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1. 目录
[TOC]
1.1. 专业英语
| 英文 | 中文............... | 备注 |
|---|---|---|
| ACC accumulator |
安注水箱 | volume for safety injection |
| AE | 控制棒组件 | absorbing element |
| AFWS | 辅助给水系统 | auxiliary feedwater system |
| baffle | 堆芯围板 | 置于吊篮内侧 |
| barrel | 堆芯吊篮 | Core (support) barrel属于堆芯下部支撑结构，装载着反应堆。其他的下栅格板、热中子屏蔽、堆芯围板等都依附于其上。 |
| bypass | 旁路 | bypass flow 旁流 |
| CEDM、CRDM | 控制棒驱动机构 | control element/rod drive mechanism |
| CMT | 堆芯补水箱 | core makeup tank |
| cold leg | 冷管段（冷腿） | |
| containment | 安全壳 | |
| Core (support) barrel | 堆芯吊篮 | 属于堆芯下部支撑结构，装载着反应堆。其他的下栅格板（下侧）、热中子屏蔽（外侧）、堆芯围板（内侧）等都依附于其上。 |
| core support column | ||
| core support plate | ||
| core baffle | 堆芯围板 | 置于吊篮内侧 |
| CPR1000 | 中广核二代堆：岭澳二期、红沿河、宁德、阳江、防城港 | China Pressurized Reactor，二代堆，源自法国M310（大亚湾）; 改进为三代ACPR1000，后与中核ACP1000融合为华龙一号HPR1000; |
| criticality | 临界状态 | 堆内中子增值系数达到1，无需外界中子源就能维持功率水平 |
| background radiation | 本底辐射 | |
| data deck | 数据卡 | relap5输入卡 |
| decay heat | 衰变热 | |
| downcomer | 下降段 | |
| dose equivalent | 剂量当量 | 用来衡量辐射的生物效应，单位西弗Sv（Sievert，希沃特），=吸收剂量*品质因数（衡量某种辐射引起的生物学损伤能力）。 |
| ECCS | 应急堆芯冷却系统 | emergency core cooling system |
| EPSS | 应急非能动安全系统 | Emergency Passive Safety System (EPSS) |
| feedwater | 给水 | e.g. SG feedwater 蒸汽发生器给水，和堆芯流动类似也是先下降段再上升段 |
| FP | 满功率 | full power |
| fuel assembly/bundles | 燃料组件，燃料棒 | |
| GNPS | 大亚湾核电站（广东核电站） | Guangdong Nuclear Power Station (GNPS) |
| guide tubes | 控制棒导向管 | |
| hot leg | 热管段（热腿） | |
| HPR1000 | 华龙一号： | 福清5、6机组，防城港3、4机组，宁德5、6机组，昌江3、4机组，漳州1、2机组 |
| HPSI | 高压安注 | high pressure safety injection，高压安全注射 |
| inner radiation hazard | 内照射危害 | 体内放射性物质造成的危害 |
| IPWR | 一体化压水反应堆 | integrated pressurized water reactor |
| IRWST | 安全壳内置换料水箱 | in-containment refueling water storage tank |
| latent heat | 潜热 | |
| lattice | 栅格 | |
| LNPS | 岭澳核电站 | Lingao Nuclear Power Station (LNPS) |
| LOCA | 失水事故 | loss of coolant accident |
| LOFA | 给水丧失事故 | 核电站中给水系统发生故障或中断的事故。无法提供足够的冷却剂，核反应堆的温度将迅速上升，这可能导致核反应失控和燃料组件过热。 |
| LOFT | 失水试验 | loss of coolant test |
| loop seal | 环路水封 | 环路水封清除（LSC，loop seal clearing）：在冷管段小破口时，如果一回路自然循环驱动力不足以克服过渡段U型管内的环路水封时，自然循环被中断，导致堆芯上腔室内蒸汽不断聚积，引起堆芯坍塌液位下降和燃料包壳峰值温度上升 |
| lower core plate | 堆芯下栅格板 | |
| lower head | 下封头 | |
| lower plenum | 下腔室 | |
| lower support plate | 堆芯支撑板 | 吊篮组件的底板 |
| MFWS | 主给水（系统） | main feed water system |
| moderator | 慢化剂 | |
| MSIV | 主蒸汽隔离阀 | main steam isolation valve |
| MSLB | 主蒸汽管道破裂事故 | main steam large break accident |
| nominal | 名义值; 归一化值 | 例如：nominal core power; Nominalization |
| NSSS | 核蒸汽供应系统 | nuclear steam supply system |
| PCT | 燃料包壳峰值温度 | peak cladding temperature |
| power density | 功率密度 | J/(m^3*s) |
| power grid | 电网 | |
| PRA | 概率风险评估 | PRA (probabilistic risk assessment). |
| prompt critical | 瞬发临界 | 反应堆仅靠瞬发中子prompt neutron（不靠缓发中子decay neutron）就能达到临界状态。此时反应堆很难控制 |
| PWR | 压水堆 | pressurized water reactor |
| PZR | 稳压器 | pressurizer |
| radiator | 散热器 | |
| RCS | 反应堆冷却剂系统 | reactor coolant system |
| reactivity induce | 反应性引入 | 如scram control rod bank reactivity induce，紧急停堆控制棒反应性引入 |
| reactor coolant pump | 主泵 | |
| reactor (pressure) vessel | 反应堆（压力）容器 | |
| reflector | 反射层 | 放在堆芯周围，反射中子减少损耗，使得反应堆体积可以减小 |
| reflood | 再淹没 | 在冷却剂丧失等事故中，一回路冷却剂流量减小，堆芯水位降低，燃料棒外壳可能暴露在空气中。通过安注系统等重新注入冷却剂，可以使重新淹没燃料棒。从而避免燃料棒过热，减少核反应堆事故的风险。 |
| relief valve | 释放阀 | |
| RPV | 反应堆压力容器 | reactor pressure vessel |
| RWST IRWST |
换料水箱 安全壳内置换料水箱 |
refueling water storage tank in-containment refueling water storage tank |
| safety injection system | 安注系统 | 也称应急堆芯注水系统，失水事故、主蒸汽管道破裂事故时紧急注水 |
| safety valve | 安全阀 | 蒸汽发生器上，弹簧加载，超压开启 |
| SBLOCA | 小破口失水事故 | small break loss of coolant accident |
| scram | 反应堆紧急停堆 | 据说是safety control rod ax man，配备斧头的人砍断控制棒的绳索 |
| SG | 蒸汽发生器 | steam generator tube 蒸汽发生器传热管 |
| SI | 安注 | safety injection |
| SMR | 小型模块化反应堆 | Small modular reactor |
| spacer grid | 定位格架 | |
| spent fuel | 乏燃料 | |
| spiders | 星形架 | 控制棒组件上控制棒的支撑结构 |
| surge line | 波动管 | pressurizer surge line |
| thermocouple columns | 热电偶套管 | |
