Liquefied Natural Gas (LNG) Conversion and Storage Facility- Controls Upgrade


Oil and Gas

Business Issue

Obsolete and unreliable pneumatic control system, instrument and valves.  Worked with customer to scope transition to state-of-the-art control system, measurement, valve positioners, and asset management solutions.

Project Summary

Conversion of the entire pneumatic control system to DeltaV process automation system, with addition of new field electronic measurement devices and valve positioners with asset management capabilities.  The goal is to improve reliability and enhance operations and maintenance.  The system was installed, wired and cutover in-between vaporization and liquefication processing, while keeping balance of plan on-line.  Operators were trained while on site.

Scope Responsibility

Cornerstone Controls was responsible for the following areas:

  • Project management of the controls team and electrical subcontract for turnkey project delivery.
  • Specification, procurement, and installation of field devices.
  • Automation engineering design and development of DeltaV control system.
  • Control system hardware design, layout, and installation within the constraints of the existing panel board.
  • Field wiring schedule.
  • Commissioning and Start-up of instruments, valves, and control system.
  • Training of operators.


  • Successful cutover with no lost production.
  • Project was on time and within budget.
  • Operator acceptance and utilization of new control system.
  • Remote monitoring of operations to improve staff utilization.