CN111232154A - One-time hoisting, positioning and mounting process for liquefied gas carrier liquid cargo unit - Google Patents
One-time hoisting, positioning and mounting process for liquefied gas carrier liquid cargo unit Download PDFInfo
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- CN111232154A CN111232154A CN202010149610.3A CN202010149610A CN111232154A CN 111232154 A CN111232154 A CN 111232154A CN 202010149610 A CN202010149610 A CN 202010149610A CN 111232154 A CN111232154 A CN 111232154A
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Abstract
The invention provides a one-time hoisting, positioning and mounting process for a liquid cargo unit of a liquefied gas carrier, which is characterized in that horizontal data of deck base plates are collected through a high-precision total station, one point of the horizontal data is selected as a reference point to analyze and calculate the horizontal height difference condition of each deck base plate, the position of a margin line of a lower opening of a liquid cargo unit support is calculated according to the pin height of the liquid cargo unit support, the margin of the lower opening of the liquid cargo unit support is repaired and cut before the liquid cargo unit support is hoisted and positioned, and the hoisting and positioning work of the liquid cargo unit is ensured to be completed once after. According to the invention, the lower opening allowance of the liquid cargo unit support is advanced to the position before the liquid cargo unit is hoisted and positioned, so that the hoisting and positioning time of the liquid cargo unit is greatly shortened, the installation and positioning efficiency of the liquid cargo unit of the liquefied gas carrier is improved, the waste of gantry crane resources is reduced, and the dock period of the liquefied gas carrier is reduced to a certain extent.
Description
Technical Field
The invention belongs to the field of liquefied gas ship liquid cargo systems, and particularly relates to a one-time hoisting, positioning and mounting process for a liquefied gas ship liquid cargo unit.
Background
The liquid cargo system is used as a core part of the liquefied gas carrier, the liquid cargo system is divided into a plurality of units to be independently built (pipes, supports, cable brackets and the like are made into a plurality of integral units) in the construction process of the liquefied gas carrier, and the liquid cargo units are hoisted to be connected with each other on the ship after the main deck of the ship is carried and formed. The liquefied gas carrier liquid cargo unit is limited to the level of hull deck and the influence of factors such as liquid cargo unit support manufacturing process deformation in the design process, and the design stage is added at the end opening of unit support and is put 50mm surplus so that repair and cut after the liquid cargo unit support is hoisted and loaded on the ship, thereby guaranteeing that the support end opening and the deck backing plate interval meet the welding requirement.
The existing liquid cargo unit hoisting and positioning process needs to perform first positioning after a liquid cargo unit is hoisted and loaded onto a ship, a gantry crane waits in situ after positioning is completed, field personnel mark out a lower opening allowance line and a trimming allowance of a unit support according to the actual horizontal condition of a deck base plate, the gantry crane hoists the liquid cargo unit pipe support again for secondary positioning after the allowance trimming is completed, and installation and positioning work of one unit is completed after the secondary positioning is completed.
The installation and positioning processes of the liquid cargo units need two times of positioning, and in the processes of marking out and cutting the allowance of the liquid cargo unit bracket, the dock gantry crane resources are always in an occupied state, so that the waste of the dock hoisting resources is large;
the method is characterized in that the method is 2015106536553, the patent name is a construction method of no-allowance butt joint of a liquefied gas carrier unit, and the method discloses a construction method of a unit pipe frame, and the method comprises the specific operation steps of preparation before manufacturing of the unit pipe frame, reverse manufacturing, turning over, fitting-out installation, unit pipe frame hoisting and folding, but after the unit pipe frame is hoisted and loaded onto a ship, the balance at the bottom of a support column is cut off by performing laser or stay wire inspection on each horizontal plane of the pipe frame, so that the workload on the ship is increased, meanwhile, the method is limited by the small field operation space and the crossed field environment of various operations, the balance repair and cut work efficiency is relatively low, the risk factor is more, and the dock cycle of the liquefied gas carrier is influenced; secondly, the field operation personnel independently repair and cut allowance according to the horizontal condition of a deck base plate of a single liquid cargo unit support, only the height difference of adjacent units is required, the consideration on the overall level of the liquid cargo system is lacked, the overall level condition of the folded units is influenced, and further the construction quality of the liquid cargo system is influenced.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention is designed to provide a one-time hoisting, positioning and installing process for a liquefied gas carrier liquid cargo unit, so as to improve the installation accuracy and the installation positioning efficiency of the liquid cargo unit and reduce the operation difficulty.
