January 2013

Review of the Los Alamos National Laboratory Weapons Engineering Tritium Facility Tritium Gas Containment Vital Safety System

The Office of Enforcement and Oversight (Independent Oversight), within the Office of Health, Safety and Security (HSS), conducted an independent review of the Los Alamos National Laboratory (LANL) Weapons Engineering Tritium Facility (WETF) safety significant Tritium Gas Containment System (TGCS), concurrent with a scheduled Los Alamos Site Office (LASO) assessment.

The purpose of the LASO assessment was to evaluate the functionality and operability of the TGCS (a vital safety system) and to ensure that the system complied with U.S. Department of Energy (DOE) orders and standards and other applicable standards and requirements. The assessment was conducted February 20 through March 2, 2012. Issuance of this report was deferred until completion of the related LASO report, issued in October 2012.