United States
Environmental Protection
Agency
Air and Energy Engineering
Research Laboratory
Research Triangle Park NC 27711
Research and Development
EPA/600/S8-88/092 Mar. 1989
&EPA Project Summary
Tutorial Manual for CAT
(Controlling Air Toxics),
Version 1.0
G. S. Shcjreef, M. T. Johnston, E. P. Epner, and D. Ocamb
The manual describes the
operation of an interactive and
user-friendly software package,
Controlling Air Toxics (CAT), that can
be used In the review of air emission
permit applications.
The engineering software for this
computerized advisory system is
written for the IBM PC. The program
allows this input of information on the
air emission stream characteristics
as well sis other information in the
permit explication. The program
provides guidance on appropriate
control devices and allows the
selection of a specific pollut-
ant/control device combination for
evaluation. Included in this program
are thermal and catalytic incin-
erators, flares, carbon adsorbers,
absorber;, condensers, fabric filters,
and venturi scrubbers. The program
calculates design parameters and
estimates costs for each control
device selected. The results can be
compared against the permit
applicant's actual or proposed
design. A report generator is
included in the program.
This Project Summary was devel-
oped by EPA's Air and Energy
Engineering Research Laboratory,
Research Triangle Park, NC, to
announce key findings of the
research project that is fully
documented in a separate report of
the same title (see Project Report
ordering information at back).
Introduction
The Environmental Protection
Agency's (EPA's) Control Technology
Center (CTC) and the New Jersey
Department of Environmental Protection
(NJDEP) collaborated to produce a
computerized advisory system for
evaluating Controlling Air Toxics (CAT).
CAT should significantly aid in the review
of permit applications. The engineering
calculations are based on the EPA
document, Control Technologies for
Hazardous Air Pollutants, EPA/625/6-
86/014, September, 1986, a document
that has been used extensively by state
and local personnel with favorable
results. After talking to the users and
examining the document, it became
apparent that the material in the
document would be even more useful on
a computer, eliminating the necessity of
repetitively performing complex
calculations.
Description
The program was written for the IBM
PC using Microsoft C V3.0 compiler and
Windows for Data Library V1.0 for screen
and keyboard interaction. It is compiled
and requires no special software to run.
CAT uses a Lotus style menu which
always appears at the top of the
computer screen. A description of each
menu option is given below the menu
option line and the line below is used for
instructions to the user.
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The program has seven main menu
options: Plant, Stream, Device, Review,
File, Clear, and Quit.
Plant
The first menu option activates tne
plant identification information form. The
form contains fields for the company
name and address, the name and
telephone number for the contact within
the plant, and the reviewer.
Stream
The sub-menu under the main menu
option, Stream, has four options: Type,
Parameters, HAP, and Clear. The Stream
option is used to enter characteristics of
the emission stream by entering its type,
its physical parameters, and the
pollutants it contains.
Device
There are two options in the Device
sub-menu: Type and Parameters. This
sub-menu is used to specify the control
device of interest and to input the
variables to be used in the design and
cost calculations for that control device.
Review
There are four options in the Review
sub-menu: Evaluate, Cost, View, and
Print. This sub-menu is used to
calculate the results and view them on
the computer screen or write them to a
file or to the printer for later reference.
File
There are two options in the File sub-
menu: Save and Recall. This option
allows the user to save the evaluation in
progress and recall it later.
Clear
The Clear option allows the user to
erase all data from the CAT program and
begin again without having to leave the
program and re-enter from DOS.
Quit
The Quit option allows the user to
leave the CAT program and exit to DOS.
Operation
The permit reviewer enters information
on the air emission stream
characteristics as well as other
information provided in the permit
application. A specific pollution control
device is then selected for evaluation.
Eight control devices are available:
thermal incinerators, catalytic incin
erators, flares, carbon adsorbers
absorbers, condensers, fabric filters, anc
venturi scrubbers. The program ther
calculates design parameters anc
estimates costs for each contro
technology selected. The results can be
compared against the applicant's actua
or proposed design.
Data bases are included in the prograrr
to assist the user in characterizing the
emission stream. One data base list;
pollutants commonly associated with <
particular standard industrial classificatior
(SIC) code. Another data base include:
chemical characteristics for 35C
chemicals.
The program is designed to easily
allow what-if calculations, allowing the
reviewer to change one or more
parameters and recalculate the results. /
report generator is included in the
program. This report is a tutorial manua
which was written for use with the
computer program and contains step b}
step instructions for its use. It alsc
includes appendices listing the inputs
required for each control device as wel
as documentation of how the costs were
calculated and their basis.
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G. Shareef, M. Johnston, E. Epner, and D. Ocamb are with Radian Corporation,
Research Triangle Park, NC 27709.
Sharon L No/en is the EPA Project Officer (see below).
The complete report consists of paper copy and diskettes, entitled "Tutorial
Manual for CAT (Controlling Air Toxics), Version 1.0:"
Paper Copy (Order No. PB 89-158 7451 AS; Cost: $15.95, subject to
change)
Diskettes (Order No. PB 89-158 7371 AS, Cost: $55.00 subject to
change)
(Cost of diskettes include paper copy.)
The above items will be available only from:
National Technical Information Service
5285 Port Royal Road
Springfield, VA 22161
Telephone: 703-487-4650
The EPA Project Officer can be contacted at:
Air and Energy Engineering Research Laboratory
U.S. Environmental Protection Agency
Research Triangle Park, NC 27711
United States
Environmental Protection
Agency
Center for Environmental Research
Information
Cincinnati OH 45268
Official Business
Penalty for Private Use $300
EPA/600/S8-88/092
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