In order to achieve the above objects and other related objects, the present invention provides a one-time hoisting positioning installation process for a liquefied gas carrier liquid cargo unit, comprising the steps of:
1) deck section building stage: checking the installation positions of the deck base plates according to the drawn deck base plate installation position checking list, wherein the deck base plate installation position checking list is determined by theoretical dimensions of ship design modeling, and if the installation positions of the deck base plates do not accord with the deck base plate installation position checking list, corresponding personnel are informed to carry out field correction until the installation positions of all the deck base plates accord with the requirements of the deck base plate installation position checking list and welding is carried out;
2) liquid cargo unit support manufacturing and turning over: the method comprises the steps that a) the levelness and the datum line precision of a liquid cargo unit support manufacturing platform are detected and adjusted through a total station, and the datum line comprises a center line, a rib bit line and a positioning point; b) in the manufacturing process of the liquid cargo unit support, detecting and adjusting the levelness of the upper surface of the liquid cargo unit support and the verticality of pins of the liquid cargo unit support through a total station to ensure that the upper surface of the liquid cargo unit support is positioned on the same horizontal plane; c) detecting and adjusting the levelness and the datum line precision of a liquid cargo unit support turnover platform through a total station in the turnover process of the liquid cargo unit support, wherein the datum line comprises a center line, a rib bit line and a positioning point; d) after the liquid cargo unit support is turned over and fixed, detecting and adjusting the upper surface of the liquid cargo unit support to be positioned on the same horizontal plane through a total station, detecting the opening size of a pin of the liquid cargo unit support, and adjusting the opening size of the pin of the liquid cargo unit support and a reinforcing member of the liquid cargo unit support to be consistent with a drawing;
3) deck horizontal measurement and margin calculation: after deck section carrying and installation are completed, measuring and recording horizontal data of deck base plates by using a total station, selecting a point in a better area of the horizontal data of the deck base plates as a reference point to analyze the horizontal height data of each deck base plate, and calculating and recording residual quantity values of corresponding liquid cargo unit support pins based on the horizontal height data and the corresponding liquid cargo unit support pin heights to form a liquid cargo unit support pin residual quantity table;
4) liquid cargo unit support pin end opening surplus marking off and cutting stage: drawing out a liquid cargo unit support pin allowance line by using a total station instrument in an auxiliary way according to the liquid cargo unit support pin allowance table obtained in the step 3), performing two-dimensional retesting, and repairing and cutting the lower opening allowance of the liquid cargo unit support pin according to the liquid cargo unit support pin allowance line after the retesting is correct;
5) after the liquid cargo units are hoisted and loaded onto the ship, the central lines and the rib position lines of the liquid cargo units are respectively aligned with the central lines and the rib position lines of the ship body, the installation and positioning work of the liquid cargo units is completed at one time, and the alignment conditions of the deck base plate and the corresponding pins of the liquid cargo unit support are counted and adjusted.
According to the method, all the horizontal data of the deck base plates are collected, one point is selected from an area with better horizontal data to be used as a reference point to analyze the horizontal height data of each deck base plate, and the allowance value of the corresponding liquid cargo unit support pin is calculated and recorded based on the horizontal height data and the corresponding liquid cargo unit support pin height, so that the upper surfaces of the lifted liquid cargo unit supports are all in the same horizontal plane, and the installation precision of the whole liquid cargo unit is improved; and secondly, the allowance of the lower opening of the pin of the liquid cargo unit bracket is repaired and cut before the liquid cargo unit is hoisted and loaded onto the ship, so that the hoisting and positioning time of the liquid cargo unit is shortened to a great extent, the installation and positioning efficiency of the liquid cargo unit of the liquefied gas carrier is improved, the resource waste of a gantry crane is reduced, and the dock period of the liquefied gas carrier is reduced to a certain extent.
