shell outage => tank car capacity

4. Calculations for Conventional Tank Cars. The dome capacity in gallons per inch is shown on the tank car capacity table. If the gauge is reported as shell outage, obtain the measured quantity directly from the capacity table. If gauge is reported as dome innage, calculate the measured quantity by multiplying the dome capacity per inch by the dome innage and add the resultant quantity to the shell capacity. Calculate residue and free water quantities from the "bottom" range of the capacity table for the respective innage gauges because this section of the table has been corrected for deadwood." Recommended procedure for calculating tank car:
http://131.70.202.82/dynaweb/dlaps/dodman/@Generic__BookText...

Use the tank car gage stick to determine dome innage and shell outage in nonpressurized rail tank cars that have shell outages of 1 foot or less. If the tank car has more than 1 foot of shell outage, use a petroleum gage stick or an innage tape and bob. The tank car gage stick is made of hardwood or similar material. It is 36 inches long.
www.irwin.army.mil/G3/Tactical_Safety/Fueling Safety/ Fueling%20Operations%20Safety%20-%20FM%2010-67-1.pdf

IT Division Develops GEMS for ExxonMobil Fuels Marketing
YEI’s Information Technology Services Division recently developed a Global Engineering Management System (GEMS) for ExxonMobil Fuels Marketing. GEMS is made up of two major components: Engineering Data Management System (EDMS) and Project Pipeline Information System (PPIS).
http://www.yangenterprises.com/gems.htm