Advancement in eddy current test technology for steam generator tube inspection

Journal Article · Sun Jan 01 00:00:00 EST 1995 · Materials Evaluation; (United States)

OSTI ID:6618787

Dodd, C V; Pate, J R; Allen, J D ^[1]

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1. Oak Ridge National Lab., TN (United States)

The Oak Ridge National Laboratory (ORNL) is developing and improving eddy current inspection methods for steam generator tubes in the nuclear industry. The authors have improved the fit and accuracy of the automatic analysis of eddy current data by the use of a back propagation method for fitting instrument readings to test properties. In addition, they have written software that performs an analysis similar to some industry standard analyses, which allows the ORNL and industry analyses to be compared. Their automatic analysis can be applied immediately to the detection of probe wear. They have interfaced their analysis programs to the Zetec MIZ-18, and interfaced their IBM PC-AT clones to the Hewlett Packard computer system used for industry standard data analysis. They can now analyze industry plant inspection data on optical disks using the ORNL multiple property methods. A supplementary method, a neural network method that looks directly at the raw images and will correctly categorize the defects, has been developed. Although this method has not been as thoroughly developed as the multiple property method, it has performed very well on a limited set of samples.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 6618787
• Journal Information: Materials Evaluation; (United States), Vol. 53:1; ISSN 0025-5327
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
42 ENGINEERING
EDDY CURRENT TESTING
TECHNOLOGY ASSESSMENT
NUCLEAR POWER PLANTS
STEAM GENERATORS
TUBES
DATA ANALYSIS
FAILURES
NEURAL NETWORKS
BOILERS
ELECTROMAGNETIC TESTING
MATERIALS TESTING
NONDESTRUCTIVE TESTING
NUCLEAR FACILITIES
POWER PLANTS
TESTING
THERMAL POWER PLANTS
VAPOR GENERATORS
220200* - Nuclear Reactor Technology- Components & Accessories
420500 - Engineering- Materials Testing