| thermal shield | 热屏蔽 | 置于压力容器内壁 |
| upper core plate | 堆芯上栅格板 | |
| upper head | 上封头 | |
| upper plenum | 上腔室 | |
1.2. NuScale （未整理）
| Acronym or Abbreviation | Description |
|---|---|
| AAC | alternate AC power |
| AAPS | auxiliary AC power source |
| ABS | auxiliary boiler system |
| ABVS | Annex Building HVAC system |
| ABWR | Advanced Boiling Water Reactor |
| AC | alternating current |
| ACI | American Concrete Institute |
| ACM | Availability Controls Manual |
| ACRS | Advisory Committee on Reactor Safeguards |
| AEA | Atomic Energy Act |
| AFU | air filtration unit |
| AFWS | auxiliary feedwater system |
| AHJ | authority having jurisdiction |
| AHU | air handling unit |
| AIA | Authorized Inspection Agency |
| AISC | American Institute of Steel Construction |
| AISI | American Iron and Steel Institute |
| ALARA | as low as reasonably achievable |
| ALU | actuation logic unit |
| ALWR | advanced light water reactor |
| AMCA | Air Movement and Control Association International, Inc. |
| ANB | Annex Building |
| ANS | American Nuclear Society |
| ANSI | American National Standards Institute |
| AO | axial offset |
| AOA | axial offset anomaly |
| AOO | anticipated operational occurrence |
| AOV | air-operated valve |
| API | American Petroleum Institute |
| APWR | Advanced Pressurized Water Reactor |
| AQ | augmented quality |
| ARM | area radiation monitor |
| ARO | all rods out |
| ARS | acceleration response spectra |
| ASCE | American Society of Civil Engineers |
| ASD | adjustable speed drive |
| ASHRAE | American Society of Heating, Refrigerating, and Air-Conditioning Engineers |
| ASM | American Society for Metals International |
| ASME | American Society of Mechanical Engineers |
| ASTM | American Society for Testing and Materials |
| ATB | Administration and Training Building |
| ATWS | anticipated transient without scram |
| AVT | all-volatile treatment |
| AWS | American Welding Society |
| AWWA | American Water Works Association |
| BAS | boron addition system |
| BAST | boric acid storage tank |
| BDBE | beyond design basis event |
| BDBEE | beyond design basis external event |
| Acronym or Abbreviation | Description |
| BDG | backup diesel generator |
| BOC | beginning of cycle |
| BOL | beginning of life |
| BOP | balance-of-plant |
| BPDS | balance-of-plant drain system |
| BPE | bioprocessing equipment |
| BPSS | backup power supply system |
| BPVC | Boiler and Pressure Vessel Code |
| BRL | Ballistic Research Laboratory |
| BRVS | battery room ventilation system |
| BTP | Branch Technical Position |
| BWR | boiling water reactor |
| CAM | continuous air monitor |
| CARS | condenser air removal system |
| CAS | central alarm station |
| CAS | compressed air system |
| CCBE | common cause basic event |
| CCDF | conditional core damage frequency |
| CCDP | conditional core damage probability |
| CCF | common cause failure |
| CCFL | counter current flow limitation |
| CCFP | conditional containment failure probability |
| CDE | core damage event |
| CDF | core damage frequency |
| CDI | conceptual design information |
| CDM | certified design material |
| CDST | core damage source term |
| CEA | control element assembly |
| CES | containment evacuation system |
| CET | containment event tree |
| CEUS | central and eastern United States |
| CFD | computational fluid dynamics |
| CFDS | containment flooding and drain system |
| CFR | Code of Federal Regulations |
| CFT | containment flange tool |
| CHF | critical heat flux |
| CHFR | critical heat flux ratio |
| CFWS | condensate and feedwater system |
| CHRS | containment heat removal system |
| CHWS | chilled water system |
| CILRT | containment integrated leak rate test |
| CIM | civil interface macro |
| CIP | clean-in-place |
| CIS | containment isolation system |
| CIV | containment isolation valve |
| CLRF | conditional large release frequency |
| CLRT | containment leakage rate testing |
| CMAA | Crane Manufacturers Association of America |
| CMS | code management software |
