PROBLEM TO BE SOLVED: To surely attenuate the leakage of electron beams (X-rays).SOLUTION: Outer and inner surface sterilization zones Z2 and Z3 are provided for sterilizing a container by irradiating the container with electron beams from the inside and outside of the container, respectively, while conveying the container along first to third turn lines L1 to L3 within first to third shield rooms R1 to R3. Fourth to sixth turn lines L4 to L6 are connected to an exit trap zone Z4 installed in third to fourth connection opening parts P3 to P4 of the inner surface sterilization zone Z3. Fourth to sixth shield rooms R4 to R6 are provided for accommodating the fourth to sixth turn lines L4 to L6, respectively. First to third inner peripheral shield S1 to S3 each comprised of a metallic shield are installed, respectively, along the inner peripheral parts of the first to third turn lines L1 to L3 of the outer and inner surface sterilization zones Z2 and Z3. Fourth and fifth inner peripheral shields S4 and S5 each comprised of a metallic shield are installed, respectively, along the inner peripheral parts of the fourth turn line L4 connected to the exit trap zone Z4 and of the fifth turn line L5 connected to the fourth turn line L4.COPYRIGHT: (C)2013,JPO&INPIT【課題】電子線(X線)の漏出を確実に減衰させる。【解決手段】第1~第3遮蔽室R1~R3内で第1~第3旋回経路L1~L3に沿って容器を搬送中に、容器の外側と内側からそれぞれ電子線を照射して殺菌する外面、内面殺菌ゾーンZ2,Z3を具備し、内面殺菌ゾーンZ3の第3-4接続開口部P3-4に設置された出口トラップゾーンZ4に、第4~第6旋回経路L4~L6を接続するとともに、第4~第6旋回経路L4~L6をそれぞれ収容する第4~第6遮蔽室R4~R6を設け、外面、内面殺菌ゾーンZ2,Z3の第1~第3旋回経路L1~L3の内周部に沿って、金属製遮蔽体からなる第1~第3内周遮蔽体S1~S3を設置し、出口トラップゾーンZ4に接続された第4旋回経路L4と、第4旋回経路L4に接続された第5旋回経路L5の内周部に沿って、金属製遮蔽体からなる第4,第5内周遮蔽体S4,S5をそれぞれ設置した。【選択図】図2
