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Another batch of Jiangnan Shipbuilding ships rose from the dock to achieve the goal of more than half
On June 28, Jiangnan Shipbuilding, a subsidiary of China Shipbuilding Corporation, successfully completed an 84,000 cubic meter VLGC and a 23,000 container ship, and two 86,000 cubic VLGC half ships were lifted. This is the third batch of Jiangnan Shipbuilding Shipyard No. 3 in the year. The completion of this node marks that Jiangnan Shipbuilding has achieved the goal of more than half of the time and half of the tasks.
Since the No. 3 dock "double-line and build", the company has implemented a refined management production model and gradually increased the construction speed and cycle. As of now, 60 days has become the standard cycle. "But in fact, it is still very difficult to achieve this goal," Chen Fengyu, director of the dock, introduced.
In order to realize the 60-day docking cycle, the company carried out docking planning, and made the relevant departments familiar with the status of each ship and the completion nodes of each project. Under effective planning, each participating construction department divided the 60-day docking period into 6 phases in units of 10 days, combined with the construction conditions of each ship, from site resources, crane resources, labor, rainy weather, safety, quality, accuracy In terms of management and control, sort out the risk points that affect the integrity of docking, and clarify the measures and responsible persons. It is precisely because the planning is in place that some of the wharf-stage projects such as piping, cable laying, shafting, steering gear, and generators are advanced to the dock for construction, which makes the completion of the docking of 23,000 box ships and 86,000 cubic meters of VLGC compared with the same series of ships. Increase by 10% and 8%. Among them, the stern formation of the 23,000-carton container ship was completed 4 days in advance, and the cable lighting was completed 9 days in advance. An 86,000-square-meter VLGC cable was illuminated 7 days in advance. The epoxy casting on the top of the liquid tank was completed with 2 tanks compared with the previous series. This time, the epoxy casting of 4 tanks was achieved for the first time, and all the epoxy hardness inspections were completed; A VLGC half-vessel is formed on the basis of two cargo holds of the same series, and three cargo holds are formed, which shortens the construction of the next batch of the ship by 25 days, and the half-ship stern is formed before floating. The follow-up cable lighting operation is shortened by 15 days.
Mounting efficiency is an important factor affecting the docking time. In order to speed up the progress and improve the quality, precision control is involved in the entire construction process of all key projects. By setting the four types of baselines of compartment positioning, bulk rail installation, outfitting installation, and lashing bridge level, the cargo compartment molding and outfitting are guaranteed. Installation accuracy; by simulating the positioning of the steering gear base and trimming the margin before the main group to achieve a one-time positioning success, from the original 3 cranes to 1 crane, saving 66% of crane resources; using a special measurement tool simulation of the bottom cone The test box replaces the original self-test box. Not only is the inspection speed faster, but the pass rate is also higher than 96%, which can save 502 times 40 feet and 1004 times 20 feet of self-test boxes for a single ship of 23000 boxes, greatly improving the test. Box efficiency, saving costs.
In the first half of this year, the epidemic had a certain impact on the company's production, but through hard work, the company successfully recovered the time and tasks of the epidemic, and achieved the goal of "double half". But the next task will be more onerous, "We are ready!" said Tan Dexiang, the leader of the No. 3 dock working group.
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