At Fukushima Daiichi Nuclear Power Site (Hereafter, it will be referred to as “1F”), which experienced a severe nuclear accident, new radiation measurement technologies were introduced to cope with changing situations and harsh environments. This has led to improvements in the quality of radiation measurements and a reduction in the burden on the site. On the other hand, it showed that there are needs that cannot be met with current technology. While efforts within our company are a prerequisite, we have asked external experts for cooperation on new technologies that our company cannot create.