| 摘要 |
<p>A head (28) for closing a nuclear reactor pressure vessel shell (24) includes an arcuate dome having an integral head flange (38) which includes a mating surface (44) for sealingly mating with the shell upon assembly therewith. The head flange (38) includes an internal passage (52) extending therethrough with a first port (52a) being disposed on the head mating surface (44). A vent line (30) includes a proximal end (30a) disposed in flow communication with the head internal passage (52), and a distal end (30b) disposed in flow communication with the inside of the dome for channeling a fluid therethrough. The vent line (30) is fixedly joined to the dome and is carried therewith when the head (28) is assembled to and disassembled from the shell (24).</p> |
