All units were inspected after the 1978 Miyagi earthquake when the ground acceleration was 0.125 g ( 1.22 m\/s2 ) for 30 seconds , but no damage to the critical parts of the reactor was discovered .
All units were inspected after the 1978 Miyagi earthquake when the seismic ground acceleration was 0.125 g ( 1.22 m\/s2 ) for 30 seconds , but no damage to the critical parts of the reactor was discovered .