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Title: Comparison of Predicted and Measured Helium Production in US BWR Reactors

Abstract

Helium production in reactor steel is calculated as the summation of all neutron reactions that produce helium either with thermal or fast neutrons. Thermal helium production is due to elements or impurities that are known to have a thermal neutron cross section for helium production, including 10B and 59Ni. Fast neutrons produce helium in all materials due to the threshold (n,?) reactions as well as other reactions that include helium as one of the reaction products. A generalized equation is given for helium production in all reactor materials and comparisons are given for helium measurements in steel and inconel samples. The helium production calculated using the generalized equation is in good agreement with helium measurements in samples from BWR reactors. Simplified equations are given with numerical values and generic parameters to facilitate calculations. However, it is important to use the actual boron content when known to obtain reliable estimates of the helium production.

Authors:
;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
893673
Report Number(s):
PNWD-SA-6944
TRN: US200625%%469
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of ASTM International. JAI, 3(3):Art. no. JAI13490
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BORON; CROSS SECTIONS; FAST NEUTRONS; HELIUM; IMPURITIES; NEUTRON REACTIONS; PRODUCTION; REACTOR MATERIALS; STEELS; THERMAL NEUTRONS; helium, BWR

Citation Formats

Greenwood, Lawrence R., and Oliver, Brian M. Comparison of Predicted and Measured Helium Production in US BWR Reactors. United States: N. p., 2005. Web.
Greenwood, Lawrence R., & Oliver, Brian M. Comparison of Predicted and Measured Helium Production in US BWR Reactors. United States.
Greenwood, Lawrence R., and Oliver, Brian M. Wed . "Comparison of Predicted and Measured Helium Production in US BWR Reactors". United States. doi:.
@article{osti_893673,
title = {Comparison of Predicted and Measured Helium Production in US BWR Reactors},
author = {Greenwood, Lawrence R. and Oliver, Brian M.},
abstractNote = {Helium production in reactor steel is calculated as the summation of all neutron reactions that produce helium either with thermal or fast neutrons. Thermal helium production is due to elements or impurities that are known to have a thermal neutron cross section for helium production, including 10B and 59Ni. Fast neutrons produce helium in all materials due to the threshold (n,?) reactions as well as other reactions that include helium as one of the reaction products. A generalized equation is given for helium production in all reactor materials and comparisons are given for helium measurements in steel and inconel samples. The helium production calculated using the generalized equation is in good agreement with helium measurements in samples from BWR reactors. Simplified equations are given with numerical values and generic parameters to facilitate calculations. However, it is important to use the actual boron content when known to obtain reliable estimates of the helium production.},
doi = {},
journal = {Journal of ASTM International. JAI, 3(3):Art. no. JAI13490},
number = ,
volume = ,
place = {United States},
year = {Wed Dec 28 00:00:00 EST 2005},
month = {Wed Dec 28 00:00:00 EST 2005}
}