OMRON regularly inspects transformers, power capacitors and fluorescent lamp ballasts, which contain polychlorinated biphenyls (PCBs), stored at each site to make sure proper management of these devices. Devices containing a high concentration of PCBs are scheduled to be disposed of by fiscal 2010. In fiscal 2006, as low-concentration content of PCB was detected during disposal of transformers, an investigation surveyed devices that are likely to use PCBs all at once across OMRON sites in Japan. The investigation revealed that some of devices once claimed to contain PCBs in high concentration actually had PCBs in low concentration or no PCB at all. But some devices were newly found to contain PCBs in low concentration. Moreover, a high-voltage capacitor once included in the PCB-containing device list was found to contain no PCB. The survey results have already been reported to the relevant municipal government.

PCB-containing Devices Stored (in Japan)

• Amount of stored PCB