Abstract: The invention relates to method and device for generating and publishing a railway signaling diagram comprising a track diagram of a railway network and track equipment arranged on the network portion, each piece of track equipment comprising particular characteristics. One method of the invention comprises: (a) entry by a user of topological data of the portion of the railway network; (b) automatic generation by the computation means of a track diagram of the portion of the railway network from topological data; (c) selection by the user of a plurality of rules for positioning track equipment to be arranged on the railway track diagram, and (d) automatic generation by the computation means of the railway signaling diagram of the portion of the network from selected rules for positioning the track equipment and the railway diagram. The invention also relates to a device adapted to carry out the preceding method.

Abstract: The invention relates to method and device for generating and publishing a railway signaling diagram comprising a track diagram of a railway network and track equipment arranged on the network portion, each piece of track equipment comprising particular characteristics. One method of the invention comprises: (a) entry by a user of topological data of the portion of the railway network; (b) automatic generation by the computation means of a track diagram of the portion of the railway network from topological data; (c) selection by the user of a plurality of rules for positioning track equipment to be arranged on the railway track diagram, and (d) automatic generation by the computation means of the railway signaling diagram of the portion of the network from selected rules for positioning the track equipment and the railway diagram. The invention also relates to a device adapted to carry out the preceding method.

Abstract: The invention relates to an inductive thermal plasma torch comprising a confinement tube that comprises, longitudinally in relation to the tube, metal fingers which are insulated from each other, an ignition device that comprises an igniter (4) and an igniter support (1, 3), the purpose of the igniter (4) being to initiate a discharge in the plasma of the torch, the support having an electrically conductive end (1) which is connected to the electrical earth (2) of the plant and another, electrically insulating, end (3) which carries the igniter, the ignition device also comprising an electrically conductive connection (5) connecting the igniter (4) to the electrically conductive end (1) of the support so that the igniter is able to initiate the discharge in the plasma, the electrically conductive connection (5) having a section that is sufficiently narrow to limit the intensity of the current capable of passing through the igniter (4) in order to avoid electrical arcing by capacitive discharge between the ign

Abstract: The invention relates to an inductive thermal plasma torch comprising a confinement tube that comprises, longitudinally in relation to the tube, metal fingers which are insulated from each other, an ignition device that comprises an igniter (4) and an igniter support (1, 3), the purpose of the igniter (4) being to initiate a discharge in the plasma of the torch, the support having an electrically conductive end (1) which is connected to the electrical earth (2) of the plant and another, electrically insulating, end (3) which carries the igniter, the ignition device also comprising an electrically conductive connection (5) connecting the igniter (4) to the electrically conductive end (1) of the support so that the igniter is able to initiate the discharge in the plasma, the electrically conductive connection (5) having a section that is sufficiently narrow to limit the intensity of the current capable of passing through the igniter (4) in order to avoid electrical arcing by capacitive discharge between the ign

Abstract: The device includes a blade (1), one end of which carries a testing probe (2). The probe (2) includes a first ultrasonic transducer (23) constituting an emitter and a second ultrasonic transducer (24) constituting a receiver, which are pivotably mounted at the end of the blade (1) about two axes parallel to the longitudinal direction of the blade (1), arranged separated from one another in the transverse direction of the blade (1), so as to be placed in a narrow annular passage, in contact with a cylindrical wall to be tested, in two positions separated from one another in a circumferential direction of the annular passage.

Abstract: The process comprises the steps of calculating, by varying the opening angle of a cluster, a first group of reference points of x, z coordinates in an incidence plane of the beam, so that the times taken by the ultrasounds to pass through the reference points and through the focal point are identical, then calculating a second group of reference points of y, z coordinates in a plane perpendicular to the incidence plane, defining two polynomials of degree 4 by polynomial interpolation by the method of least squares of the two previously calculated groups of points of the following form: f(x)-ax.sup.4 +bx.sup.3 +cx.sup.2 +dx g(y)=a'y.sup.4 +b'y.sup.3 +c'y.sup.2 +d'y, determining the x, y and z coordinates of the points of the output surface by the relation z=f(x)+g(y), and producing the output surface by means of the coordinates.