bow and a stern block, is manufactured on land and moved to a dock. In this case, after the ships are built with the blocks mounted in the dock, the ship is launched and then the INSPECTION, AIR TEST, surface treatment and painting processes for the CARGO TANK area are carried out on the inner wall. Inevitably lengthening the length of the quay, there is a problem that increases the risk or cost of work (see Figure 2).

The present invention was devised to solve the problem of excessive overhanging air when building a conventional CRUDE / PRODUCT OIL TANKER vessel, so that some or all of the CARGO TANK zone, which is the center of the vessel, forms a completely independent CARGO TANK block. The dry and thus formed CARGO TANK blocks are not only subjected to INSPECTION, AIR TEST and surface treatment at an early stage, but also to the painting process at an early stage to effectively reduce the quay wall air that influences the total dry air of the CRUDE / PRODUCT OIL TANKER vessel. It is an object to provide a drying method that allows.

Other objects and advantages of the present invention will be described below, which are not limited to the matters set forth in the claims and the disclosure of the embodiments thereof, but also to the broader ranges by means and combinations within the range readily recited therefrom. Add that it will be included.

In order to achieve the above object, the present invention, the 100th step to form a complete CARGO TANK block in the preceding step; A 200 step of performing AIR TEST of the CARGO TANK block; Step 300 for performing internal painting of the CARGO TANK block; Step 400 of transferring the CARGO TANK block to the dock by using a horizontal transfer device; And it proposes a ship drying method comprising the prior art and painting process of the cargo tank block, characterized in that to reduce the quay air through the process of the 500 step of loading the CARGO TANK block in the dock and launching it.

According to the present invention, it is possible to effectively shorten the quay air, which influences the total drying air of the CRUDE / PRODUCT OIL TANKER vessel.

Other effects of the present invention, as well as those described in the above-described embodiments and claims of the present invention, as well as potential effects that may occur within the range that can be easily estimated therefrom and potential advantages that contribute to industrial development It will be added that it will be covered by a wider scope.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the following will describe a preferred embodiment of the present invention, but the technical idea of the present invention is not limited thereto and may be variously modified and modified by those skilled in the art.

In the present invention, when constructing a CRUDE / PRODUCT OIL TANKER vessel, the CARGO TANK (cargo tank) block of some or all completely formed in the preceding step to perform the INSPECTION, AIR TEST, surface treatment and coating process, and Cargo tank block, which has been completed and the center, bow and stern block of the remaining vessels, which are not completely formed in the preceding stage, are mounted and launched in the dock to reduce the wall air effectively by completing the painting process for the remaining car tank during the quay period. It is to be made (see Fig. 3).

The present invention devised to achieve this object, the 100th step to form a complete CARGO TANK block in the preceding step; A 200th step of performing INSPECTION, AIR TEST and surface treatment of the CARGO TANK block; Step 300 for performing internal painting of the CARGO TANK block; Step 400 of transferring the CARGO TANK block to the dock by using a horizontal transfer device; And a 500th step of launching the CARGO TANK block in the dock and launching it.

The 100th step relates to a process of completely forming the CARGO TANK block in the preceding step (S300 of FIG. 3). Here, 'to form a CARGO TANK block perfectly' means that the front, rear, left and right of the CARGO TANK block is blocked by the partition wall and outer plate to form a closed space.

At this time, the CARGO TANK block formed completely in this step may be part or all of the CARGO TANK interval.

In Figure 1 it can be seen an example of mounting a large number of large blocks and CARGO TANK blocks (GBA, GBD) that are perfectly formed in the preceding step, the present invention with respect to such a perfectly formed CARGO TANK blocks (GBA, GBD) After performing AIR TEST and painting process, these blocks (GBA, GBD) and the remaining CARGO TANK blocks (GBB, GBC), stern block (GBH) and bow block (GBE) are loaded and launched to carry out the remaining painting process. Finishing effectively shortens the quay air.

The 200th step relates to a process of performing INSPECTION, AIR TEST and surface treatment of the CARGO TANK block perfectly formed in the 100th step (S400 and S500 of FIG. 3).

In this case, in the case of AIR TEST, the conventional AIR TEST was performed during the quay wall period, but the pressure was applied to the WATER BALLAST TANK portion to check whether air leaked from inside the CARGO TANK (such as a soap bubble test), but the present invention was performed. In this case, since the WATER BALLAST TANK of the CARGO TANK block is not perfectly formed, it is impossible to apply pressure to the WATER BALLAST TANK part. Done.

Step 300 relates to a process of performing the internal coating of the CARGO TANK block perfectly formed in the 100th step, in this step is to follow the usual coating process applied to the hull block as it is (S600 and S700 of Figure 3).

The 400th step relates to a process of transferring the CARGO TANK block, which has undergone the INSPECTION, AIR TEST, surface treatment of the 200th step and the internal coating of the 300th step, to the dock using a horizontal transfer device (S800 of FIG. 3).

In this step, the CARGO TANK block is stably transferred to the dock using horizontal transport equipment such as transporter, module transporter, truck and gripper jack, truck and winch, and the number of horizontal transport equipment according to the weight of the CARGO TANK block. It is desirable to minimize the deformation or stress caused by the weight of the CARGO TANK block and the damage of the coated film by appropriately adjusting the.

The 500th step relates to a process of launching the CARGO TANK block in the dock and launching it (S800 of FIG. 3).

In this step, not only the CARGO TANK block perfectly formed in the 100th step but also the remaining CARGO TANK block, the bow block, and the stern block, which are not completely formed in the 100th step, are loaded and launched. By completing the coating process, it is possible to effectively reduce the quay air.

The above description is merely illustrative of the technical idea of the present invention, and various modifications, changes, and substitutions may be made by those skilled in the art without departing from the essential characteristics of the present invention. will be. Accordingly, the embodiments disclosed in the present invention and the accompanying drawings are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by the embodiments and the accompanying drawings. . The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

1 is a view showing the early formation of CARGO TANK block when applying the drying method according to the present invention.

Figure 2 is a view showing the drying process flow of the conventional CRUDE / PRODUCT OIL TANKER ship.

3 is a view showing the drying process flow of the CRUDE / PRODUCT OIL TANKER ship according to the present invention.

Claims (4)

In building a CRUDE / PRODUCT OIL TANKER vessel, A 100th step of forming the CARGO TANK block completely in the preceding step; A 200th step of performing INSPECTION, AIR TEST and surface treatment of the CARGO TANK block; Step 300 for performing internal painting of the CARGO TANK block; Step 400 of transferring the CARGO TANK block to the dock by using a horizontal transfer device; And A ship drying method including a cargo tank block prioritization and painting process, wherein the cargo tank block is shortened through a 500th step of launching the CARGO TANK block in a dock and launching it. The method of claim 1, The 100 step, Ship construction method comprising the prior art and painting process of the cargo tank block, characterized in that to completely form a CARGO TANK block corresponding to part or all of the CARGO TANK section. The method of claim 1, The 200 step, The shipbuilding method including the preceding step and the painting process of the cargo tank block, characterized in that the pressure in the CARGO TANK and on the contrary check the watertightness in the WATER BALLAST TANK. The method of claim 1, The 300 step, Cargo tank construction method comprising the preceding step and the painting process of the cargo tank block, characterized in that the coating in the preceding step.

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