Knowledge of petroleum product storage and transportation
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I would like to ask: When transporting petroleum products by ship, the loading capacity is either 3000 m3 or 5000 m3. Are there any specific regulations regarding the time required for loading? What is the standard? Thank you
The relevant specifications regarding the time required for loading oil onto a ship aren’t very clear, nor is it entirely clear what exactly is needed. However, based on my personal experience, the time it takes to load oil depends on the speed at which the ship can be loaded, and this speed is determined mainly by the capacity of the pumping systems on board. Sometimes, the capacity of the pipelines at the dock also plays a role. Generally speaking, around 80% of the capacity of the ship’s pipelines should be sufficient.
This post was last edited by firemale on 2009-6-3 23:22. There are no special requirements; it’s just that safety considerations impose limits on the flow rate. High flow rates can be achieved through multiple pipelines with large diameters. For pipelines over 350 mm in diameter, a volume of 3,000 m3 can generally be processed within 5 hours. Some ocean-going ships can unload 5,000 m3 of oil per hour abroad.
For a ship with a capacity of 3,000 cubic meters, there are no such large loading and unloading pipelines; the diameter of these pipelines is generally between dn150 and dn200. The standards specify requirements regarding the flow rate during loading.
One is the flow rate; another requirement is the ambient temperature. If the product is volatile, it is generally filled at night to reduce volatilization.
The typical flow rate for 3000T is around 400 per hour; you can calculate the corresponding time. For 5000T, the flow rate is about 500T per hour, so it would take around 10 hours. It’s in both the shipowner’s and the port’s interest to complete the loading as quickly as possible
Specific provisions are outlined in the \"Code for Design of Loading and Unloading Processes at Petrochemical Terminals\" JTS165-8-2007; this code can be downloaded from the website.