Questions regarding Crude Loading/Discharging Operations?

I was a cadet on an oil tanker. We mostly did product (regular,diesel, premium) and sometimes ethanol. So I have pretty good experience on that side of things. I might actually get on a crude tanker. Anyone work on them can give me any insights? Reading a lot on crude oil washing. Also I worked on a tanker where valves are all operated by a computer. How are those different compared to where it’s actual switches on a board? I’m so used to where I can see everything on the computer (rate, ullage, pressure, etc). How are loading and discharging compressor to product? Since it’s just one type of cargo(crude) how often do you tank switch? Or do you just have all tanks open?



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2 thoughts on “Questions regarding Crude Loading/Discharging Operations?

  • July 18, 2020 at 6:55 am
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    Depends, if your going to a true crude oil tanker (ie atc, or polar) itl be a pumproom ship. Loading will be similar then with product just at a much higher rate. But again the ships are much larger so it’s all relative. Discharging and stripping will be much different. If you get on a product ship that’s running crude (ie a Crowley or osg rig) itl be exactly like running products. The rates will be higher. We would load crude in corpus at 30k bph. Crude oil washing or COWing is super easy! Don’t over think it. Crude ships are way to easier to work on then product ships running gas diesel etc.

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  • July 18, 2020 at 6:55 am
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    Regarding computer controlled cargo system vs controlling from panels with levers for cargo pumps etc- i’ve worked with both and as long as You understand the principles of liquid transfer it really doesn’t matter if You start the pump and open the valve with a mouse click or by raising a lever and pushing an actual button. Controlling from computer is more convenient because all information is in one place usually instead of being spread out all the ccr, such as pressure in tanks being shown in one end of ccr, list of ship in other and so on.

    Regarding controlling the flow of one product- follow chief officers loading plan. I doubt that all tanks will be open due to 1) possibility of leaks 2) excessive stresses on the hull 3) most importantly that it is harder to control so many tanks. Usually You will load some tanks together not exceeding their designated loading rate, at some point switching to others.

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