Specifically, the installation position of the deck base plate in the step 1) is checked by using a two-dimensional tape measure or a total station, so that a worker can select the installation position according to the actual situation.
Specifically, the method for measuring the horizontal data of the deck plate in the step 3) is to measure the horizontal data of the deck plate corresponding to all the liquid cargo unit supports at one time or measure the horizontal data of the deck plate corresponding to each liquid cargo unit support individually, so that a worker can select the data according to actual conditions.
Specifically, the two-dimensional retesting in the step 4) adopts a tape measure, a level meter or a total station, so that the staff can select the two-dimensional retest according to the actual situation.
Specifically, the allowance of the lower opening of the liquid cargo unit bracket pin in the step 4) is cut by adopting flame cutting or a cutting machine, so that the working personnel can select the allowance according to the actual situation.
As described above, the one-time hoisting, positioning and mounting process for the liquefied gas carrier liquid cargo unit has the following beneficial effects:
according to the one-time hoisting, positioning and mounting process for the liquid cargo units of the liquefied gas carrier, all deck base plate horizontal data are collected, one point is selected from a region with better horizontal data as a reference point to analyze the horizontal height data of each deck base plate, and the allowance values of the corresponding liquid cargo unit support pins are calculated and recorded based on the horizontal height data and the corresponding liquid cargo unit support pin heights, so that the upper surfaces of the hoisted liquid cargo unit supports are positioned on the same horizontal plane, and the mounting precision of the whole liquid cargo unit is improved; and secondly, the allowance of the lower opening of the liquid cargo unit support is repaired and cut before the liquid cargo units are hoisted and loaded on the ship, so that the hoisting and positioning time of the liquid cargo units is shortened to a great extent, the installation and positioning efficiency of the liquid cargo units of the liquefied gas carrier is improved, the resource waste of a gantry crane is reduced, and the dock period of the liquefied gas carrier is reduced to a certain extent.
Drawings
Fig. 1 is a schematic view of the butt joint of a liquid cargo unit bracket and a deck plate.
Fig. 2 is a partially enlarged view of a in fig. 1.
Description of the reference numerals
The liquid cargo unit support comprises a liquid cargo unit support 1, a liquid cargo unit pipe system 2, a liquid cargo unit pipe system support 3, liquid cargo unit support pins 4, a deck 5, a deck base plate 6, a deck reverse side T-shaped structure 7 and liquid cargo unit support pin allowance lines 8.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1-2. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1 to 2, the one-time hoisting, positioning and mounting process for the liquefied gas carrier liquid cargo unit bracket of the invention comprises the following steps:
1) deck section building stage: according to the drawn deck base plate installation position inspection list, a two-dimensional tape measure or a total station is adopted to inspect the installation position of the deck base plate 6, the deck base plate installation position inspection list is determined by the theoretical size of ship design modeling, if the installation position of the deck base plate 6 does not accord with the deck base plate installation position inspection list, corresponding personnel are informed to carry out field correction until the installation positions of all the deck base plates 6 accord with the requirements of the deck base plate installation position inspection list and welding is carried out;
2) liquid cargo unit support manufacturing and turning over: the method comprises the steps that a) the levelness and the datum line precision of a unit support manufacturing platform are detected and adjusted through a total station, and the datum line comprises a center line, a rib bit line and a positioning point; b) in the manufacturing process of the liquid cargo unit bracket, detecting and adjusting the levelness of the upper surface of the liquid cargo unit bracket 1 and the verticality of a pin 4 of the liquid cargo unit bracket through a total station instrument to ensure that the upper surfaces of the liquid cargo unit bracket 1 are positioned on the same horizontal plane; c) in the process of turning over the liquid cargo unit support 1, detecting and adjusting the levelness and the datum line precision of a unit support turning-over platform through a total station, wherein the datum line comprises a central line, a rib bit line and a positioning point; 4) after the liquid cargo unit support 1 is turned over and fixed, detecting and adjusting that the upper surface of the liquid cargo unit support 1 is positioned on the same horizontal plane through a total station, detecting and adjusting the opening size of a liquid cargo unit support pin 4, and adjusting the opening size of the liquid cargo unit support pin 4 and each reinforcing member of the liquid cargo unit support 1 to be consistent with a drawing, wherein in the embodiment, the opening size of the liquid cargo unit support pin 4 refers to the distance between adjacent liquid cargo unit support pins 4;
