skip to main content

Title: Non-destructive method for determining neutron exposure and constituent concentrations of a body

A non-destructive method for determination of neutron exposure and constituent concentrations in an object, such as reactor pressure vessel, is based on the observation of characteristic gamma-rays emitted by activation products in the object by using a unique continuous gamma-ray spectrometer. The spectrometer views the object through appropriate collimators to determine the absolute emission rate of these characteristic gamma-rays, thereby ascertaining the absolute activity of given activation products in the object. These data can then be used to deduce the spatial and angular dependence of neutron exposure or the spatial constituent concentration at regions of interest within the object.
Authors:
 [1] ;  [1]
  1. (Richland, WA)
Publication Date:
OSTI Identifier:
866050
Report Number(s):
US 4622200
DOE Contract Number:
AC14-76FF02170
Resource Type:
Patent
Research Org:
WESTINGHOUSE HANFORD CO
Country of Publication:
United States
Language:
English
Subject:
non-destructive; method; determining; neutron; exposure; constituent; concentrations; determination; reactor; pressure; vessel; based; observation; characteristic; gamma-rays; emitted; activation; products; unique; continuous; gamma-ray; spectrometer; views; appropriate; collimators; determine; absolute; emission; rate; ascertaining; activity; data; deduce; spatial; angular; dependence; concentration; regions; reactor pressure; pressure vessel; non-destructive method; rays emitted; neutron exposure; constituent concentrations; /376/250/