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ORNL-TM-4802.txt
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ORNL-TM-4802.txt
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ORNL-TM-4802
The Molten-Salt Reactor Information System
P. N. Haubenreich
D. W. Cardwell
J. R. Engel
OPERATED BY UNION CARBIDE CORPORATION e« FOR THE U.S. ATOMIC ENERGY COMMISSION
Printed in the United States of America. Available from
National Technical Information Service
U.S. Department of Commerce
5286 Port Royal Road, Springfield, Virginia 22161
Price: Printed Copy $56.45; Microfiche $2.25
This report was prepared as an account of work sponsored by the United States
Government. Neither the United States nor the Energy Research and Development
Administration, nor any of their employees, nor any of their contractors,
subcontractors, or their employees, rmkes any warranty, express or implied, or
assumes any legal liability or responsibility for the accuracy, completeness or
usefulness of any information, apparatus, product or process disclosed, or represents
that its use would not infringe privately owned rights.
ORNL-TM-L4802
UC-76 —~ Molten-Salt
Reactor Technology
Contract No. W-T405-eng-26
Reactor Division
THE MOLTEN-SALT REACTOR INFORMATION SYSTEM
P. N. Haubenreich
D. W. Cardwell
J. R. Engel
warrant
3
JUNE 1975 labiity
NOTICE: This document contains information of a preliminary
nature and was prepared primarily for internal use at the
Oak Ridge National Laboratory. It is subject to revision or
correction and therefore does not represent a final report.
OAK RIDGE NATIONAL LABORATORY
Oak Ridge, Tennessee 37830
operated by
UNICON CARBIDE CORPCRATION
for the
U.S. ENERGY RESEARCH AND DEVELOPMENT ADMINISTRATION
CONTENTS
ADSEY8CE vvvvevennssasnsccosssesscsscecnns creressassrane seesesansns
1. INTRODUCTION «.vevvvoeses terssearronen crsensens . oo cesene
2. DOCUMENTS AND INFORMATION STORED IN MSRIS ....ccc00e... cerenn .
3. SEARCHING THE DATA FILE ..evvvvecccans ceeaas cessesereinnnn ceo e
Searching by Keywords sevecececsssosens e cseene . .o
Subject Categories ........ ceeceas ceen s creacanee . . .
4. PREPARATION OF INFORMATION FOR MSRIS «vevcvssses cirsesen ceseenn
Format for Reference Information ....... cesersersrasassaveas
Abstracts .....c0000uene P heeseseseeesr it sssesaerav s ans oo es
Choice of KeywWords «..ceeesrrveccesoansnscoasoscnnons ceeersensae
Assignment of Categories and Accession Number .......... ceus
REFERENCES ....... tesreensns trerecrerssasacesearnone cresscancoasss .
APPENDIXES 4eveoeesensoasocnnnons ceereeseee v ceseesracreresaaasan .
Appendix A. MSRIS Keyword List ......... crecrecntsesserrsannes
Appendix B. Subject Categories in MSRIS .vo.vvecvceceneeeenns .o
iii
Appendix C. Instructions for Use of MSRIS from an Interactive
Computer Terminal .......c...
............. 4 ¢ ¢ 9 ¢ 0 90
THE MOLTEN~SALT REACTOR INFORMATION SYSTEM
P. N. Haubenreich
D. W. Cardwell
J. R. FEngel
Abstract
The Molten-Salt Reactor Information System (MSRIS) is =
computer-based file of abstracts of documents dealing with the
technology of molten~salt reactors. The file is stored in the
IBM-360 system at ORNL, and may be searched through the use of
established interactive computer programs from remote terminals
connected to the computer via telephone lines. The system cur-
rently contains 373 entries and is subject to updating and ex-
pansion as additional information is developed.
This document describes the nature and general content of
the data file, a general approach for obtaining information
from it, and the manner in which material is added to the file.
Appendixes provide the list of keywords currently in use, the
subject categories under which information is filed, and sim-
plified procedures for searching the file from remote terminals.
1. INTRODUCTION
Nuclear reactors in which the fissile and fertile materials are in-
corporated in molten-salt mixtures offer a route to long-term, economical
power that is both promising and distinctly different from other reactors
now being built and developed. Molten-salt reactor technology is not new,
having its beginnings in the aircraft reactor program in 1947. Thus,
there exists a considerable store of information which has been built up
over the years.! During most of this time, a formal system for information
retrieval was unnecessary, because the preponderance of the work on MSR
technology was done at one site (the Oak Ridge National Laboratory), within
a closely knit project orgasnization. As other organizations began to par-
ticipate in this activity a need was created that the MSRIS was designed
to meet.