3) deck horizontal measurement and margin calculation: after the deck 5 is installed in a segmented carrying mode, the total station is used for measuring and recording the horizontal data of the deck base plates 6, in the embodiment, the horizontal data measuring method of the deck base plates 6 is used for measuring the horizontal data of the deck base plates 6 corresponding to all the liquid cargo unit supports 1 at one time or measuring the horizontal data of the deck base plates 6 corresponding to each liquid cargo unit support 1 independently, one point is selected from an area with better horizontal data of the deck base plates 6 to be used as a reference point for analyzing the horizontal height data of each deck base plate 6, and the residual value of the corresponding liquid cargo unit support pin 4 is calculated and recorded on the basis of the horizontal height data and the height of the corresponding liquid cargo unit support pin 4, so that a liquid cargo unit support pin residual measuring meter is formed;
4) liquid cargo unit support pin end opening surplus marking off and cutting stage: according to the liquid cargo unit support pin residue scale obtained in the step 3), drawing a liquid cargo unit support pin residue line 8 through the aid of a total station, performing two-dimensional retesting by using a tape measure, a level meter or the total station after the drawing is finished, and repairing and cutting the unit support pin lower opening residue according to the liquid cargo unit support pin residue line 8 after the retesting is correct, wherein in the embodiment, the lower opening residue of the liquid cargo unit support pin 4 is repaired and cut by using a flame cutting machine or a cutting machine;
5) after the liquid cargo units are hoisted and loaded onto the ship, the central lines and the rib position lines of the liquid cargo units are respectively aligned with the central lines and the rib position lines of the ship body, the installation and positioning work of the liquid cargo units is completed at one time, and the alignment conditions of the deck base plates 6 and the corresponding liquid cargo unit support pins 4 are counted and adjusted, so that the deck base plates 6 and the corresponding liquid cargo unit support pins 4 are aligned one by one.
The Total Station, namely a Total Station type Electronic distance meter (Electronic Total Station), is a high-tech measuring instrument integrating light collection, mechanical measurement and electrical measurement, is a surveying and mapping instrument system integrating horizontal angle, vertical angle, distance measurement and altitude difference measurement functions, a user can select which type of Total Station to use according to actual conditions, and the invention adopts a Leica TS09 series Total Station.
As shown in fig. 1, in the deck section construction stage, the deck liner plate 6 is installed on the deck (the upper surface of the deck 5 is then loaded by the deck 5 section, after the liquid cargo unit support 1 is processed, outfitting parts such as the liquid cargo unit piping support 3, the liquid cargo unit piping 2 and the like are installed according to the drawing requirements to form a liquid cargo unit, the allowance of the lower port of each liquid cargo unit support 1 in the liquid cargo unit is trimmed, and finally the liquid cargo unit is hoisted to be loaded onto the deck 5, wherein the liquid cargo unit support pins 4 and the corresponding deck liner plate 6 are butted up and down and then are folded, and the specific implementation steps of the precision control are as follows:
1) the preparation before the liquid cargo unit is hoisted comprises the following steps:
(a) deck base plate installation accuracy control
In the deck section construction stage, according to a deck base plate installation position inspection list, the installation size of the deck base plate 6 is inspected before welding, and the installation precision of the deck base plate 6 is ensured;
(b) liquid cargo unit support manufacturing precision control
