There’s been a sharp spike in radiation levels measured in the pipes and containers holding water at the crippled Fukushima Daiichi nuclear plant in Japan.

But the company in charge of cleaning it up says that only a single drop of the highly contaminated water escaped the holding tanks.

Tokyo Electric Power Company said it is confident it can provide safety for workers dealing with the problem.

‘We will find out the cause of this issue and make proper counter measures immediately, and continue to make every effort to secure safety of workers,’ the company said in a statement released Sunday.

TEPCO found high radiation readings at the contaminated water storage tanks and pipe Saturday. The four locations are the bottom of three tanks and a pipe connecting tanks in separate area.

The highest reading as 1800 millisieverts per hour at the bottom fringe of the tank. 220 and 70 mSv were measured at the bottom of other two tanks. And TEPCO said they found a dried stain under the pipe with 230 mSv/h radiation measurement.

One drop of liquid fell when a staff member pressed on insulation material around the pipe. But TEPCO said no contaminated water leak is expected as there were no change […]