United States ' Office of EPA 4QO-R-S2-003
Environmental Protection Radiation Programs MAY 1992
Agency Washington, DC 20460
Radiation
v>EPA User's Guide for the
SYS POP Program
A PC Version of the
PRESTO-EPA-POP
Operation System
Printed on Recycled Paper
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0%
k
400-R-92-003
USER'S GUIDE FOR THE SYSPOP PROGRAM
A PC Version of the PRESTO- EPA- POP Operation System
jVx Version 1.0
V
^ May 1, 1992
Developed by
Cheng Yeng Hung, Ph. D.
U.S. Environmental Protection Agency
Office of Radiation Programs
Washington, DC 20460
HEADQUARTERS LIBRARY
ENVIRONMENTAL PROTECTION AGENCY
WASHINGTON, D.C. 20460
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DISCLAIMER
This user's guide for the PRESTO-EPA-POP operation.system.is the
result of integrated work sponsored by an'agency of the United ^..-i
States Government. Neither the United States Government nor any
agency thereof, nor any of their employees, contractors
subcontractors, or their employees, make any warranty, express or
implied, nor assume any legal liability for use of any
information, apparatus, product or process disclosed in this
report, nor represent that its use by such third party would not
.infringe privately-owned rights.
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PREFACE
Since the mainframe version of the PRESTO-EPA family of models
were published in December 1987, the Office of Radiation Programs
has received numerous requests from potential.users of the model
urging the Office to convert ..the model to a form usable on a ,;.:.,im-
personal computer. This effort has subsequently proceeded in two
phases, the simplification of the PRESTO-EPA models and the
development of the PRESTO-EPA operation system. The
simplification of the PRESTO-EPA models involved primarily the
modifi-cation of the DARTAB subroutine -so that the size required-.••
by the random access memory could be reduced considerably without
altering the accuracy of the simulation results. The PRESTO-EPA
operation system is designed to assist users to create and edit
the main input file for the PRESTO-EPA models. It is a user - . ..
friendly, menu-directed operation system. The operation system
for the PRESTO-EPA-CPG model was developed first because it
received the most request.from the public. This system
development was completed and published in April 1989. Users
found that the operation .system has -been greatly simplified .and., .
much of the potential errors were prevented by employing the
operation system program. In response to many users' requests,
we began to develop the PRESTO-EPA-POP operation system
subsequently. The structure of the operation system is in
general kept the same as that used in the PRESTO-EPA-CPG
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operation system to improve the system efficiency. The use of a
color monitor is one of the improvements. The operation system
does not include the preparation of the input file required by
the INFIL subroutine because the input file can be easily handled
without an operation system.
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TABLE OF CONTENTS
Page
LIST OF FIGURES ; vii
1. INTRODUCTION 1
2 . -DESCRIPTION OF THE -SYSPOP .PROGRAM. .._ ^-.i-... ... .. . / .3,.,,
2.1 , PC VERSION OF PRESTO-EPA-POP MODEL... - . 3 . .
2.2 PRESTO-EPA-POP INPUT REQUIREMENTS 4
2.2.1 Environmental and Nuclide-Specific
Input File 4
2.2.2 INFIL Subroutine Input File 5
2.2.3 Health Effects Input File 5
2.3 . DESCRIPTION OF SYSPOP OPERATION SYSTEM..... 6
2.3.1 General 6
2.3.2 System Structure .7
3 . SYSTEM INSTALLATION 11
4. SYSTEM OPERATIONS : 11
4.1 START UP .12
4 .2 COPYING A NEW FILE 13
4 . 3 EDITING THE INPUT FILE 13
4.3.1 Editing the Input File 14
4.3.2 Comparing the Input File 16
4.3.3 Reviewing the Input File 17
4.3.4 Deleting Radionuclides 18
4.3.5 Inserting Radionuclides .19-
4.3.6 End of Editing 21
4.4. TESTING THE INPUT FILE 21
4.5 EXECUTION OF PRESTO-EPA-POP 22
4 . 7 PRINT OUT POP. OUT 23
4 . 8 END OF OPERATION 24
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REFERENCES
APPENDIX A - LISTING OF PRESTO-EPA-POP MODEL
APPENDIX B - INPUT FILE FORMAT
APPENDIX C - SAMPLE INPUT AND OUTPUT FILES ..
Table C-l Environmental and Nuclide Specific Input
File ...
