| A&A | advisory and assistance |
| ACWP | actual cost of work performed |
| AE | acquisition executive |
| AEA | Atomic Energy Act |
| A/E/C | Architecture/Engineering/Construction |
| AFO | award fee objective (ex: AFO1-AFO7) |
| ATC | alternative technical concept |
| ATWP | actual time of work performed |
| BAC | budget at completion |
| BCWP | budgeted cost of work performed |
| BCWS | budgeted cost of work scheduled |
| BIM | building information modeling |
| BNI | Bechtel National, Inc. |
| BRAC | U.S. Department of Defense Base Realignment and Closure |
| CAD | computer aided design |
| CAP | corrective action plan |
| CD | critical decision (ex: CD-0, CD-1, CD-2, CD-3) |
| CE | chief executive for project management |
| CERCLA | Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (Superfund) |
| CII | Construction Industry Institute |
| CPAF | cost-plus-award-fee |
| CPCC | Central Plateau Cleanup Contract |
| CPFF | cost-plus-fixed-fee |
| CPI | Cost Performance Index |
| CPIF | cost-plus-incentive fee |
| CPPC | cost-plus-percent of cost |
| CR | cost reimbursement/cost reimbursable |
| CRD | contractor requirements document |
| D&D | decontamination and decommissioning |
| DAU | Defense Acquisition University |
| DFLAW | direct-feed low-activity waste |
| DoD | U.S. Department of Defense |
| DOE | U.S. Department of Energy |
| DOE-EM | U.S. Department of Energy’s Office of Environmental Management |
| DOE-LM | U.S. Department of Energy’s Office of Legacy Management |
| DOE-ORP | U.S. Department of Energy’s Office of River Protection |
| DON BRAC | U.S. Department of the Navy Base Realignment and Closure |
| EAC | estimate at completion |
| EIA | Electronic Industries Alliance |
| EM | See DOE-EM |
| EMAB | Environmental Management Advisory Board |
| EPA | U.S. Environmental Protection Agency |
| ERDA | Energy Research and Development Administration |
| ESAAB | Energy Systems Acquisition Advisory Board |
| ESCM | end-state contracting model |
| ETEC | Energy Technology Engineering Center |
| ETTP | East Tennessee Technology Park |
| EVM | earned value management |
| EVMS | earned value management system |
| FAR | Federal Acquisition Regulation |
| FFP | firm fixed price |
| FPD | federal project director |
| FPEPA | fixed-price economic price adjustment |
| FPI | fixed-price incentive |
| FPIF | fixed price incentive fee |
| FUDS | formerly used defense site |
| FY | fiscal year |
| GAO | U.S. Government Accountability Office |
| GDP | gaseous diffusion plant |
| Gmax | guaranteed maximum price |
| HC | hazard category (e.g., HC-1, HC-2, HC-3) |
| HMESC | Hanford Mission Essential Services Contract |
| IDIQ | indefinite delivery/indefinite quantity |
| IO | Infrastructure Ontario |
| ISO | International Standards Organization (family of standards regarding “building information modelling (BIM) according to the ISO 19650 series”) |
| JOC | job-order contract |
| K-25 | Manhattan Project |
| KPI | key performance indicator |
| KPP | key performance parameter |
| LAW | low-activity waste |
| LAWPS | low-activity waste pretreatment system |
| LM | legacy management (See DOE-LM) |
| M&O | management and operating |
| MAC | multiple award contract |
| MR | management reserve |
| NA | not applicable |
| NAVFAC | Naval Facilities Engineering Systems Command |
| NDAA | National Defense Authorization Act |
| NNSA | U.S. Department of Energy’s National Nuclear Security Agency |
| NRC | National Research Council |
| OBS | organizational breakdown structure |
| OCPMP | Overall Contract/Project Management Performance |
| OECM | U.S. Department of Energy’s Office of Engineering and Construction Management |
| OMB | Office of Management and Budget |
| ORP | See DOE-ORP |
| OTA | Office of Technology Assessment |
| PARS | Project Assessment and Reporting System |
| PB | performance baseline |
| PBI | performance based incentive |
| PBS | program breakdown structure |
| PEMP | Performance Evaluation and Measurement Plan |
| PEP | project execution plan |
| PM | project management |
| PMB | performance measurement baseline |
| PMCDP | Project Management Career Develop Program |
| PMI | Project Management Institute |
| PMIAA | Program Management Improvement Accountability Act |
| PMIO | program management improvement officer |
| PMO | program management oversight |
| PMRC | Project Management Risk Committee |
| PMSO | project management support office |
| POP | period of performance |
| PRC | Plateau Remediation Contract |
| RCA | root cause analysis |
| RCRA | Resource Conservation and Recovery Act |
| RFI | request for information |
| RFP | request for proposal |
| RFQ | request for qualifications; request for quote |
| ROD | record of decision |
| SC | U.S. Department of Energy’s Office of Science |
| SEA | special emphasis area |
| SPI | Schedule Performance Index |
| SRS | Savannah River Site |
| SSAB | Site-Specific Advisory Board |
| STWP | scheduled time of work performed |
| t | time |
| T&M | time-and-material |
| TBD | to be decided |
| TCC | Tank Closure Contract |
| TOC | Task-Order Contract |
| TPC | total project cost |
| TRA | technology readiness assessment |
| TSCR | tank-side cesium removal |
| U-233 | uranium-233 |
| USACE | U.S. Army Corps of Engineers |
| WAI | Wastren Advantage, Inc. |
| WBS | work breakdown structure |
| WIPP | Waste Isolation Pilot Plant |
| WRPS | Washington River Protection Solutions, LLC |
| WTP | Waste Treatment & Immobilization Plant |
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