Japanese government officials, said fukushima, miyagi and ibaraki prefecture in most of the radiation monitoring device after the March 11 earthquake and tsunami, once failure, lead to local governments unable to grasp the radiation data in the first time in response to the crisis.

Japan's kyodo news agency reported Wednesday, set in the plant and the second nuclear power plant around 23 all-weather radiation monitoring device, 22 about three hours after the quake stopped to transmit data to the local monitoring center.

The news agency quoted officials as saying that some of the monitoring device in the earthquake damage, some swept away by the sea, but failure is the main reason of the communication line fault and power outages after the quake. In addition, some monitoring devices have a spare satellite antenna, but the latter is damaged in the earthquake, led to the device to transmit data.

Miyagi facility around 7 radiation monitoring device, 4 after the failure in the remaining three once relied on satellite antenna in order, but after about 5 hours to complete failure.

Set up more than 40 radiation monitoring device in ibaraki prefecture in the east China sea for the second nuclear power plant and nuclear facilities in the surrounding neighborhood. These devices with backup battery support work to stop operation, after about 20 hours until 3 hours before power is restored. "Monitoring radiation levels near nuclear facilities is common practice," ibaraki prefecture radiation monitoring center a staff said, "but all the gear failure is a problem." Kyodo news agency quoted analysts as saying that in addition to the three counties of miyagi and fukushima, ibaraki, other nuclear facilities counties and cities of radiation monitoring system is also facing failure risk, need immediate trouble-shooting repair.