Maintenance for ventilation system of The Tokai Reprocessing Plant

Kawasumi, Hiroyuki; Takeuchi, Kenji ; Domura, Kazuyuki; Sanyoshi, Hirotaka; Inami, Shinichi

The Tokai Reprocessing Plant has recovered nuclear materials from spent nuclear fuel. Reprocessing process is consisted of shearing process, a dissolution process and an extraction process etc. Each facilities designed to confine radioactive materials in controlled area to keep negative pressure using ventilation system. This system has been used over 40 years. We analyzed influences to the trouble of aging equipment, and we considered necessary additional check out system to prevent troubles based on the results of analysis. This reports describe the present status of this system.