ACRONYMS
| 2D | two-dimensional |
| 3D | three-dimensional |
| 3DEC | Three Dimensional Distinct Element Code |
| AMR | Analysis/Model Report |
| CDTT | Cross Drift Thermal Test |
| CRWMS | Civilian Radioactive Waste Management System |
| DEM | Distinct Element Model |
| DIRS | Document Input Reference System |
| DKM | Dual Permeability Model |
| DOE | Department of Energy |
| DST | Drift-Scale Test |
| DSDE | Drift-Scale Distinct Element |
| DTN | Data Tracking Number |
| EDA | Enhanced Design Alternatives |
| ESF | Exploratory Studies Facility |
| FEPS | Features, Events and Processes |
| FLAC3D | Fast Lagrangian Analysis of Continua in Three Dimensions |
| LA | License Application |
| LBT | Large Block Test |
| LDTH | Line-Averaged Heat Source Drift-Scale Thermal Hydrologic Model |
| LLNL | Lawrence Livermore National Laboratory |
| M&O | Management and Operating Contractor |
| MPBX | Multiple Point Borehole Extensometer |
| NFE | Near Field Environment |
| NRC | Nuclear Regulatory Commission |
| NUFT | Nonisothermal Unsaturated Flow and Transport |
| PA | Performance Assessment |
| PC | Personal Computer |
| QA | Quality Assurance |
| RTD | Resistive Temperature Device |
| SHT | Single Heater Test |
| SR | Site Recommendation |
| SRR | Software Routine Report |
| STN | Software Tracking Number |
| TBV | to be validated |
| TDMS | Technical Data Management System |
| TH | thermal-hydrological |
| THM | thermal-hydrological-mechanical |
| TM | thermal-mechanical |
| Tptpmn | Topopah Spring Tuff middle nonlithophysal unit |
| TSPA | Total System Performance Assessment |
| TWP | Technical Work Plan |
| UDEC | Universal Distinct Element Code |
| VA | Viability Assessment |
| WF | Waste Form |
| WP | Waste Package |
| YMP | Yucca Mountain Site Characterization Project |