Pump Group were contacted to assist with an issue at a Coal Fired Power Station…
A team of our Site Services engineers attended site and carried out an endoscopic inspection on the Vacuum Pump. After reporting on the findings, the decision was made for our site team to remove the unit and transport it back to our workshop facility for disassembly and further inspection.
Upon stripping, it became apparent that there was substantial damage to the internals of the pump. The endplates and rotor were scored heavily. The gland seals were worn and the gland locations needed rebuilding. The bearings were stripped and condemned because of contamination. When measured, both bearing housings were oval shaped and outside tolerance. The pulley was found to be in poor condition and we recommended fitting new.
The packing sleeves were grit blasted and rebuilt with Belzona 1131 Bearing Metal. We machined the rotor, the endplates, the body length and O-rings were machined to maintain the OEM tolerances. The damaged gland areas were rebuilt with Belzona 1131 and machined to size. The bearing housings were metal-sprayed and new bearings & consumables were supplied. A new pulley was supplied and fitted to prevent belt slippage. The pump was assembled vertically to achieve correct clearance and then pressure tested.
The unit was then fully performance tested in our test cell, and at 480mbar the pump achieved 9400m3/hr discharge volume. The Pump was spray painted, and underwent final inspection prior to being transported back to site by our transport. Our site service engineers then installed and commissioned the unit.
The unit was removed, refurbished, tested and installed and commissioned all within the time-frame allowed by the customer and within budget.
As Rotating Equipment Specialists, Pump Supply & Repair Group is the one stop shop for all of your mechanical needs.
For more information on how PSRG can assist you in your operational requirements, please contact our Operations Director, Martin Cooper at email@example.com or on 0161 864 4678.