Nuclear safety guide TID-7016 Revision 2 Page: 3 of 9
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We agree if the related economics or cost/risk benefits are suppressed.
In either case, calculational data are predicated on what is known and
understood. Unfortunately, this practice imposes a requirement of
vigilance against results having no predicate in reality. It follows
that each individual or organization utilizing a computational method
to establish safety has an interest in experimental data. Experience
is the link between what is understood and the realities of nature.
Critical experiments establish the measure of reliability to associate
with calculated results. As long as there is an expanding use of cal-
culational methods in nuclear criticality safety,- there is a concurrent
continuing need for critical experiments data and, hence, a national
critical experiments capability.
The Guide can be placed into perspective by considering the ele-
ments of a Nuclear Criticality Safety Program as summarized in the
following:
NUCLEAR CRITICALITY SAFETY
* Program with defined administrative and technical
practices
* Clear definition of responsibility and authority
* Written procedures and documented safety analyses
for operations
* Criticality data and guides
It cannot be too strongly emphasized that criticality data and
information from Guides are on'y elements of an effective safety program.
Chapter I of the Guide addresses each of the first three listed areas
and cor.tains an excellent discussion of accident experience in process
operations. Additional encounters with these listed topics can be had
from the products of the American Nuclear Society Standards Subcommittee
8 on fissionable materials outside of reactors. Evidence is ample of
the consistency between recommendations in standards and information in
the Guide. The last item on the list, the information source, is the
thrust of the remainder of the document. Before commenting on these
data it is worthwhile to address criteria appropriate to prescriptions
that might be considered on "how to establish a limit" for operations.
Succintly expressed in terms of the neutron multiplication factor,
the principal elements may be ordered as in the following schematic:
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Thomas, J T. Nuclear safety guide TID-7016 Revision 2, article, January 1, 1980; Tennessee. (https://digital.library.unt.edu/ark:/67531/metadc1055855/m1/3/: accessed May 30, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.