2014: Yet Another Year with No Incidents

As one of the UK’s largest Independent Rotating Equipment Specialists, Pump Group are called to assist clients with all manner of jobs both nationally & internationally. Due to the very nature of On-Site work, our technicians are often working in unfamiliar & hazardous environments, carrying out technically & physically demanding work. In the last 12 months alone our on site engineers have carried out the following varied site work assignments: Compressor Overhaul on F.P.S.O. in the Niger Delta, West Africa Reinstallation of Cooling Water Pumps for UK Power Station following repair & test by Pump Group Removal & Repair of 38 Tonne Sea Water Lift Pump for Power Station, Ireland Repair Contract for Main Inlet Valves for Hydro Electric Power Station, Ireland Ongoing Maintenance contract for personnel at Oil & Gas Refinery, UK Condition Monitoring & LASER Alignment Contracts on North Sea Platforms & F.P.S.O’s Vacuum Testing & Endoscopic Inspection on Rotary Equipment for Power Stations, South East UK Mechanical Seal Removal & Reinstallation Projects at Power Stations, UK Borehole Pump Removal & Installations across the UK Numerous Pump Removal & Installations for all industries across the UK Our site engineers have spent over 10,000 man hours last year working in demanding locations across the globe without any incidents. This achievement reinforces our company goal that Health & Safety of our personnel is number one priority at all times and our engineers can get the job done whilst working safely and professionally/proficiently.   For more information on our Site Services, please speak contact one of our Site Team on 0161 864 4678, or by email sales@pumpgroup.co.uk  

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Belzona Protects Trench From Acid Attack

The customer was experiencing problems within a 40 metre long trench near a tanker off-loading area. Tankers carrying both Sulphuric and Nitric acid were being emptied regularly, with small amounts of acid being spilled each time. This acid had corroded through large areas of the concrete floor and trench, and there was a danger of the acid corroding through the remaining concrete and contaminating the underlying soil & water table. One of our specialist engineers attended site to survey the problem, and concluded that the extremely hard wearing yet versatile range of Belzona Polymeric Coatings would be ideal for this scenario.  The ability to apply the Belzona polymer coatings cold and the fast curing properties were ideal for this situation. Once given the instruction to proceed by the customer and all of the relevant Risk Assessments and Method Statements had been approved, a team of our factory trained Belzona approved technicians attended site to carry out the repair. They cleaned the concrete using high pressure steam cleaners, removing all traces of acids and oils to ensure the Belzona product bonded to the concrete substrate. First the technicians used Belzona 4141 Magma Build, a concrete specific repair polymer, to rebuild the concrete back to the original profile, then applied 2 coats of 4311 Magma CR1, which is a high performance coating designed to withstand the most aggressive chemical attacks. The Belzona process took our 2 engineers 8 days from start to finish, which is a lesser period than how long it would have taken to concrete the damaged areas, which would have also needed 28 days to cure. The 4311 Magma CR1 has many times the chemical resistance of concrete, meaning that the Belzona repair will far outlast any traditional repairs that could have been used. For more information on how Pump Supply & Repair Group can utilise Belzona Coatings both in our workshop and on-site, please contact our Site Services Manager, Charles Lambley, on 07887 721900, or email him on clambley@pumpgroup.co.uk

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On Site Vacuum Testing

Vacuum Pump Testing, Condition Monitoring, Laser Alignment and Endoscope Inspection Recently Pump Supply & Repair Group were asked to attend the site of a Power Station in London to perform a vacuum test on two Nash pumps. In addition, our scope of work involved confirming the alignment the pump/motor using laser equipment, checking the vibration & bearing noise using condition monitoring equipment and inspecting the internal condition of the pump using an endoscope probe. Our testing procedure involves fitting orifice test flanges, each with 18 precision cut ‘test holes’. A vacuum test gauge is attached to the centre of the plate to record pressure during the blanking off of each test hole in turn.The performance of the pump was determined by the application of mathematical formulae using the results recorded. A graph is then produced comparing the performance with the OEM catalogue curve, as can be seen in this image. The graph shows that below 16″ Hg, the pump is performing at approx 90% of its original specification, however, above 16″ Hg performance detoreriorates rapidly, achieving only 36% at its duty point of 25″Hg. Further investigation using our endoscope probe revealed that there was significant disintegration and corrosion of the rotor vanes, particularly at the drive end of the pump. An example of this damage can be seen on the attached image, and this almost certainly contributed to the poor performance of the pump. Our laser alignment equipment indicated the pump to have remained in alignment in the vertical plane, however, it was marginally out horizontally: we proceded to ease the pump back into alignment, aided by the ‘live’ display given by our equipment which gives a continuously updated display of the alignment. The attached image shows the final alignment report.Our ultrasonic Condition Monitoring equipment indicated that vibration and bearing condition were all within accepted tolerances.Visual inspection also revealed on of the mechanical seals to be leaking. Our recommendation to our customer was to remove the pump from service as debris from the disintegrating rotor could enter the process causing damage throughout the system. Our overhaul of the pump would involve Belzona coating to protect surfaces liable to the effects of corrosion and using Belzona to rebuild the profile of the rotor. As a matter of course, bearings and mechanical seals would also be changed. For further information or to discuss any testing requirement you may have, please contact: Site … Continue reading

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Pump Group Site Work

We have fully equipped site service vehicles with trained technicians to carry out a wide range of activities

Posted in Featured Site Work