Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Hitachi Ltd
Original Assignee
Hitachi Ltd
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Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP8513276ApriorityCriticalpatent/JPS5311299A/en
Publication of JPS5311299ApublicationCriticalpatent/JPS5311299A/en
PURPOSE: To reduce the quantity of filter to be exchanged by means of deviding a filter for treating radioactive waste gas into plural number parts and of exchanging in turn thereof.