04/25/2012   Fission Stories #102 explains how an instrumentation problem caused workers to believe that the pressure inside the reactor vessel was decreasing when it was actually increasing, and rose to the point where an automatic shut down of the reactor was triggered.

02/01/2007   UCS explained the reason why operators manually scrammed the reactor after two pumps tripped. Download the pdf

02/2007   UCS chronicled the many missed opportunities spanning two decades that allowed testing of the emergency backup power supplies to use the wrong answer key.  See additional info

09/18/2006   UCS documented the factors leading to the year-plus reactor outage that began in December 1993 when the turbine catastrophically failed in this case study for our Walking a Nuclear Tightrope report.  See details | Download the pdf

02/24/2006   UCS informed the NRC's Inspector General about the NRC staff's repeated violation of its own regulations and policies in granting enforcement discretion to let the reactor continue operating in a degraded condition caused in large part by the company's failures.  Download the pdf