Antonelli, Terry & Wands
Piping of nuclear reactor containment vessel
 Piping of a nuclear reactor containment vessel comprises pipes passing through the containment vessel and, extending to the outside of the containment vessel, outer shut-off valves each provided at a portion of the pipe which is located at the outside of the containment vessel for closing the pipe and isolating vessels for covering at least outer surfaces of welded portions of the pipes each being located between an outer wall surface of the containment vessel and a portion including the outer shut-off valve and for isolating the covered portions of the pipes from atmosphere. 
Hitachi, Ltd.
Y G G G
Y02E G21C G21C G21C
additional inventional inventional inventional
Kunio Tetsuo Hisao Tasuku
Hasegawa Horiuchi Ito Shimizu