The MSRIS is intended to contain an up-to-date and readily accessi-
ble file of abstracts of selected documents dealing with all aspects of
molten-salt reactor technology. The purpose is to help searchers find the
information they seek by quickly identifying the documents that contain the
desired information and by displaying brief sbstracts so the searchers can
decide which documents they need to read. The gbstracts are stored in the
IBM-360 computer system at ORNL and various remote terminals can be used
for search instructions and output.®
The original data file was established over a period of time in 1971
and 1972 from information that was then available; an indexed compilation®
of the first 321 entries was published in 1971. Subsequent additions
raised the total number of entries to *73. This work was stopped when the
entire MSR program was discontinued early in 1973. With the reactivation
of the program (in 197h4), the MSRIS was restored to its prior condition.
It is anticipated that the data file will be gradually updated and then
kept current as this program continues.
The sections which follow describe the kinds of documents and infor-
mation that are included in the MSRIS, general procedures for retrieving
information, and how the abstracts are prepared and indexed. Appendixes
provide the list of keywords, the subject categories, and detailed com-
puter procedures.
2. DOCUMENTS AND INFORMATION STORED IN MSRIS
The Eig@g of documents included in the MSRIS are all those that are
generally available to the public. This includes ORNL reports (ORNL-xxxx)
and technical memoranda (ORNL-TM-xxoex) and similar reports from other
sites. Letters and internal correspondence (even though assigned an MSR
memo number ) are not included. No ORNL-CF memo is included unless it
contains information of wide interest which is not otherwise available.
(There are some older ORNL-CF memos like this; if a forthcoming ORNL-CF
memo seems to fit this description, consideration should be given to
putting out the information in a more accessible form.) Books, journal
*
The MSRIS file is one of several "data bases" on different subjects
stored in the computer, all with consistent format and searchable by the
same programs and terminals.
articles, papers given at meetings for which reprints were made avall-
gble; all are subject to inclusion in MSRIS.
Although its spectrum of documents is quite broad, the MSRIS is by
no means intended to include every single document published on molten
salts or even on molten-salt reactors.” Selection of documents from
among those published prior to 1971 was by a panel of experts from all
parts of the molten-salt reactor program at ORNL. The criterion was that
the chosen documents give an adequate description of all significant de-
velopments at least as far back as the initiation of the MSRE design in
1960. All externally available documents originating in the molten-salt
reactor program at ORNL since 1970 are to be routinely abstracted by the
authors and then filed ia the MSRIS. The staff of the MSRIS (all part-
time ) may also abstract significant public documents originating elsewhere
and add them to the MSRIS file.
The information that is stored in MSRIS for each document is illus-
trated by Fig. 1 which is a reproduction of a complete entry for one report
as it was retrieved from the file. Numbers have been added to identify the
seven information fields that are actually used in MSRIS and to provide a
key to the description of these fields below. It may be noted that three
additional labels — <AUTHSHIP>, <REFERENC>, and <KEYTERMS> — appear on the
illustration; these identify groups, or subsets, of information fields.
Use of one of these expressions (or its abbreviation) causes the computer
to deal with all of the information fields in that subset.
l. <HEADER >: This field provides an explicit identification for
every document or entry in the file, as well as some very general infor-
mation about the document itself. The first three characters (alphabetic)
define the primary category”” into which the material contesined in the
document falls. This is the category which best describes the main thrust
of the document, the greatest proportion of its content, or the purpose
x*
Information on all kinds of molten salts (most of which are not suit-
able for use in molten-salt reactors) is embraced in the Molten Salt Data
Center of Rensselaer Polytechnic Institute.
_)(.
* The MSRIS category system is described later, in connection with
retrieval of information, and a complete listing of all categories is
provided in Appendix B.
#44 321 ####
<HEADER >MCD700019
CAUTHSHIP>
{AUTHOR >Engel, J.R.; Haubenreich, P.N.; Houtzeel, A.
<TITLE >SPRAY, MIST, BUBBLES, AND FOAM IN THE MOLTEN-SALT REACTOR EXPERIMENT
CREFERENC>
<PUB DESC>0ak Ridge National Laboratory, Tenn. ORNL-TM=-3027 (June 1970), 102 p,
33 fig, 65 ref.
