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Features of NM200E Core Verification Software

In this UI screen shot, the NM200E software has identified the core baffle and has found the location of all s-holes at this position of the mapping head. The software has recorded global coordinates of the fuel assemblies as well as the gaps between them and has determined that all are within tolerance.

The accuracy of the NM200E Core Verification System is based on proprietary Newton-developed machine vision software algorithms that accurately identify and measure the positions of all fuel assemblies in a PWR reactor and compares them with ideal positions (supplied by the reactor operators) even in the presence of significant thermals. 
The sophisticated software enables the precise global mapping of fuel assembly positions, including any degree of misalignment or nozzle rotation, while compensating for the visually distorting issues of thermal turbulence and light refraction. 
NM200Esoftware determines the positions of Westinghouse and AREVA PWR fuel assemblies based in part upon s-hole positions, and it is also able to map the more symmetrical Babcock and Wilcox nozzles.

There are two software applications that are provided with the NM200E system: 
- The utility application that allows the user to easily input all desired core and mapping specifications and
- The mapping application with the main user interface to guide the user through the core mapping operation. 
Both applications run on the control box utilizing the Ubuntu Linux operating system. No prior knowledge of the Linux operation system is required to operate the system.

Core Layout Utility Application

The Core Layout Utility has the following functions:

• Specify layout patterns for used and new fuel assemblies

• Specify gaps globally, or on a per-row or per-column basis

• Specify the North cardinal direction in relation to the core layout

• Specify the mapping head positions (stops) to be used for the core mapping

• Modify global settings such as the site name, label order and nozzle dimensions

Core Mapping Application

The Core Verification System is the primary application and interface used to perform a core mapping. During deployment, it displays processed images from the mapping head, and guides the operator through the mapping procedure by providing instructions and feedback on the current status of the process.