Food Processing Pump
Application: Boiler Feed used in Food Processing
Pump Details: Ingersoll Rand 6x13 DAD 7-Stage
Pump Type: Multi-stage Horizontal Split Case
Upon inspection of this failed boiler feed pump, Hydro discovered multiple problems caused from previous low quality repairs. Not only did the first stage impeller and impeller rings have incorrect hardness, but the first stage impeller was so severely damaged by cavitation, Hydro deemed it unrepairable.Hydro manufactured a new first stage impeller from a more durable stainless steel and ground out the cracks on the other impellers, stages two through seven. Extensive damage was also found at the thrust collar nut thread area, so Hydro manufactured a new shaft utilizing proper metallurgy. To adjust the bore diameters, which were egg-shaped and tapered, Hydro machined them to proper dimensions.
Hydro performed magnetic particle inspections to ensure the high quality weld repair of the impellers. In addition, a solvent removable liquid penetrant inspection was performed after the impellers were hard chrome plated. The impellers were individually balanced to 1 W/N and then the assembled rotor was balanced to 1 W/N.
The pump was recently installed at the food processing plant and has been running well. Hydro's stringent repair practices will provide increased MTBR for this pump in addition to reduced repair costs for the plant.