Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Proximity search methods using tiles to represent geographical zones
Gas cap removal tool
Operation controlling apparatus
Incentive based recommendation method for mobile station content
Eyeglass component
Management of temporal data by means of a canonical schema
Tire tread
  Randomly Featured Patents
Load positioning container chassis
Tablet computer keyboard-case
Shoe
Method of preparing and use of prodrugs of betulinic acid derivatives
Variable mass flow rate solid propellant grain
Page mode and nibble mode DRAM
Device for analyzing substances by means of thin layer chromatography
Wall organizer
Selectively operable industrial truck
Polymer blends containing polymer of .beta.-hydroxybutyric acid and chlorine or nitrile group containing polymer