Dear All Master,
I am facing difficulties to define the nozzle size for PVRV (Pressure Vacuum Relief Valve) on external floating-roof tank.
As my understanding, nozzle size is defined based on inbreathing and outbreathing calculation which mentioned in API 2000, however I noticed that API 2000 does not apply to external floating-roof tank.
Does anybody know what kind of STD and CODE can be referred and how to define the nozzle size and PVRV for external floating-roof tank?
Detail tank as follows:
Service : Mobile Gasoline
SG : 0.77
tank size is 28m (ID) x 18m (H)
Capacity : 8000 m3
Design Pressure : FOL + 714 mmH2O
Load in rate : 850 m3/hr (12in Liquid inlet nozzle)
Load out rate : 160 m3/hr (8 in Liquid outlet nozzle)
Your advise is highly appreciated.
Regards