公开(公告)号：US4056434A

公开(公告)日：1977-11-01

申请号：US631650

申请日：1975-11-13

Applicant: Sidney Barnes ,  John Roderick Fothergill

Inventor： Sidney Barnes ,  John Roderick Fothergill

IPC: G01B17/00 ,  G21C17/02 ,  G21C17/08

CPC classification number: G21C17/08 ,  G21C17/02

Abstract: A liquid metal cooled nuclear reactor has scanning means whereby ultra sound is transmitted between a transducer unit and objects in the pool of reactor coolant by way of a liquid wave guide. The wave guide is created by drawing liquid metal from the pool of coolant into a dip pipe to submerge the transducer unit. The liquid metal is drawn up in two stages with a cooling period between the stages.