| 摘要 |
PROBLEM TO BE SOLVED: To provide a filtration filter which can reduce the volume of a waste to be treated and is suitable for treating primary cooling water of a pressurized water nuclear power plant. SOLUTION: In a filtration device provided, a filtration film structure 20 is connected to only an top supporting member 33 of a supporting frame body 30 and is installed so that, in such a state that a grated inner tube member 31, a grated outer tube member 32, and a bottom supporting member 34 are kept fixed in a filtration tower 110, the filtration film structure 20 is attachable and detachable separately from these three members. Therefore, when the pressure difference reaches a specified value, the filtration film structure 20 can be easily exchanged by pulling out the top supporting member 33 to detach the filtration film structure 20 and inserting a new filtration film structure 20 together with the top supporting member 33 in between a grated inner tube member 31 and the grated outer tube member 32 fixed in the filtration tower 110. Since the members constituting the supporting frame body 30 except the top supporting member 33 can be used as they are, both the cost of a filter 10 and the volume of a radioactive waste can be decreased. COPYRIGHT: (C)2005,JPO&NCIPI
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