Empty weight

Number of Stages per unit Empty weight Service weight Vessel body Diameter... 

Empty weight The overall weight of the vessel sitting on the foundation, fully dressed, waiting for operating liquid,... 

Operating weight Empty weight plus any operating... 

If moment Mj, is from seismic, assume Wj, as the operating weight at the base. If M, is due to wind, assume empty weight for computing the maximum value of f[,T and operating weight for Tlc-... 

The actual pressure in a cylinder will depend upon the type of gas in the cylinder and the physical state of the contents. Cylinders containing gases which are gaseous at all pressures practicable for the cylinder, such as nitrogen or helium, will have a pressure which reflects the amount of material in the cylinder, while those that are in equilibrium with a liquid phase, such as ammonia, carbon dioxide, or propane, will be at the pressure of the vapor as long as any of the material remains in the liquid phase, provided that the critical temperature is not exceeded. The weight of the cylinder in excess of its empty weight is used to measure the amount of gas in the cylinder for the latter type of gas. 

Empty weight of the unit (but including control console)—to enable selection of side rails. 

Empty weight and weight when full of liquid. 

Overall dimensions, empty weight and filled up weight (with dust). Design the support legs for maximum weight. 

Operating ptessttres and temperatures normal and maximum Empty weight and filled up weight along with weight of fittings. 

Tank Volume [mT Dimension [m] Pressure [bar] Empty weight [t]... 

The longer the collection duration, the more accurate the calibration. Typically, calibration collection time should be several minutes. The scale must then have adequate capacity to weigh the empty and full container. Scale accuracy must be at least 10 percent of the empty weight of the container. For example, if the container weighs 2 lb, the scale must be accurate to at least 0.2 lb or less. 

Example 12.1. Determine the required skirt thickness and the number of bolts needed in a vessel with an outside radius / = 7.0 ft. Let empty weight IVi = 160 kips, weight of contents IV2 = 1440 kips, wind-bending moment M = 1500 ft-kips and temperature — 300 F. Assume A307 bolts and use Figure 8.11 for the external pressure chart. 

---