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These expensive electrical controls are very 1980's. Today, a computer screen could replace all of this. However, in control systems sometimes its better to just hardwire some functions to relays so that a programming error cannot crash the plant. These hardwired safeties are called "interlocks" and they are a must.
Visiting the desert of a lignite [german: Braunkohle] open-pit mining, also known as opencast mining and open-cut mining at Garzweiler (Google maps, scroll out). The whole city of Garzweiler was completely resettled from 1984 to 1989 to another place. After that, the excavators came to dig - the largest and heaviest vehicles in the world at 13,500 tons (see article at wikipedia.com here). It's like terraforming a planet. In the background you can see the Niederaußem lignite power plant, which blows such a huge amount of steam into the air, that in winter it will fall down to earth as so called "industral snow".
[ henning ]
Visiting the desert of a lignite [german: Braunkohle] open-pit mining, also known as opencast mining and open-cut mining at Garzweiler (Google maps, scroll out). The whole city of Garzweiler was completely resettled from 1984 to 1989 to another place. After that, the excavators came to dig - the largest and heaviest vehicles in the world at 13,500 tons (see article at wikipedia.com here). It's like terraforming a planet.
[ henning ]
The brown-coal mine to open sky of Garzweiler (Braunkohletagebau Garzweiler) is a site of extraction of Lignite, named according to the village of Jüchen-Garzweiler in the commune of Jüchen (Rhein-Kreis Neuss), located at ten kilometers in the south of Mönchengladbach, in Rhineland-of-North-Westphalia (Germany), and exploited by the company RWE Power AG. The village of Garzweiler was demolished, and the place then entirely cleared the extraction of the lignite parallel to, and became today - in particular in German the ecologists mediums - synonym of lignite exploitation with open sky. The lignite extraction undertaken by subsidiary company RWE Power AG of firm RWE AG (in the past Rheinbraun - lignite saying in German Braunkohle) took place up to now only in the first of the two sections envisaged, Garzweiler I and II. Garzweiler I includes/understands the extent located at the east of the highway A 44, while the exploitation site Garzweiler II corresponds to a sector in the west of has 44; this last, large of 48 km2, is definitely vaster. March 31st, 1995, the government of the Land of Rhineland-of-North-Westphalia gave its downstream to the implementation of the Braunkohleplan Garzweiler II . Also the general purpose excavators could, on June 18th, 2006, to start this new zone. Are concerned now, for the first time, and with 40 km2 height, of the portions of territory of the town of Erkelenz (Kreis Heinsberg). A third approximately of the surface of this city will be put at contribution. 6,5 km2 are located on the territory of the commune of Jüchen and approximately 1,5 km2 on the territory of the town of Mönchengladbach, which will be thus for the first time it so implied in this mining project. The period of extraction envisaged extends from 2006 at 2045. The breaking-down of the coal is carried out with open sky (exploitation into discovered or by discovered) and the activity are connected then with a project of earthwork which moves gradually. Garzweiler II has a brown-coal bed of 1,3 billion tons. The t/c report/ratio - which expresses the relationship between the quantity of cleared dead ground (i.e. the quantity of ground that it is necessary to release initially before reaching the coal seam) and the quantity of coal extracted -, is here of 5/1, which is favorable. The Garzweiler project requires the evacuation and the removal of whole localities. With regard to the project Garzweiler II, twelve villages and 7600 inhabitants will be touched.