<KEYTERMS>
{SUBJ CAT>MCD ; MDB; KAB
<KEYWORDS>*analysis; *experience; * MSRE; *operation; beryllium ; bubbles;
corrosion products; density; foaming ; gas injection; interfacial tension ;
liquid level measurement; mists; off-gas systems ; physical properties; pumps;
sprays; void fractions ; primary system
CABSTRACT>In the fuel pump bowl 50 gpm of salt was sprayed through the cover gas
and into the salt pool. Effects included not only the intended xenon stripping
but several others which became the subject of investigations reported here.
The spray produced a mist of salt droplets, some of which drifted into the
off-gas line at a rate of a few grams per month. The resultant salt deposits
required cleanout at intervals of six months to a year. The stripper jets also
drove bubbles several inches into the salt pool, reducing the average density
and raising the actual level above that indicated by the bubbler level elements.
Some salt transferred into tha overflow line, apparently as froth although
there was no evidence of persistent foam. Most of the bubbles driven into the
salt returned to the surface, but a small fraction was drawn into the
circulating loop. The situation was such that small changes in pump speed or
physical properties of the salt changed the depth of the bubble zone enough to
change the volume fraction of gas in the loop over the range from 0.02% to 0.7%.
Fig. 1. Example of MSRIS entry.
for which it was written. ©Since the content of a document frequently
does not fit completely into any one category, other categories may be
listed elsewhere in the entry (see below). The remainder of the header
consists of a 6-digit number that identifies the entry. The first two
digits identify the year of publication and the last four are assigned
serially to entries of that year as they are added to the MSRIS file.
Topical reports normally are treated in only one entry; however, reports
covering a variety of subjects, such as MSRP semiannual progress reports,
may have an entry for each of the several subjects covered. In such
cases the header for each entry has both a different primary category and
a different identifying number. Tn addition to the header identification,
each individual entry is assigned a simple sequential number (beginning
with 1) to identify its position in the data file. Thus, the document
used in the example for Fig. 1 is number 321 in the data set.
2. <AUTHOR >: The "author" field is one of several fields in a
subset that carries the generic title of "authorship” or, in computer
terminology, <AUTHSHLP>. Since author is the only member of this subset
used in MSRIS, either designation could be used. This field contains the
names of all authors, where they are explicitly identified. Where in-
dividual authors are not identified, as in the case of MSRP semiannual
progress reports, the expression "(Staff Report)" is entered in the author
field.
5. <IITLE >: This is a unique field label, and the field contains
the full title of the document as it appears on the published version.
Section titles are used along with the document title for progress reports.
i, <PUB DESC>: The "publication description" is a member of the
subset of fields containing reference information, <REFERENC>. Again, only
one member of the subset is used in MSRIS. This field contains the name
of the organization that originated the document, the document number, its
publication date, and some indication of its size and breadth of scope
(numbers of pages, figures, and references).
5. <SUBJ CAT>: The "subject category' is one of two fields used in
MSRIS out of the subset generically identified as <KEYTERMS>. This field
contains, first, the primary category (from the "header"), and then any
other categories to which the document may have been assigned.
6. <KEYWORDS>: This field is the other member of the "keyterms™
that appear in the file. The most important, or most relevant, keywords
appear at the beginning of the field, and each is preceded by an asterisk
(*). All of the keywords that appear in the file were selected from the
list given in Appendix A; however, some of the keywords in that 1list may
not yet have been used. The list is subject to revision as the infor-
mation file expands.
7. <ABSTRACT>: This field contains the text of the document abstract.
Often it is the same abstract that appears at the beginning of the document
itself, but this is not a requirement.
5. SEARCHING THE DATA FILE
The MSRIS file is stored in the memory of the IBM-360 computer system
at the Osk Ridge National Laboratory. Also stored there are the programs
that are needed for searching the file. Wide access is provided through
various kinds of remote terminals, including Teletype, IBM-2741, and NOVAR
terminals, which can be connected through the telephone system to ORNL's
IBM-560/T5. The file may be used freely by ORNL staff members and outside
organizations who have access to the ORNL computing facilities.
