As a one of the requirements to introduce the Integrated Safeguards that IAEA and Japan agreedto Tokai Reprocessing Plant (TRP), IAEA required the introduction of Remote Monitoring (RM) forinspection equipments (surveillance cameras and NDA equipments) installed in the spent fuel pondat TRP. For the requirement, a lot of cost and longtime construction for the cabling were expectedbecause there is no necessary existing cable (LAN line etc.) for data transmission of RM in thespent fuel pond area. In order to resolve the issue, JAEA proposed the wireless LAN which canintroduce the RM by low cost in comparison with cabling to IAEA and proved the communicationcould be performed absolutely on the basis of performance test of various performance tests, suchas prolonged continuation communication. As a result, it was recognized that wireless LAN hasenough ability to communicate for long periods of time. Consequently, the IAEA installed accesspoint (AP) and an external antenna to each inspection equipment and the wireless LAN technologywas applied for RM. For the wireless LAN technique for the RM, JAEA could get an approval fromthe IAEA through the some field tests. TRP is the first facility in Japan for application of wirelessLAN technique to several Containment and Surveillance (C/S) systems.It is less expensive to install the wireless LAN system than cabling. And such system can beinstalled easily if communication conditions are properly confirmed in advance. Using virtualprivate network (VPN) for like this system may make it possible to extend the wireless LANtechnique to other facilities. The IAEA could lay the groundwork for the RM with the wireless LANtechnique which can be provided inexpensively, in a short time, with less impact tofacility/operators. This is the good example because we could overcome the subjects about the bothof communication difficulty and security. JAEA thinks that this technique is not only safeguardsadvantages as IAEA, but also this technique can be extended to other facilities or the remotemonitoring for temporary C/S system.
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