The MEG ARTS® system provides highly accurate and reliable analysis of Mono-Ethylene Glycol or other fluid received subsea from a pipeline conditioning train

The system can operate autonomously whilst the support vessel remains at the launch end of the pipeline. When an ROV is available at the pig receiver the real-time data can be monitored and sampling controlled in real time. The flowing MEG is analysed for conformity with project purity, dryness, or hydrate suppression requirements. Values of density, pressure and temperature are logged and displayed on a high visibility OLED display. Up to 7 samples are captured for recovery to surface to confirm composition.

Key Benefits

• Pipeline conditioning assured through real time data, logged data, and physical sampling
• Graphical summary of pipeline conditioning operation from downloaded data
• Automatic sampling eliminates need for vessel at, or transit to, receipt location resulting in significant savings in vessel time and costs.
• Optional ROV sampling allows for multiple samples from a single switch meaning ROV does not need to relocate to different valves
• Samples can be captured from specified train positions with ROV sampling

Specification

Maximum operating depth: 3000m (9800ft)
Minimum operating depth: 50m for sample from 25m length MEG batch at 0.35m/s
160 ft for sample from 80 ft length MEG batch at 1.1 fps
Maximum pig receiving speed: 0.5m/s (1.6 fps) in 20” pipeline with 4” discharge
0.75m/s (2.5 fps) in 8” pipeline with 2” discharge
Density sensor accuracy: ±0.5 kg/m3 (0.6% span seawater to pure MEG). Range 500 kg/m3 to 1500 kg/m3
Display: 63 mm x 33 mm (2.5” x 1.3”)
Logging Capacity: 258,000 entries at 1 s to 10 s interval, memory wrap option. Each entry contains Date, Time, Density, Pressure, Temperature an Sample Status
Battery Life: >10 days
Volume of each sample: 0.35 L (13 US fl oz)
Operating Temperature Controller: -5°C to +30°C (23°F to 86°F)
Storage: -20°C to +50°C (-4°F to 122°F)
Maximum gross weight in air: 500 kg (1100 lbs)
Overall dimensions: 1250 mm x 900 mm x 410 mm

 Materials

Skid: Stainless Steel
Controller and sensor housings: Alloy Bronze CA104
Valves, tubing and ROV Switches: Stainless Steel
Sample Cylinders: Duplex Stainless Steel