Being meticulous about details in the 'Jiewei' wheel.
Release time:
2016-06-30
On the day the 300,000-ton 'Jie Wei' ship entered the dock, I stood at one end of the dock, watching her move forward calmly under the blue sky and white clouds, beautiful as if welcoming an old friend. The bulbous bow grew larger until it blocked the blazing sun, and I couldn't help but gaze at her deeply. This giant ship, over 300 meters long, more than 20 meters high, and 70 meters wide, was built and repaired by workers who are quite small in comparison. Only by their relentless attention to detail could they create perfect ship artworks, and now, she is in our hands.
According to Ma Weidong, Vice President of Changhong International, a few months ago, Gen 8 Company contacted Changhong International. From the initial contract negotiations to the certification of the submitted repair plan, it took more than a month. In April, both parties signed the repair contract for the 'Jie Wei' ship. The ship entered the factory in early June.
After preliminary inspections, the repair project for this ship is divided into three parts: routine dock repairs, electromechanical engineering, and mainline engineering. The routine dock repair mainly includes anchor chains, propeller disassembly and assembly, tail shafts, and hull painting; while the electromechanical engineering includes main engine cylinder lifting, motor maintenance, pipeline replacement, and pump disassembly. As for the more complex mainline engineering that affects the ship's schedule, it covers the ultra-high-pressure water rust removal and painting project for 10 ballast tanks, as well as the replacement of over 300 tons of steel plates in the hull.
As the first ultra-large VLCC tanker contracted since the establishment of Changhong International's ship repair business, after receiving the repair task, the leadership of the repair department took the lead, and all personnel were mobilized. Given the special nature of the tanker, they promptly held a single ship production planning meeting and developed a scientifically rigorous plan, with daily work plans sent to the shipowner in both English and Chinese. 'Previously, everything was handwritten, but this time it was done in the most detailed manner,' said the chief ship repair manager, Xiong Yongbiao. 'From the initial preparations to now, halfway through the repairs, we have done the best in terms of details.' Ventilation and lighting in the cabins during the tanker repair are key to ensuring safe production. Before the ship entered the factory, brother departments brainstormed and successfully solved the problem of insufficient equipment. In addition, the working efficiency of the scaffolding teams 'Yinhe' and 'Yonglu' was extremely high, completing all 10 ballast tanks in just 7 days.
This ship repair process is slightly different from previous ones. Xiong Yongbiao explained: 'The shipowner requested that the rust in the ballast tanks be removed with ultra-high-pressure water before planning the steel structure project, which wasted a lot of time in the early stages. Coupled with the high difficulty and large volume of subsequent repair projects, this posed significant challenges for our construction in all aspects.' Where there are difficulties, there are solutions. 'The rust removal and painting of the ballast tanks conflict with the steel structure replacement space, so we are proceeding in batches to avoid overlapping operations.'
However, the most time-sensitive work is the replacement of the engine room motors and seawater pipes. Currently, it is the peak of summer, with high outdoor temperatures, and the temperature inside the engine room has exceeded 45 degrees. However, the on-site management personnel, fitters, copper workers, and outsourced personnel of the repair department have reasonably arranged work times and are carrying out construction in a tense and orderly manner. In any corner of the 'Jie Wei' ship, you can see workers sweating profusely, taking a sip of water when thirsty, wiping sweat when hot. From a distance, their figures appear so blurry, but the results they leave behind are clear and striking... Cold work operators Wang Haishen and Li Haojie; three supply operators Chen Fei; copper work operator Zhu Haiming changed clothes several times a day due to sweat. In the end, the motor repair project and the replacement of the seawater pipes in the engine room were completed on schedule and received recognition from the ship side.
It is worth mentioning that this repair also has some small innovations. During the steel structure replacement, the construction personnel opened process holes on the deck, allowing materials to enter and exit the ballast tanks more safely and quickly with the cooperation of the eight rods and winches.
According to statistics, as of now, a total of 500 staff members have participated in the repair project of this giant ship, and the ultra-high-pressure water rust removal for 10 ballast tanks is basically completed, while the ironwork and painting projects are ongoing.
'Jie Wei' was built in December 2000, is a British-flagged ultra-large cargo ship, with a total length of 333.5 meters, a width of 70 meters, and a depth of 25.6 meters. The smooth progress of the repair project indicates that Changhong International has a capable and strong repair team that can meet the requirements of shipowners from various countries and successfully complete ship repair projects.
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