“…The biological shielding of the TC is completed by the shielding plugs and shielding walls which provide sufficient protection to the surrounding rooms and cells [11]. The shielding plugs include an upper shielding plug (USP), a lower shielding plug (LSP), six piping and cabling plugs (PCPs), and three interface shielding plugs (ISPs) [9,10]. The complete interior surfaces of the TC are covered with stainless steel liner which provides together with the upper cover plate a vacuum tight envelop as well as a second barrier for lithium loop [10] to avoid contact between lithium and concrete in case of accidental spill.…”