GE Digital Cassettes 브로셔
Corrosion & Erosion
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Corrosion & Erosion
• Compressor blade rubbing and damage can lead
to loss of efficiency and potential catastrophic
failures
• Tip damage may be significant before serious
vibration damage is noted
• RVI can allow rapid, recordable assessment of
compressor blade condition for evaluation by
experts in remote locations
• See pages 7 - 8 for general description
• Many refractory lining conditions can not be
evaluated by UT or RT
• Manual inspection requires staging, scaffolding
and proper confined space entry precautions
• RVI can be used to obtain refractory condition
assessment to prioritize internal inspection and
repair execution to expedite turnaround resources
• See pages 7 - 8 for general description
• Flow-assisted corrosion can occur in all piping that
contains water and water/steam mixtures
• Single liquid phase or dual phase (wet steam) as
shown below can cause severe local metal wast-
age
• Water treatment, design and metallurgy can help
prevent for damage
• Digital radiography can be used for volumetric
examination of specific suspect locations
• See pages 11 - 12 for general description
• High-pressure steam pipe may be exposed to
stresses above design and suffer high-temperature
creep damage causing industry incidents with
multiple fatalities and major consequences
• Field metallographic replication (FMR), magnetic
particle testing can only detect creep damage on
outer surface, not a volumetric assessment
• Phase Array can easily be field deployed to investi-
gate volumetric creep damage in areas of concern
in steam pipes
• See page 9 - 10 for general description
• Carbon steel tubes can be inspected by eddy
current techniques
• RVI can be rapidly used to assess specific tube
conditions for assistance in run-replace decisions
• Tubes can be accessed with minimum preparation
for fast evaluation of tube condition
• See pages 7 - 8 and 13 for general description
• Greatly enhance weld inspection and flaw sizing
with digital radiography
• Digital radiography is both qualitative and quanti-
tative
• Digital radiography produces fast scanning and
can go through insulation
• See pages 11 - 12 for general description
Flow-Assisted Corrosion Utility Steam Pipe
Radiographic Testing (RT)
Creep of High-Pressure Steam Pipe
Ultrasonic Phased Array (UT-PA)
Air Fin-Fan Tube ID Condition
Remote Visual Inspection (RVI)/Eddy Current Testing (ET)
Compressor Blade Damage
Remote Visual Inspection (RVI)
Refractory Vessel Damage
Remote Visual Inspection (RVI)
Weld Heat-Affected-Zone Inspection
Radiographic Testing (CR & DR)
Carbon steel piping has failed catastrophically from FAC
Elevated temperature damage can occur with increasing
age and operation severity
age and operation severity
Air fin heat exchanger tube damage can cause significant
operational problems
operational problems
Tip damage (rubbing) can be identified by vibration analy-
sis and monitored off line with RVI
sis and monitored off line with RVI
Refractory damage can be unexpected and lead to signifi-
cant turnaround repair
cant turnaround repair
Weld defects can cause significant equipment inspection
challenges
challenges