Posts about table 53A written by ronmooring. both ASTM and tables , calculations for Special Applications, LPG/NGL calculations). Volume VII – Generalized Crude Oils (Tables 53A & 54A) Volume VIII – Generalized Products (Tables 53B and 54B) Volume IX – Individual. If ” PRODUCTS ” TABLES 54B and 6B are selected, 1, A.S.T.M. TABLES. 2
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Written by Capt Rajeev Jassal on September 23, Here is how the ullage report would look like so far. Your work is greatly appreciated, Sir!
Thanks for sharing ur knowledge.
ASTM Table Series for Oil Survey
Let us say we got the volumes from the ullage tables and the volumes for each tank are as per below. But what if we are provided with API gravity at some other temperature, say at 80 deg F? Unit of weight What is the unit of this weight? Rajeev, Above well explained. So here is what we have.
There are so many tables to use and so many terms that float.
ASTM Table 53 / 54
We need the density of the cargo to convert the volume of cargo to the weight. The standard volume of the cargo would also remain same as this is the volume at the fixed temperature 15 Deg C. Really helpful sir, I am preparing for Ch Mates phase I exams ans as I am from a dry cargo background, this artice really helped me out.
ASTM tables without any letter are common for both crude oils and product oils. The density table could look something like this.
Taboe as the density also changes with the temperature, we would need the density of the cargo at the cargo temperature to convert the observed volume to weight.
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ASTM Table 53 / 54
Thank you sir, for explaining complicated topics in such a lucid manner, its an art Now we get the volumes for each of these tanks for the corrected ullage that we have got.
In this case, we need to get the volume correction factor VCF to convert the volume at the observed temperature to the standard volume which is volume at 15 Deg C astk Volume at 60 F respectively. So as we can see for temperature 34 Deg C, the volume correction factor is 0. And when we multiply the volume at observed temperature with VCF, we get the standard volume, this time the volume at 60 Deg F.
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Just wanted to tale one thing how calculations are performed on chemical tankers.
So, in the same manner, we get the VCF Volume correction factor for other required temperatures that we have measured in each tank. This is true especially for vegetable oils Correct me if I am wrong. Always waiting for more articles. Different manufacturer may have different densities for same chemical.
And it is not that complicated. So when in these ports, we need to have the volumes in Barrels and temperature in Qstm F. But for petroleum products and crude oils, ASTM tables are used for calculating cargo weights. Thank you verymuch sir. The density at 15 Deg C is always the density in Vacuum. Asttm weight in Vacuum to Weight in Air and vice-versa Ok, so now here is the first thing that we can learn.
This is something a chief officer cannot afford to do it wrong. Lai h Nov 2, We have the volume at 15 Deg C and we have the density at 15 Deg C.