| ACS | Accident Confinement System
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| AZ-1...AZ-4 | Emergency Protection "AZ-1"..."AZ-4"
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| BDBA | Beyond Design Basis Accident
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| CC | Condensate Cleaning
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| CD | Civil Defence
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| CD&ER | Civil Defence and Emergency Response
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| DCD | Department of the Civil Defence
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| C&I | Control and Instrumentation
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| CPS | Control and Protection System
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| DBA | Design Basis Accident
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| EBRD | European Bank for Reconstruction and Development
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| ECCS | Emergency Core Cooling System
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| EFWS | Emergency Feedwater System
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| EOC | Emergency Operating Center
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| FAS | Fast Acting Scram
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| FP | Fission Products
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| GESC | Governmental Emergency Situation Commission
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| HDC | Head of Civil Defence
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| HDD | Hydrological Diverting Dam
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| IAEA | International Atomic Energy Agency
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| INES | International Nuclear Event Scale
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| LOCA | Loss-Of-Coolant Accident
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| MCC | Main Circulation Circuit
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| MCP | Main Circulation Pump
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| MSV | Main Safety Valve
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| NDT | Non-Destructive Testing
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| NPP | Nuclear Power Plant
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| NSA | Nuclear Safety Account
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| OP | Operational Group
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| PCS | Purification and Cooling System
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| QA | Quality Assurance
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| RCP | Radiation and Chemical Division
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| RBMK | Russian Acronym for "Channelized Large Power Reactor"
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| RIA | Reactivity Initiated Event
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| SAR | Safety Analysis Report
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| SBU | Special Branch Unit
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| SDV-A | Steam Discharge Valve to ACS Pool
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| SDV-C | Steam Discharge Valve to Turbine Condenser
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| SIP | Swedish Acronym for Swedish International Project Nuclear Safety
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| SKI | Swedish Acronym for Swedish Nuclear Power Inspectorate
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| SMHI | Swedish Acronym for Swedish Meteorological Institute
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| SSI | Swedish Acronym for Swedish Radiation Protection Institute
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| SUP | Safety Upgrading Program
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| VATESI | Lithuanian Acronym for Lithuanian Nuclear Power Safety Inspectorate
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