Fukushima reactor door to opened for cooling system installation

The operator of Japan’s crippled Fukushima Dai-ichi nuclear plant is preparing to open a door of a reactor building to allow workers to install a cooling system and equipment to prevent an explosion.

Tokyo Electric Power Co said radiation that will be released by ventilating the Unit 2 reactor today will be too small to threaten human health.

Meanwhile, more radioactive water is pooling at the tsunami-hit nuclear plant as workers scramble to restart a key clean-up system.

It was shut down on Saturday, hours after beginning full operations, because a component reached its radioactivity limit faster than expected.