Strategic Corrosion Monitoring in Topside Applications. Tom Swihart GE Measurement & Control Solutions. Introduction. Rightrax products use permanently installed UT transducers to continuously measure wall thickness.
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GE Measurement & Control Solutions
Rightrax products use permanently installed UT transducers to continuously measure wall thickness.
Erosion, general and localized corrosion are detectable and measurable
Rightrax is available in 3 versions:
- Low temperature (-40°C to 120°C / -40°F to 248°F)
- High temperature (-20°C to 350°C /-4°F to 662°F)
- Ultra-high temperature to be released soon (500°C / 932°F)
All systems are non-intrusive
All installed versions have hazardous area certification
High return on investment possible < 1 year
After Choke Valve
96 Rightrax M2 sensors on 6 individual platforms
M2 sensors wired back to DL2 datalogger and Line Driver (LD) in hazardous area
Offshore Riser Monitoring
Sand erosion can occur at direction/diameter changes in offshore production risers due to solids ingestion. Erosion is typically a smooth surface with a sand-dune pattern.
Riser locations where sand erosion may occur are difficult to access and inspect with conventional UT or RT.
Permanently mounted UT array sensors can be applied to suspect areas for accurate monitoring without the need for manual access.
Platforms & FPSOs
Crude lines with chemical injection and/or water washes are subject to periodic inspections per API 570.
Many overhead lines have no platform access, making these inspections difficult and costly.
UT and RT can provide useful inspection data, but costly to obtain based on access equipment.
Corrosion monitors can be permanently installed and accessed on a continuous basis to improve operational knowledge.
Platforms & FPSOs
Chemical injection (MEG, etc.) and mixing points have potential for extreme corrosion failures.
API, UL, CSA-US and NACE provide specific process guidelines to minimize injection point damage.
Installed strategic corrosion monitoring M2 strips can provide dynamic monitoring of suspected injection point damage locations without repeated access.
Unmanned installations off the coast of Indonesia require frequent wall thickness monitoring due to unpredictable sand erosion
6"& 8" lines with 6-8 mm wall thickness
Erosion rates can be up to 4 mm / 24 hours
Monitoring is required; location is remote
Normal operational temperature: 80°C
Value and cost saving:
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