[Haichuan Equipment Installation] Case Study of Roll-on Installation for Large-scale Chemical Equipment – Roll-on Installation of Hengyi Brunei Xylenes Tower

This is very important – you need to apply for permission from the local maritime authority before starting the work; this must be done in advance

Key point: It is important to calculate tide levels and water levels; this may require joint efforts from logistics companies and shipowners’ staff -----------------------------------------------------------

Key point: All necessary documents must be in order before shipment. Communication should take place in advance, and everything needs to be finalized before shipping. A detailed checklist is definitely required

Take a look at this giant – then you’ll understand why large pressure vessel manufacturers are all located along the coasts and rivers

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Key points: astronomical tides, strong lateral winds, push-back escort tugboats

Key point: Tide levels are truly important; emergency measures need to be considered

During the transportation of equipment to Ishima, the logistics team faced numerous challenges, among which the most difficult was the condition of the port facilities in Ishima Port. Unlike the Zhangjiagang Gangxin Terminal, which previously handled roll-on/roll-off operations, Shidao Port’s main activities are fishing and ship repair; it lacks experience in such operations, and certain existing regulations objectively affect safe operations. To ensure the smooth shipment of the equipment, drawing on practical experience gained from numerous large-scale shipments and roll-on/roll-off operations, Hengyi and its logistics team provided a detailed roll-on/roll-off plan as well as appropriate emergency response measures, thereby completing the shipment of the equipment successfully.

Key point -- prevent tail lifting. Maintain stability: Roll-on operations began at 5:00 on March 18, and by 5:45, the entire carburetor unit had been loaded onto the ship. The carburetor body weighs 630 tons, and together with the axis, the total weight is 800 tons; if it is driven directly to the designated position at the bow of the ship, this will cause the ship’s stern to lift, affecting the loading of the cold low-pressure separator. Therefore, the method employed on site was to have the vaporizer positioned at the stern of the ship; once the cold low-pressure separator approached, the two units were treated as a single entity and moved forward at the same speed. The seagoing vessel adjusted the ballast water to ensure that the stern deck remained level with the dock at all times.