Case Study 122: LNG
Industry Sector: Burner Management
Vaporizer Control System

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PROCESS OR MACHINE AUTOMATED:
submerged combustion vaporizer control systems

NEW TECHNOLOGY APPLIED:
GE Fanuc 90-30 series PLC
GE QuickPanel HMI
Wonderware Intouch SCADA

PROJECT DESCRIPTION:
Staneco Corporation designed controls for multiple liquefied natural gas vaporizers for use in a re-gasification process at a peak shaving facility. Each vaporizer contained a large burner that heated a water bath for the evaporation process. Two PLC systems were utilized for control of each vaporizer; one system for burner management as required per the NFPA and one system for other process controls. All units had automatic ignition and bath temperature control. In addition to the gas control required to operate under normal conditions, interlocks were added to safely handle alarm conditions. Each control system provided feedback to the plant DCS.

PROJECT OUTCOME:
The addition of these peak shaving units enabled the plant to meet the critical requirements of peak consumption periods. Operators praised the ease of use provided by the control system and the ability to make adjustments to ensure optimal performance.

 
Burner Management: LNG