a. The maximum degree of filling must not exceed the degree of filling determined by the following:

Where:

t

_{r} is the maximum mean bulk temperature during transport,

t

_{f} is the temperature in degrees celsius of the liquid during filling, and α is the mean coefficient of cubical expansion of the liquid between the mean temperature of the liquid during filling (t

_{f}) and the maximum mean bulk temperature during transportation (t

_{r}) both in degrees celsius.

b. For liquids transported under ambient conditions α may be calculated using the formula:

Where:

d

_{15} and d

_{50} are the densities (in units of mass per unit volume) of the liquid at 15 °C (59 °F) and 50 °C (122 °F), respectively.

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