Long-life Local Power Monitor (LLPM) LLPM is pasted the inner surface wall of fission ionization chamber with 234U and 235U. 234U is converted to 235U with absorption of neutrons and compensates consumption of 235U.

Noble Gas Hold-up System A system to adsorb radioactive noble gases in gaseous waste to decay their radioactivity, the system was developed in Fugen and employed in LWRs(BWR) in Japan.