Component maintenance system

• US 5,657,245 A
• Filed: 11/09/1994
• Issued: 08/12/1997
• Est. Priority Date: 11/09/1994
• Status: Expired due to Term

• Current Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Original Assignee: Westinghouse Electric Company LLC (Brookfield Asset Management Incorporated)
• Inventors: Petrosky, Lyman J., Bach, Chris W., Hecht, Michael D., Ira, Stephen M., Driggers, John M., Orbon, Steve J., Boone, Paul J.
• Primary Examiner(s): Voeltz, Emanuel T.
• Assistant Examiner(s): SHAH, KAMINI S
• Application Number:
  US08/281,713
• Time in Patent Office: 1,007 Days
• Field of Search: 364/492, 364/494, 364/505, 364/511, 364/512, 364/552, 364/571.01, 364/571.04, 364/571.07, 376/216, 376/252, 376/261, 324/232, 324/220, 324/228, 73/601, 73/620-623
• US Class Current: 700/287
• CPC Class Codes: G06F 11/2268 Logging of test results
• CPC Class Codes: G21C 17/003 Remote inspection of vessels, e.g. pressure vessels
• CPC Class Codes: Y02E 30/30 Nuclear fission reactors

Abstract

A component maintenance system having a network linked to a data acquisition system, a data analysis system, a historical file of component design and inspection information, and a diagnostic system having the capability to perform structural analysis of discontinuities identified by the data acquisition system. The network nodes may be located apart from each other; for example in the maintenance of a nuclear power plant steam generator, the data acquisition system may be located in a high radiation area while the data analysis system is safely located away from the radiation areas. Furthermore, the diagnostic system and the file of component design and inspection history information may be centrally located and shared to support component evaluations being conducted in numerous geographic locations. Network communication facilitates the rapid evaluation of discontinuities, thereby permitting the inspection plan to be modified as the inspection results are obtained.

Claims

1. A system for maintaining a component comprising;

an eddy current inspection system operable to acquire inspection data associated with said component, said inspection data representing a discontinuity in said component;

a means for analyzing said inspection data;

a means for storing information; and

a means for diagnosing the structural effect of said discontinuity on said component;

wherein said inspection system and said means for analyzing, storing and diagnosing are interconnected by a data link, such that an output of said inspection system is provided as input to said analyzing means, and an output of said analyzing means and an output of said storing means are provided as real time inputs to said diagnosing means, such that the effect of said discontinuity may be diagnosed on a real time basis at a location remote from said component.

2. The system of claim 1, wherein said storing means contains operational data regarding said component, and further comprising said diagnosing means being operable to identify a relationship between a progression of said discontinuity over time said operational data.

3. The system of claim 1, further comprising a means for positioning connected to said data link, said positioning means operable to position eddy current inspection system relative to said component.

4. The system of claim 3, wherein said component comprises a nuclear power plant steam generator, said positioning means comprises a robotic arm, said analyzing means comprises an eddy current data analysis system, said information stored by said storing means comprises design data for said steam generator, and said diagnosing means comprises a structural analysis system.

5. The system of claim 4, further comprising a performance monitor connected to said data link and operable to collect data regarding the performance of said system.

6. The system of claim 5, wherein said performance monitor is operable to generate maintenance recommendations for said system.

7. The system of claim 4, wherein the information stored by said storing means comprises information regarding repairs made to said component.

8. The system of claim 1, wherein said system comprises at least one computer connected to said data link, and further comprising a means for controlling software loaded on said computer operable to provide on-line updates to said software.

9. The network of claim 1, further comprising a means for monitoring connected to said data link.

10. A system for maintaining a nuclear plant steam generator comprising;

a means for storing data operable to store inspection data and operational data associated with said nuclear plant steam generator;

an eddy current data acquisition system operable to acquire inspection data associated with a discontinuity in a tube of said steam generator;

a means for analyzing said inspection data to quantify the location and size of said discontinuity;

a means for diagnosing the effect of said discontinuity on the structural integrity of said tube, said means for diagnosing being operable to identify a relationship between a change in said discontinuity over time and said operational data; and

a data link operable to interconnect said means for storing data, said eddy current data acquisition system, said means for analyzing, and said means for diagnosing, such that data associated with a discontinuity is acquired by said eddy current data acquisition system located at said nuclear plant, and said data is analyzed and the effect of said discontinuity is diagnosed on a real time basis at a location remote from said nuclear plant.

11. The system of claim 10, further comprising a performance monitor connected to said data link and operable to collect data regarding the performance of said system.

12. The system of claim 10, wherein said system comprises at least one computer connected to said data link, and further comprising a means for controlling software loaded on said computer operable to provide on-line updates to said software.

13. The system of claim 10, wherein the information stored on said means for storing data further comprises design data for said steam generator.