Houston : Calcutta :
Basic Engineering
  Process Flow Diagrams
  Piping & Instrumentation Diagrams
  Utility Flow Diagrams
  Flare System Design
  Heat and Mass Balances
  Hydraulic Analysis - pressure drop calculations, line sizing
  Pressure Safety Valve / Breather Valve Rating and Documentation
  Equipment Lists
  Equipment & Instrument Datasheets
  Process Control Strategy
  Instrument Lists
  Basic Piping Material Specifications
  Line Lists
  Utility Summaries
  Effluent Summaries
  Indicative Plot Plan and General Arrangements
  Cause & Effect Diagrams
  Hazop studies
  Operation and Maintenance Manuals