公开(公告)号：WO2020016566A1

公开(公告)日：2020-01-23

申请号：PCT/GB2019/051979

申请日：2019-07-16

Applicant: THE UNIVERSITY OF LIVERPOOL

Inventor： MERK, Bruno ,  LITSKEVICH, Dzianis ,  ATKINSON, Seddon

IPC: G21C1/07 ,  G21C7/26 ,  G21C3/326 ,  G21C5/12 ,  G21C11/06

Abstract: A high temperature reactor (HTR) (100) is described. The HTR (100) comprises a first set of fuel columns (110), including a first fuel column 110A, comprising fissile fuel (120). The HTR (100) comprises a second set of burnable poison rods (130), including a first burnable poison rod (130A). The HTR (100) comprises a moveable moderator (140). The HTR (100) comprises a passageway (150) arranged to receive the moderator (140) therein. The HTR (100) comprises a first reflector (160) arranged to surround the first set of fuel columns (110), the second set of burnable poison rods (130) and the passageway (150). The HTR 100 is arrangeable in a first configuration C1, wherein the moderator (140) is received in the passageway (150) in a first position P1 thereby providing a first moderation M1 of neutrons produced by the fissile fuel (120). The HTR (100) is arrangeable in a second configuration C2, wherein the moderator (140) is received in the passageway (150) in a second position P2 thereby providing a second moderation M2 of the neutrons produced by the fissile fuel (120), whereby a change in criticality, in use, due to depletion of the fissile fuel and/or of the burnable poison rods (130) is attenuated.