Selecting a flat and hard non-concave field as a platform for manufacturing the liquid cargo unit bracket 1, arranging reference lines such as a central line, a rib bit line, positioning points and the like on the liquid cargo unit bracket manufacturing platform, and the levelness and the datum line precision of the liquid cargo unit bracket manufacturing platform are detected and adjusted by the total station, in the process of manufacturing the liquid cargo unit bracket, the levelness of the upper surface of the liquid cargo unit bracket 1 and the verticality of the liquid cargo unit bracket pin 4 are detected and adjusted by a total station instrument to ensure that the upper surface of the liquid cargo unit bracket 1 is positioned on the same horizontal plane, in the turning-over stage of the liquid cargo unit bracket, the upper surfaces of the liquid cargo unit bracket 1 are detected and adjusted to be positioned on the same horizontal plane through a total station, the opening size of a pin 4 of the liquid cargo unit bracket is detected and adjusted, meanwhile, each reinforcing member of the liquid cargo unit bracket 1 is adjusted according to a drawing, so that the normal level of turning over of the liquid cargo unit bracket and the manufacturing precision of the liquid cargo unit bracket 1 are ensured;
(c) deck level measurement, unit support margin calculation
After the deck 5 is installed in a segmented carrying mode, measuring horizontal data of deck base plates 6 by using a total station, selecting one deck base plate 6 in an area with better horizontal data as a reference deck base plate 6, calculating the height difference of the rest deck base plates 6 relative to the reference deck base plate 6, and calculating the residual value of each liquid cargo unit support pin 4 according to the height of the liquid cargo unit support pin 4;
(d) liquid cargo unit support allowance marking-off line
And after the residue value is calculated, drawing out the liquid cargo unit support pin residue line 8 by using a total station instrument in an auxiliary way, performing two-dimensional retesting, and repairing and cutting the lower opening residue of the liquid cargo unit support 1 according to the liquid cargo unit support pin residue line 8 after the retesting is correct.
(2) Liquid cargo unit hoisting
(a) After finishing the allowance trimming, aligning the center line and the rib position line of the liquid cargo unit with the center line and the rib position line of the ship body respectively, and completing the installation and positioning work of the liquid cargo system unit by one-time hoisting.
(b) And after the liquid cargo unit is hoisted, counting the alignment condition of the deck base plate 6 and the liquid cargo unit support pin 4.
In conclusion, according to the one-time hoisting, positioning and installing process for the liquid cargo units of the liquefied gas carrier, disclosed by the invention, the horizontal data of all deck base plates are collected, one point is selected from the area with better horizontal data as a reference point to analyze the horizontal height data of each deck base plate, and the allowance values of the corresponding liquid cargo unit support pins are calculated and recorded based on the horizontal height data and the corresponding liquid cargo unit support pin heights, so that the upper surfaces of the hoisted liquid cargo unit supports are positioned on the same horizontal plane, and the installing precision of the whole liquid cargo unit is improved; and secondly, the allowance of the lower opening of the liquid cargo unit support is repaired and cut before the liquid cargo units are hoisted and loaded onto the ship, so that the liquid cargo units are hoisted and positioned on the ship at one time, 70% of the shipboard positioning and mounting time of the liquid cargo units is saved, the mounting and positioning efficiency of the liquid cargo units of the liquefied gas carrier is improved, the resource waste of a gantry crane is reduced, and the dock period of the liquefied gas carrier is reduced to a certain extent.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (5)
1. The one-time hoisting, positioning and installing process for the liquefied gas carrier liquid cargo unit is characterized by comprising the following steps of:
1) deck section building stage: checking the installation positions of the deck base plates (6) according to the drawn deck base plate installation position checking list, wherein the deck base plate installation position checking list is determined by theoretical dimensions of ship design modeling, and if the installation positions of the deck base plates (6) do not accord with the deck base plate installation position checking list, informing corresponding personnel to carry out on-site correction until the installation positions of all the deck base plates (6) accord with the requirements of the deck base plate installation position checking list and welding;
