loss of oil during transportation 1

[imans]

Can anyone help me to give information regarding the acceptable level of oil loss during transportation (by sea tanker)? Currently we use "magic number" of 0.5 % but I dont know where the number comes from. Is there any international standard or any reference on that matter?

Thanks

 

[svanels]

The 0.5% has nothing to do with acceptable loss. Imagine from a 500.000 barrels tanker, you cannot throw 250 barrels in the sea or in a US port.

It has to do with differences in inventory transfer. If you were transferring discrete units (coconuts, tractors) the "acceptable loss" would be 0. Bulk tranfers (barrels, kg, tonne, liters) have a lot of inherent factors that reduce exact measurement.

 

[CarlPugh]

Oil volume depends on temperature.
If temperature increased you could get a + change. The volume received would be more than the volume shiped.
For transformer oil, the expansion is

Thermal Expansion, 68-158degF ml/ml/degF 0.0004

For 20degF change in temperature, I calculate a 0.8% change in volume.