United States Environmental Protection Agency Industrial Environmental Research Laboratory Research Triangle Park NC 27711 Research and Development EPA-600/S8-84-012 May 1984 Project Summary Particulate Data Reduction System (PADRE) User Guide W.M. Yeager and C.E. Tatsch The Particulate Data Reduction (PADRE) system is an interactive com- puter program that facilitates entry, reduction, and analysis of cascade im- pactor data for panicle size distribu- tions. PADRE was developed to ensure the quality of data included in the Fine Particle Emissions Information System (FPEIS), a component of the Environ- mental Assessment Data Systems (EADS). (NOTE: EPA-600/8-80-007, NTIS No. PB 80-222433, is the FPEIS user guide.) PADRE can be used to store, review, edit, and analyze data and, through a variety of data checks, to identify invalid or suspect data. Impac- tor stage cut points are calculated, and cumulative and differential mass con- centrations are determined and inter- polated to standard diameters. This document is a working reference for users at a computer terminal. The prin- cipal technical reference for PADRE is a separate Reference Manual. This Project Summary was developed by EPA's Industrial Environmental Re- search 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 purpose of the PADRE system is to facilitate entry of validated cascade impac- tor data from representative in-stack runs into the Fine Particle Emissions Information System (FPEIS). Reduction of observed data to determine the effective stage cut diame- ters as well as the cumulative and differen- tial mass concentrations takes only a few seconds; this capability permits test plans or operating conditions to be modified to op- timize data quality. Data entered through PADRE are not automatically included in FPEIS; the test contractor is expected to designate representative runs after he has validated the data. Overview PADRE involves four processes: (1) data entry, (2) data reduction, (3) data com- parison, and (4) data designation for inclu- sion in FPEIS. In the entry process, observable data are read from an interactive computer terminal operated by the user. These data may then be reviewed and modi- fied. In the reduction process, effective cut points (stage DM's) and mass concentrations for each impactor stage are computed under actual operating conditions. Mass concen- trations are interpolated to standard inter- vals. In the comparison process, data from several user-specified runs are reduced and statistics at each standard diameter are com- puted. In the designation process, observ- able data from user-specified runs are printed in the format of EADS data input forms. The user may submit these forms to EPA to in- clude data in the EADS. Prerequisites Approval of EPA The PADRE system is operational at EPA's National Computation Center (NCC) on the UNIVAC 1100/83 computer. The system may be made available to all users of cascade impactors: EPA personnel, EPA contractors, and State agencies, as well as commercial and consultant impactor users. EPA provides this resource tool to analyze