The situation at Japan’s quake-damaged nuclear plant remains very serious, the head of the UN atomic agency said on Monday.
But Yukiya Amano said he had “no doubt the crisis would be effectively overcome.”
Enginners have reconnected power cables to all six reactors at the Fukushima plant to reactivate their cooling systems.
While there appears to have been no rise in radiation levels, fears for the health of local people remain.
There are worries that food products and water supplies have been affected.
The earthquake and tsunami are now known to have killed at least 8,450 people, with some 13,000 still missing.