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APPENDIX O ACRONYMS € Euro ¥ Yen ABWR Advanced boiling water reactor ACRS Advisory Committee on Reactor Safeguards AC Alternating current ADAMS Agencywide Documents Access and Management System ADS Automatic depressurization system AEA Atomic Energy Act AEC Atomic Energy Commission AESJ Atomic Energy Society of Japan AFW Auxiliary feed water ALARA As Low As Reasonably Achievable AM Accident management ANS American Nuclear Society AOP Abnormal operating procedures ASME American Society of Mechanical Engineers ATWS Anticipated transient without scram B.5.b Section B.5.b of Order EA-06-137 BDB Beyond design basis B.P. Before present BWR Boiling water reactor CANDU Canada deuterium uranium CDC United States Centers for Disease Control and Prevention CERCLA Comprehensive Environmental Response, Compensation, and Liability Act CFR Code of Federal Regulations CME Coronal mass ejection CNSC Canadian Nuclear Safety Commission CS Core spray CST Condensate Storage Tank CV Containment vessel Prepublication Copy O-1

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Appendix O: Acronyms DARPA Defense Advanced Research Projects Agency DARTTM Deep-Ocean Assessment and Reporting of Tsunamis DBA Design-basis accident DBT Design-basis threat DC Direct current DHS United States Department of Homeland Security DIET The National Diet of Japan DOD United States Department of Defense DOE United States Department of Energy DRYAMB Dry ambient pressure (containment) D/W Drywell EAL Emergency action level EC European Commission ECCS Emergency core cooling system EDG Emergency diesel generator EDMG Extensive Damage Mitigation Guidelines ENSI Eidgenössisches Nuklearsicherheitsinspektorat (Swiss Federal Nuclear Safety Inspectorate) ENSREG European Nuclear Safety Regulators Group EOC Emergency operations center EOP Emergency operating procedures EPA United States Environmental Protection Agency EPRI Electric Power Research Institute EPZ Emergency planning zone ERC Emergency response center ERDA Energy Research and Development Administration EU European Union FDA United States Food and Drug Administration FEMA United States Federal Emergency Management Agency FLEX Diverse and flexible coping strategies FRMAC Federal Radiological Monitoring and Assessment Center GAO United States Government Accountability Office GE General Electric Company GRIPS National Graduate Institute for Policy Studies (Japan) GPS Global Positioning System GRS Gesellschaft für Anlagen- und Reaktorsicherheit (GRS), mbH GWe Gigawatt electric Prepublication Copy O-2

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Appendix O: Acronyms HERP Headquarters for Earthquake Research Promotion HHS United States Department of Health and Human Services HO Hydraulically operated HPCI High-pressure coolant injection HPCS High-pressure core spray HQ Headquarters HRA Human reliability analysis HSPD Homeland Security Presidential Directive IAEA International Atomic Energy Agency IC Isolation condenser ICECND Ice condenser (containment) ICM Interim compensatory measure ICRP International Commission on Radiological Protection INES International Nuclear and Radiological Event Scale INPO Institute of Nuclear Power Operations IOM Institute of Medicine (U.S. National Academy of Sciences) INSAG International Nuclear Safety Group (International Atomic Energy Agency) IPEEE Individual plant examination of external events IRSN Institut de Radioprotection et de Sûreté Nucléaire (France) JAEA Japan Atomic Energy Agency JAEC Japan Atomic Energy Commission JAES Japan Atomic Energy Society JANSI Japan Nuclear Safety Institute JANTI Japan Nuclear Technology Institute JAPC Japan Atomic Power Company JNES Japanese Nuclear Energy Safety Organization JSCE Japan Society of Civil Engineers JST Japan Standard Time; Japan Science and Technology Agency KI Potassium Iodide K-NET Kyoshin Network KiK-Net Kiban Kyoshin Network L Length LOCA Loss of Coolant Accident LPCI Low-pressure coolant injection LPCS Low-pressure core spray LR License renewal LWR Light-water reactor MAAP Modular accident analysis program MCR Main control room MELCOR Methods for estimation of leakages and consequences of releases METI Ministry of Economy, Trade and Industry (Japan) Prepublication Copy O-3

