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|  Radiological Assessor Training
DOE-HDBK-1141-2001
Student's Guide
I.
Introduction
II.
Radiological aspects of tritium
A. There are three primary sources of tritium.
These are:
1. Environmental sources - Reactions between
cosmic rays and the upper atmosphere
14
N + 1n
3
H + 12C
2
H + 2H
3
H + 1H
2. By-product of power reactors
Ternary fission - A fission event resulting
in fission fragments, one of which is
tritium. Occurrence typically has a 0.1%
yield.
B-10 (n, 2 alpha) 3H
Li-7 (n, n alpha) 3H
3. DOE production of tritium (Hanford,
Savannah River reactors) is by the following
reaction:
6
Li + 1n
3
H + alpha
Module 7 - 1
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