cascade impac- tor data with the understanding that users will share validated data from representative runs by submitting them for inclusion in the EADS/FPEIS data base. ------- Data While new users are encouraged initially to practice with PADRE using artificial or sample data, it is assumed that most users will be using actual data from in-stack im- pactors. PADRE is no substitute for a careful record of all operating conditions and ob- served data. New users may wish to tran- scribe these data to PADRE data entry forms, as described in the PADRE User Guide. This procedure will help users to become familiar with the variable names and brief descriptions used in the program, prepare users for the order of the computer prompts for user-supplied data, and ensure that all necessary data have been recorded. Calibration constants for the user's impac- tor are required in order to calculate the DSO'S. These may be submitted to the EPA Project Officer prior to using PADRE system, so they will be available to the system when the impactor configuration is specified. Calibration information for a specific impac- tor is sought by the impactor type (e.g., Andersen and Brink), the impactor model (e.g., Mark III), and a unique number as- signed to the set of plates used in the calibra- tion run. If a user does not know the calibration constants for his impactor but wants to conduct preliminary analyses, he may specify the impactor type and model with plate set ID zero to access "generic" calibration constants. The validity of the DSO'S will, of course, depend on how close- ly his impactor corresponds to the mythical impactor the generic calibration constants describe. Terminal Access to PADRE requires an interactive computer terminal. All program printed lines contain less than 80 characters. Any terminal that can access the NCC in Research Tri- angle Park, North Carolina, may be used, but one that produces a permanent "hard copy" to document the PADRE session is recom- mended. The basic requirement is that the terminal emulate a teletype at 30 or 120 characters per second and handle computer communications with even parity. Use of PADRE User Authorization Users should check with the EPA Project Officer, Gary L. Johnson, (919/541-7612) to obtain the proper authorization to access the EPA/NCC. PADRE is readily available to users holding a valid NCC account number; special arrangements may be made for other users to access the NCC (and PADRE) on a case-by-case basis through the National Technical Information Service (NTIS). All users will be expected to bear the costs of the computer use. PADRE Logical Control Users can follow several paths through this program. For example, the user may wish only to enter pre-weights for several sets of substrates, or may wish either to up- date or to reduce previously entered data. The user will be offered a series of options at decision points. At each decision point, the user will be asked a question: "DO YOU WISH TO ...? ENTRY Y OR N." The user may choose either to accept the option (e.g., enter data for a new run) or to continue to the