.- , Table C-2 -INFIL Subroutine. Input File
Table C-3 Dosimetric Input File ,
Table C-4 Output File ,
25
A-l
B-l
C-l
C-2 .
C-.7...
C-ll
C-20
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Number
4-1
4-2
4-3
LIST OF FIGURES
Main menu of the operation system
Display of the editing sub-menu ..
Instructions for file.editing .... .
Page
13
17
18...
vii
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1. INTRODUCTION
The U.S. Environmental Protection Agency (EPA) developed the
PRESTO-EPA-POP, a member of PRESTO-EPA family models, to
calculate the potential fatal health .effects, -and-serious. jjenetie..
effects for the general population downstream of. a low-level
radioactive waste (LLW) disposal site. These results serve as
data bases for the comparison of the potential health impacts for
a broad number of LLW disposal alternatives and are used to
support generally applicable environmental standards for the
, management and disposal..of .LLW. The model is also considered tol_
be suitable for the initial screening of-candidate LLW disposal-
sites.
The original PRESTO-EPA-POP model employed the DARTAB
subroutine, EPA's standardized generic submodel for doses and
health effects calculations, which requires a large volume of
access files. The model could therefore only be executed by a
mainframe computer. In responding to many potential users'
request, a PC version of the PRESTO-EPA-CPG Operation System was
published in 1989 [EPA 89}. Soon after the PC version of the
PRESTO-EPA-CPG Operation System was released, we received
numerous comments from potential users that it would be
beneficial to new users if the PRESTO-EPA-POP model could also be
operated on a personal computer (PC). In responding to the
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request, the mainframe version of the PRESTO-EPA-POP model was
modified and converted into a PC version [Ro87].
The structure of the PRESTO-EPA-POP Operation System is
'maintained the same as that used in the PRESTO-EPA-CPG Operation
System. That is, a user-friendly input file preparation program
-was developed, to,, automate ,±he input ...file preparation .to .reduce.. .....
the potential :of making unnecessary errors. . .•-.;-
This user-friendly PRESTO-EPA-POP Operation System Program,
SYSPOP, is the combination of the input file preparation program
and the PC version of PRESTO-EPA-POP model which simplifies the
operation of PRESTO-EPA-POP.
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2. DESCRIPTION OF SYSPOP PROGRAM
2.1 PC VERSION OF.THE PRESTO-EPA-POP MODEL
The PRESTO-EPA-POP model was designed to analyze the
potential fatal health-effects .and-serious genetic effects .to. the
general -public from the disposal of. LLW. .The original model was
implemented in an IBM mainframe computer and is well documented
in EPA's report on the documentation of the PRESTO-EPA-POP model
[EPA87].
The mainframe version of the model' employed the DARTAB
subroutine/ EPA's standardized model for dose and,health effects-
calculations, which requires a large volume of access files. The
model could therefore be executed by a mainframe computer. To
execute the model in a personal computer, it is necessary to
modify the model to reduce the core memory requirement and to
improve the process efficiency as well.
The major modifications of the model include the replacement
of the DARTAB subroutine with the HESTAB subroutine, elimination
of QUANC8 function, and adjustment of I/O statements [Ro87].
The replacement of the DARTAB subroutine with HESTAB has
reduced considerably the core, memory-.requirement.. .To calculate:. .
the health effects and genetic effects resulting from human
exposures, the HESTAB subroutine reads a set of health effects
and genetic effects conversions factors from the POPFAC input
file, which were precalculated from the RADRISK file using the
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same methodology as used in the original DARTAB subroutine. The
results of the calculation are printed out in much the same -
format used in the mainframe version of the model.
• The elimination of the QUANC8 function, a function for
integrating an algebraic function having an infinite limit,
prevents the tedious numerical integration- of--Hung.!;s ,.correction--t-.-i.
factor [Hu80]. The modified model employsJan analytical.solution
as derived by Hung [Hu86]. This modification resulted in some
savings in the process time. A complete listing of the PC
version of the PRESTO-EPA-POP model is presented in Appendix A.
The PC version of PRESTO-EPA-POP will be called PRESTO-EPA-POP
throughout the rest of this documentation. • - . • - ..- —-..—
2.2 PRESTO-EPA-POP INPUT REQUIREMENTS
There are three input files required for the execution of
PRESTO-EPA-POP. They are: (1) the environmental and nuclide
specific inpuf file; (2) the INPIL subroutine input file, and -(3)
-the health effects input file. Details of the input files are
presented in the following sections.
