[1A04-07] Instrumentation and Control

[1A07] Development of a recover device for loose parts in liquid sodium

Basic test of the recovery mechanism unit

*Takahiro Ishiguro¹, Syushi Hattori², Tsukasa Hattori², Takuma Shirahama³, Masashi Ueda¹ (1. Japan Atomic Energy Agency, 2. HATTORI IRON WORKS, 3. NESI Inc.)

Keywords:Sodium Cooled Fast Reactor, Under Sodium Viewing, Remote Maintenance Technology, Loose Parts

In sodium cooled fast-reactors, opaque and highly chemical reactive sodium is used as coolant. Therefore, in the event of a loose part (dropped part) occuring, it is difficult to search and recover them under liquid sodium, potentially stopping the plant operation for a long time.
The paper presents a prototype of the recovery mechanism, which is an important component of recover device for loose parts, and reports measuremets and testing of it in liquid sodium.