In for a nickel, in for a mine
A nickel mine in the Dominican Republic has changed its policy of reducing output during the maintenance period of its existing power plant and instead opted for a rental option from Cummins to maintain its production.
The Falcondo nickel mine produces more than 28 000 tonnes of nickel and ferronickel per year. The site includes a metallurgical treatment plant and a crude oil processor, both of which are powered by its three oil fired steam generators and three 66 MW steam turbines.
Cummins Power Rent supplied 32 gensets to supply 64 MW during maintenance on the mine’s thermal power plant
Each year, all the power units are shut down in turn for 14 to 21 days for inspection and maintenance. This has previously resulted in the mine operating at a reduced output. However, due to the increased global demand for its product Falcondo decided it was more beneficial to keep the mine working at full capacity by bringing in temporary rental power.
The mine rented 32 of Cummins’ 2 MW diesel generators for three months. Five of the trailer-mounted generators were used for peaking power and maintenance backups, while the remainder operated continuously at 1.6 MW.
Cummins completed the project from signing the contract to system start up in 45 days and also devised a system to reduce the time spent on oil changes from three hours to 45 minutes.
LCH scores with its arsenal
LCH Generators has supplied two 350 kV generator sets to provide mains independent power during the construction of Arsenal Football Club’s new 60 000 seat stadium.
The generators, each housed in modular acoustic enclosures, were hired for nine months providing power for the tower cranes being used by contractors Sir Robert McAlpine. The contract hire service provided by LCH includes full maintenance and access to a round-the-clock emergency call out team.
Arsenal’s new world-class stadium complex, being built on a 17-acre site in London, is scheduled for completion in time for the start of the 2006/07 football season
LCH is also providing generator sets for another landmark build in the UK. The country’s largest generator hire specialist has supplied six three-phase diesel generators rated from 60 kVA to 300 kVA to provide temporary power for Skyline Central, a luxury apartment project being built in Manchester. The generators are again each housed in modular acoustic enclosures and are meeting all the construction site’s power needs.
Aggreko keeps cool
A concrete batching plant in the Tengizchevroil Oilfield in western Kazakhstan will now be able to operate at maximum capacity all year round after Aggreko was contracted to supply a power and temperature control package.
Kazakhstan’s climate varies dramatically across the country throughout the year. In the Tengiz region, January winter temperatures can reach as low as -40°C, and in July the temperatures often reach +40°C. At the PFD batching plant in Tengizchevroil, the process water stored inside can reach almost 40°C over the summer months. In previous years the plant would shut down over the warmer months, but this year, Aggreko was contracted to provide a cooling solution.
The temporary power provider mobilized a chiller package by airfreight from its base in the United Arab Emirates to Atyrau in Kazakhstan, which was then transported by road to the concrete plant. The chiller package provided uses two heat exchangers to cool the plant process water from 30°C to 4°C.
The power and temperature control package was to be installed for four months, or until the weather has cooled to workable levels.
Cat’s perfect solution for Belgian hospital
The St. Elizabeth hospital in Turnhout, Belgium has recently undergone a major renovation and expansion, requiring a complete redesign of its existing power conditioning and backup power system.
Engineering contractors SDKE charged Cat dealer Treco Energy Systems to provide a solution that would protect the hospital from power failures, micro and macro outages, voltage sags and surges, and utility harmonics pollution, all of which could affect critical medical equipment.
Cat’s 3508B diesel generator set is providing back up power and enabling peak shaving at a Belgian hospital
Treco designed a system to deliver the required 1620 kVA of power support that utilized a Cat 3508B diesel generator set and a Cat UPS 1000 kVA. The UPS system was the first four wire 1000 kVA 50 Hz unit to be installed in the world.
The UPS and generator set are connected by a custom designed 1600 A motorized transfer switch, which is regulated by a DEIF AGC controller. This controller permanently monitors the utility’s power voltage for abnormalities and has the ability to both start up the genset and switch the UPS unit’s input over to it in the event of a complete power outage. It also enables peak shaving during sporadic instances of high power consumption by allowing the genset to supply power instead of the utility.
Producers of tomatoes, cucumbers, flowers and paprika in the Netherlands will soon be increasing production after installing 13 Rolls-Royce gas engines to produce electricity and heat for their greenhouses.
The cogeneration plants will also bring environmental and economical benefits. CO2 from the engines’ flue gases will be used in the greenhouses to create the correct environmental balance to increase the production rate of the fresh products.
When the plants are not providing power, the owners will use the heat and CO2 while selling the electrical power back to the grid.
Rolls Royce breaks into the horticulture industry with the latest version of its successful K-gas engine
“This is an important first sale into the greenhouse horticulture industry of the Netherlands and the scope for more business is significant”, said Bjørn Thorbjørnsen, vice-president of marketing of the Rolls-Royce diesels power business.
Rolls-Royce has designed the cogeneration plants to operate as stand-alone units at the grower’s site as well as in parallel with the national grid. The expected operation is between 5000 and 6000 hours per year, depending on the types of products being produced.
The 13 plants will generate over 36 MW of electrical power and 43 MW of heat for seven locations.