next decision point in the program, where another option will be offered. The user indicates a decision by entering Y or N and then depressing the return key on the terminal. Any response other than Y or N will be rejected, and the user will again be prompted to enter Y or N. There are three basic sections or loops. At the end of each section, the user has the op- tion either to return to the beginning of that section or to proceed to the next section. After the last section, the user has the op- tion to return to the beginning of the first section. If the user enters Y after the first prompt: "Do you want an introduction to PADRE?", a 60 line flowchart, outlining the logical flow, will be printed on the terminal. No "dead ends" exist in PADRE. If the user takes a wrong path, he can drop through to the bottom of the section, or of the program, and return to the beginning. Data Entry and Review Eventually, the user will reach a point when he will enter observed data. The com- puter will prompt him with a brief descrip- tion of, and the name associated with, the data item. The computer will then wait for the user to enter the data. After all items have been entered, there will be a review of the data, listing both the names and values. The user will then have an opportunity to mark which, if any, items he wishes to change. After the marked items have been changed, there will be another review and opportunity to make further changes. When the user has been through the entire list of variables and has made no changes, the system will proceed to the next decision point. Retrieving Stored Data PADRE manages all data storage and retrieval for the user, but certain user re- quirements are basically matters of good housekeeping. These requirements are also essential for retrieving stored data: • Substrate weights are assigned an ID by PADRE. • Run data are saved by PADRE using multiple keys. To retrieve stored data, the user must specify these keys exactly as originally specified or assigned. Whenever PADRE stores data, it prints a message with the keys that must be used to retrieve those data. These keys should be recorded for future reference. If the user wants to recall data for an old (previously entered) run, he must specify the same site ID and test date as when the data was originally entered, as well as the run number assigned by PADRE. The'user will be prompted for each of these items at the appropriate point in the session. If the user wants to recall data from an old test in order to modify the test data, he must specify the same site ID and test date as he did when the test data were entered. He can then change any of the test data; if any of the key items are changed, the system will alter them for all runs in that test. Sample Sessions Figures 1 through 4 show actual PADRE dialog for basic operations. A previously entered set of data is modified and reduced. Both the terminal and the expanded output are reproduced. ------- DO YOU HISH TO ENTER OR MODIFY ANY TEST DATA? ENTER Y OR N. >N DO YOU HISH TO ENTER DATA FOR A RUN? ENTER Y OR N. >Y THE COMPLETE ID FOR