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90-MW diesel power plant chosen for Middle East

90-MW diesel power plant chosen for Middle East

MAN B&W is a major supplier of diesel engines for stationary power generation. Its diesel generating sets range from 500-kW emergency power generating units used for small-scale factory applications up to 150-MW turnkey diesel power stations serving regions not covered by a national grid system. The world?s first large-scale diesel power station was built in the city of Kiev, Ukraine. This station had six MAN four-cylinder, four-stroke engines.

In view of the further increasing demand for cement, Yanbu Cement Co. (Jeddah, Saudi Arabia), decided to increase the capacity of its cement works (in Yanbu on the Red Sea) from its current 3,500 tons per day to 7,000 tons per day.

The order for increasing the capacity of the cement plant was placed with KHD Humboldt Wedag, constructors of the original plant. Because of the cement plant?s needs for large amounts of electric power and also because the plant is situated away from any public supply system, the owners decided to construct an on-site power station. Because of the need for reliability and economical cost, the cement manufacturer?s consultant recommended a diesel power station be installed.

The plant will utilize eight diesel generating units operating at a speed of 400 rpm. Each of the diesel?s generating units will generate 11.7 MW. In addition to supplying the diesels, MAN B&W Diesel AG (Augsburg) is also responsible for the design and delivery of the power station auxiliaries, as well as for assembly supervision and commissioning of the plant.

On account of the site conditions (extreme ambient temperatures, salt-laden air, sandstorms and cement dust), the Augsburg planning department was faced with many challenges in not only designing the plant and its equipment, but also in selecting construction materials. The Augsburg planning department is also responsible for civil engineering and the construction of the cement

manufacturing facility and the power station building.

As the power supply is urgently required, delivery of the equipment commenced in spring 1995 and was completed by the end of May 1995. In order for the cement plant to run its acceptance tests, the first three diesel generating units must supply power to the cement plant by Dec. 1, 1995. Full commercial operation of the power plant is scheduled for March 1996.

The power plant project will have a total output of 93.6 MW and is one of the largest power projects to be planned, supplied and commissioned by the Augsburg works.

The largest diesel power station in the People?s Republic of China

In less than 24 months, the utility company of Foshan City in China?s southern Guangdong Province commissioned 15 diesel-generating units with a combined output of 179 MW. These units constitute the backbone of Foshan Power Station, the largest diesel power station in the People?s Republic of China.

Each of the 15 medium-speed engines, manufactured by MAN B&W Diesel AG, drives a Siemens three-phase synchronous alternator. The first six units were commissioned 12 months after the order was placed. The prime mover is MAN B&W?s 9L 58/64-type diesel engine, a state-of-the-art engine featuring the latest technology. The diesel engine and the single bearing alternator are rigidly coupled and mounted on a concrete foundation block. A self-cleaning centrifuge is used for the lubricating oil system.

The heavy fuel oil system has its own self-cleaning centrifuges, automatic back-wash filters and electronic viscosity control devices. Steam for heating the heavy fuel oil is supplied by exhaust gas boilers. Air for combustion first passes through rotary oil-bath filters, sound absorbers and then into the engine. In order to reduce installation and commissioning time and costs, the engine auxiliary systems were constructed in modules.

Local manufacturers supplied the ventilation systems, tanks and piping. All of the locally fabricated parts were manufactured to MAN B&W design specifications.

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