There is a variety of units existing in the Egyptian Iron & Steel Complex In Helwan area that has been installed in several steps, during a period of two decades. Different suppliers and companies took part in the...
There is a variety of units existing in the Egyptian Iron & Steel Complex In Helwan area that has been installed in several steps, during a period of two decades. Different suppliers and companies took part in the delivery, erection, and putting into operation of production and auxiliary components of the plant. This situation created difficulties in maintenance, spare parts availability, also some problems in the programming for preventive maintenance duties. In this paper, an information system was developed and adapted to suit the local conditions with the aim to control maintenance viork spare parts production in the local workshops, and to have an inventory control over spares and consumption materials. Such a system was developed taking into consideration the relations between dependent shops, loading of adjacent shops, besides, looking after safe stock level of spares without overloading the economy of the plant. The success of such a system depends upon data collection, continuous information flow from different prcduction shops, and is mainly dependent on people monitoring the system and the efficient computer centerin the plant.
Fast valving could cause second swing instability in a relatively weak system, though it is effective on first swing stability. This paper presents the proposed control methods for fast valving which are concerned wit...
Fast valving could cause second swing instability in a relatively weak system, though it is effective on first swing stability. This paper presents the proposed control methods for fast valving which are concerned with a practical way to control turbine power according to a fault severity and demonstrates their effectiveness by detailed digital simulations performed on a multimachine system.
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