Patent Number: 046831061
Section: claims

1. A wiring installation located in a nuclear reactor building containing a nuclear reactor vessel having a vertical axis provided with a cover for connection of electric devices of the nuclear reactor, comprising: (a) a plurality of layers of fluid tight conduits located substantially above said cover and disposed perpendicularly to the said axis of the reactor vessel, the conduits in each layer being substantially parallel to each other and the conduits in one layer being disposed at an angle to the conduits in another one of said layers,  (b) a plurality of first cables each extending from one of said devices and terminated with a first fixed connector located above said cover, those of the first fixed connectors which correspond to similar devices having similar positions,  (c) a plurality of second cables each associated with one of the first cables and each having  (d) means for supporting said second cables between the first fixed connectors and the second fixed connectors, and  (e) wherein each one of said first fixed connectors is associated with one of said lead-in connectors which opens into an adjacent one of said conduits, so that all the first sections each connecting one of the lead-in connectors to one of the first fixed connectors, and corresponding to similar devices, are of the same length, while the first sections corresponding to different devices are of different lengths. 2. An installation as claimed in claim 1, wherein a plurality of said devices are for redundancy of a given measurement, and the first fixed connectors relative to said redundant devices are associated with lead-in connectors carried by separate conduits. 3. An installation as claimed in claim 1, wherein all those third sections extending in the same direction from mutually parallel conduits are supported by the same bridge up to the same plate at a distance from the reactor. 4. An installation as claimed in claim 1, wherein the lead-in connectors associated with one of the conduits are disposed on lateral surfaces of the conduit and the lead-out connectors are at one of the ends of the conduit. 5. An installation as claimed in claim 4, wherein each of said conduits is divided longitudinally into two separate compartments each comprising one of the lateral surfaces and one of the ends of the conduit.