Brochure

Corrosion & Erosion
25
• 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 qualication 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 suer 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 signicant wall loss of
piping
• Remote/inaccessible locations generally allow for
periodic monitoring with Crane/scaold access
only
• Rightrax permanently-mounted sensors provide
recordable, remotely accessible , high quality
documentation of wall condition
• See Pages 15 - 18 for general description
Nuclear Containment Building: IWE/IWL
Remote Visual Inspection (RVI)
Dead-End Dead-Leg Corrosion
Digital and Computed Radiography (DR & CR)
Crude Unit Overhead Corrosion
Rightrax Installed Sensor (UT)
Remote Visual Inspection provides recordable, indexed,
high quality documentation
Dead Ends/Dead Legs may suer signicantly higher cor-
rosion rates than adjacent piping components.
Crude Unit Overheads may suer severe corrosion due to
crude slate changes/treatment misapplications but require
signicant mobilization preparation for inspection