Does nominal capacity equal to maximum capacity for a tank?

[billbusy]

There is clear definition for maximum capacity in API 650 5.2.6.2

How about nominal capacity? Does nominal capacity equal to maximum capacity for a tank?

Thanks.

3 years industry experience;
Oil & Gas industry in Canada.

 

[JStephen]

Usually, nominal capacity would be taken as the capacity to the top of the shell.

 

[IFRs]

If this question is related to dike capacity or secondary containment, 40CFR112 SPCC says "Storage capacity of a container means the shell capacity of the container."