Refurbishing an ageing district heating system in Constanta, Romania using new hot-water recirculation pumps, associated variable speed drives and other controls in a demand-based arrangement, has resulted in an improved supply quality, plus an optimized, energy-efficient operation – all with greater reliability. 09 March 2010
A mineral wool production facility was on the lookout for a compressed air solution to integrate into its upgrade programme. The installation of a compressed air system from Atlas Copco fulfilled the company's need for energy efficiency while providing a net capacity more than sufficient to meet increased plant air requirements. 08 March 2010
In April 2008, a new world record height of 606 m for pumping concrete was set on the Burj Dubai Tower in Dubai. Bryan Orchard looks at the high pressure peristaltic or piston pump technology behind this level of performance and the contribution that it can make to the latest generation of high-rise building projects. 03 March 2010
When archaeologists discovered a haul of 16th century shipwrecks at a Norwegian building site, they realised that quick and efficient drainage had to be attempted to ensure both safe examination of the ships and timely completion of the building. A range of Tsurumi drainage pumps provided the answer. 02 March 2010
The population around Stockholm, Norway, is developing rapidly and new homes are needed. A range of hard-wearing submersible pumps have helped to transport contaminated water from a cable tunnel installed deep below Stockholm, making it possible to power a whole new generation of buildings for the growing city. 02 March 2010
Part of a massive sewers project in Northern Ireland requires the installation of dry well submersible pumps below ground. As the integrity of these depends on the performance of the primary mechanical seal, the solution uses a conventional mixed flow volute pump fitted with a packed gland. 25 February 2010
Pump consultant, Brian Nesbitt attempts to clarify the technical language used by pump engineers by explaining common terms used in conjunction with pump application and pump design. 23 February 2010
In this short series of articles, Rafael Ocampo examines the basic theory concerning fatigue, the influence of stress raisers on fatigue failure, and the steps to take to reduce fatigue failures. 23 February 2010
Two critical exhaust fans in an oil tanker were damaged, putting the ship out of action for two weeks and costing its owners around €60,000. A hand-held device used for the early detection of damage in rotating elements, such as roller bearings, soon identified the problem. 18 February 2010
More than 60,000 visitors attended this years Pinkpop Festival drawn by headline acts including Bruce Springstein, Depeche Mode and Franz Ferdinand. The three day annual rock event, held in the city of Landgraaf in the Netherlands, places huge demands on the temporary infrastructure built to support the clean water demands of the revellers. 18 February 2010
When Carpetright decided to amalgamate its distribution sites into one large warehouse, it needed to become fire compliant with minimum site traffic and a low risk of project delays. An off-site manufacture approach by Armstrong provided the answer and enabled the project to run more smoothly with less contractors onsite. 02 February 2010
When an Arizona power plant wanted to increase the capacity of pumps used to avoid the possibility of overflow, it was imperative the pumps be protected from the elements, making conventional solutions untenable. However, fluid handling consultancy, Quadna Inc, came up with the answer. 20 January 2010
An ethylene plant in Saudi Arabia needed to reduce thermal cycling time while maintaining the high level of cleanliness required to prevent damage of the turbine blades. SABSCO was able to achieve this goal in the hostile environment and in a short time frame, by utilizing the company’s Softstart technology. 06 November 2009
The Marmaray project, linking the European and Asian sides of Istanbul will be the world’s deepest immersed tube tunnel. The industry’s drive to create ever deeper tunnels has placed increasing demands on dewatering and construction equipment. Tsurumi rose to the challenge with its ‘puddle sucker’ LSC series. 06 November 2009
Despite the tight credit markets and challenging global economy, 2008 saw further consolidation within the pump sector. Listed below are the transactions that took place during the first and second quarters of 2008. Third and fourth quarter deals were published in the February 2009 issue of Pump Industry Analyst. Subscribers to Pump Industry Analyst have access to a 4-year archive on the website as part of their annual subscription. 03 June 2009
As our energy reserves dwindle while costs continue to rise and as the spectre of climate change looms ever larger, it becomes ever more imperative to take action on energy savings. Recent legislation is now making the route of no-action impossible. Danfoss' John Martin, strategic business area manager, HVAC put the case forward for intelligent inverter speed control of fans and pumps in buildings. 20 March 2009
