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Safety System Oversight Assessment, Los Alamos National Laboratory - May 2011

May 2011

Safety System Oversight Assessment of the Los Alamos National Laboratory Weapons Engineering Tritium Facility Tritium Gas Handling System

This report documents the results of the Office of Health, Safety and Security’s (HSS) review of a safety system oversight (SSO) assessment of the Los Alamos National Laboratory (LANL) Weapons Engineering Tritium Facility (WETF) tritium gas handling system (TGHS). The assessment evaluated the TGHS’s ability to perform as required by safety bases and other applicable requirements. The assessment was sponsored by the U.S. Department of Energy (DOE) Los Alamos Site Office (LASO) and was conducted October 25 – November 5, 2010.

The assessment demonstrated that the WETF System Engineering organization had sound engineering and tritium processing knowledge, but weak knowledge of the nuclear safety envelope and expectations for compliance with safety basis requirements. Overall, the LASO SSO assessment was competently performed by knowledgeable personnel using appropriate and challenging criteria.