Abstract
Due to huge energy of earthquake and followed big Tsunamis, "The Great East Japan Earthquake of March 11, 2011 caused serious damages to the whole country. And many companies not only in Tohoku area but also in the whole country had many troubles in their business operation for a longtime. The Reliability and Safety Workshop of JSQC was realized in its supporting activity of those troubled companies that quite a few companies foresaw risks to cause troubles to their business operation and took measures against the risks prior to this huge earthquake. And based on the measures, they made minimize of troubles due to this earthquake and could reopen in a short time after the earthquake. This report made several examinations on those companies why they could reopen their business operation in a short time and how to operate their BCM. And also this report examined to suggest a process and a system how to foresee risks those an assumed huge earthquake might cause troubles to their business operation and to prevent them from having those troubles.
