Determining proper loading weight

Discussion in 'Oilfield Trucking Forum' started by Shyrage, Jan 24, 2015.

  1. Shyrage

    Shyrage Light Load Member

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    Been in the game for quite sometime. Usually when i load oil i determine how much to load by adding 130 plus the gravity. Ive been wondering where this 130 is coming from. My boss is telling me to load 141 plus gravity for small roads since the truck has an overweight permit. Im wondering where he got the 141 because he doesnt know. Any help?
     
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  3. TNMT

    TNMT Light Load Member

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    SPECIFIC GRAVITY OF CRUDE OIL AND METHOD OF FINDING i:The instruments used are a hydrometer and a standardthermometei The hydrometer, which is a glass column marked with graduations fron 10** to 100**, was invented by Antoine B^aume, a French chemist, and th scale on the instrument has always borne his name. The hydrometei when placed in a jar or a bottle of oil, sinksto the point on the seal which indicates the gravity in degrees B^aume. The basis of temperatur for testing oil is 60 degrees Fahrenheit and for oil at a greater or lestemperature, variations must be calculated. Hydrometers are usual! provided with a special scale for figuring temperature variations. Th specific gravity is found by dividing 140 by 130 plus the B^aume degrees for example, if the hydrometer registers 30", this added to 130 equals 16( which divided into 140 shows specific gravity .875".Following is a table showing B^aume degrees, specific gravity and weighi per gallon of oil.




    Got it? I hope? I think this is where the 130 comes from.
     
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  4. TNMT

    TNMT Light Load Member

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    To make it simpler I guess. 30 is your measured gravity. You then add 130 which is 160 then divided into 140 which gives the specific gravity of .875. then look at the B aume table and it gives you your specific gravity and the weight per gallon. Which will also be influenced by the temperature of the oil.

    So you see its much easier to say gravity plus 130. And now ya know why no one explains it to you.

    If I'm wrong someone please correct me.
     
  5. TNMT

    TNMT Light Load Member

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    He is probably saying 141 cause through trail and error he knows it will work.
     
  6. cmbks21

    cmbks21 Medium Load Member

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    Sounds a little chinese, i guess thats from the piece of paper that comes with them? Never payed much attentionto that

    130+G interstate
    140+G non interstate


    Or you can just load 200 and call it good$$$$
     
  7. cmbks21

    cmbks21 Medium Load Member

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    We run computer tickets and i played with the temp on it, and it changes loaded bbls drastically, crazy what +- 10° will do
     
  8. TNMT

    TNMT Light Load Member

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    Trust me on this. NO one explained it to me either.
     
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  9. TLeaHeart

    TLeaHeart Road Train Member

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    First off you need to know the weight of your truck.

    80,000 minus weight of truck = load to carry.

    Standard measure for 40 gravity oil at 60 degrees, is 7.33lbs per metric ton.. a metric ton is 2,204 lbs, or approx 308 lbs per barrel. gravity affects the weight, higher gravity weighs less.

    80,000 - 27,500 = 52,500.
    52,500 / 7.33 / 42 = 170 blls (7.33 is the conversion factor for 40 api, and 42 gallons per blls)

    means you can load 170 bbls of crude. 170 minus 40 gravity is 130 for rule of thumb loading.


    so for you overwieght permit,

    141 + 40 gravity equals 181 blls

    so 11 additional blls adds 3,388 lbs at 40 gravity.


    hope all that helps
     
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  10. TNMT

    TNMT Light Load Member

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    Oh, we had to measure temp for Koch Brothers when we thief their tanks. A thermometer with a wooden back. Forgot what it is called. Anyway the temp was then recorded on the bills along with the standard stuff. That was then entered into a computer for proper billing and payment. As you say the temp does make a difference on the amount you pulled from the tanks. But 130 to 140 is generally the rule of thumb. Our trucks were required to load at least 180 barrels more or less a barrel or two. SSSSh your not supposed to know this but generally its accepted to claim to load short and then sell slightly higher. You load 176 ish or so lets say and then you unload at 180 at a different customer. Mostly to make up the difference in temp, inaccurate tape reading, and the extra or short you get from shutting off the valves. Do not try this at major oil companies. LOL Never ever let someone measure a tank for you. LOL They will short you.
     
  11. TNMT

    TNMT Light Load Member

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    Too easy to claim 14' 5" and a half inches as 14' 5" inches at the loading point and then claim 14'5" and 3/4 at the unload point. However its a unwritten code you can't claim too much to be obvious about it. Especially where its not checked. From one independent to another independent. Happens all the time at older independent leases. To each his own not advocating stealing. Just the way the old guys taught me anyway. If everyone is playing the same game I guess it just evens out in the long run. The Koch rule for measurement(might just be slang or a put down) is now the standard way of measurement for oil. Because they got caught playing games misreading oil and filling false claims with the US government. So I am told anyway. I was told this was called that because it forced everyone to more or less to use the same method and standard to measure collected oil. Don't take my word for it. Just what I was told.
     
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