New Test Cell

The major news this month is the installation and commissioning of Pump Supply & Repair Group’s  £100,000 investment in our Test Cell In short we can now Test Pumps up to 300kW and produce a full performance curve INCLUDING power, efficiency and NPSH. Our New test cell is used to quantify the hydraulic and mechanical quality of our repair and pre-test pumps to determine if work is necessary. To see our Test Facilities webpage with a video showcasing our Thermodynamic Testing Capabilities, please click here 

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Ash Crusher Repair

Ash Crusher Repair Pump Supply & Repair Group have recently undertaken the repair of a coal ash crusher on behalf of a UK power station. The crusher was found to be in a poor condition after many years of service. Impact damage was found to the rotor hubs which needed to be corrected by carrying weld repairs using stelite impact HS360 rod. Other areas of concern included wear to the shaft locations and wear to the gland sleeves. these areas were spiral welded and machined. Both gears were also found to be worn with excessive clearance found between the teeth. New gears were manufactured and fitted then new side sections were fabricated and fitted to badly eroded areas. Internals and externals of the hopper box were grit-blasted. The unit was then rebuilt with new copper bearing assemblies, new sets of packing rings and new gasket & shim sets. We have modified the main problem area which was the primary cause of bearing failure – gland leakage – fitted new labyrinth seals and large shaft throwers to deflect debris away from bearings. The unit was spray painted and then dispatched to the customer and is now back in operation. Repairs Quotation Engineer Email: ssmith@pumpgroup.co.uk Direct No: 0161 864 5176

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Belzona Repairs

Pump Supply & Repair Group were asked to offer advice regarding how to repair excessive corrosion to steel pipework on an exhaust steam manifold from a boiler house without replacing a complex manifold. In December 2008 the inlet flange and 1500mm of the pipe bore was coated internally in situ on site using Belzona 1511 Super High Temperature Metal to recover the surface profile, then coated with Belzona 1391 Ceramic HT Metal. Inspection twelve months later revealed that although the coating had been attacked by cavitation caused by high pressure steam, no further damage had occurred to the pipework. Once again, the Belzona coating has arrested the corrosion of the pipework, effectively increasing its life – additional coatings can now be applied to prolong the life further and avoid the expensive steel pipework replacement program previously carried out on this site. The repair was carried out during a three day shut down. Site Services Manager Email: clambley@pumpgroup.co.uk Mobile No: 07887 721900

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In House Repair Video

Pump Supply & Repair Group have recently been filming the Repair Activity in our new purpose built repair workshop. This is the first of many videos to come to showcase our experience and expertise on overhaul of all types of rotating equipment from around the UK.

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High Temp Chemical Reactor Fan

Pump Supply and Repair Group have recently refurbished a high temperature (650 °C) reactor fan for a major chemical supplier. The failure occurred on site during cold weather, where water-cooled equipment froze during January. Bearing design was from the 1960’s, so this technology was white metal liners inside cast iron water-cooled housings. The units had temperature probes to monitor bearing temperatures. As can be seen above, the water-cooled bearings have cracked in frost conditions, causing major damage resulting in plant shutdown time and loss of production. The total fan unit was disassembled, M.P.I. testing of castings was carried out. All water chambers were bead blasted to identify problems at M.P.I. test stage. Some cast iron gas welding was carried out at our Manchester workshops. The castings were cold metal stitched. All water chambers coated with Belzona 1341 Superglide. To reduce future scale up problems, the main shaft has been hard chrome coated on bearing areas to original sizes, where the white metal bearings run. Both white metal bearings were re-lined and bored, scraped to correct fit and clearance. All bearings aligned on site. The fan assembly was balanced to G. 2.5 Dynamic @ 3500 RPM. The unit was commissioned on site to aid the customer achieve tight delivery schedules. Operations Director Email: mcooper@pumpgroup.co.uk Tel: 0161 864 4678

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Pump Supply & Repair Group are on the move

This month sees the next exciting stage of growth for our Group, we have now moved to our new purpose built premises, CP House, in Trafford Park, Manchester, doubling our premises space to 32,000 ft2.

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Major Pump Sales

One of the two SPP KP15 Cooling Water Booster Pumps supplied in July to a Pharmaceutical Company. The 8″ Cast Iron End Suction pumps have a designed duty of 384 m3/hr @ 30m: they were fitted with EFF1 Brook Crompton Motors and spark proof coupling guards. Pump Supply & Repair Group worked closely with the end user and the Project Consultants to ensure that all aspects of the process data sheets were met. The SPP pumps were factory performance tested and both pumps achieved in excess of 86% efficiency ensuring that the customer benefits from year on year energy savings. Sales Department Email: sales@pumpgroup.co.uk Direct No: 0161 864 5179

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Belzona Application – Venturi Scrubber

Pump Supply & Repair Group has recently undertaken the Belzona application of a Venturi Acid Neutralisation Scrubber. Previously the scrubber had been manufactured from Hastelloy C22 material which was expensive to manufacture and was also still susceptible to corrosion from the media. The customer wanted to change the substrate to carbon steel and apply a Belzona polymeric coating to protect against acid corrosion. The coating selected not only had to withstand the corrosion properties of the acid but also had to withstand high operating temperature of up to 100°C. While protective coatings can be successfully used at moderate temperatures, migration through the coating readily occurs at temperatures above 90°C. This gives rise to blistering and premature breakdown. We proposed to apply Belzona 1392 ceramic HT metal to the scrubber by combing a unique blend of inorganic erosion resistant reinforcing agents with a radically new densely cross linked heat resistant polymer. Belzona 1392 provides excellent protection against erosion and corrosion in high temperature environments which has a temperature range -40°C (-40°F) to 200°C (392°F) and a constant immersion temperature of 120°C (248°F). The internal of the unit, external of the nozzles and also all internal welds were grit blasted. All wetted parts were then coated with a two coat Belzona 1392 HT Metal. On completion all coated areas were wet sponge tested to check for defects. The external of the scrubber was spray painted hammerite grey prior to being packed ready for dispatch. The above unit was carried out during the customers scheduled breakdown period and was carried out over a five day period. The scrubber is now in operation and under trials. Completion of coating / Prior to despatch Quotations Estimator Email: ssmith@pumpgroup.co.uk Direct No: 0161 864 5176

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