Robots Assisting Decontamination at Fukushima Nuclear Site Keep Dying

Toshiba Corp.'s small robot, co-developed with the International Research Institute for Nuclear Decommissioning (IRID), operates during a demonstration at Toshiba's Keihin Product Operations in Yokohama, Kanagawa Prefecture, Japan, on Tuesday, June 30, 2015. Toshiba unveiled the robot which was developed for the investigation of Primary Containment Vessel (PCV) interiors of Unit No.2 at Tokyo Electric Power Co.'s (Tepco) Fukushima Dai-ichi nuclear power plant. Photographer: Kiyoshi Ota/Bloomberg via Getty Images

Toshiba Corp.’s small robot, co-developed with the International Research Institute for Nuclear Decommissioning (IRID), operates during a 2015 demonstration at Toshiba’s Keihin Product Operations in Yokohama, Kanagawa Prefecture, Japan. (Kiyoshi Ota/Bloomberg via Getty Images)

Bloomberg via Getty Images

The site of the 2011 nuclear disaster in Japan has left behind an unusual casualty — robots.

Officials leading the efforts to clean up 600 tons of nuclear fuel told The Associated Press a more creative approach to developing machines was needed, after yet another robot failed on Thursday last week.

Tasked with assessing the condition of melted fuel rods, robots are relied upon because radiation levels are too high for human workers to function. However, that’s proven to be just as deadly for the machines as well. In February, a scorpion-like probe built by Toshiba broke down while exploring reactor core No. 2, where the meltdown occurred, after reaching its radiation limit in under two hours, Japan Times reports. That’s just a fifth of the time it was expected to last.

In this handout image provided by Tokyo Electric Power Co, workers remove nuclear fuel rods from a pool at No. 4 reactor of the Fukushima Daiichi Nuclear Power Plant on November 18, 2013 in Okuma, Fukushima, Japan. (Tokyo Electric Power Co via Getty Images)

According to CBS News, the Japanese power plant took its latest victim in less than a day after debris blocked the machine’s way. Two other robots failed their mission after one got stuck in a crevice and another found no signs of fuel after searching for six days, Japan Times reports.

See an example of a previous robot used at Fukushima below.