Device for protecting access opening of water tank of e.g. vapor generator in nuclear power plant against scratches, has central part comprising ends with annular edges maintained on inner and outer walls of access opening, respectively

摘要

The device has a sleeve (10) placed in an access opening and comprising a central part (11) whose shape e.g. cylindrical shape, is complementary to that of the access opening. The central part comprises ends provided with annular edges (12) maintained on inner and outer walls of the access opening, respectively. The sleeve is made of a flexible material that is resistant to temperature in the order of 80 degree Celsius.