Sentences with phrase «damaged reactor building»

Then workers removed debris from atop the damaged reactor building.

Not exact matches

The explosions tore open reactor buildings, damaging the 12 - meter - deep pools where used nuclear fuel is kept cool, potentially setting off another meltdown in the fuel there as the surrounding water drained away or boiled off.

As NRC staff noted during the Fukushima emergency, when there was concern that the spent - fuel pool at Unit 4 may have lost its cooling water as well as been damaged by the reactor building explosion, adding cold water to already hot fuel can create a problem in its own right.

In the early days of the crisis, engineers were desperate to learn about the damaged reactors» cores and the radiation levels inside the buildings, data that robots should have been able to provide.

As of 10 P.M. local time on Thursday, the JAIF listed the following status of the six Fukushima Daiichi reactors: • Buildings around reactor Nos. 1, 3 and 4 were «severely damaged»; the building housing reactor No. 2 was «slightly damaged»; • Cooling was not working for reactor Nos. 1, or 3; • Water levels were covering more than half of the fuel in reactor No. 2; reactor Nos. 1 and 3 water levels were covering only about half of the fuel.

But the greatest damage to the complex, and the greatest release of radiation, may have been caused by explosions of hydrogen gas that built up inside some of the reactors.

The buildings housing reactors Nos. 1, 2, 3 and 4 have all suffered damage from hydrogen explosions, caused by the high - temperature, high - speed interaction of fuel rods and steam.

Three reactors — Units 1, 2, and 3 — sustained severe core damage, and three reactor buildings — Units 1, 3, and 4 — were damaged by hydrogen explosions.