Columbia Energy completed the design of the Instrumentation & Controls for the Ontario Power Generation (OPG) Liquid Waste Treatment System (ALWTS).

Design included skid mounted terminal boxes for instrumentation and control signals. It included a booster pump skid, valve train skids, and ultraviolet light skid.

Columbia Energy provided EnergySolutions with:

Design Features

  • Canadian stamped electrical drawings
  • Software design philosophy
  • HMI screens
  • Panel arrangement


  • EnergySolutions
  • Ontario Power Generation Darlington Energy Complex

  •  Line and block diagrams
  • PLC logic diagrams
  • Digital and analog I/O wiring diagrams
  • Loop diagrams
  • Cable schedule design
  • PLC panel design
  • Software design descriptions


  • Engineering and Design
  • Instrumentation & Controls
  • Supporting Documentation