Resources Contact Us Home
Method of establishing a nuclear reactor core fuel assembly loading pattern

Image Number 2 for United States Patent #6931090.

All possible loading patterns for a nuclear reactor core are searched and optimized for compliance with design constraints. The fuel inventory is divided into a few batches according to coarse levels of reactivity. A recursive enumeration process identifies patterns meeting selected core position constraints, which can be user modified to adjust the search space size. For the batch loading patterns satisfying the constraints, the batches are divided into several smaller batches. A sensitivity matrix linearizing the relationship between fuel assembly position and the depletion model is processed through mixed integer linear programming with branching and bounding to identify an optimal daughter loading pattern. The process is repeated through several levels of batch refinement and selection of optimal daughter patterns, including a level where burnable absorbers are assigned to feed assemblies, until the individual fuel assembly level is reached. The multiple optimal patterns remaining provide a range of solutions.

  Recently Added Patents
System for collecting computer application usage data of targeted application programs executed on a plurality of client devices
Method for producing semiconductor substrate, semiconductor substrate, method for manufacturing electronic device, and reaction apparatus
Semiconductor devices and methods for changing operating characteristics and semiconductor systems including the same
System and method for providing private demand-driven pricing
Diagnostic data interchange
Digital microwave radio link with adaptive data rate
MEMS structure and method for making the same
  Randomly Featured Patents
Electrostatic transducer backplate having open ended grooves
Ceramic filter with a coplanar shield
Method and system for externalizing session management using a reverse proxy server
Method and apparatus for pressure forming pipe bells
Electrical coupling apparatus and method
Apparatus and method for decomposition of chemical compounds by increasing residence time of a chemical compound in a reaction chamber
Cylinder housing for air compressor
Vapor generating and recovery apparatus and process
Method for determining muscle dysfunction
2- and 2.5-substituted phenylketoenols