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INDEX OF ABBREVIATIONS
ADC Analogue to Digital Converter
ALU Actuator Logic Unit
AOO Anticipated Operational Occurrences
AP Automation Processor
APU Acquisition and Processing Unit
CCF Common Cause Failure
CDF Core Damage Frequency
CI/BOP Conventional Island/Balance Of Plant
CL Closed Loop
CPU Central Processing Unit
CU Control Unit
DAC Digital to Analogue Converter
DBC Design Basis Condition
DBE Design Basis Event
DEC Design Extended Condition
DiD Defence in Depth
EPROM Electronic Programmable Read Only Memory
EPR™ European Pressurized Reactor
EUR European Utility Requirements
FG Fission Gas
FMC Fast Measurement Computer
FUM FUnctional Module
GW GateWay
HMI Human-Machine Interface
I&C Instrumentation&Control
I/O Input/Output
IAEA International Atomic Energy Agency
IRWST In containment Refuelling Water Storage Tank
ISIP Inter Synoptic Indicator Panel
IT Information Technology
LCO Limiting Conditions of Operation
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LWR Light Water Reactor
MCR Main Control Room
MSI Monitoring and Service Interface
NCSS Non-Computerized Safety System
NI Nuclear Island
NP Nominal Power
OL Open Loop
OT Operating Terminal
PACS Priority and Actuator Control System
PAS Process Automation System
PI Panel Interface
PICS Process Information and Control System
PIE Postulated Initiating Events
PII Process Input Image
PIPO Inter Workstation Console
PIPS Process Instrumentation Pre-processing System
POI Process Output Image
POP Plant Overview Panel
PRZ Pressurizer
PS Protection System
PSA Probabilistic Safety Assessment
PSIS Inter-Panel Signalisation Panel
PU Processing Unit
QDS Qualified Display Screen
RCSL Reactor Control, Surveillance and Limitation
RAID Redundant Array of Independent Disks
RAU Remote Acquisition Unit
ECS
ARE Feedwater Flow Control System
EBA CSVS Containment Sweeping Ventilation System
RCP RCS Reactor Coolant System
RCV CVCS Chemical and Volume Control System
REA Reactor Boron and Water Makeup system
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RPE NIVDS Nuclear Island Vent and Drain System
SEC Essential Service Water System
SGN Nitrogen Gas Supply System