| CMTR | certified material test report |
| Acronym or Abbreviation | Description |
| CNTS | containment system |
| CNV | containment vessel |
| CNVF | containment vessel failure |
| COC | certificate of compliance |
| COL | combined license |
| COLA | combined license application |
| COLR | core operating limits report |
| COMS | communication system |
| CPRS | condensate polisher resin regeneration system |
| CPS | condensate polishing system |
| CQC | complete quadratic combination |
| CRA | control rod assembly |
| CRB | Control Building |
| CRDM | control rod drive mechanism |
| CRDS | control rod drive system |
| CRE | control room envelope |
| CRHS | control room habitability system |
| CRM | control rod misoperation |
| CRVS | normal control room HVAC system |
| CSA | core support assembly |
| CSDRS | certified seismic design response spectra |
| CSDRS-HF | certified seismic design response spectra - high frequency |
| CSS | containment sampling system |
| CST | condensate storage tank |
| CTG | combustion turbine generator |
| CUB | Central Utility Building |
| CVAP | Comprehensive Vibration Assessment Program |
| CVCS | chemical and volume control system |
| CWS | circulating water system |
| D3 | diversity and defense in depth |
| DAC | design acceptance criteria |
| DAS | distributed antenna system |
| DAS | diverse actuation system |
| DAW | dry active waste |
| DBA | design basis accident |
| DBE | design basis event |
| DBPB | design basis pipe break |
| DBST | design basis source term |
| DBT | design basis tornado |
| DC | direct current |
| DCA | Design Certification Application |
| DCD | Design Control Document (Note - this is synonymous with FSAR in this document) |
| DCH | direct containment heating |
| DCS | distributed control system |
| DDC | distributed Doppler coefficient |
| DDG | dry dock gate |
| DGB | Diesel Generator Building |
| DGBVS | Diesel Generator Building HVAC system |
| DHRS | decay heat removal system |
| DIM | display interface module |
| Acronym or Abbreviation | Description |
| DMA | dimethylamine |
| DNB | departure from nucleate boiling |
| DNBR | departure from nucleate boiling ratio |
| DOE | Department of Energy |
| DOT | Department of Transportation |
| D-RAP | Design Reliability Assurance Program |
| DSRS | Design Specific Review Standard |
| DSS | digital safety system |
| DSW | dry solid waste |
| DTC | Doppler temperature coefficient, fuel temperature coefficient, Doppler coefficient |
| DWS | demineralized water system |
| EAB | exclusion area boundary |
| EAL | Emergency Action Level |
| ECCS | emergency core cooling system |
| ECL | effluent concentration limit |
| EDL | equivalent dead load |
| EDMG | extensive damage mitigation guidelines |
| EDNS | normal DC power system |
| EDSS | highly reliable DC power system |
| EDSS-C | EDSS-common |
| EDSS-MS | EDSS-module-specific |
| EDV | engineering design verification |
| EFDS | equipment and floor drainage system |
| EFPD | effective full-power days |
| EFPY | effective full-power years |
| EHVS | 13.8 kV and switchyard system |
| EIM | equipment interface module |
| ELVS | low voltage AC electrical distribution system |
| ELWR | evolutionary light water reactor |
| EMC | electromagnetic compatibility |
| EMDAP | evaluation model development and assessment process |
| EMDM | electromagnetic drive mechanism |
| EMI | electromagnetic interference |
| EMVS | medium voltage AC electrical distribution system |
| EOC | end of cycle |
| EOF | emergency operations facility |
| EOL | end of life |
| EOP | emergency operating procedure |
| EPA | electrical penetration assembly |
| EPA | Environmental Protection Agency |
| EPG | emergency procedure guidelines |
| EPRI | Electric Power Research Institute |
| EPZ | emergency planning zone |
| EQ | equipment qualification |
| EQDP | equipment qualification data package |
| EQRF | equipment qualification record file |
| ERDA | Energy Research and Development Administration |
