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
Wafer-level chip scale package
Generating package profiles in software package repositories using selective subsets of packages
Method and apparatus for managing communication services for user endpoint devices
Automated synchronization of design features in disparate code components using type differencing
DNA promoters and anthrax vaccines
Magnifying glass
  Randomly Featured Patents
Biaxially oriented polypropylene film to be metallized a metallized biaxially oriented polypropylene film and a laminate formed by using it
Method for combiner cardiac pacing and defibrillation
Controlled rate exerciser and method of conditioning
Microwave pulse compressor using switched oversized waveguide resonator
Quinazoline derivatives useful as anti-tumor medicament
Vehicle wheel cover retention system and method for producing same
High availability system allowing conditionally reserved computing resource use and reclamation upon a failover
Engine analyzer waveform display with a buffer region
Multiple station exercise apparatus
Propellant tank resupply system