Brochure
20
Corrosion & Erosion
• Turbine blade erosion can lead to decreased per-
formance and blade failure
• Pitting may occur before vibration analysis can
detect a problem
• RVI can rapidly assess blade condition and equip-
ment can be scheduled for more detailed preven-
tative maintenance
• See page 7 - 8 for general description
• Sand erosion can occur at change in direction/
diameter in oshore production risers due to solids
ingestion, typied by a smooth surface with a sand
dune pattern
• Riser locations where sand erosion may occur are
dicult to access and inspect with conventional
ultrasonic and X-ray testing
• Permanently-installed sensors can be applied to
suspect areas for accurate monitoring without the
need for repeated mobilization of inspection per-
sonnel
• See pages 15 - 18 for general description
• HF unit ange integrity must be assessed per API 751
• Manual ange opening and inspection nearly as
costly as outright replacement
• UT-PA imaging can signicantly enhance detection
and sizing of ange face corrosion damage for
replacement prioritization for turnaround
• Proven to be accurate and cost eective over
conventional inspection methodologies
• See pages 9 - 10 for general description
Turbine Blade Erosion
Remote Visual Inspection (RVI)
Offshore Riser Sand Erosion via Installed
Sensors
Ultrasonic Testing (UT)
HF Unit Flange Face Corrosion
Ultrasonic Phased Array (UT-PA)
Catalyst and solid can cause severe damage to rotating
and stationary blades
Solid particles can generate rapid wall loss under proper
conditions in oshore risers
HF scale and corrosion can signicantly compromise
ange integrity