February 2015

Targeted Review of the Safety-Class Room Ventilation Systems and Associated Final Filtration Stages, and Review of Federal Assurance Capability at the Lawrence Livermore National Laboratory Plutonium Facility.

The Office of Nuclear Safety and Environmental Assessments, within the U.S. Department of Energy’s (DOE) independent Office of Enterprise Assessments (EA), Office of Environment, Safety and Health Assessments, conducted an independent review of the safety class room ventilation systems and associated final high-efficiency particulate air filtration stages at the Lawrence Livermore National Laboratory Plutonium Facility, which is operated by Lawrence Livermore National Security, LLC, under contract to the DOE National Nuclear Security Administration Livermore Field Office. EA also reviewed the performance of DOE oversight, as appropriate, to evaluate the effectiveness of the Federal assurance capability. EA performed a scoping and planning visit on site May 6-8, 2014 and the onsite data collection portion of the review during June 2-13, 2014.