FuelsManager Defense
298 Administrator Manual
Where
Available volume/available mass
Available Volume is defined as the amount of net or gross volume available for
pumping out of a tank. It is calculated as “0” if one or more of the following
conditions are true:
If these conditions are not met, the available volume calculation is defined as
using the following equations:
Net Available Volume:
Available Mass:
Gross Available Volume:
Where:
NSV = Net Standard Volume (Sinopec method NSV in liters,
PetroChina method NSV in M
3
)
W = Water percentage (% BSW)
G = Floating root mass (kg)
p20 =
Density of product @ 20°C (Kg/m
3
)
NW is returned in kg for Sinopec method
NW is returned in metric tones for PetroChina method
Level <= Low level Alarm, Low-Low level Alarm, or User Defined
Level <= Water Volume
Level <= Minimum level as defined in the strap table
NAV = Current Net Volume of Tank – [(((SVC-FW) x CTSh x ((100.0-
%BS&W)/100.0)) +/- FRA) x VCF]
AM = NAV x Standard Density
GAV = Current Gross Volume of Tank – [((SVC-FW) x CTSh) +/- FRA]
SVC = Strap Volume at the Minimum Working level
FW = Free water + Tank Bottom Solids (if any)
CTSh = Tank Shell Correction
FRA = Floating Roof Adjustment
To Next Page
Loading...