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Appendix O: Acronyms MEXT Ministry of Education, Culture, Sports, Science and Technology (Japan) MHLW Ministry of Health, Labor and Welfare (Japan) MIT Massachusetts Institute of Technology MN Meganewton MO Motor-operated MOE Ministry of the Environment (Japan) MOU Memorandum of understanding MRFA Maximally reasonably foreseeable accident MSIV Main steam isolation valves MSL Main steam line MW Megawatt MWe Megawatt electric N/A Not applicable NAE National Academy of Engineering (U.S. National Academy of Sciences) NAIIC Nuclear Accident Independent Investigation Commission (Japan) NARAC National Atmospheric Release Advisory Center NAS National Academy of Sciences (United States) NCRP National Council on Radiation Protection and Measurements NEA Nuclear Energy Agency (Organisation for Economic Co-operation and Development) NEI Nuclear Energy Institute NEPA National Environmental Policy Act NERHQ Nuclear Emergency Response Headquarters NISA Nuclear and Industrial Safety Agency (Japan) NIST National Institute of Standards and Technology NOAA United States National Oceanic and Atmospheric Administration NPP Nuclear Power Plant NPS Nuclear Power Station NRA Nuclear Regulation Authority (Japan) NRC National Research Council (U.S. National Academy of Sciences) NRF National Response Framework NSC Nuclear Safety Commission (Japan) NTSB National Transportation Safety Board NTTF Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident (U.S. Nuclear Regulatory Commission) O.P. Onahama Peil (Onahama Port Construction Standard Surface) OECD Organisation for Economic Co-operation and Development OL Operating license ONR Office for Nuclear Regulation (United Kingdom) ORNL Oak Ridge National Laboratory OSHA United States Occupational Safety and Health Administration P Pressure PAGs Protective action guidelines Prepublication Copy O-4

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Appendix O: Acronyms PAZ Precautionary action zone PCV Primary containment vessel PRA Probabilistic Risk Assessment PSA Probabilistic Safety Analysis; Probabilistic Safety Assessment psi Pounds per square inch psia Pounds per square inch absolute psig Pounds per square inch gauge PWR Pressurized water reactor R/B Reactor Building RCIC Reactor core isolation cooling REM Roentgen equivalent man (or mammal) REP Radiological emergency preparedness RFP Reactor feed-water pump RHR Residual heat removal RIR Risk-informed regulations RPV Reactor pressure vessel RWCU Reactor water cleanup unit RWST Reactor water storage tank S/C Suppression chamber SAM Severe accident management SAMG Severe accident management guideline SBO Station blackout SCJ Science Council of Japan SDF Self-Defense Forces (Japan) SFP Spent fuel pool SG Steam generator SGTS Standby gas treatment system SI Système Internationale (International System of Units) SNF Spent nuclear fuel SNL Sandia National Laboratories SNM Special nuclear materials SPAR Standardized plant analysis risk SPEEDI System for prediction of environment emergency dose information SPSA Seismic probabilistic safety assessment SPDS Safety parameter display system SRV Safety relief valve SSAMG Shutdown severe accident management guideline SSCs Structures, systems, and components T Temperature T/B Turbine building TAF Top of active fuel TEPCO Tokyo Electric Power Company Prepublication Copy O-5

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Appendix O: Acronyms TMI Three Mile Island TOPOFF Top officials’ exercises UCS Union of Concerned Scientists UNSCEAR United Nations Scientific Committee on the Effects of Atomic Radiation USNRC United States Nuclear Regulatory Commission V Volt VDC Volt DC WANO World Association of Nuclear Operators WENRA Western European Nuclear Regulators’ Association WHO World Health Organization Prepublication Copy O-6