2.2.1 Environmental and Nuclide-Specific Input File
This input file is'used"to-supply the physical and
hydrogeological characteristics of the disposal site, the
meteorological data for atmospheric dispersion and deposition,
the data for the biological pathways, and the radionuclide
characteristics and inventories.
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The data set also contains parameters describing the site
.. characteristics, the disposal technology, the human exposure
characteristics, and some specific parameters characterizing the
site and exposure scenarios. For simplification, this input file
is referred to as the main input file throughout this
documentation.
2.2.2 INFIL Subroutine Input File
The INFIL subroutine input file is used to calculate
rainwater infiltrating through the trench cap into the waste
trench. It is divided into two categories, trench cap
"".'characteristics and local- hydrological and meteorological data-;—rr
2.2.3 Health Effects Input Pile
This file contains health effect and genetic effect
conversion factors for each radionuclide. It is used to : -.
calculate the fatal health effects and serious genetic effects
through each exposure pathway.
These conversion factors are independent of disposal site
and disposal method; therefore, this file is incorporated into
the program and requires no changes from the user under normal
application.
The format for the environmental and nuclide-specific, INFIL
subroutine, and health effects input files are listed in Appendix
B, Tables B-l, B-2, and B-3, respectively.
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The definition and format of the input files for the
environmental and nuclide-specific input file and INFIL
subroutine input file are basically identical to that for the
mainframe version of the model, except for .two cards used in the
environmental and nuclide specific input file. -Modifications on
.these cards are .described, as follows: , . ^. , . .. -^. .,: „,,,!_
• '•'!." 'Card 18: The variable name RR is renamed RMECH-, -but ••-
the definition of the variable remains the
same (see Appendix B for definitions of RR
and RMECH).
2. Card 19: Two variables, RR and FTRR, are added in
"• front 'of the two original variables, -IT and
IS (see Appendix B for definitions of.RR,.
PTRR, IT, and IS) .
2.3.
DESCRIPTION OF THE SYSPOP OPERATION SYSTEM
2.3.1 General
The PRESTO-EPA-POP operation system, SYSPOP, is designed to
help the user of the PRESTO-EPA-POP model to prepare the input
data files, to perform necessary .file .management for the -,.-.:.e
execution of the pre-compiled PRESTO-EPA-POP objective module,
and to automate the execution of the PRESTO-EPA-POP model.
The program provides the capability of editing the input
data file which includes line editing of the input file, display
of the input file, line-by-line comparison with a predesignated
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input file, and insertion and deletion of radionuclides to be
considered in the analysis.
In managing the data files for the execution of the pre-
•compiled objective module, the operation system helps users to
clear the files which need to be.deleted, check the .availability
.of the storage volume,, and ..save the pre-exist ing, output., file ;..,
• ' Although there are three, input files required to-execute the
PRESTO-EPA-POP model, the SYSPOP operation system includes the
preparation of the environmental and nuclide input file only
because this file is the most complicated input file of all and
needs the most attention.
'The preparation of the INFIL subroutine-input file is ~-
excluded from the program because- there would be .only one-line,of
input data to change if there is a change in the trench cap
design.
The preparation of the health effects input file is also
excluded from the SYSPOP program because the file is independent
of site location and facility design, and no change is necessary
under normal application.
2.3.2 System Structure
The structure of the PRESTO-EPA-POP operation system
consists of many subprograms each of which performs a designated
function. These subprograms include 10 operation programs, 7
batch programs, 3 input data files and 1 pre-compiled objective
program.
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The operation programs include, DATACHK.FOR, INPOPC.BAS,
INPOPD.BAS, INPOPE.BAS, INPOPI.BAS, INPOPR.BAS, LOGO.BAS,
MENU.BAS, MENUED.BAS, AND RUNPOP.BAS. The batch programs include
COPFIL.BAT, COPY1.BAT, COPY2.BAT, COPY3.BAT, .PRINTPOP.BAT,
RUNPOPB.BAT, and.SYSPOP.BAT. The three input files are
INPOP. DAT, STPOP. DAT,- and. .POPFAC. DAT and .the. precompiled.-.,:-. ,.: -;.
objective file is POPPC.EXE.
