prim - prod
- primary & secondary controller
- primary direct
- prime
- printed circuit board
- printer
- printout message
- private automatic branch exchanger
- PRM
- probability of failure on demand
- probe attenuation
- process & instrumentation diagram
- process 95% response time
- process alarm
- process boiler
- process condensate
- process design scheme
- process engineering flow scheme
- process flow diagram
- process history database
- process I/O
