describe metrics formula with cavets description
tk_100_scf
for HRS18006This metric calculates the inventory in the front end tank TK_10 at 18006. This tank contains only low pressure gas.
To calculate the gas volume, the density of the helium is calculated according to the pressure PT_100
and this is multipled by the empty tank volume to get a mass of helium in lbs, which is converted to SCF.
The empty volume of TK100 = 2882.15 ft3
PT_100
is the pressure of TK_100
scf(density_he(PT100) * 2882.15)