In preparation for the upcoming Chief for Defense Nuclear Safety (CDNS) review, a self-assessment of NNSA Production Office (NPO) oversight of the B&W Pantex Plant and the Y-12 National Security Complex was completed from October 2013 – January 2014. The scope included all available CDNS Criteria, Review, and Approach Documents (CRADS) identified as of September 2013. The results of past CDNS Biennial Reviews performed on the Pantex and Y-12 Site Offices were reviewed by assessment team members to determine if corrective actions were completed or if they should be incorporated into the NPO processes. Results are captured in the functional area reports that follow this Executive Summary.