fin - flex
- fin pipe
- fin tube
- final completion date
- final control element
- final delivery date
- final flow rate setpoint
- final product
- fire & gas system
- fire alarm & gas detection system
- fire and gas detection and protection system
- fire cock
- fire code
- fire fighting norms
- fire main
- fire photo detector
- fire resistance
- fire safety regulations
- fire water
- firing test
- first CBA reactor
- first stage compressors suction drum
- first stage discharge cooler
- first-order lag block
- first-stage deviation alarm setting for accumulated deviation
- first-stage deviation alarm setting for instantaneous flow rate
- fixed bed reactor
- fixed security post
- flake sulfur
- flame ionisation detector
- flame point
- flameproof
- flange rating
- flare ignitor
- flash
- flash drum
- flash mixing mixer
- flash mixing tank
- flat seam
- FLC