| ERDS | emergency response data system |
| ERF | emergency response facility |
| ERO | Emergency Response Organization |
| Acronym or Abbreviation | Description |
| ERS | equipment requirement specification |
| ESAS | emergency safeguards actuation system |
| ESBWR | Economic Simplified Boiling Water Reactor |
| ESF | engineered safety feature |
| ESFAS | engineered safety features actuation system |
| ESL | equivalent static load |
| ESP | early site permit |
| ETA | ethanolamine |
| ETAP | Electrical Transient Analyzer Program |
| FA | functional analysis |
| FAC | flow-accelerated corrosion |
| FAT | factory acceptance test |
| FATT | fracture appearance transition temperatures |
| FCI | fuel-coolant interaction |
| FCU | fan coil unit |
| FDA | final design approval |
| FDS | fire detection system |
| FEM | Federation Europeenne de la Manutention |
| FERC | Federal Energy Regulatory Commission |
| FFD | fitness-for-duty |
| FFT | fast Fourier transform |
| FHA | fire hazards analysis |
| FHE | fuel handling equipment |
| FHM | fuel handling machine |
| FIRS | foundation input response spectra |
| FIT | flow-indicating transmitter |
| FIV | flow-induced vibration |
| FLEX | diverse and flexible coping strategies (based on NRC’s Fukushima task force recommendations) |
| FLPRA | flooding probabilistic risk assessment |
| FMEA | failure modes and effects analysis |
| FOAK | first-of-a-kind |
| FOM | figure of merit |
| FPGA | field programmable gate array |
| FPP | Fire Protection Program |
| FPRA | fire probabilistic risk assessment |
| FPS | fire protection system |
| FRA | functional requirements analysis |
| FRP | fiber-reinforced polymer |
| FSAR | Final Safety Analysis Report (Note - this is synonymous with DCD in this document) |
| FSG | FLEX support guidelines |
| FSI | fluid-structure interaction |
| FSSA | fire safe shutdown analysis |
| FSSD | fire safe shutdown |
| FV | Fussell-Vesely |
| FW | feedwater |
| FWB | Fire Water Building |
| FWH | feedwater heater |
| FWIV | feedwater isolation valve |
| FWLB | feedwater line break |
| FWPB | feedwater pipe break |
| Acronym or Abbreviation | Description |
| FWRV | feedwater regulating valve |
| FWS | feedwater system |
| FWTS | feedwater treatment system |
| GAC | granulated activated charcoal |
| GDC | General Design Criteria |
| GLPS | grounding and lightning protection system |
| GMRS | ground motion response spectra |
| GQA | graded quality assurance |
| GRWS | gaseous radioactive waste system |
| GSI | generic safety issue |
| GTAW | gas tungsten arc weld |
| GTS | generic technical specifications |
| HAZ | heat-affected zone |
| HCLPF | high confidence of low probability of failure |
| HCW | high-conductivity waste |
| HDP | Hardware Development Plan |
| HDPE | high-density polyethylene |
| HED | human engineering discrepancy |
| HEI | Heat Exchanger Institute |
| HELB | high-energy line break |
| HEP | human error probability |
| HEPA | high-efficiency particulate air |
| HFE | human factors engineering, human failure events |
| HFEITS | human factors engineering issue tracking system |
| HFP | hot full power |
| HIC | high integrity container |
| HIPS | highly integrated protection system |
| HLHE | heavy load handling equipment |
| HMI | human machine interface |
| HOV | hydraulic-operated valve |
| HP | high pressure, horsepower |
| HP-FWH | high pressure feedwater heater |
| HPM | human performance monitoring |
| HPME | high pressure melt ejection |
| HPN | health physics network |
| HRA | human reliability analysis |
| HRS | hardware requirement specification |
| HSI | human-system interface |
| HVAC | heating ventilation and air conditioning |
| HVDS | feedwater heater vents and drains system |
| HWM | hard-wired module |
| HZP | hot zero power |
| I&C | instrumentation and controls |
| IAB | inadvertent actuation block |
| IAS | instrument air system |
| IBC | International Building Code |
| ICIS | in-core instrumentation system |