The functions of each subprogram are described as follows:
DATACHK.FOR: an operation program which allows the user to
check the matching of the type of each input
data with that specified in the PRESTO-EPA-
POP coding.
INPOPC.BAS: an operation program.which allows the user .to
make a line-to-line comparison of the input
file with a predesignated standard input file
to locate errors in the input file;
INPOPD.BAS: an operation program which allows the user to
delete radionuclides of no concern, thus
saving calculation time;
INPOPE.BAS: an operation program which allows the user to
make line editing of the input file;
INPOPI.BAS: an operation program which allows the user to
insert radionuclides of his interest;
INPOPR.BAS: an operation program which allows the user to
review the entire input file;
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LOGO.BAS
MENU.BAS:
MENUED-.BAS
RUNCPG.BAS:
COPFIL.BAT:
COPY1.BAT:
COPY2.BAT:
COPY3.BAT:
PRINTPOP.BAT:
A program which displays the logo of the
SYSPOP program;
an operation program which displays the main
menu of operation and subsequently loads the
program selected by the operator;
an "operation program which ^displays- the .--.,1;,
•editing menu and subsequently loads the -
program selected by the operator;
an operation program which performs file
management, including saving the pre-existing
output file, checking the available storage
volume, and executing the PRESTO-EPA-POP . ,
program;
a batch program which copies an input data
file from the standard input data file;
a batch program which duplicates the current
input file, standard file and dosimetric file
for editing use;
a batch program which replaces the current
file with the updated file for editing use;
a batch program which replaces the old files...
with updated-final-files and deletes all-the* .
temporary files during the course of editing;
a batch program which gives the instruction
to print out the PRESTO-EPA-POP output file;
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RUNPOP.BAT: a batch program which prepares the files and
executes the PRESTO-EPA-POP model;
SYSPOP.BAT: a batch program which loads and runs the
LOGO.HAS program;
INPOP.DAT: an input file containing environmental and
..radionuclide-specif ic. data; ......
STPOP.DAT:. a.standardized input file equivalent to the
INPOP.DAT file;
POPFAC.DAT: an input data file which contains the fatal
health effect and genetic health effect
conversion factors; and
POPPC.EXE: . an executable PRESTO-EPA-POP module -used ,..;;
primarily to calculate the fatal health
effect and serious genetic health effect.
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3. SYSTEM INSTALLATION
The PRESTO-EPA-POP operation system is designed to be
operated on an IBM PC/AT-level microcomputer or its compatible. —
'The computer should be equipped with a. math ..co-processor... . - . .-_
(8087/80287 or equivalent) and a color monitor-having having. —--
video graphic array (VGA). The available disk storage after all
of the software has been stored should be at least one megabytes.
The system software may be installed either in a hard disk
drive or in a Bernoulli box. The same disk will also be used to
store the output file and-the temporal output -file. Normally--aid
of the system operation software, objective module of PRESTO-.EPA-
POP, the sample input and output, and the standard input file
will be transmitted to a user in a high density 5.25-inch floppy
diskette. To install the system, simply copy all of the files
into the same directory or subdirectory. The system will .then.be
ready for. operation.
4. SYSTEM OPERATIONS
The PRESTO-EPA-POP operation system program is a menu-
directed, user-friendly system. Detailed instructions of the
operations are displayed on the screen so that the user may
proceed with the operations by simply following the instructions.
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This chapter provides the supplemental instructions for the
system operation.
4.1 .START UP
To start the system proceed as follows: : ..-
a. Turn,on the power...switch,.access, .the .diskoperating .;•_.
• • system .(DOS), and.change the directory to the.. DOS ....
prompt corresponding to the drive in which the software
disk is placed;
b. Type "SYSPOP"; the logo of the operation system will
appear, and finally,
•--- c. Press any key to display .the main menu; see Figure 4-1-.--
MAIN MENU
1. Copy a New Input File from the
. .Standard Input File
2. Edit the Existing Input File
3. Test the Input File
4. Execute PRESTO-EPA-POP
5. . Print Out POP.OUT
6. End of Operation
*** Enter your selection number
Figure 4-1. Main menu of the operation system
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The system is now ready to receive the user's selection for
operation. Upon receiving the selected number, the system will
transfer the operation to the corresponding subsystem. When "End
of Operation" is selected, the system will return to the DOS
system.
