Comparison of three electromagnetic NDE procedures using realistic feedwater heater mock-ups

Journal Article · Mon Feb 01 04:00:00 EST 1993 · Materials Evaluation; (United States)

OSTI ID:6483688

Krzywosz, K; Cagle, L Jr ^[1]

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1. Electric Power Research Inst., Charlotte, NC (United States)

Three electromagnetic NDE techniques are currently available to evaluate the tubing integrity of high-pressure feedwater heaters. They are remote-field eddy current, magnetically biased partial saturation eddy current, and flux leakage. To evaluate the performance of each technique, tubes containing filed-induced flaws were removed from retired bundles, characterized both destructively and nondestructively, and assembled into realistic mock-ups with tube support plates at their original locations. The assembled mockups were tested by vendors using three different inspection techniques. Each procedure was evaluated for its ability to detect and size field-induced flaws. Both flaw detection and NDE estimates were compared with known ground truth.' Based on the comparative test results, the most suitable inspection procedures evaluated to date for flaw detection and sizing were discerned. The evaluated high-pressure feedwater heater was made of SA 556-C2 carbon steel (CS) tubing.

• OSTI ID: 6483688
• Journal Information: Materials Evaluation; (United States), Journal Name: Materials Evaluation; (United States) Vol. 51:2; ISSN MAEVAD; ISSN 0025-5327
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420500* -- Engineering-- Materials Testing
ALLOYS
CARBON STEELS
COMPARATIVE EVALUATIONS
DATA
DATA ACQUISITION
DATA ANALYSIS
EDDY CURRENT TESTING
ELECTROMAGNETIC TESTING
EVALUATION
EXPERIMENTAL DATA
FEEDWATER HEATERS
HEATERS
INDUSTRIAL PLANTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
NONDESTRUCTIVE TESTING
NUMERICAL DATA
PERFORMANCE
STEELS
TESTING
TUBES