METHOD AND DEVICE FOR REMOTE SURVEILLANCE FOR MANUAL VALVES OF LIQUID CIRCUITS, FOR EXAMPLE, IN A NUCLEAR UNIT OF A NUCLEAR POWER PLANT

摘要

1. A method for remote monitoring of manual valves (15) of liquid circuits (10), for example, in a nuclear block of a power plant during its operation or its stops, characterized in that said valves are made with the possibility of manual control between an open position and a closed position, when this:! manual valves (15) are equipped with means (31) for detecting their open or closed position and with first communication means (32) for wireless transmission of signals about the open or closed position of each valve (15),! in the room where the said valves (15) are located, the second communication means (35) are installed to receive and transmit signals transmitted by the first communication means (32),! outside the specified room, local wired networks (36, 38) are located to transmit signals received by the second communication means (35) through thick walls impenetrable for signals transmitted by wireless transmission, and! in the control room outside the said rooms, means (40) for receiving and processing signals are installed after the signals have passed through these walls. ! 2. The method according to claim 1, in which the first means (32) of communication of each gate (15) are switched on by means of transmission, activation and request associated with the means (40) of receiving and processing, and the means (31) of detection, transmitting to the first communication means (32) data on the open or closed position of each valve (15), and by means of the said first communication means (32) transmit signals about the open or closed position of each valve (15). ! 3. A method according to claim 1 or 2, in which the receiving and processing means (40) are connected directly to the wired networks.