4.2 COPY A NEW INPUT FILE
This option allows the user to copy a preliminary new input
file from the standard file provided in STPOP.DAT. This
operation can prevent a massive typing of the new file if the new
file is similar to the standard file. To obtain the final form
of the input file,' you-may use the editing operation discussed-in-:
the following sections.
To copy the standard file into a new input file, simply
respond ."l" to the request (see figure 4-1). To avoid this
selection being made by accident and subsequent loss of the
existing input file, the system responds with a warning to make
sure this is-indeed your selection. This warning tells you that
the copying of a new input file will result in the loss of the
old input file. Upon your confirmation, the system will
duplicate the standard file, save the copied file as the current
input file, and then return to the main-menu after informing you
of the completion of the operation.
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4.3 EDIT THE EXISTING INPUT FILE
This option is designed to -allow the user to edit the input
file which is stored in the INPOP.DAT file. This selection
provides five functions: (1). edit the input file; (2) compare the
input file with the standard file; (3) review the "input file; (4)
delete radionuclides; and (5) insert .radionuclides. . .,-:.-.,;
When the selection is made by the-user, the system .displays.
the menu for input file editing. Figure 4-2 shows the display of
the menu.
Menu for Editing
1. Edit the Input File
2. Compare the Input File with
the Standard File
3. Review the Input file
4. Delete radionuclides
5. Insert radionuclides
6. End of Editing
***Enter selection number
Figure 4-2. Display of editing menu
4.3.1 Edit the Input File
When the option of editing an input file is selected the
system will transfer the control to the INPOPE.BAS program which
is followed by the read-in of the current input file.
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If the input file is incomplete, the program will give an
error message, "Input file is incomplete," and then return to the
main menu.
If the input file is complete, the system will display the
instructions for file editing,-as shown in Figure-:4>3. .The
•system will continue, to -request the. first card number.,of...the,.:-.:.
block (altogether 21 .lines or cards in a block).-that you wish to,
edit. If the card number is No. 29, the program will make an
additional request for the first radionuclide number of the block
that you wish to edit. You should see the screen display a whole
block of 21 line input data with its top line being highlighted
'indicating that-the line is being edited. • •-- ~
To edit the highlighted line, proceed as instructed in
Figure 4-3. If no edit is required for that line, all you need
is to press the [enter] key. After the updated date are entered,
the system will display the updated line of input data and move .
on to highlight the next line.
To terminate the editing of the current block of input data,
you may simply press the [esc] key. The system will go back to
request the first card number of the block that you wish to edit.
This will commence another editing cycle for the newly requested
block.
You may escape from the editing mode by pressing the [esc]
.key when the first card number of the editing block is requested.
Based on your response, the system will either replace the input
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file with an updated one or do nothing to thie existing input file
and return to.the menu for editing.
Instructions for,File Editing
-1. .Input -the .starting: card .number. (and.-nuclide., number .-
if the starting number is above 28} of. the block
- you wish to edit;
2. Highlight the succeeding lines by pressing "enter",
"cursor up", or "cursor down" key until the line
you wish to edit is highlighted;
3. Edit the line by using "cursor right" key to copy,
. ,. new:character to replace, "backspace" or "cursor
left" key to change the Previous entry, "insert"
. key .to..insert, and "del" key to delete;
4; Press "enter" key when all of the necessary editing
is completed;
5. Repeat steps 2, 3, and 4 until all of the lines you
wish to edit are completed; and
6. To quit or.to move to another block, simply press
"esc" key.
***Press any key to continue
Figure 4-3. Display of the instructions for file editing
4.3.2 Compare the Input File
This option provides the capability-of a line-by-line ••••-
comparison of the current input file, INPOP.DAT, with the
standard file, STPOP.DAT, and is primarily designed for checking
the format and numerical field of the input data in the current
file. It is.particularly useful in locating the invalid input
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data which caused the run time error in the execution of the
PRESTO-EPA-POP model.
When this option is selected, the system starts with the
read-in of the standard and the current files.. If the current
file is incomplete, :the system will ..issue- the- warning message,: :.-
"INPOP.DAT is incomplete," and ..then return .to-: the.~menu..for . .
editing. If the file is complete, the program displays a block
of three line information for each card starting from card number
1. Because of the limited space available on the screen, seven
blocks (only six blocks for the radionuclide-specific input data
cards) are displayed on a page. Each block displays the data
-input from the standard input .file on the first line, the .input™;
data from current input file on the second line, and the card •
number and the data field location on the third line.
