GE Digital Cassettes Folleto

Corrosion & Erosion

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

Radiographic Testing (RT)

Ultrasonic Phased Array (UT-PA)

Remote Visual Inspection (RVI)/Eddy Current Testing (ET)

Remote Visual Inspection (RVI)

Remote Visual Inspection (RVI)

Radiographic Testing (CR & DR)

Carbon steel piping has failed catastrophically from FAC

Elevated temperature damage can occur with increasing 
age and operation severity

Air fin heat exchanger tube damage can cause significant 
operational problems

Tip damage (rubbing) can be identified by vibration analy-
sis and monitored off line with RVI

Refractory damage can be unexpected and lead to signifi-
cant turnaround repair

Weld defects can cause significant equipment inspection 
challenges