NERC Nuclear Energy Regulatory Commission
NESC National Electrical Safety Code
NG Network Gateway
NIC Network Interface Card
NIM Network Interface Module
ODA Open Data Access
ODVA Open DeviceNet Vendor's Association
OLE Object Linking and Embedding
O&M Operations and Maintenance
OM&S Oil Movements and Storage
OPC OLE for Process Control
OPE Off Process Environment
OSS Open Systems Services
PBP Performance-Based Pricing
PCC Precipitated Calcium Carbonate
Production Control Center
PCB Printed Circut Board
PCFA Point Card File Assembly
PCI Product Cost Index
Peripheral Component Interconnect
PCIM Personal Computer Interface Module
PDG Peripheral Display Generator
PHD Process History Database
PI Pulse Input
Plant Information System
PIPO Phase In / Phase Out
PI/PO Phase In / Phase Out
PIU Process Interface Unit
PKS Process Knowledge System
PLC Programmable Logic Controller
PLCG Programmable Logic Controller Gateway
PLNM Plant Network Module
PM Process or Project Manager
Preventive Maintenance
Production Management
Parts Management
PNI Process Network Interface
PNM Process Network Modem
PO Purchase Order
Pulse Output
PPM Plant Performance Monitor
PPO Plant Performance Optimizer
PSD Process Shutdown
PSM Process Safety Management
PV Process Variable
PWA Printed Wiring Assembly (i.e. Plug-in Board)
PWB Printed Wiring Board (no components Installed)