| D&F | determination and finding |
| DHS | Department of Homeland Security |
| DNFSB | Defense Nuclear Facilities Safety Board |
| DNI | Director of National Intelligence |
| DOD | Department of Defense |
| DOE | Department of Energy |
| ERDA | Energy Research and Development Agency |
| ES&H | environment, safety, and health |
| FFRDC | federally funded research and development center |
| IC | Intelligence Community |
| IO | Interagency Order |
| LANL | Los Alamos National Laboratory |
| LLNL | Lawrence Livermore National Laboratory |
| M&O | management and operating |
| MEC | Mission Executive Council |
| MOU | memorandum of understanding |
| NNSA | National Nuclear Security Administration |
| NNSS | Nevada National Security Site (formerly the Nevada Test Site, or NTS) |
| NRC | Nuclear Regulatory Commission, or National Research Council |
| ODNI | Office of the Director of National Intelligence |
| ORNL | Oak Ridge National Laboratory |
| PCAST | President’s Council of Advisors on Science and Technology |
| PNNL | Pacific Northwest National Laboratory |
| R&D | research and development |
| S&T | science and technology |
| SNL | Sandia National Laboratories |
| ST&E | science, technology, and engineering |
| WBA | Work Boundary Agreement |
| WFO | Work for Others |
| WSO | Work Scope Agreement |
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