Eddy-current inspection for steam-generator tubing program quarterly progress report for period ending March 31, 1978

Technical Report · Sat Jul 01 04:00:00 EDT 1978

DOI:https://doi.org/10.2172/6798614· OSTI ID:6798614

McClung, R W; Dodd, C V; Deeds, W E

Eddy-current methods provide the best in-service inspection of steam generator tubing, but present techniques can produce ambiguity because of the many independent variable that affect the signals. The current development program will use existing mathematical models and develop or modify computer programs to design optimum probes, instrumentation, and techniques for multifrequency, multiproperty examinations. Interactive calculations and experimental measurements are made with the use of modular eddy-current instrumentation and a minicomputer. These establish the coefficients for the complex equations that define the values of the desired properties (and the attainable accuracy) despite changes in other significant variables. The final eddy-current instruments will contain on-board microcomputers for real-time data processing and interpretation. Current progress is being made in establishing the necessary computer codes, beginning in construction of some of the basic modules for the instrumentation, and acquisition of selected tubing reference standards.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6798614
• Report Number(s): ORNL/NUREG/TM-216; NUREG/CR-1064
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
BOILERS
EDDY CURRENT TESTING
ELECTROMAGNETIC TESTING
IN-SERVICE INSPECTION
INSPECTION
MATERIALS TESTING
NONDESTRUCTIVE TESTING
PERFORMANCE
POWER REACTORS
REACTORS
STEAM GENERATORS
TESTING
VAPOR GENERATORS