ANS 2.23:2016

This standard is a major update of ANS Standard 2.23-2002. It provides criteria that the owner of a nuclear power plant can adopt to prepare for, and respond to, a felt earthquake at his plant(s), including the need for plant shutdown, assessment of damage, and actions to determine the readiness of the plant to resume operation and to verify the long-term integrity of the plant. The criteria will be expanded to consider the severity of a felt and recorded earthquake as well as the level of any observed damage in defining a graded approach to determine the damage potential of an earthquake and the actions needed to demonstrate readiness of a plant to restart.