Thursday’s 7.4 ‘aftershock’ not only cut power to another nuclear plant, that was struggling to keep its reactors cool, now they have found more problems.

Tohoku Electric Power Company (not to be confused with Fukushima Daiichi’s Tokyo Electric Power Company), says they have discovered water leaks, and ‘blow off’ panels are damaged.

The blow off panels are part of a pressure relief system on Onagawa’s Reactor 3. The plant was using external power from three power lines, but the latest quake knocked down two of them. Tohoku Electric says they are maintaining cooling with the one power line.

Their inspections continue, and so far they are not picking up increased radiation levels.