What's New in the 2018 Update

Changes to Web Site Content

Starting from the 2016 Update, the schedule for performing component and system study updates is every other year, while the loss of offsite power and initiating event updates are still done each year. As such, the 2017 Update includes only the studies for loss of offsite power and initiating event, which are based on the data through calendar year 2017. This update (i.e., the 2018 Update) includes the studies for loss of offsite power, initiating event, component, and system studies using data through calendary year 2018.

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 2018
  

Historical Update Summaries

• Whats New in 2017 (Summary of Analyses and Significant Trends for 2017)
  
• Whats New in 2016 (Summary of Analyses and Significant Trends for 2016)
  
• Whats New in 2015 (Summary of Analyses and Significant Trends for 2015)
  
• 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