2) liquid cargo unit support manufacturing and turning over: the method comprises the steps that a) the levelness and the datum line precision of a liquid cargo unit support manufacturing platform are detected and adjusted through a total station, and the datum line comprises a center line, a rib bit line and a positioning point; b) in the manufacturing process of the liquid cargo unit support (1), detecting and adjusting the levelness of the upper surface of the liquid cargo unit support (1) and the verticality of the liquid cargo unit support pin (4) through a total station to ensure that the upper surfaces of the liquid cargo unit support (1) are positioned on the same horizontal plane; c) in the turning-over process of the liquid cargo unit support (1), detecting and adjusting the levelness and the datum line precision of a turning-over platform of the liquid cargo unit support through a total station, wherein the datum line comprises a central line, a rib bit line and a positioning point; d) after the liquid cargo unit support (1) is turned over and fixed, detecting and adjusting the upper surface of the liquid cargo unit support (1) to be positioned on the same horizontal plane through a total station, detecting the opening size of a liquid cargo unit support pin (4), and adjusting the opening size of the liquid cargo unit support pin (4) and a reinforcing member of the liquid cargo unit support (1) to be consistent with a drawing;
3) deck horizontal measurement and margin calculation: after the deck (5) is loaded and installed in a segmented mode, the total station is used for measuring and recording the horizontal data of the deck base plates (6), a point is selected as a datum point in a better horizontal data area of the deck base plates (6) to obtain the horizontal height data of each deck base plate (6), and the surplus value of the corresponding liquid cargo unit support pin (4) is calculated and recorded based on the horizontal height data and the height of the corresponding liquid cargo unit support pin (4), so that a liquid cargo unit support pin surplus table is formed;
4) liquid cargo unit support pin end opening surplus marking off and cutting stage: drawing out a liquid cargo unit support pin allowance line (8) through the aid of a total station according to the liquid cargo unit support pin allowance table obtained in the step 3), performing two-dimensional retesting, and repairing and cutting the lower opening allowance of the liquid cargo unit support pin (4) according to the liquid cargo unit support pin allowance line (8) after the retesting is correct;
5) after the liquid cargo units are hoisted and loaded onto the ship, the central lines and the rib position lines of the liquid cargo units are respectively aligned with the central lines and the rib position lines of the ship body, the installation and positioning work of the liquid cargo units is completed at one time, and the alignment conditions of the deck base plate (6) and the corresponding liquid cargo unit support pins (4) are counted and adjusted.
2. The liquefied gas carrier liquid cargo unit one-time hoisting, positioning and installing process as claimed in claim 1, wherein the installation position inspection of the deck plate (6) in step 1) adopts a two-dimensional tape measure or a total station.
3. The liquefied gas carrier liquid cargo unit one-time hoisting, positioning and installing process according to claim 1, wherein the method for measuring the horizontal data of the deck plate (6) in the step 3) is to measure the horizontal data of the deck plate (6) corresponding to all the liquid cargo unit supports (1) at one time or to measure the horizontal data of the deck plate (6) corresponding to each liquid cargo unit support (1) individually.
4. The one-time hoisting, positioning and installing process for the liquefied gas carrier liquid cargo unit according to claim 1, wherein the two-dimensional retesting in step 4) is performed by using a tape measure, a level meter or a total station.
5. The one-time hoisting, positioning and installing process for the liquefied gas carrier liquefied cargo unit according to claim 1, wherein the trimming of the lower opening allowance of the liquefied cargo unit support pin (4) in the step 4) is performed by flame cutting or cutting by a cutting machine.
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| CN113212692A (en) * | 2021-04-29 | 2021-08-06 | 厦门船舶重工股份有限公司 | Method for positioning water mist nozzle in passenger public area of ro-ro passenger ship |
| CN113212692B (en) * | 2021-04-29 | 2022-08-05 | 厦门船舶重工股份有限公司 | Method for positioning water mist nozzle in passenger public area of ro-ro passenger ship |
| CN114368460A (en) * | 2021-12-29 | 2022-04-19 | 中船澄西扬州船舶有限公司 | Method for mounting middle support of liquid cargo pump pipe column |
| CN114212212A (en) * | 2022-01-27 | 2022-03-22 | 江南造船(集团)有限责任公司 | Mounting method of air chamber surrounding wall and liquid tank on liquefied gas carrier |
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| CN111232154B (en) | 2021-02-12 |
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