THIS RUN IS CNTRTR'RTI SITE-RTP IDATE- 32183 IRUN» 1 ••• RECORD THESE VALUES IN YOUR NOTEBOOK ENTER RUN COMMENTS. RCOHH >D*«OHftritt PADRE'i cirakilitr to icccrt Frtt for* coMtnts ENTER DATE OF RUN. JOATE. AS HHDDYY >32383 ENTER STARTING TIME OF RUN, ISTART, AS HHHH (24 HR CLOCK) ENTER DURATION OF RUN, OUR, IN MINUTES ENTER RUN TYPE, RTYPE! I FOR INLET, 0 FOR OUTLET •*• THE CHARACTER o IS NOT APPROVED FOR CODES. RE-ENTER CODE • >0 ENTER PERCENT H20 IN STACK GAS ENTER COMPOSITION OF DRY STACK GAS ENTER PERCENT C02 ENTER PERCENT CO ENTER PERCENT N2 ENTER PERCENT 02 ENTER AMBIENT PRESSURE, PAHBNT (INCHES HG) ENTER^STACK PRESSURE RELATIVE TO AMBIENT, DPSTK (INCHES H20) X) ENTER STACK TEMPERATURE, TSTACK (DEC F) 280 NTER STACK GAS VELOCITY, VSTACK (FT/SEC) ENTER IHPACTOR TEMPERATURE, TIHP (DEC F) MAS EPA METHOD 3 USED TO DETERMINE THE FLOH RATE? ENTER Y OR N >N ENTER NAME «21 CHAR) OF METHOD USED ENT£R°IHPACTOR FLOH RATE, FLOH (ACFH. STACK COND.) X>.358 ENTER PHYSICAL DIAMETER OF LARGEST PARTICLE COLLECTED, DHAX (MICRONS) ENTER NOZZLE DIAMETER, DNOZZ (INCHES) ENTER CUTPOINT OF NOZZLE, CUTNOZ (MICRONS) OR 0 (ZERO) FOR PADRE TO CALCULATE IT ENTER CUTPOINT OF CYCLONE, CYCL (MICRONS) OR 0 (ZERO) IF NONE USED ENTER NOZZLE/CYCLONE MASS, CHASS (HG) HAS BACKUP FILTER USED? ENTER Y OR N. DID BACKUP FILTER COLLECT LARGE PARTICLES? ENTER Y OR N >NO DO YOU HANT TO INTERPOLATE MASS CONCENTRATIONS TO NON-STD. DIAH.? ENTER Y OR N >NO ENTER IHPACTOR TYPE, IMPNAM bN f !SEN IK ENTER IHPACTOR MODEL, IHPMOD XtNKNOMN ENTER PLATE SET ID, IPLATE. OR ZERO FOR GENERIC CALIBRATION ENTER NUMBER OF STAGES USED IN IHPACTOR, NS ENTER ID OF HEIGHT RECORD '•*• MASS ON NOZZLE IS LOU DATA FOR RUN 1 BY RTI AT RTP ON 32183 HAS BEEN SAVED IN THE TRIAL DATA FILE DO YOU HANT TO ENTER DATA OR TO MODIFY HEIGHT OR TEST DATA? ENTER Y OR N Figure 1. Entering run data. ------- DO YOU UISH TO LIST THE DATA FOR RUN? ENTER Y OR N >N DO YOU HISH TO MODIFY ANY "RUN CONDITIONS? ENTER Y OR.N **» ANOTHER RUN HITH THIS ID ALREADY IxiSTS THE NEW RUN NO. IS 3 ENTER RUN COMMENTS >This run propaaated froM fl ENTER NEW VALUE FOR I START >1200 ENTER NEW VALUE FOR DUR >60 ENTER PAMBNT ENTER C02 CO N2 A MARK UNDER VARIABLE(S) YOU HISH TO MODIFY OR RETURN DPSTK VSTACK TSTACK TIMP DMAX CYCL DN02Z CUTNOZ CMASS A MARK UNDER VARIABLE(S) CO N2 02 YOU W ISH H20 TO MODIFY NS OR RETURN IDSUSS ACUTPT DER VARIABLE(S) IMPNAM IMPM YOU UISH TO MODIFY O IPLATE FLOW OD RETURN METHOD 318 ?EST VARIABLE(S> JDATE I .... YOU HISH TO MODIFY OR RETURN START OUR RTYPE ENTER A MARK UNDE BF FLARGE ENTER A MARK UNDER IRUN RCQ *** MASS ON NOZZLE IS LOU DO YOU UISH TO MODIFY THE INVALID VALUES? >N 3 BY RTI AT RTP ON 32183 HAS BEEN SAVED BY CONTRACTOR RTI , AT SITE RTP , ON DATE TCOMM* Demonstrate PADRE uith saitple Andersen data Fro* CIDRS ENTER Y OR N TEST COMMENTS Manual PARTICLE DENSITY M BiV^Y11* (GM/COI RHO* 2.400 RUN COMMENTS: RCOMM* This run propagated front #1 DATE OF RUN! JDATE* 32383 AMBIENT PRESSURE (IN HG) START TIME: i START* 1200 STACK PRESS URT AMBIENT (IN RUN DURATION (MINK OUR* 60.0 STACK GAS VELOCITY (FT/SEC) RUN TYPE: RTYPE* o STACK