Cherokee LNG plant multi-stream natural gas measurement system

Cherokee LNG plant for Yoast check (not visible on website)

Analytical Solutions and Products B.V. (ASaP) delivered a multi-stream natural gas sample and measurement system, housed in a robust and weatherproof cabinet. The analyzer cabinet features an automated and freely adjustable stream selection sequence for up to 8 inlet streams, covering the entire process.

Our customer Chart Industries, Inc is the main contractor responsible for suppling the entire LNG cold box, MR compressor, pretreatment, and deinventory system. The end user of the system is Atlanta Gas Light, operating under Southern Company Gas in Georgia, United States. ASaP values its collaboration with Chart, where strong engineering synergy results in performance and technical innovations to be proud of.

Micro gas chromatograph for versatile analysis

The Qmicro DynamiQ-X, a robust micro gas chromatograph, can manage up to 12 measurement streams efficiently. With a rapid cycle time of about 45 seconds and high repeatability (±0.025%), the DynamiQ-X supports detailed analysis of methane, ethane, nitrogen, BTEX, and other components. This system measures:

Summary of sample take-off and conditioning systems

Using hydrocarbon and water dewpoint data, the integrated probe regulator ensures reliable performance with:

• Temperature management: Thermal fins mitigate Joule-Thomson cooling effects.
• LNG vapor sampling: Heated regulator station with isolation, connected via tubing.
• Heated transport lines: Electrically traced and insulated heated lines for streams sensitive to condensation.
• Heated probe regulators: For stable sample integrity.
• Streamlined bypass: Flowmeters and automated selection controls.
• Sturdy design: Constructed with 316/316L stainless steel, PTFE, and Viton.
• Specifications: Compact size with direct connections to non-heated sample lines.

These setups guarantee operational adaptability while ensuring sample quality.

Safety, efficiency, and environemental highlights

The multi-stream system addresses operational needs:

• Gas detection and alarms: Integrated systems for LEL detection and issue notifications.
• Cylinder management: Predictive monitoring for carrier and calibration gases.
• TRACErase technology: Processes vent gases efficiently to prevent emissions.

These features maintain system efficiency and safety even under challenging conditions.

Integrated AIM technology for Cherokee LNG plant CAREFREE operation

The backbone of this system is a PLC paired with AIM Instrument Performance and Predictive Maintenance Software. This setup enables:

• Sample system and analyzer control
• Data collection and reporting
• Maintenance and performance tracking
• Alarm systems for flow, pressure, and operational faults
• Prediction of carrier and calibration gas cylinder usage

With real-time insights provided by AIM software, engineers can easily monitor and optimize system performance, reducing downtime and operational risks.

ASaP as a complete solution provider

ASaP is more than a supplier; we are a full-service solution provider for analytical systems in LNG applications. From the initial Request for Quotation (RFQ) to on-site commissioning, we ensure a seamless process. Our expertise covers:

• Providing detailed technical solutions and quotations.
• Handling design, procurement, assembly, and full in-house testing (FAT).
• Ensuring on-site commissioning (pending) for full system integration.

Our commitment to quality and efficiency ensures our clients receive robust, turnkey solutions tailored to their operational needs.

Contact our Cherokee LNG specialist today

For personalized assistance and further Cherokee LNG inquiries, please contact our specialist at ASaP. We are here to help and provide the support you need.