What's New in the 2015 Update

Changes to Web Site Content

This is the first year for a new trend update frequency. The schedule for performing component and system study updates is now every other year. The next update of these studies will be based on the 2016 calendar year. The loss of offsite power and initiating event updates are still done each year.

The parameters used in the SPAR models have been updated using data through calendar year 2015. This includes initiating event frequencies, component unreliabilities, component unavailabilities, common cause failure alpha factors, and loss of offsite power nonrecovery probabilities.

• Summary of Analyses and Significant Trends for 2015
  

Historical Update Summaries

• Whats New in 2014 (Summary of Analyses and Significant Trends for 2014)
  
• Whats New in 2013 (Summary of Analyses and Significant Trends for 2013)
  
• Whats New in 2012 (Summary of Analyses and Significant Trends for 2012)
  
• Whats New in 2011 (Summary of Analyses and Significant Trends for 2011)
  
• Whats New in 2010 (Summary of Analyses and Significant Trends for 2010)
  
• Whats New in 2009