SIS has performed LNG peak shaving control systems for grass root projects, total facility system upgrades, liquefaction upgrades and system enhancements. This includes:

• HMI graphics
• IO testing and field commissioning support
• Process controls including:
  • Boil off vapor compression control
  • Liquefaction pretreatment control
  • MRL loop control
  • Vaporization and flow rate control
  • Safety system monitoring and shutdown

Some locations that we have worked at include:

• Bentonville LNG – PNG
• Bushy Park LNG – SCANA
• Chattanooga LNG – AGL Resources
• Cherokee LNG – AGL Resources
• Huntersville LNG – PNG
• Jacksonville LNG – AGL Resources
• Kingsport LNG – EnBridge
• Macon LNG – AGL Resources
• Nashville LNG – PNG
• Riverdale LNG – AGL Resources
• Robeson LNG – PNG
• Salley LNG – SCANA
• Trussville LNG – AGL Resources

1. Southern LNG’s Elba Island: After being idle for 20 years, SIS provided the following for the re-commissioning of the facility:
   • Process controls including
     • LNG tanker unloading
     • LNG tank level and pressure control
     • Booster, primary and secondary pump control
     • Vaporization and flow rate control
     • Boil off vapor compression control
     • Safety system monitoring and shutdown
     • Third-party communications including chromatographs, ship unloading arms, mooring tension systems and meter station RTUs.
   • HMI graphics
   • IO testing and field commissioning and training
2. Southern LNG’s Elba Island: For the train II and train III expansions, SIS provided:
   • Process control software
   • HMI graphics
   • IO testing and field commissioning support for the train II and train III expansions.
3. Gulf LNG: Field support for general maintenance and system enhancements.

SIS has performed dry bed and glycol dehydration control systems for grass root projects, total facility system upgrades, and system enhancements. Control systems include:

• Tower sequencing
• Gas flow control
• Regeneration flow control
• Gas cooler control
• Regeneration heater control systems
• Safety monitoring.
  Some locations that we have worked at include:
  • Bear Creek Storage – Southern Natural Gas
  • Golden Triangle Storage – AGL Resources
  • Jefferson Island Storage & Hub – AGL Resources
  • Toca Dehy – Southern Natural Gas

SIS has performed compressor station automation systems for grass root projects, total facility system upgrades, and system enhancements. Control systems include:

• Yard valve sequences
• Station set point control
• Gas cooling control
• Pressure, flow, temperature and level control
• Engineering calculations
• Safety system monitoring and shutdown control.
  Some pipelines that we have worked on include:
  • AGL Resources
  • ANR Pipeline
  • Columbia Gas
  • Destin Pipeline
  • East Tennessee Natural Gas Pipeline
  • Great Lakes Pipeline
  • Natural Gas Pipeline
  • Piedmont Natural Gas
  • Sea Robin Pipeline
  • Southern Natural Gas
  • Tennessee Gas Pipeline

• Yard valve sequences
• Gas heater controls
• Flow and pressure controls
• Engineering calculations
• Safety system controls.
  Some locations that we have worked at include:
  • Bear Creek Storage – Kinder Morgan
  • Central Valley Gas & Storage – Pivotal Energy
  • Coastal Caverns – Vitol
  • Golden Triangle Storage – AGL Resources
  • Jefferson Island Storage & Hub – AGL Resources
  • Saltville Storage – EnBridge

SIS has developed and implemented the following controls systems for reciprocating engines:

• Air-to-fuel ratio control
• Alarm & shutdown monitoring & control
• Engineering calculations for torque, capacity, horsepower, rod load, etc.
• First out counter messaging
• Governor speed control
• Historical run hours & volume logging
• Ignition timing control
• Jet assist air pressure control
• Power & compressor cylinder lube monitoring
• Torque/unloader control
• Unit start and stop sequencing
• Unit valve sequencing
• Water & oil temperature control

SIS has developed and implemented the following controls systems for oil storage and pumping facilities:

• Automatic valve sequencing
• Storage tank mixing & batching control
• Drag reducing agent (DRA) pump, tank and flow control
• Engineering calculations, flow rate, volumes, oil density, etc.
• LACT monitoring & controls systems
• Historical run hours & volume logging
• PD & centrifugal pump monitoring & control
• Pressure & flow rate control
• Safety system monitoring & control
• Storage tank level control
• Sump tank level control & system shutdown
• Tanker truck unloading monitoring & control