Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for improving burnup credit of spent fuel

A spent fuel and burnup technology, applied in the field of spent fuel storage, can solve problems such as enhancing burnup credits

Active Publication Date: 2009-06-24
WESTINGHOUSE ELECTRIC CORP
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The total burnup number is used to determine the burnup credit, however, the shape of the axial burnup profile is not used to further enhance the burnup credit

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving burnup credit of spent fuel
  • Method for improving burnup credit of spent fuel
  • Method for improving burnup credit of spent fuel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] figure 1 The schematic diagram illustrates the arrangement of an array of neutron and gamma semiconductor detectors adjacent to spent fuel, according to an embodiment of the invention. Such as figure 1 As shown in , a system 1 is provided to measure neutron and gamma emissions from spent fuel. The term "neutron emission" as used herein is meant to include spontaneous fission (e.g. 244 Cm decay) and neutron production for (α,n) reactions. The term "gamma emission" means the production of gamma rays as an accompaniment to the spontaneous alpha and beta decay of radioisotopes. Nuclear fuel is usually provided in the form of at least one fuel assembly 2 protected by a top plate 3 and a bottom plate 4 . The fuel assembly 2 is thus provided in the form of a fuel rack. exist figure 1 In the embodiment shown in , an array 5 of semiconductor detectors 10 is arranged in series outside the fuel rack of the fuel assembly 2 . Electrical wires 6 or other suitable means are pro...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The method discloses a method for improving spent fuel burnup credit. A dimension reactive management system considers axial direction burnup shape data of a fuel component to confirm a placement component acceptability corresponding to other component in a storage container.

Description

technical field [0001] The present invention relates generally to the storage of spent nuclear fuel ("spent nuclear fuel") and, more particularly, to methods of calculating burnup credits for spent fuel rods. Background technique [0002] The transportation and shipment of spent fuel for final disposal is regulated by the Nuclear Regulatory Commission (NRC) under Title 10 of Part 71 of the Federal Code. To meet the requirements of 10CFR §71, shipping containers must be designed to be critically safe. Safety analyzes for these shipping containers are currently based on the assumption that the fuel assemblies are not irradiated (ie, have the same fissile content as the fuel assemblies shipped from the factory). In the case of spent fuel, this assumption is conservative, because the fissile isotope content of the assembly is much lower than that at the factory because the fissile isotope has been burned up due to the use of the fuel assembly in the reactor. [0003] The "fres...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G21C17/06
CPCG21C19/44G21F9/34G21F9/36Y02W30/50Y02E30/30G21C17/02G21F5/00G21F5/015
Inventor B·F·库尼小T·M·卡姆登
Owner WESTINGHOUSE ELECTRIC CORP