Abstract: An apparatus for diagnosing failure of a plant is provided. The apparatus for diagnosing failure of a plant includes: a data analyzer configured to provide data analysis information, which is information requiring analysis to diagnose failure of the plant, and a comprehensive diagnostic device configured to diagnose the failure using each of an algorithm-based diagnosing technique and a domain knowledge-based diagnosing technique based on the data analysis information, and to derive comprehensive diagnosis information for the failure by summarizing results of the algorithm-based diagnosing technique and the domain knowledge-based diagnosing technique.

Abstract: The present invention presents a ring assembly 1 disposed radially outwardly of an array of circumferentially arranged blades 38 of a gas turbine engine rotor R. The ring assembly 1 includes ring segments 2 disposed circumferentially one adjacent to another and having a first circumferential end 2a and a second circumferential end 2b circumferentially spaced apart from each other. The first end 2a of a ring segment 2 and the second end 2b of an adjacent ring segment 2 of the plurality of ring segments 2 are arranged facing each other. An integrally formed projecting seal part 92 is formed at the first end 2a. An integrally formed receiving seal part 94 is formed at the second end 2b facing the first end 2a. The receiving seal part 94 receives the projecting seal part 92 to form a mating connection between the ring segment 2 and the adjacent ring segment 2. A gas turbine engine including the ring assembly 1 is also provided.