Critical dimensions of systems containing /sup 235/U, /sup 239/Pu, and /sup 233/U: 1986 Revision Page: 5 of 205
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
('IFF' \l Dl1fENtilt)NS OF SYSTEMis
CONTAINING - . 3 Pu. ANT) 2331'
11. (C. 1'rx11,1 andl N. L. Prllv'st
A BS'R AC'
Th'lis dormnitnt is it revision of TI'I)7028, C IMFI'A L
DIMENSIONS 0F SYSTlIMS 'ONTAININC l''3,
This rep rt is prim iarily a compilat ion of critical (lat a obtained from experimlent s performed
ii a number of laboratories during the period of 1945 through 1985. It supplements the
Nuclear Safety Guide Report 'TID-7016 (Rev. 2). in presenting critical data on which
rtc'bi0uIIeuinIdations of the Cuide are based.
It must be emphasized that this report gives critical data without safety factors, so it is
no substitute for ie Guide or for the relat ed document. The Aimerican Nat ional St andard
for Nuclear Criticality Safety in Operations with Fissionable Mat erials Outside Reactors3.
This st andard is supported by publications of H. K. Clark that interpret criticality infor-
mat ion for Pu, IU and 3T systenls.:-
Information for guiding the safe design of equipment for handling I he three common fissile
materials appears to a certain extent in tihe Nuclear Safety Guide, and with greater detail
in several handbooks.7 Other publications specify conditions for unique processes with a
part icular fissionable mat eriaL
Experinmtents of several types which contribute wsults applicable to nuclear design and to
safety problems have been described by Calliliau.9 Critical measurenients with materials
of interest in desired configurations yield information of greatest usefulness and accuracy.
Where it is not leasible to obtain t he desired critical data, for example, as a result of safety
rest rict ions, subcritical dat a may be directly applicable, and in some cases niay be extrap-
olated to approximate critical conditions. Critical conditions also may be approximated
from t lie dist ribiit ion of neut roiis mt reduced int o a sibcril ical assembly. These "exponen-
tial experiments" may be the only alternative where the quaint ity of material required is
too great for a critical experiment.
Here’s what’s next.
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Paxton, H.C. & Pruvost, N.L. Critical dimensions of systems containing /sup 235/U, /sup 239/Pu, and /sup 233/U: 1986 Revision, report, July 1, 1987; New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc1109879/m1/5/: accessed March 20, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.