Hi All
My name is Nicholas.
I have a tank design to the API Standard 650, low pressure application. However, in an emergency situation, I would like to route condensate at an average pressure of 150 psig to this tank (of design atmospheric pressure). The tank will act as a means of storage until the situation (of too much slugs from offshore) is brought under control.
I am evaluating the out breathing from the tank and comparing it to the capacities of the existing relief systems on the tank.
I initially evaluated the out-breathing using a Flash simulation in Hysys. I would like to query if I should also perform a Volatile Liquids calculation and add the result of the Flash calculation to the result of the Volatile Liquids calculation. This seems to be the case in Section 3.3.2.2.1 c of API 2000. Did I interpret this section © correctly?
Also, for further clarification, I used Boyle's/Charles' Law to convert from the actual tank conditions to standard conditions:
Actual Conditions:
P1 = 14.69 psia (atmospheric tank)
V1 = 7074 ft3/hr (Section 3.3.2.2.1
T1 = 26 degC = 538.47 deg R (condensate)
Standard Conditions:
P2 = 14.69 psia
V2 = ?
T2 = 60 degF = 519.67 deg R
The V2 = 6827 ft3/hr
Is the above a reasonable estimation?
Thanks and Regards