The MSRIS file is only one of many (32 at the present time) in the
ORNL computer that can be searched by the ORLOCK program.®? This program
was designed to be quite versatile, providing many options for searching
these files, and, in fact, is so versatile that learning to exercise all of
its potential would require considerable time. We believe, however, that
the needs of most users of the MSRIS will be satisfied by a few options
that are relatively simple to learn to use. A discussion of the equipment
and programs and step-by-step procedures for using them with MSRIS are
given in Appnedix C. Additional detalls may be found in Ref. 3. That
which follows is a discussion of the basic logic and general procedures
that are involved.
If one wishes to sift the file to find all records on a chosen sub-
ject, the best way 1s by subject category, by keywords, or by some
combination of the two. Of course, if one is looking for a specific
reference and has some clue, such as the name of one of the author or
the report number, these can be used to narrow and speed his search.
Searching by Keywords
The current list of keywords for MSRIS is given in Appendix A. A
few have not yet been used and so do not appear as keywords in the com-
puter file. Others may appear in many separate records. (The ORLOOK
program refers to the filed material for each document as a "record".)
At the moment there are 373 records in the MSRIS file.
A searcher could select one keyword that most nearly identifies the
subject in which he is interested, and look at all records having that
keyword. But usually a single keyword fetches more records than a person
may have time to examine. So one narrows the search by specifying more
than one keyword. There is more than one way to go about this. One could
start by selecting a set of several keywords that he feels should define
precisely what he is interested in, and retrieve only those records that
include among their keywords all those in the specified set. The other
way would be to narrow the file in stages; first to those records having
the one or two most important keywords; then, from among these, the rec-
ords having the next most significant keyword; and so on. Finally, the
file would either be narrowed to the specific subject of interest or con-
tain so few records that the searcher could afford to have them all dis-
played for his examination. (The conversational program tells the searcher
how many records he is dealing with at each stage in his search.) The
first way is quicker, but runs the risk of omitting some records that may
be of interest, but might not have been given every one of the keywords
in the searcher's set. (When searching one should remember the human ele-
ment; that is, that the person who assigned keywords to the document in-
evitably viewed it from a standpoint different from that of the searcher.)
Sometimes it may prove useful to use the option of discriminating
against documents having some keyword or other feature. For example, it
may be desirable to examine all pertinent records other than progress
reports. This procedure is also explained in Appendix C.
Subject Categories
The subject category system is like a set of 14 large file boxes,
each containing several smaller boxes in which the records are stored.*
The 14 large boxes correspond to the 14 broad areas or first-order cate-
gories listed in Table 1. As shown in Appendix B, all but two (D and N)
are further subdivided.
Table 1. MSRIS first-order categories
Category Subject
Molten-salt reactor programs
Reactor analysis
Reactor chemistry
Analytical chemistry
Graphite
Hastelloy N and related alloys
Materials other than Hastelloy N and graphite
Reactor component development
Reactor design
Instrumentation and controls
Operation and maintenance
Fuel preparation and processing
MSRE
Miscellaneous
SEr"RaHOoDOREHEHOOG W R
The way the subject category system works is illustrated in Fig.
2, which is a schematic representation of a portion of the category M file,
The outer box encompasses all documents dealing to any significant extent
with any aspect of the MSRE. A document that is essentially a review of
all aspects of the MSRE would be tagged with the designation MXX and be
put into a box with all other comprehensive documents having this tag.**
*
It may be noted that, in effect, duplicate copies of records may be
stored in more than one box, since many records are assigned both a pri-
mary category and other categories.
*¥%
Either as the primary category in the header of the computer record
or as an "other category” in the subject category field.
ORNL-DWG 75—-3242
M. MSRE
MXX
documents comprehensively
treating MSRE
MA. MSRE Design
MAX
documents comprehensively treating
design of MSRE
MAA MSRE Plant Design
MAB MSRE Major Comp. Design
MAE MSRE Aux. Comp. Design
MB. MSRE Construction
MBX
MBA
MBB
Lo |
Fig. 2. Schematic representation of a portion of the MSRIS
category system of filing.
10
Documents dealing with MSRE design go into box MA. Those covering design
of many or all parts of the MSRE are tagged MAX and go into the box so
designated. Documents dealing only with the design of specific parts of
the MSRE are tagged MAA, MAB, etc., as appropriate,and go into separate
boxes. Documents on MSRE construction, operation, etc., are similarly
sorted.
i, PREPARATION OF INFORMATION FOR MSRIS
For each document that is to be included in MSRIS, the required in-
formation is assembled in the form shown in Fig. 3. The material is, in
many respects, the same as that discussed earlier in the description of a
representative entry, but it has been rearranged to facilitate its prep-
aration. Whenever possible, this information is supplied to the MSRIS
staff by one of the authors when the document is published. Preparation
of the computer entry and insertion into the data file then follow rou-
tinely. The following discussion of the information items is keyed to
the numbers beside the example in Fig. 3.