TEMPERATURE (DEC n: x CARBON DIOXIDE: CQ2* 14.0 IMPACTOR TEMPERATURE (DEC F x CARBON MONOXIDE: co* .0 MAX. PARTICLE DIAM. (MICRON x NITROGEN: NZ* so.o CYCLONE CUT POINT (MICRONS) x OXYGEN: 02* e.o NOZZLE DIAMETER (INCHES): x WATER VAPOR: HZO= a.o NOZZLE CUT POINT (MICRONS): BACKUP FILTER USED? BF* YES LARGE PARTICLES ON FILTER? FLOW RATE DETERMINATION.' METHOD=UNKNOHN IMPACTOR TYPE: IHPNAM*ANDERSEN IMPACTOR FLOW RATE (ACFM>: IMPACTOR MODEL: IMPMOD*UNKNOUN IMP. PLATE SET IDMPLATE* 3 SUBSTRATES ID: NO. IMP. STAGES USED NS* 8 DESCR*GREASED FOIL NO. JETS DIAM. CUMDP CALIB NOZZLE .000 MG 264 .1671 .0000 .3050 STAGE 1 .000 264 .1281 .0000 .4300 STAGE 2 .290 264 .0953 .0000 .4100 STAGE 3 .580 264 .0780 .0000 .3850 STAGE 4 .180 264 .0547 .0000 .3410 STAGE 5 1.530 264 .0359 .1760 .3200 STAGE 6 4.390 264 .0269 .2940 .3310 STAGE 7 1.900 156 .0253 1.0000 .2740 STAGE 8 .390 IMPACTOR DP SCALING FACTOR 1.287 FILTER .540 MG WANT TO RETRIEVE ANOTHER RUN? ENTER Y OR N >N DO YOU WISH TO RETRIEVE A TEST? ENTER Y OR N >N PAHBNT* H20>: DPSTK* : VSTACK* TSTACK* : ' CYCL* DNOZZ* CUTNOZ* FLARGE* FLOH* IDSUBS* 30.06 280.0 280.0 4§:§ 1.000 .00 NO .358 0 Figure 2. Modifying run data. ------- WANT TO RETRIEVE ANOTHER RUN? ENTER Y OR N >N 00 YOU WISH TO TO REDUCE THE DATA? ENTER Y OR N >Y PARTICULATE DATA REDUCTION AND ENTRY SYSTEM DATA FOR TEST BY CONTRACTOR RTI , AT SITE RTI SAMPLING AT 109.4 Z OF ISOKINETIC RATE WANT TO SEE RESULTS USING CLASSICAL (STOKES) >Y 03/21/83 16:48:06 1 , ON DATE 32183. RUN NO. 1 DEF. OF DIAH.? ENTER Y OR N DcMonstratt PADRE's capability to acctpt Fret fom coMcnts TOTAL MASS 7.9245-003 1.1978-002 1.8134+001 2.7412+001 GR/ACF GR/DNCF MG/ACM HG/DNCH DMAX= 48.0 MICRONS STAGE NOZZLE I 2 3 4 5 6 MASS MASS CUM. MASS 050 GEO. MEAN DM/DLOGD (MG) (MG/DNCM) (MG/DNCM) (MICRONS) (MICRONSI .01 1.22 .29 .58 .16 1.53 4.39 .02 3.03 .72 1.44 .45 3.80 10.31 27.39 24.36 23.63 17.94 7.03 38.80 9.16 8.66 1.83 .86 43.60 18.85 8.91 FILTER .54 1.34 *»* CUT POINTS FOR STAGES -1 MEASURED DATA FOR STAGE, *»* CUT POINTS FOR STAGES 1 MEASURED DATA FOR STAGE, INTERPOLATED TO STD. INTERVALS: .19 0 ARE SIMILAR OR INVERTED 0 WITH 050' 38.80 OMITTED 2 ARE SIMILAR OR INVERTED 2 HITH 050* 8.66 OMITTED (VALUES AT DIAM. MARKED WITH (MG/DNCM) 2.45-001 4.84+000 2.97+001 9+001 3.33+001 2.37+001 3.24+000 4.46+000 DN/DLOGD (NO/DNCH) 2.35+003 5.74+005 3.34+007 4.89+011 UANT >Y VO PLOT CUM. Z MASS? 1.47 3.56 9.72 13.28 20.15 22.76 24.69 25.95 26.59 ENTER Y OR N .30 .63 1.00 1.25 2.50 6.00 10.00* 15.00* 20.00* FROM INTERPOLATION FROM INTERPOLATION * ARE EXTRAPOLATED) .00 2.22+001 3.99+001 3.35+001 1.34+001 9.59+000 8.37+000 5.98+000 4.37+000 Figure 3. Reducing run data. ------- 00 YOU WISH TO REVIEW ALL RUNS IN A TEST? >N ENTER Y OR N? DO YOU WISH TO COMPARE SEVERAL RUNS? ENTER Y OR N >Y ENTER DIAMETER DEFINITION (^PHYSICAL, 2=AERODYNflHIC, 3»AERODYNAMIC IMPACTION) .m. MASS, OR 3-CUM. Z HASS? >3 THE STD.DEV.. MINIMUM, AND MAXIMUM OF THE CUM. Z MASS HILL BE PRINTED ENTER THE NO. OF STD. DEV. TO BE USED TO IDENTIFY POTENTIAL OUTLIERS. ENTER INDICES OF RUNS TO BE COMPARED SEPARATED BY BLANKS OR ENTER IN TO COMPARE