| 摘要 |
PURPOSE:To facilitate management of pressure reduction, by a method wherein, after receipt of signals from a pressure detector and a key board, which inputs name information, pressure reducing precedure information is sent to a display unit, and when pressure reducing operation is not effected in the order of procedure, an alarming means is actuated. CONSTITUTION:A manually-operated pressure reducing valve 4 is mounted to a man lock chamber 1, a control device 9, which exchanges data between a control panel unit 10 and the control device, is located outside the man lock chamber 1, and a pressure sensor 6 is situated to a working chamber 3. A key board part 11, which inputs name information when a worker enters and exists a caisson, and a display part 12, which displays pressure reducing work information and state information on various pressure reducing controls, are provided. The control device 9 receives signals from a pressure sensor 6 and the key board 11 and sends display information to the display part 12, and when pressure reducing control is not effected according to pressure reducing procedure, an alarming means in the man lock chamber 1 is actuated. |