1. Authors: IList all authors, last names first, initials, no
punctuation except +.
2. Title: Gilve the complete title as on the published document.
3. Originating organization: Use a brief form of the name, but do
not abbreviate to the point of being cryptic; for ORNL, use the form
shown.
L, Reference information: Generally this includes document identi-
fication, date of publication, and number of pages, figures and references.
Formats for various kinds of documents are illustrated below.
5. Abstract: Guidelines for abstracting are given below.
6. Keywords: These are to be selected from the MSRIS Keyword List
in Appendix A.
7. Proposed keywords: If an author or abstracter feels that a key-
word is needed which is not in the MSRIS Keyword List, he should list it
on a separate line for consideration when the 1list is next revised.
11
Key to
text Example
1 Engel JR + Haubenreich PN + Houtzeel A
2 SPRAY, MIST, BUBBLES, AND FOAM IN THE MOLTEN-SALT REACTOR
EXPERIMENT
3 Oask Ridge National Laboratory, Tenn.
L ORNL-TM-3027 (June 1970), 102 p, 33 fig, 65 ref.
In the fuel pump bowl 50 gpm of salt was sprayed through the.
cover gas and into the salt pool. Effects included not only
the intended xenon stripping but several others which be-
came the subject of investigations reported here. The spray
produced a mist of salt droplets, some of which drifted into
the offgas line at a rate of a few grams per month. The re-
sultant salt deposits required cleanout at intervals of six
months to a year. The stripper jets also drove bubbles
several inches into the salt pool, reducing the average den-
sity and raising the actual level above that indicated by the
bubbler level elements. Some salt transferred into the over-
flow line, apparently as froth although there was no evidence
of persistent foam. Most of the bubbles driven into the salt
returned to the surface, but a small fraction was drawn into
the circulating loop. The situation was such that small
changes in pump speed or physical properties of the salt
changed the depth of the bubble zone enough to change the vol-
ume fraction of gas in the loop over the range from 0.02% to
0.7%.
\J
6 *analysis + *experience + *MSRE + *operation + beryllium +
bubbles + corrosion products + density + foaming + fused
salts + gas injection + interfacial tension + liquid level
measurement + mists + off-gas systems + physical properties +
pumps + sprays + void fractions + primary systems
T overflow
Fig. 3. Example of form in which abstracts are submitted for the
molten~salt reactor information system.
12
Format for Reference Information
The "reference" line (item 4 in Fig. 3) not only gives the information
needed to locate or to order the document, but also gives clues as to how
"meaty" it is (how many pages, figures, and references are included).
Examples of reference lines for various kinds of documents follow:
USAEC report
ORNL-4233 (Feb. 1968), 60 p, 24 fig, 25 ref.
Other reports
AECL-3293 (Mar. 1969), 30 p, 15 fig, 18 ref.
US Govt. Printing Office (Jan. 1970), 138 p, 59 fig, 23 ref.
Edison Electric Institute Publication No. 70-30 (Apr. T0), 53 p,
12 fig, 5 ref.
Unnumbered report (Aug. 1970), 113 p, 41 fig.
Journal and magazine articles
Nucl. Appl. Tech. 8, 118 (Feb. 1970), 18 p, 6 fig, 16 ref.
Nucl. Engrg. International 14 (155) 325 (Apr. 1970), 5 p, 3 fig.
Conference papers
Preprint of Paper 105, 1970 Am. Power Conf., Chicago, Apr. 2023,
1970, 14 p, 3 fig, 11 ref.
Abstracts
An abstract may be "indicative" or "informative" or a combination.
