Abstract: Electronic equipment (12) for supervising valves (11) of a hydraulic circuit (10), wherein each valve (11) is movable between an open position and a closed position, includes a plurality of electronic devices for detecting changes in position (16), each being associated with a valve (11) and is configured to detect a change of position of the valve (11) between its open and closed positions, an electronic apparatus (18) for supervising the valves (11), and a system (20) for radio transmission of messages between each detection device (16) and the supervisory apparatus (18). The supervisory apparatus (18) is configured to calculate a sequence of successive changes of valve positions (11) from messages received from the detection devices (16) via the radio transmission system (20), to compare the sequence calculated with a predefined sequence, and to generate a signal as a function of the comparison.

Abstract: A method for manufacturing a treated optical fiber for a temperature sensor is provided. The method includes a) obtaining an optical fiber from pure silica or doped by one or more elements from among fluorine and nitrogen, b) imprinting, using a femtosecond laser, at least one Bragg grating in the optical fiber to obtain an imprinted fibe, the Bragg grating extending longitudinally in a portion of the imprinted fiber and being suitable for reflecting light waves propagating along the imprinted optical fiber, the laser having a power greater than or equal to 450 mW, and c) annealing at least the imprinted fiber portion to obtain the treated optical fiber.

Abstract: An acoustic sensor for measuring the linear movement of an internal structure of a nuclear reactor using sound waves, including: an electro-acoustic transducer capable of emitting sound waves; and a waveguide capable of guiding the sound waves emitted by the transducer toward a measurement area of the internal structure, wherein the waveguide is capable of guiding the reflected wave and the waveguide is secured to the measurement area and arranged so as to be capable of extending or retracting in accordance with the movement of the internal structure of the nuclear reactor.

Abstract: According to the invention, a mandrel, provided with tabs for holding jars containing powders and for turning the jars upside down in order to empty them through the neck, is equipped with vibration generators for exciting the walls of the jar in order to shake off the powder masses adhering thereto. The method is much more efficient than even more energetic shock applications, and frequency scanning can further be advantageously applied. One application relates to an emptying step in methods for the production of nuclear fuel pellets by powder agglomeration.