Brochure

Corrosion & Erosion
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Corrosion & Erosion
• Ring Joint anges have had signicant cracking
from mechanical and Stress Corrosion Cracking
• Typically discovered by PT or manual UT after
anges have been opened during Turnaround.
May extend unit downtime
• PA-UT signicantly enhances detection and sizing
of cracking damage while vessel is in service or
just o line to allow for repair/replace planning
• See Pages 7 - 10 for general description
• API 653 mandates periodic internal tank oor
inspection with volumetric assessment
• Magnetic Flux scanners provide rapid general oor
condition assessment
• Phasor DM can rapidly “prove-up” scanning results
with greater detail than conventional UT
• See Pages 9-10 for general description
• Instrument Penetrations have caused signicant
reliability concerns at nuclear plants
• Dicult access and need for detailed inspection
data required multi-modal approach for proper
integrity assessment
• Combination of RVI, UT and Eddy Current tech-
niques help assess BMI guide tubes to prioritize
need for repair
• See Pages 7 - 10 and 13 for general description
• Reactor Euent Air Coolers have suered numer-
ous Erosion/Corrosion incidents due to Ammonium
Bisulde erosion and Ammonium Chloride corro-
sion
• Rigorous monitoring of operating conditions must
be followed by extensive UT and RT surveys
• Rightrax installed sensors allow continuous or
intermittent monitoring of suspect areas
• See Pages 15 - 18 for general description
• Extended downtimes and idle service water sys-
tems have promoted microbiological corrosion
• MIC can be highly localized and cause complete
penetration in short time periods
• Use RVI or RT or both in complementary mode
• See Pages 7 - 10 and 13 for general description
• Chemical and Process injection without proper
control has been responsible for signicant indus-
try incidents
• API 570 mandates enhanced inspections of spe-
cic locations downstream of these injections
• Rightrax permanently mounted sensors can be
installed in these locations and provide continuous
thickness and prole readings in these locations
• System installation can be responsive to process
changes without deploying personnel resulting in
increased data integrity at reduced costs
• See Pages 15 - 18 for general description
Bottom Mounted Instrumentation (BMI)
Remote Visual Inspection/Ultrasonic Testing (RVI/UT)
Hydro-Processor Effluent Air Cooler
Rightrax Installed Sensor (UT)
Service Water Piping Corrosion
Remote Visual Inspection/Ultrasonic Testing (RVI/UT)
High-Pressure Piping Ring-Joint Cracking
Remote Visual Inspection/Ultrasonic Testing (RVI/UT)
Tank Bottom Pitting
Ultrasonic Testing Phasor DM (UT)
Injection Point Corrosion
Rightrax Installed Sensors (UT)
Bottom mounted Instruments present a challenge for
mechanical Integrity assessment.
REAC pipe condition can be continuously assessed regard-
less of process service conditions in typical operation
MIC can be highly localized and cause penetration in a
short period of time
Ring Joint Cracking can be signicant enough to neces-
sitate replacement. PA –UT can be used to detect and
size damage on line
Phasor DM can be used to accurately quantify the extent
and severity of general wall loss detected in tank bottoms
by global scanners
Rightrax sensors can be applied directly over an Injection
Point area of concern and provide continuous wall thick-
ness monitoring