Document b59KaLvDwz9abbnqj1jjDZr66

INDUSTRIAL HYGIENE REPORT 19BU CHLORINATED SOLVENTS PLANT LOUISIANA DIVISION BY GLYN BOUDREAUX AND DANNIE KENNEDY MAY 22, 1985 DO 010901 CONFTDFNTTAL CHLORINATED ORGANICS SURVEY 1984 CHLORINATED SOLVENTS PLANT DO 01 090;? OONFTOFNTTA! INTRODUCTION Chlorinated organics monitoring was conducted on (foury Jobs and seven areas during 198& The OT sampleman job was emphasized. The personnel and area samples were analyzed for carbon tetrachloride, perchloroethylene, propy lene dichloride, ethylene dichloride, 2,3 dichloropropene and '1,1,2-trichloroethane. MONITORING PROCEDURE Calibrated Sipin SP-1 Personal sampler pumps were employed to monitor Solvents Block personnel. A pre-packaged 600 millimeter duel section acti vated charcoal glass tube* was attached to each pump by a 2' length of Tygon tubing. The charcoal sampler tube was then attached to the lapel of the worker to monitor his breathing zone. SAMPLE PREPARATION Samples were desorbed by transferring the activated charcoal from the front section of each tube into a 25 ml glass vial with a mininert valved top con taining lo ml carbon disulfide. Vials were then shaken pefcadasM*i-y for *e hnrn--ir>'1 prior to analysis. SAMPLE ANALYSIS A Perkin-Elmer, Model 3920 B, gas chromatograph equipped with a flame ioni zation detector was used for the analysis. This chromatograph was inter faced to a Hewlett-Packard, Model 21 MX computer which determined concentrations based on the integrated peak area. Chromatographic constants are as follows: Column: 6' x 1/8" ss 201 tricreasol phosphate on Chromasorb P, 60/80 mesh. Temperature: Oven Injector Detector 85C 150C 150C Carrier Gas: Helium Range: XI Sample Size: 2 microliters Elution Times: CS? Carbon Tetrachloride Ethylene Dichloride propylene Dichloride 2,3 Dichloropropene Perchloroethylene 1,1,2 Trichloroethane 1.92 minutes 3.62 minutes 6.60 minutes 7.81 minutes 8.51 minutes 10.61 minutes 19.66 minutes SKC, Lot 107 charcoal tubes, 400 mg front section, 200 mg back- section. DO 010903 CONETDENTTAl CALCULATIONS The parts per million of each chlorinated hydrocarbon were calculated by the Hewlett-Packard computer. The accuracy of these calculations was verified by daily calibration with known external standards. The parts per million by weight were then converted to parts per million time weighted average exposures by volume using a separate computer program which uti lized the following equation. ppm (v) air = (wt. of CS?(g)) (.0821)(K) (ppm from chromatogram) (MW) (L) Where: CSj> .0821 K used for desorption in grams- gas constant (converts grams to liters). degrees Kelvin (C 273) predominant ambient temperature during monitoring period. MW molecular weight of the specific chlorinated hydrocarbon, L liters of air sampled. RESULTS AND DISCUSSION The area and personnel time-weighed 8-hour average monitoring data indi cated acceptable levels well below the established threshold limit values. More emphasis on excursion monitoring is be recommended to better define problem areas and to insure that we are employing proper protective equip ment. The data also would serve to encourage the proper use of the protec tive equipment. DO 010904 CONFIDENTIAL. CHLORINATED ORGANICS PER 50 ppm Mac McCraine N/D Huey White .338 John Diaz .257 Rusty Carpenter .107 Mike Didier .083 Craig Landry .112 TET 5 ppm PDC 75 ppm N/D N/D .218 .122 N/D N/D .302 N/D N/D N/D N/D N/D B-T 10 ppm N/D N/D N/D N/D N/D N/D EDC 10 ppm N/D N/D N/D N/D .073 N/D 2-3 1 PPP_ Comments N/D 8 hours Warehouse office area N/D 8 hours D-8C area N/D 8 hours Sampleman N/D 8 hours Sampleman N/D 8 hours Maintenance by acid system N/D 8 hours Sampleman Areas Washing Machine .065 .012 N/D N/D N/D N/D 8 hours Boot Rack .113 .073 N/D N/D N/D N/D 8 hours C5B BTMS Pump 3.02 .674 N/D N/D N/D N/D 8 hours D-67C .572 .220 N/D N/D N/D N/D 8 hours T-4A&B . 161 .052 N/D N/D N/D N/D 8 hours D-15 .461 .103 N/D N/D N/D N/D 8 hours D-13 .364 .072 N/D N/D N/D N/D 8 hours N/D = Not Detected Data results reported in ppm(v) DO 010905 CONFIDENTIAL HEXACHLORINATED ORGANICS SURVEY 1984 CHLORINATED SOLVENTS PLANT 00 010906 CONFTDtTNTTAl INTRODUCTION During 1984, area and personnel samples were collected for hexachlorinated organics-in-air. Eleven different areas and six operators were monitored with special emphasis being placed on the sampleman job. Two hex wipe sampling surveys were conducted during the year. The first survey was conducted to compare results with surveys prepared during the previous two years and to determine if there was a con tinued favorable trend. The second survey was centered on five loca tions (four in the lunchroom and one in the red tag office). Three sets of samples were collected during a one-month period. The purpose of the survey was to see how consistent the results were, to gauge housekeeping and to determine if this area was a significant route of entry for personnel exposures. ANALYTICAL PARAMETERS A Varian, Model 4600, gas chromotograph equipped with a N^ 63 