You may move the display to the next page by pressing the
"enter" key. To terminate the option, press the "esc" key. When
the "esc" key is pressed, the system will return to the menu-fcr-
editing and will be ready for another selection.
4.3.3 Review the Input File
This option provides the capability for quick review of the
entire current input file. .-.It ;can..rbe.: used: to check completeness.-.
of the file or to scan the input file for any obvious error.
When this option is selected, the system will start with a
read-in of the current input file and check the completeness of
the file. If .the file is incomplete, the system will issue a
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warning message "INPOP.DAT is incomplete," and then return to the
menu for editing. If the file is complete, the system will
display the input data starting from card No. l and displays 20
lines on a single page. To view the next page, you may simply
•press "enter" key; You may-terminate the reviewing option at any
time by pressing the-"esc" key. When this is. done, the .system ..
will return to the .menu for editing and will be ready for another
selection.
4.3.4 -Delete Radionuclides
This option provides the capability of deleting
radionuclides of no .interest to the user. 'For maintaining the ---ttr
capability of comparing with.the.standard input file and matching
the number of radionuclides with the health effects conversion
factor table, the same deletion of a radionuclide is
automatically conducted for the standard input file and health . ..
effects conversion file.
When this option is selected, the system will issue the
warning, "Deletion of radionuclides from the input file will also
result in the deletion of the same radionuclides from the
standard input file and dose conversion factor table." This
warning gives the user a chance "to save^the-existing files.
Upon the approval of the user, the system will proceed with
matching the radionuclide name among the current input file,
standard file, and dose conversion factor file. If there are
inconsistencies, the system will print them out and return to the
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menu"for editing. If no inconsistency is found, the system will
proceed.to print out the current radionuclide sequence and
request for the range of radionuclide numbers to be deleted.
Upon receiving the range of radionuclide numbers to be
deleted, the system will proceed with the deletion of the , •-.--
designated;radionuclides -from-the current input.'file, .the,,.-.- ..,,,-,
-standard input-file,-and the .health effects conversion..file; .and,.
then print out the new radionuclide sequence. The system will
then continue to ask for another deletion. If the user approves
the request, the system will move on to request for the range of
radionuclide numbers to be deleted and the whole cycle will be
repeated. If the user denies'this request, the system will-moves:.
on to ask if the user wants to save the new files. If it is -..-
approved, the system will replace all .three .files, with the
updated files and return to the menu for editing; otherwise, the
system will return to the-menu for editing, without replacing, the ..
updated files.
The PRESTO-EPA-POP model takes up to 40 radionuclides with
each radionuclide assigned a number from 1 to 40. These numbers
are used to identify radionuclides. The range of "radionuclide
numbers" must fall between 1 and 40 or the program will not
accept the entry.
4.3.5 Insert Radionuclides
This option provides the capability of inserting
radionuclides which are of particular interest to the user. For
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'maintaining the capability of comparing "with the standard input
file and matching the number of .radionuclides with the dose
conversion file, the same insertion of radionuclides are also
automatically processed for the standard input file and health
effects conversion file. . .
• -When this option..is selected,, -.the system .will ..issue ..the -
•warning-"insertion .of radionuclides .into the input file will .also
result in the insertion of the same radionuclides into the
standard input file and dose conversion factor table." This
warning gives the user a chance to save the existing files. :
Upon approval from the user, the system will proceed with
matching the radionuclide:name ^between.the current. :input. f iley:"^n
standard file, and health effects..-conversion.factor, table. ..If.. ..
there are inconsistencies, the system will print them out and
return to the menu for editing. .If no inconsistency is found,
the system will proceed, to print .out ..the-current radionuclide, .,
sequence and request for the range of•radionuclides to be
inserted. The total number of radionuclides that the program can
take is limited to 40; consequently, the resulting number of
radionuclides after the insertion should also be limited to 40.
Upon receiving the range of numbers of radionuclides to be
inserted, the system will proceed- to insert-the-designated
radionuclides into the current input file, the standard input
file, and the health effects conversion file; print out the new
radionuclide sequence; and ask for another insertion. If the
.user approves the request, the system will continue to request
20
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the range of radionuclide numbers to be inserted and the whole
cycle will be repeated. If the user denies the request, the
system will move on to ask if the user wants to save the new
files. If it is approved, the system will replace all three
files with the updated files and return .to the; |