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Nuclear sources of hydrogen in CANDU fuel channels

Technical Report:

Abstract

The contribution to hydrogen ingress from nuclear processes is evaluated. The processes investigated are: the production of protons and deuterons by the (n,p), (n,d), ({gamma},p), and ({gamma},d) reactions in Zr, Nb, and chemical impurities in the fuel channel materials; the implantation in the fuel channel of the high-energy protons and deuterons generated by the collisions of fast neutrons with hydrogen and deuterium in the cooling water; and, the implantation of the protons produced by the photo-disintegration of deuterium in the cooling water and the implantation of the protons produced by the photo-disintegration of deuterium. The total ingress over a 20-year time span from the nuclear sources is calculated to be less than 6 ppm by wt. The study indicates that impurities like nitrogen could generate high levels of hydrogen from N(n,p)C reaction if the impurity levels are not controlled.
Authors:
Publication Date:
Jun 01, 1992
Product Type:
Technical Report
Report Number:
AECL-10630
Reference Number:
SCA: 210400; PA: AIX-24:007368; SN: 93000932188
Resource Relation:
Other Information: PBD: Jun 1992
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; FUEL CHANNELS; HYDROGEN; CANDU TYPE REACTORS; DEUTERIUM; DEUTERONS; GAMMA RADIATION; NEUTRON REACTIONS; NIOBIUM; PROTONS; ZIRCONIUM; 210400; POWER REACTORS, NONBREEDING, OTHERWISE MODERATED OR UNMODERATED
OSTI ID:
10119095
Research Organizations:
Atomic Energy of Canada Ltd., Chalk River, ON (Canada). Chalk River Nuclear Labs.
Country of Origin:
Canada
Language:
English
Other Identifying Numbers:
Other: ON: DE93612447; TRN: CA9201041007368
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
[34] p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Lone, M A. Nuclear sources of hydrogen in CANDU fuel channels. Canada: N. p., 1992. Web.
Lone, M A. Nuclear sources of hydrogen in CANDU fuel channels. Canada.
Lone, M A. 1992. "Nuclear sources of hydrogen in CANDU fuel channels." Canada.
@misc{etde_10119095,
title = {Nuclear sources of hydrogen in CANDU fuel channels}
author = {Lone, M A}
abstractNote = {The contribution to hydrogen ingress from nuclear processes is evaluated. The processes investigated are: the production of protons and deuterons by the (n,p), (n,d), ({gamma},p), and ({gamma},d) reactions in Zr, Nb, and chemical impurities in the fuel channel materials; the implantation in the fuel channel of the high-energy protons and deuterons generated by the collisions of fast neutrons with hydrogen and deuterium in the cooling water; and, the implantation of the protons produced by the photo-disintegration of deuterium in the cooling water and the implantation of the protons produced by the photo-disintegration of deuterium. The total ingress over a 20-year time span from the nuclear sources is calculated to be less than 6 ppm by wt. The study indicates that impurities like nitrogen could generate high levels of hydrogen from N(n,p)C reaction if the impurity levels are not controlled.}
place = {Canada}
year = {1992}
month = {Jun}
}