A European office block was experiencing problems with its HVAC system. The answer was found by installing Variable Speed Drives that could be integrated with the new control system to improve ventilation management. 18 March 2009
In this article, Martijn Haan of Verder BV first considers the general construction and action of air operated double diaphragm (AOD) pumps, before discussing the particular advantages of plastic pumps for the safe handling of aggressive and toxic liquids. 05 March 2009
In the pumping industry, contractors often meet with difficult operating conditions, such as tunnelling deep underground or particularly abrasive pumping media. However, pumping in extremely cold conditions, such as near-zero temperatures, comes with its own particular risks. Stefan Hörnschemeyer of Tsurumi Pumps offers practical advice on what to do when the temperature drops. 05 March 2009
One of the things that often are crucial at a construction work site is the dewatering issue. Groundwater from surroundings as well as rain can flood the whole site if not dealt with properly. When digging below the water table, the amount of water entering the site from the surrounding can be quite large, but this depends on the environment. Ola Hällgren presents an introduction of the role of submersible pumps in controlling the water level. 05 March 2009
Until now, the choice between electric-driven or diesel-driven pumps for dewatering applications has not been an even contest. However, rising fuel costs have forced many engineers to re-consider their choice. Here, Roland Berns of BBA Pumps BV argues that in spite of the initial higher purchase price, diesel-driven pumps will pay their costs back many times over in fuel savings. 05 March 2009
The largest civil engineering project in Ireland entailed building a road tunnel under a roaring tidal river. The massive components had to be prepared in advance and floated into place. This involved moving thousands of gallons of water, so SPP Pumps were brought in to make the crossing possible. 02 March 2009
Large buildings are prone to enormous variations in their water use. Any new system would need to match these variations using the least amount of energy. Here's how the world's largest commercial building met this challenge with a system that will not only pay for itself on energy-savings, but will also pay the costs to replace itself in its lifetime. 02 March 2009
One of the more challenging applications for a pump is the hazardous conditions on an oil rig out at sea. A European oil and gas equipment manufacturer ensured that pump operators were safe by using a range of Bosch Rexroth products to remotely control its diesel engine-driven pumps. 02 March 2009
At the smelter of a platinum group metals producer in South Africa, a new pump was required to transfer highly abrasive materials and keep the slurry in motion during the processing of ore. The company decided to install three peristaltic pumps designed to withstand the demands and capacity of pumping slurries. 02 March 2009
Mining salt often leaves caverns that have to be filled to stabilize them once extracted. One method is to fill these caverns with tailings produced during the salt purification process. A hydraulic, quadruple-action piston membrane pump, ideally suited for abrasive liquid media, from ABEL was found to be the best solution to transport the packing from the hopper into the mine via a pipeline. 02 March 2009
Various wastewater treatment processes require the controlled dosing of chemicals into the process stream either to assist the treatment or to remove undesirable elements. In order for the dosing pumps to work efficiently, works operators need to be constantly aware of what is happening in the treatment process so that dosing levels and speeds can be adjusted accordingly. UK-based Partech Instruments has developed feed forward control systems employing on-line analysers in the inlet stream to send real-time data to a dosing control system for automatic adjustment of the dosing pump. Bryan Orchard reports. 02 March 2009
Rainwater leachate from metal and chemical industrial process waste is extremely dangerous and creates a highly inhospitable environment for pumps. Tsurumi supplied its cast iron KTZ pump range for transporting the highly corrosive liquid and matched the client's requirements for a lightweight and robust product. 02 March 2009
A construction site in the US required a five-month a dewatering project. When the banks of the final cut proved unstable and the project ran into problems, Thompson Pumps had to work fast to install extra pumps and solidify the excavation floor – which ensured a successful outcome. 24 February 2009
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