| ICS | integrated control system |
| ID | inside diameter |
| IDD | interface design description |
| Acronym or Abbreviation | Description |
| IE | infrequent event, initiating event |
| IEC | International Electrotechnical Commission |
| IEEE | Institute of Electrical and Electronics Engineers |
| IES | Illuminating Engineering Society of North America |
| IET | integral effects test |
| IGSCC | intergranular stress-corrosion cracking |
| IHA | important human action |
| ILRT | integrated leak rate testing |
| INL | Idaho National Laboratory |
| INPO | Institute of Nuclear Power Operations |
| IOTBS | inadvertent opening of the turbine bypass system |
| IP | implementation plan |
| IP | intermediate pressure |
| IP-FWH | intermediate pressure feedwater heater |
| ISA | integrated safety analysis, Instrument Society of America |
| ISG | interim staff guidance |
| ISI | inservice inspection |
| ISLH | inservice leak and hydro |
| ISLOCA | interfacing systems loss-of-coolant accident |
| ISM | independent support motion |
| ISO | International Organization for Standardization |
| ISRS | in-structure response spectra |
| IST | inservice testing |
| ISV | integrated system validation |
| ITAAC | Inspections, Tests, Analyses, and Acceptance Criteria |
| ITM | inspection, testing, and maintenance |
| ITP | Initial Test Program |
| IVR | in-vessel retention |
| JLD | Japan Lessons-Learned Directorate |
| LBB | leak-before-break |
| LCO | limiting condition for operation |
| LCS | local control station |
| LCW | low-conductivity waste |
| LER | Licensee Event Report |
| LHGR | linear heat generation rate |
| LLRT | local leak rate test |
| LOCA | loss-of-coolant accident |
| LOLA | loss of large areas |
| LOOP | loss of offsite power |
| LP | low pressure |
| LP-FWH | low pressure feedwater heater |
| LPSD | low power and shutdown |
| LPZ | low population zone |
| LRA | lower riser assembly |
| LRF | large release frequency |
| LRVP | liquid ring vacuum pump |
| LRW | liquid radioactive waste |
| LRWS | liquid radioactive waste system, liquid radwaste system |
| LSH | level switch, high |
| LSL | level switch, low |
| Acronym or Abbreviation | Description |
| LSSS | limiting safety system setting |
| LTC | load manual tap changers |
| LTCC | long-term core cooling |
| LTOP | low temperature overpressure protection |
| LUHS | loss of normal access to the ultimate heat sink |
| LWMS | liquid waste management system |
| LWR | light water reactor |
| MAE | module assembly equipment |
| MC | main condenser |
| MCC | motor control center |
| MCHFR | minimum critical heat flux ratio |
| MCR | main control room |
| MCS | module control system |
| MCYR | module critical year |
| MEL | master equipment list |
| MEMS | meteorological and environmental monitoring system |
| MFW | main feedwater |
| MHA | maximum hypothetical accident |
| MHS | module heatup system |
| MIB | monitoring and indication bus |
| MIC | microbiologically induced corrosion |
| MIT | Massachusetts Institute of Technology |
| MLA | module lifting adapter |
| MLD | master logic diagram |
| MM | multiple, multi-module |
| MMAF | multi-module adjustment factor |
| MMI | multi-module issue |
| MMPSF | multi-module performance shaping factor |
| MMS | moment magnitude scale |
| MOC | middle of cycle |
| MOV | motor-operated valve |
| MPS | module protection system |
| MPT | main power transformer |
| MPU | magnetic speed pickup |
| MSI | main steam isolation |
| MSIBV | main steam isolation bypass valves |
| MSIV | main steam isolation valve |
| MSLB | main steam line break |
| MSO | multiple spurious operations |
| MSPB | main steam pipe break |
| MSPI | mitigating system performance index |
| MSS | main steam system |
| MSSV | main steam safety valve |
| MTC | moderator temperature coefficient |
| MTU | metric tons, uranium |
| MWe | megawatt electric |
| MWS | maintenance workstation |
| MWt | megawatt thermal |
| N/A | Not Applicable |
| NDE | non-destructive examination |
