| 摘要 |
The invention provides a method of maintaining a cell including a wall pierced by a cavity fitted with a monitoring or observation instrument, the instrument comprising a dome projecting into the inside of the cell, a protection shield, an observation sensor arranged between the dome and the shield, and a travel mechanism for moving the sensor between a position retracted inside the cavity and a deployed position. The method comprises the following operations: extracting the protection shield, the observation sensor, and the sensor travel mechanism out from the cavity, to the outside of the cell; where appropriate, replacing the observation sensor; inserting a replacement dome into the cavity and sliding it into the proximity of the dome that has remained in position in the cavity; inserting the protection shield, the observation sensor and the sensor travel mechanism into the cavity and sliding them into contact with the replacement dome; and moving the dome that has remained in position in the cavity until it is expelled into the inside of the cell, by pressing the replacement dome against the dome that has remained in position. |
