Back Pressure (or Backpresssure)
Barrier to Entry (or Economic Barrier to Entry)
Base Anhydride (Basic Anhydride)
Basic Process Control System (BPCS)
BAT (Best Available Techniques)
bbl/d (bbl/day or BPD, Barrels per Day)
BEDD (Basic Engineering Design Data)
BEDD (Basis of Engineering and Design Data)
BEDQ (Basic Engineering Design Questionnaire)
BEDQ (Basis of Engineering and Design Questionnaire)
Beer Lambert Law (or Beer's Law, or Lambert Beer Law, or Beer Lambert Bouguer Law)
Best Available Techniques (BAT)
Beta (β) Particle and Radiation
Bid/ No-bid (Go/ No-go or Proposal/ No-proposal) Decision
Bid/ No-bid Evaluation Criteria
BIM (Building Information Modeling)
Binary Cycle (Geothermal Power Plant)
Biogasification or Biomethanization
Biological Environmental Exposure Levels (BEELs)
Biological Treatment Technology
Biomass Energy (or Biomass Power)
BIPM (International Bureau of Weights and Measures)
Bipolar Electrodialysis (BPED)
BIS (Bank for International Settlements)
BLM (Building Lifecycle Management)
Blood Alcohol Concentration (BAC)
BLS (Bureau of Labor Statistics)
BMS (Burner Management System)
BOD (Biological (or Biochemical) Oxygen Demand)
BOE (Barrel of Oil Equivalent)
BOEM (Bureau Ocean Energy Management)
Boiling Liquid Expanding Vapor Explosion (BLEVE)
BPCD (Barrel Per Calendar Day)
Break Even (or Breakeven Point)
Brexit (British Exit: The UK's EU Referendum)
Brush Off Blast Cleaned Surface
BS&W (Bottom Sediment and Water)
BSI (British Standards Institution)
BTX (Benzene, Toluene and Xylene)
Budgetary Cost Estimate (Class 3)
Budgeted Cost for Work Performed (BCWP)
Budgeted Cost for Work Scheduled (BCWS)
Business Continuity Management Institute or BCM Institute
Business Continuity Plan (BCP)
Business Cycle (or Economic Cycle)
Business Day (or Normal Work Day)