Casing drains

The height of the pump shaft centerline above the baseplate shall be minimized. Adequate clearance shall be provided between the casing drain connection and the baseplate so that drain piping the same size as the connection can be installed without the use of a street (male-female) elbow. 

The turbine case pressure was increased by raising the pressure in the air-cooled surface condenser. This was accomplished by shutting off several of the air fans, which, in turn, increased the condensing temperature of the exhaust steam. But why would raising the turbine case pressure drain the turbine, anyway After all, increasing the surface condenser pressure also increased the pressure in the drum that the turbine case drained to. 

Option A From pump outlet Optiort B From casing drain... 

When M4 (or Ml) fuel thickening compound is not available, an acceptable alternative fuel can be prepared using a 60% - 40% combination of MO GAS and oil. (NOTE Any kind of oil will work, such as standard 30 weight motor oil, fog oil, or crank case draining.) The best oil to use is 90 weight oil. Example In a... 

Pump blocks should be provided with an open-end drain hub to collect pump casing drains, drainage from gland and seal piping at pumps and drains in pump suction and discharge piping. 

A persistent carry-over problem, as indicated by a constant accumulation of liquid in downstream equipment, is likely due to entrainment of small droplets of liquid in the gas stream. For example, the small amount of liquid that is withdrawn daily from the case drain of certain compressors is due to entrainment. 

The valving referred to in my start-up procedure is not provided in most applications. To evenly warm-up a large pump with the suction on top, you will have to install a connection from the warm-up line to the case drain at the bottom of the pump. If the pump case is not warmed-up uniformly, this will cause the seal faces to misalign during start-up. 

In some cases drains have to be installed during the construction of subsequent levels of the containment bund. Even other measures may be necessary to control the groundwater table such as for instance dewatering by means of vacuum pumping. 

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