Corrosion-erosion trend monitoring and diagnostic system
First Claim
1. A method of assessing wall thinning rate of a containment system containing a substance and subject to erosion and corrosion, comprising the steps of:
- (a) storing characteristic data for at least one component of the containment system to be monitored;
(b) storing inspection data for the at least one component; and
(c) automatically evaluating the inspection data based on the characteristic data to produce an assessment of the wall thinning rate of the at least one component.
1 Assignment
0 Petitions
Accused Products
Abstract
A system for analyzing containment integrity of a containment system includes data storage for inspection data and characteristic data and a data evaluation processor for evaluating the inspection data. A data acquisition system is used for periodically obtaining wall thicknesses of selected components in the containment system. After data validation, the actual wall thicknesses are stored as the inspection data in the data storage. The data evaluation processor analyzes the present pipe wall integrity in light of stress calculated from the characteristic data including operational conditions and material properties. In addition, the data evaluation processor analyzes the trend in change of wall thickness to forecast future wall thicknesses.
-
Citations
15 Claims
-
1. A method of assessing wall thinning rate of a containment system containing a substance and subject to erosion and corrosion, comprising the steps of:
-
(a) storing characteristic data for at least one component of the containment system to be monitored; (b) storing inspection data for the at least one component; and (c) automatically evaluating the inspection data based on the characteristic data to produce an assessment of the wall thinning rate of the at least one component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
-
12. A system for assessing wall thinning rate of a containment system containing a substance and subject to erosion and corrosion, comprising:
-
storage means for storing characteristic data and inspection data for at least one component of the containment system to be monitored; acquisition means for acquiring the inspection data including actual wall thickness of the at least one component; and evaluation means for automatically evaluating the inspection data based on the characteristic data to produce an assessment of the wall thinning rate of the at least one component. - View Dependent Claims (13, 14)
-
-
15. A system for assessing containment integrity of piping systems in a pressurized water nuclear reactor powered electricity generation plant, comprising:
-
storage means for storing characteristic data and inspection data for a plurality of components in the plant; input means for inputting the characteristic data including component identification members, descriptions of component structure, pipe sizes, nominal wall thicknesses, material properties, locations of the components, operating conditions and inspection grids corresponding to the components; acquisition means for repeatedly acquiring the inspection data, including actual wall thicknesses measured at a plurality of points on each of the components and for validating the inspection data by comparing the inspection data with predetermined ranges to identify errors and to identify any of the points which indicate excessive wall thinning; and evaluation means for automatically evaluating the inspection data in dependence upon the actual wall thicknesses most recently acquired and stress calculated in dependence upon the characteristic data and for extrapolating from the inspection data acquired over a period of time for each of the components to predict future wall thicknesses of the components.
-
Specification