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
Scalable pixel coverage function-map
Method and apparatus for controllable communication
Apparatus for controllable delay cell and associated methods
Virtual image display device and manufacturing method of virtual image display device
Synchronization scheduling apparatus and method in real-time multi-core system
Magnetic circuit and speaker using same
  Randomly Featured Patents
Method of aligning optical waveguide device
Lateral MOSFET with modified field plates and damage areas
Microcircuit card body forming a medium for two electronic labels which activate indepently based on card body face
Conveyance stabilization assembly
Test for determining pyrogenic effect of a material
Sweater having an inside pocket with a doll inside the pocket and method
Polyurethane self-priming topcoats
Ergonomic mouse
Cosmetic composition for imparting to human skin a coloration resembling a natural tan
Digital still camera