A purely indicative abstract simply lists or describes the contents of a
document, the aim being to do so sufficiently well for a reader of the
abstract to decide whether or not to take the time to look at the docu-
ment itself. An informative abstract, in principle, conveys the major
factual results of the document in sufficient detail that most readers
would not find it necessary to examine the document itself. Insofar as
15
is practical, abstracts for the MSRIS are informative. Numbers that re-
quire lengthy explanation and qualifications to be meaningful (fuel-cycle
costs, for example) are avoided, however. Some documents, such as prog-
ress reports and review articles, which cover a wide range of topics, lend
themselves only to indicative abstracts. In most other cases, an actual
abstract will probably tend to be a combination of indicative and infor-
mative,
Whether indicative or informative, the abstract should be written
clearly and concisely so as to be quick and easy to read. There is no
fixed 1limit on MSRIS abstracts, but few should exceed about 2C0 words in
length. Having all abstracts as succinct as possible is a great advantage
to the user of the file;, great enough to warrant special efforts on the
part of the writer. In writing an abstract, one should first of all jot
down the items of information that he wants to include. Then he should
| draft the abstract, using direct, concise sentences. Next the writer
should edit his draft to eliminate superfluous words and, if necessary,
selectively cut the content to get the length down to about 200 words.
Finally, he should critically reread his abstract to make sure that each
sentence is still complete and clear and that the most important infor-
mation is still included.
Choice of Keywords
The MSRIS is intended to help anyone seeking information on a chosen
subject to find abstracts of all documents containing information pertinent
to that subject. Without any knowledge of report titles, authors' names
or the like, he should be able to pull the right abstracts from among a
multitude of others and be confident that he has not missed any essential
information. The keyword index is a mechanism designed to facilitate this.
Each entry in the MSRIS includes a set of keywords chosen from the
MSR Keyword List which appears in Appendix A.*¥ 1In assigning keywords to a
*It may be desirable for the published document itself to carry some
keywords not included in the MSRIS list. For example, "molten-salt reac-
tors" is a very important tag for MSR documents in any broader information
system, but it would be superfluous in the MSRIS since it would appear on
almost every entry.
14
document, the reviewer or author should ask himself, "If a user wanted
this particular abstract, under what set of keywords would he ask the com-
puter to search?" As many keywords may be used as is necessary to fully
define the contents of the document. (This varies widely, averaging
roughly a dozen. )
The person preparing an MSRIS entry may list keywords in any order,
but should place an asterisk immediately hbefore each of the most important
keywords. When the computer input is prepared, these will be placed at the
head of the list so they can be seen at first glance.
Assignment of Categories and Accession Number
In addition to the information shown in Fig. 3, each entry in the
MSRIS file contains an accession number and category identification. The
accession number follows routinely from the publication date of the docu-
ment and its order of processing. The categories are assigned by the MSRIS
staff on the basis of suggestions made by the abstractor of the document.
Suggestions should be provided both for the primary and any other catego-
ries that may be appropriate.
REFERENCES
1. M. W. Rosenthal, P. R. Kasten, and R. B. Briggs, "Molten-Salt Reac-
tors - History, Status, and Potential,"” Nucl. Appl. Tech., &, 107
(1970).
2. D. W. Cardwell and P. N. Haubenreich, Indexed Abstracts of Selected
References on Molten-Salt Reactor Technology, ORNL-TM-3595 (December
1971 ).
%, V. A. Singletary, An On-Line Conversational Retrieval System for ORCHIS
Text-Oriented Data Bases, User's Manual, ORNL-4951 (April 197L ).
APPENDIXES
17
Appendix A
MSRTS KEYWORD LIST
This list contains 5Lkl keywords that abstractors for MSRIS can use.
Interspersed in the list are notes directing anyone with other words in
mind to equivalent or related keywords that can be used.
An ammended list
will be issued if significant additions or changes are made.
absorbers
absorption
accidents
acids
actinides
administration
adsorption
AEC
afterheat
aging
air
(for Aircraft Reactor Experiment
use ARE)
alloy composition
alloys
aluminum
(for amplifiers
use electronics)
analog systems
analysis
analytical chemistry
antimony
applications
architect-engineering
ARE
argon
(for ASME codes
use
barium
construction codes)
B
batch processing
bearings
behavior
(for bending strength
use
flexural properties)
beryllium
beryllium fluoride
beryllium oxide
beta decay
bibliographies
(for
use
(for
use
bismuth
blanket
blowers
(for
use
boiling
borates
borides
biological effects
health physics)
biological shielding
shielding)
boilers
steam generators)
boron
18
boron trifluoride
(for
use
brazing
(for
use
(for
use
braze alloys
brazing )
breeder reactors
LMFBR or MSBR)
breeding gain
breeding performance)
breeding performance
(for
use
breeding ratio
breeding performance)
bromides
bromine
Brookhaven National Laboratory
bubbles
budgets
(for
use
(for
use
burnout
burnup
buildings
structures)
burnable poison
reactivity)
cadmium
calcium
calculations
capacity