ALL INLET RUNS IN THE TEST OR ENTER OUT TO COMPARE ALL OUTLET RUNS IN THE TEST *** MASS ON STAGE 7 IS LOU *** MAX. PARTICLE DIAM., DMAX. IS LARGE REDUCE DATA FOR RUN 1 Repetitive output omitted *** MASS ON NOZZLE IS LOU *** WEIGHT RECORD *** MASS ON NOZZLE IS LOU ***** NET HEIGHTS ~ *** DATA FOR RUN RTI 66 IS DELETED "LC^ATfNCOMPLETE ^ CANNQT g£ US£D TEST SITE TEST DATE RUN NUMBER RUN DATE START TIME TOTAL MASS STD. DIAM. 3 .30 4 5 6 8 9 10 11 DATA STD. .63 1.00 1.25 1:38 10.00 15.00 20.00 COL COL COL COL COL 11376 11376 11376 11376 11376 12345 11376 11376 11376 11476 11476 1450 1715 1822 1520 1600 6.739E+03 7.490E+03 4.203E+03 1.495E+03 3.077E+03 7. CUM. X MASS < D50 .48 .90 .22 1.32 .99 1 2 174 24 35 44 COMPARISON DIAM. (MICRONS) 3 4 5 6 7 8 9 10 11 .30 .63 1.00 1.25 2.50 6.00 10.00 15.00 20.00 NO. RUNS 6 6 6 6 6 6 S 6 6 .99 1 .89 2 .75 3 :o°7 si .81 16 .17 22 .28 30 .51 1.21 .39 2.41 .09 3.44 'si li'83 !94 23! 83 .66 30.05 .71 37.78 FOR 6 INLET RUNS BY DM/DLOGD (KG/DNCM) 7.99E+01 1.03E+02 3.39E+02 4.41E+02 1.12E+03 1.01E+03 1.51E+03 2.76E+03 3.70E+03 DO YOU WANT TO PLOT CUM Z >Y CUMULATIVE MASS < 050 3.30E+01 6.33E+01 1.08E+02 1.46E+02 3.65E+02 7.35E+02 1.01E+03 1.35E+03 1.76E+03 MASS? ENTER 3 5 6 244 30 35 39 RTI .20 .34 .35 :§§ .53 .52 .64 CUM. Z AVG. .74 1.53 2.61 3.39 8.38 16.19 21.55 28.12 35.70 Y OR N STD 1 2 2 ii 17 23 31 MASS . OEV .40 .87 1.41 1.54 4^78 5.81 6.32 5.76 .51 .35 .84 :H .68 .62 .67 < • D50 MIN • 1.' 1. 12! 15. 21. 30. 1?SL76 6 11576 1135 075E+03 .55 .78 1.27 1.88 15I53 21.69 30.10 22 78 27 88 10 53 69 10 MAX. 1 .32 3.20 5.34 14 96 24*. 66 30.53 35.52 44.28 Figure 4. Comparing several runs (part 1 of 2). ------- COMPARISON OF CUM. Z MASS FROM 6 RUNS AT STD. DIAM. 54 NEAR- DO YC >Y INPUT POINTS. 0 HERE OUTSIDE LIMITS \ " * * * \ \ \ \ \ \ \ \ 80.00 > \ \ \ \ \ \ 60.00 > \ \ \ \ \ \ \ \ 40.00 > \ \ \ \ \ \ \ 1 \ 20.00 > \ 1 \ \ 1 1 \ 3 \ \ 1 \ 1 3 \ 1 I \ 134 .00 > 6 521 -1.000 -.600 -.200 .200 .600 LOG10< DIAMETER) A A A AAA A A 0.1 0.15 0.3 0.625 1.0 2.5 6.0 DIAMETER (MICRONS) !Y POINTS MAY BE COMBINED )U WISH TO REPEAT THE COMPARISON EXCLUDING SOME RUNS? — « « \ \ \ \ \ \ \ \ \ \ i \ \ \ \ \ \ \ \ < \ \ \ \ \ \ \ 1 \ I 1 \ 1 \ 2 \ \ 113 \ \ \ 1 \ 1 2 \ 1 < \ 2 \ 1 \ \ \ \ \ \ 1.000 1.400 A A A 10. 20. ENTER Y OR N Figure 4. Comparing several runs (part 2 of 2). ------- W. M. Yeager and C. E. Tatsch are with Research Triangle Institute, Research Triangle Park, NC 27709. Gary L. Johnson is the EPA Project Officer (see below). The complete report, entitled "Paniculate Data Reduction System (PADRE) User Guide," {Order No. PB 84-178 417; Cost: $8.50, subject to change) 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: Industrial Environmental Research Laboratory U.S. Environmental Protection Agency Research Triangle Park, NC27711 United States Environmental Protection Agency Center for Environmental Research Information Cincinnati OH 45268 Official Business Penalty for Private Use $300 PS 0000329 U 5 tNVIR PROTECTION AGtNCY KtblON 5 LIBRARY £30 S UEARttURN i>TREtT CHICAGO 1L 60604 U.S. GOVERNMENT PRINTING OFFICE: 1964-759-102/951 ------- |