North Anna's licensing design basis is 0.12g (peak ground force acceleration) at 100 Hertz (Hz). However, Dominion notes that the plant's design accelerations are significantly higher than 0.12g in the critical range of 2 Hz to 10 Hz, where most earthquake damage is likely to occur. Instruments at the plant indicated that vertical and horizontal motion "very briefly" exceeded 0.12g in the 2Hz to 10 Hz range - by some 12% on average in horizontal direction and by about 21% on average in the vertical direction. The entire earthquake lasted for some 25 seconds, but the peak motion lasted only 3.1 seconds, Dominion said. ,,,,,,,,,,, http://www.world-nuclear-news.org/RS-Minimal_earthquake_damage_at_North_Anna-0909114.html No Spark, i no longer go to BPE1, how do you find it when you go there? .................. 2011 03 11 - 1970 01 01 D/W: 342Sv/h 、S/C: 0.691Sv/h " Deafenning Silence " !!! http://atmc.jp/plant/rad/?n=1 Sun Sep 4, 2011 8:20 AM EST .................. http://eagleaverro.newsvine.com/_news/2011/05/19/6678872-what-is-evolution-and-what-defines-a-religion?pc=25&sp=25&threadId=3138692#discussion_nav