The cable trench there contains much more radiation than those in the other three
damaged reactor units.
Not exact matches
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.
Leaks of hydrogen from
damaged reactors at
units Nos. 1 and 3 is blamed for explosions at the tops of the outer, secondary containment structures, and an explosion within the No. 2 primary containment structure.
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.