| Acronym or Abbreviation | Description |
| NDS | nitrogen distribution system |
| NDT | non-destructive testing |
| NEI | Nuclear Energy Institute |
| NERC | North American Electric Reliability Corporation |
| NFA | new fuel assembly |
| NFE | new fuel elevator |
| NFJC | new fuel jib crane |
| NFPA | National Fire Protection Association |
| NIC | network interface controller |
| NIST | National Institute of Standards and Technology |
| NIST-1 | NuScale Integral System Test Facility |
| NMS | neutron monitoring system |
| NOG | nuclear overhead and gantry |
| NPM | NuScale Power Module |
| NPP | NuScale Power Plant |
| NPS | nominal pipe size |
| NPSH | net positive suction head |
| NRC | Nuclear Regulatory Commission |
| NRF | nuclear reliability factor |
| NSA | neutron source assembly |
| NSAC | Nuclear Safety Analysis Center |
| NSSS | nuclear steam supply system |
| NTTF | Near-Term Task Force |
| OBE | operating basis earthquake |
| OCS | operational condition sampling |
| OD | outside diameter |
| ODC | overspeed detection circuit |
| ODCM | Offsite Dose Calculation Manual |
| OE | operating experience |
| OER | operating experience review |
| OHLHS | overhead heavy load handling system |
| ORNL | Oak Ridge National Laboratory |
| ORPP | Operational Radiation Protection Program |
| OSC | operational support center |
| OSHA | Occupational Safety and Health Administration |
| OSP | overspeed protection system |
| OSU | Oregon State University |
| P&ID | piping and instrumentation diagram |
| PA | protected area |
| PA/GA | public address/general alarm |
| PACS | priority actuation and control system |
| PAM | post-accident monitoring |
| PBX | private branch exchange |
| PCA | primary coolant activity |
| PCCV | prestressed concrete containment vessel |
| PCP | Process Control Program |
| PCS | 非能动安全壳冷却系统（Passive Containment Cooling System，PCS）； plant control system |
| PCT | peak cladding temperature |
| PCUS | pool cleanup system |
| PDC | power distribution center |
| Acronym or Abbreviation | Description |
| PDC | principal design criteria |
| PDIL | power dependent insertion limit |
| PDIT | differential pressure indicating transmitter |
| PFT | process feed tank |
| PGA | peak ground acceleration |
| pHT | concentration of H+ ion on a logarithmic scale (temperature dependent) |
| PID | proportional integral derivative |
| PING | particulate, iodine, and noble gas |
| PIRT | phenomena identification and ranking table |
| PIT | pressure indicating transmitter |
| PLC | programmable logic controller |
| PLD | pool leakage detection |
| PLDD | programmable logic design description |
| PLDP | Programmable Logic Development Plan |
| PLDS | pool leakage detection system |
| PLHGR | peak linear heat generation rate |
| PLM | priority logic module |
| PLRS | programmable logic requirement specification |
| PLS | plant lighting system |
| PLVVP | Programmable Logic Verification and Validation Plan |
| PMF | probable maximum flood |
| PMP | probable maximum precipitation |
| PORV | power-operated relief valve |
| POS | plant operating state |
| POV | power-operated valve |
| PPE | personnel protective equipment |
| PPS | plant protection system |
| PRA | probabilistic risk assessment |
| PRV | pressure relief valve |
| PSCIV | primary system containment isolation valves |
| PSCS | pool surge control system |
| PSD | power spectra density |
| PSMS | power supply monitoring system |
| PSS | process sampling system |
| PST | phase separator tank |
| PSTN | public switched telephone network |
| PTAC | performance and test acceptance criteria band |
| PTS | pressurized thermal shock |
| PVC | polyvinyl chloride |
| PVMS | plant-wide video monitoring system |
| PWHT | post-weld heat treatment |
| PWR | pressurized water reactor |
| PWS | potable water system |
| PWSCC | primary water stress-corrosion cracking |
| PZR | pressurizer |
| QA | quality assurance |
| QAP | Quality Assurance Program |
| QAPD | Quality Assurance Program Description |
