Failure cast iron-lined main

Selected Examples of Failure and Their Prevention Cathodic protection of water mains Here two examples of cathodic protection (i) ductile iron main and (ii) cast-iron-lined main are discussed. 

Deterioration of water pipe fittings such as service saddles contributes to water main failures. This type of failure may be due to galvanic corrosion since the pipe is cast or ductile iron, saddle is either bronze, steel or cast iron and the service line is made of copper. 

On smaller decanters, the frame has often been made from cast iron. More usually it is fabricated from steel channel or box sections. The frame needs to be a rigid support for the rotating assembly. The surfaces for the main bearing pillow blocks are accurately machined in the same plane, and in line, to ensure no end-to-end misalignment of the rotating assembly, which would cause premature bearing failure. Some manufacturers fill part of the main frames of their larger machines with concrete effectively to form an inertia... 

---

See also in sourсe #XX -- [ , ]

---