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
Watch dial
UV exposure method for reducing residue in de-taping process
Reuse of static image data from prior image frames to reduce rasterization requirements
LED illumination systems
Mobile terminal based on W-CDMA system having receive diversity function and system thereof
Method and apparatus for providing seamless call handoff between networks that use dissimilar transmission methods
  Randomly Featured Patents
Control device and method for electromagnetic needle selection in circular knitting machine
Tricyclic nucleosides or nucleotides as therapeutic agents
Method and apparatus for speech reconstruction within a distributed speech recognition system
Device for removing urine and/or feces
Method and apparatus for detecting misalignments in interconnect structures
Fuel cell optimum operation point tracking system in power supply device using fuel cell and power supply device provided with this fuel cell optimum operation point tracking system
Camera system, camera and lens apparatus
Game board
Active feedback pulsed measurement method
System and method for reducing apparent height of a board system