| QPD | quadrant power difference |
| QD | quick disconnect |
| Acronym or Abbreviation | Description |
| QPF | quadrant power fractions |
| RAI | request for additional information |
| RAP | Reliability Assurance Program |
| RAW | risk achievement worth |
| RBC | Reactor Building crane |
| RBCM | Reactor Building components |
| RBVS | Reactor Building HVAC system |
| RCA | radiologically controlled area |
| RCCA | rod control cluster assembly |
| RCCWS | reactor component cooling water system |
| RCP | reactor coolant pump |
| RCPB | reactor coolant pressure boundary |
| RCRA | Resource Conservation and Recovery Act |
| RCS | reactor coolant system |
| RDT | reactor drain tank |
| REA | rod ejection accident |
| RETS | Radiological Effluent Technical Specifications |
| RFI | radio frequency interference |
| RFP | refueling pool |
| RFT | reactor flange tool |
| RG | Regulatory Guide |
| RHR | residual heat removal |
| RHX | regenerative heat exchanger |
| RIS | regulatory issue summary |
| RLE | review level earthquake |
| RM | radiation monitoring |
| RMS | fixed area radiation monitoring system |
| RMTS | risk-managed technical specifications |
| RO | reverse osmosis |
| ROP | Reactor Oversight Process |
| RPCS | reactor pool cooling system |
| RPI | rod position indication |
| RPS | reactor protection system |
| RPV | reactor pressure vessel |
| RRS | required response spectrum |
| RRV | reactor recirculation valve |
| RSA | remote shutdown area |
| RSR | results summary report |
| RSS | remote shutdown station |
| RSV | reactor safety valve |
| RTB | reactor trip breaker |
| RTD | resistance temperature detector |
| RTM | requirements traceability matrix |
| RTNDT | reference temperature for nil-ductility transition |
| RTNSS | regulatory treatment of nonsafety systems |
| RTP | rated thermal power |
| RTPTS | reference temperature, pressurized thermal shock |
| RTS | reactor trip system |
| RVI | reactor vessel internals |
| RVV | reactor vent valve |
| Acronym or Abbreviation | Description |
| RWB | Radioactive Waste Building |
| RWBCR | Radioactive Waste Building control room |
| RWBVS | Radioactive Waste Building HVAC system |
| RWDS | radioactive waste drain system |
| RWMS | radioactive waste management system |
| RWSS | raw water supply system |
| RXB | Reactor Building |
| RXC | reactor core |
| S&Q | staffing and qualifications |
| SAFDL | specified acceptable fuel design limit |
| SAM | seismic anchor motion |
| SAMDA | severe accident mitigation design alternative |
| SAMG | severe accident management guideline |
| SAR | Safety Analysis Report |
| SAS | secondary alarm station |
| SAS | service air system |
| SAT | site acceptance testing |
| SBAC | smooth bounding analysis curve |
| SBLB | subscale boundary layer boiling |
| SBLOCA | small-break loss-of-coolant accident |
| SBM | scheduling and bypass module |
| SBO | station blackout |
| SBVS | Security Building HVAC system |
| SC-I | Seismic Category I |
| SC-II | Seismic Category II |
| SC-III | Seismic Category III |
| SCB | Security Buildings |
| SCC | stress corrosion-cracking |
| SCDF | seismic core damage frequency |
| SCR | silicon controlled rectifier |
| SCR | SCRAM load |
| SCS | secondary sampling system |
| SCWS | site cooling water system |
| SDB | safety data bus |
| SDIS | safety display and indication system |
| SDM | shutdown margin |
| SDOE | secure development and operational environment |
| SDOF | single-degree-of-freedom |
| SDP | software development process |
| SDS | site drainage system |
| SEB | Security Building |
| SECS | plant security system |
| SECY | Secretary of the Commission, Office of the NRC |
| SEI | Structural Engineering Institute |
| SEL | seismic equipment list |
| SER | Safety Evaluation Report |
| SFA | spent fuel assembly |
| SFM | safety function module |
| SFP | spent fuel pool |
| SFPCS | spent fuel pool cooling system |
| Acronym or Abbreviation | Description |
| SFSS | spent fuel storage system |
| SG | separation group |
