Brochure

Corrosion & Erosion

• 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

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)

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