GE Digital Cassettes Folleto

Corrosion & Erosion

Corrosion & Erosion

•   Crude Unit Overhead heater tubes and lower alloy 

convection crossover piping when higher TAN op-

portunity crudes are processed

•   Periodic piping TML’s and spot UT may be not cap-

ture events that could cause significant wall loss of 

piping

•   Inaccessible locations generally do not allow for 

periodic monitoring 

•   Rightrax permanently mounted sensors  provide 

recordable, remotely accessible , high quality 

documentation of wall condition

•   See Pages  15 - 18 for general description

•   Rapidly assess damage mechanism for expedited 

corrective actions

•   Instant RVI diagnosis with experiences can pro-

duce immediate repair/plug/bring in additional 

NDT technique decisions

•   Use of RVI with experienced plant personnel can 

greatly reduce outage duration

•   Inspection provides recordable, indexed, high qual-

ity documentation for review 

•   See Pages 7-8 for general description

 

•   10CFR 50.55a requires inspection of the entire 

surface area of the containment building

•   Containment liner and external extended surface 

must be inspected in accordance with ASME Sec-

tion XI Subsections IWE and IWL

•   Auto pan-tilt-zoom functions based on plant ge-

ometry & input grid for recordable, indexed, high 

quality documentation with 100% repeatability

•   Capable of VT qualification with reduced personnel 

exposure and increased data integrity 

•   See Pages 7 -8 for general description

•  Intentional and unintentional stagnant piping legs 

and connections may have signigicantly higher 

corrosion conditions than existing pipe compo-

nents

•  Piping TML’s and spot UT may be misleading as to 

connection condition

•  DR and CR images provide measurable, record-

able, remotely accessible, high-quality documenta-

tion of condition

•  Images can be archived in typical plant Data Man-

agement systems 

•  See Pages 11 - 12 for general description

•   Crude Unit Overhead lines may suffer high inter-

mittent corrosion rates due to crude slate changes 

coupled with inadequate chemical corrosion con-

trol application

•   Periodic piping TML’s and spot UT may be not cap-

ture events that could cause significant wall loss of 

piping

•   Remote/inaccessible locations generally allow for 

periodic monitoring with Crane/scaffold access 

only

•   Rightrax permanently-mounted sensors  provide 

recordable, remotely accessible , high quality 

documentation of wall condition

•   See Pages  15 - 18 for general description

•   Phased Array capability in readily portable equip-

ment

•   Assess damage extent and improved sizing from 

field personnel

•   Improved inspection productivity in a sharable 

format

•   Obtain better information for RBI and FFS Evalua-

tions

•   See Pages 9 - 10 for general description

Remote Visual Inspection (RVI) 

Digital and Computed Radiography (DR & CR) 

Rightrax Installed Sensor (UT) 

Rightrax Installed Sensor (UT)

Remote Visual Inspection (RVI)

Ultrasonic Testing (Phasor CV/DM)

Remote Visual Inspection provides recordable, indexed, 
high quality documentation

Dead Ends/Dead Legs may suffer significantly higher cor-
rosion rates than adjacent piping components.

Crude Unit Overheads may suffer severe corrosion due to 
crude slate changes/treatment misapplications but require 
significant mobilization preparation for inspection

Crude Unit Convection Cross-Over’s may suffer severe cor-
rosion due to crude slate changes to higher TAN Crudes

RVI with experienced personnel can provide rapid damage 
mode identification
 

Phasor CV/DM has Dual Element Phased Array capability 
for accurate, rapid damage sizing