| SG | steam generator |
| SG | strain gauge |
| SGI | safeguards information |
| SGS | steam generator system |
| SGTF | steam generator tube failure |
| SICS | safety information and control system |
| SIL | software integrity level |
| SLB | steam line break |
| SLP | site layout plan |
| SM | single module |
| SMA | seismic margin assessment |
| SMACNA | Sheet Metal and Air Conditioning Contractors' National Association |
| SME | subject matter expert |
| SMR | small modular reactor |
| SMS | seismic monitoring system |
| SNL | Sandia National Laboratories |
| SNM | special nuclear material |
| SOCA | security owner controlled area |
| SOV | solenoid-operated valve |
| SPAR | standardized plant analysis risk |
| SPND | self-powered neutron detector |
| SPS | security power system |
| SQDP | seismic qualification data package |
| SQRF | seismic qualification record form |
| SQUG | Seismic Qualification Utility Group |
| SR | surveillance requirement |
| SREC | standard radiological effluent control |
| SRI | Stanford Research Institute |
| SRM | staff requirements memorandum |
| SRP | Standard Review Plan |
| SRSS | square root of the sum of the squares |
| SRST | spent resin storage tank |
| SRV | sump recirculation valve |
| SRWS | solid radioactive waste system |
| SSA | safe shutdown analysis |
| SSC | structures, systems, and components |
| SSCIV | secondary system containment isolation valve |
| SSE | safe shutdown earthquake |
| SSI | soil-structure interaction or secondary system isolation |
| SSS | secondary sampling system |
| SSSI | structure-soil-structure interaction |
| SST | station service transformer |
| STPA | System-Theoretic Process Analysis |
| SUNSI | sensitive unclassified non-safeguards information |
| SVM | schedule and voting module |
| SWIS | service water intake structure |
| SWMS | solid waste management system |
| SWV | shear wave velocity |
| Acronym or Abbreviation | Description |
| SWYD | switchyard system |
| TA | task analysis |
| TAF | top of active fuel |
| TBC | Turbine Building crane |
| TBS | turbine bypass system |
| TBVS | Turbine Building HVAC system |
| T/C | thermocouple |
| TCU | temperature control unit |
| TDH | total dynamic head |
| TDS | total dissolved solids |
| TEDE | total effective dose equivalent |
| TGB | Turbine Generator Building |
| TGS | turbine generator system |
| TGSS | turbine gland sealing system |
| THD | total harmonic distortion |
| TIHA | treatment of important human actions |
| TIT | temperature indicating transmitter |
| TLD | thermoluminescent dosimeter |
| TLOSS | turbine lube oil storage system |
| TMI | Three Mile Island |
| TMR | triple module redundancy |
| TNDT | nil ductility temperature |
| TOC | top of concrete |
| TRS | test response spectrum |
| TS | technical specifications |
| TSC | technical support center |
| TSTF | Technical Specification Task Force |
| TUF | tubular ultrafiltration |
| UAT | unit auxiliary transformer |
| UCRW | uncontrolled control rod assembly withdrawal at power |
| UCRWS | uncontrolled control rod assembly withdrawal from a subcritical or low power or startup condition |
| UDC | uniform Doppler coefficient |
| UHS | ultimate heat sink |
| UPS | uninterruptible power supply |
| URD | Utility Requirements Document |
| URS | uniform response spectrum |
| URS | upper riser assembly/section |
| USGS | United States Geological Survey |
| USI | unresolved safety issue |
| USM | uniform support motion |
| UTC | coordinated universal time |
| UWS | utility water system |
| V&V | verification and validation |
| VDU | video display unit |
| VIT | vibration indicating transmitter |
| VLA | vented lead-acid |
| VRLA | valve-regulated lead-acid |
| VRT | voltage regulating transformer |
| WDT | watchdog timer |
| WMCR | waste management control room |
| Acronym or Abbreviation | Description |
| WSW | wet solid waste |
| WTB | Waste Treatment Building |
| ZOI | Zone of Influence |
| ZPA | zero period acceleration |