electron capture detector was used for the analyses. Chromatographic con ditions were as follows: Column: 30 meters, 1 micron film, 0.32 millimeter DB-5 Capillary Column Temperatures: Oven: Detector: Injector: 120C (5 minutes) programmed at 25/min to 195C 300C 200 C Carrier Gas: Helium Make up Gas: Nitrogen Injection Sample: 1 microliter MONITORING PROCEDURE SP-1 personal sampler pumps were worn by the employees while per forming their normal duties. A 4" x 0.25" glass tube, prepacked with Poropak QS chromatographic column packing was attached to the end of a 2' length of Tygon tubing connected to the sample pump inlet. The tube assembly was attached to the employee's lapel as close as possible to the the person's breathing zone. SAMPLE PREPARATION Samples were desorbed by placing the Poropak packing into 10 ml of hexane and shaking periodically for one hour. Analysis was then per formed by electron capture detector gas chromatography. The resulting peaks were measured via integrator computer. (Equipment is calibrated on a daily basis. ) DO 010907 CONFTDETNTIAl -2- CALCULATIONS ppb(v) = ne x 2H. *t5 x 1000 L X MW X RR Where: ug = microgram from integrator data 24. H5 = liters occupied by 1 mole of gas at standard conditions L s liters of air sampled MW = molecular weight of component RR = recovery rate of component RESULTS AND DISCUSSION Overall, the area and personnel hex-in-air monitoring results were satisfactory and indicated acceptable levels (see Table 1). The hex area monitoring around the per tet reactor during the pre-heat procedure indicated the highest potential exposure levels. The 16.5 ppb(v) HCBD level recorded approaches the threshold limit value of 20 ppb(v). The hex storage tanks monitoring results were in the 3 to 5 ppb(v) range for HCE and 0.9 to 1. it ppb(v) for HCBD. The chlorine stripper column bottoms registered 2.6 ppb(v) HCE while the heavies feed eva porator indicated 1.5 ppb(v) HCE. The remaining hex-in-air area monitoring results were all below 1 ppb(v). The personnel sampling indicated that all monitoring results were well below the established threshold limit values (see Table 2). Comparison of the hex wipe sampling data collected over the last three years revealed a favorable trend. Levels have been decreasing each year. The highest level recorded in 1984 was 320 nanograms per wipe which compares very favorably to 4340 nanograms per wipe in 1982 (see Table 3). The follow-up hex wipe sampling survey, in which five locations were monitored, indicated very low levels with one exception. One monitored microwave oven averaged 150 nanograms per wipe for three samples. This was discussed with supervision and corrective action was taken (see Table *1). 0 010908 conftoPNT ' TABLE 1 HEXES 19814 TLV 10 ppm HCE TLV 20 ppb HCBD BLV* 150 ppb (Blood) HCBZ Area Washing Machine Boot Rack C5B Bottoms D-67 -C T-4A&B D-15 D-13 R-1C North South East West 0.220 0.460 2.600 1.480 0.715 3.414 4.650 3.000 104.000 4.000 11.000 0.081 0.170 0.718 0. 116 0.091 0.940 1.370 0.088 16.500 0.098 0.119 0.153 0.200 0.443 0.242 0.316 0.380 0. 130 0.081 5.516 0.090 0.109 Comments 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours Samples collected during reactor preheat TABLE 2 HEXES 198H Personnel Huey White John Diaz Rusty Carpenter Mike Didier Craig Landry "Mac" McCraine TLV 10 ppm HCE 1.115 1.200 0.760 0.560 0.990 0.027 TLV 20 ppb HCBD BLV* 150 ppb (Blood) HCBZ 0.875 0.585 0.515 0.106 N/D 0. 310 0.082 0.016 N/D 0.885 N/D 0. 195 Comments 8 hours 8 hours 8 hours 8 hours 8 hours 8 hours Working in DC-8 Area Sampleman Sampleman Performaing maintenance on HC1 system Sampleman Material Controller Data results reported in ppb(v) DO 010909 OONFTDENTTAl TABLE 3 LOUISIANA DIVISION WIPE SAMPLING RESULTS FOR CHLORINATED HEXES CHLORINATED SOLVENTS PLANT LOCATION Bench top in work clothes side locker room 1982 HCBZ NG/WIPE 22 Floor near boot puller-boot rack 2960 Bench top on street clothes side locker room 183 Floor just inside street clothes side outside door 207 Inside refrigerator - bottom door shelf 280 Ledge inside drawer for sugar/spoons (lunchroom) Floor in doorway from CR/offices to lunchroom 133 4276 Lunchroom table top (at 12:30 P.M. ) 70 Microwave handle 134 Top of conduit on wall behind coffee counter Blank 356 BLD EDO Desk Top 211 Top of decwriter in control room 229 Drinking fountain in control room (where left hand would rest) 1470 Intercom handle in center of control room Counter where mail is sorted (by Xerox) 87 BLD Floor inside front door to offices 4340 C.R. Lab- keys on the 2621 4 the calculator Back hood in C.R. lab - front of ledge 173 851 Chair seat edge in control room 2840 P/T intercom handle at roadway intersection east of the shop 1390 Inside microwave 1983 HCBZ NG/WIPE 295 334 98 BLD 282 N/D 127 N/D 144 300 N/D 97 BLD BLD N/D N/D 742 107 BLD N/D 195 382 1984 HCBZ NG/WIPE BLD 120 BLD N/D 260 N/D 320 N/D BLD 110 N/D N/D 90 BLD N/D N/D 100 BLD N/D N/D N/D 90 no 010910 CONFTDFNTTAl TABLE HEX WIPE SAMPLES (HCBZ) NANOGRAMS/WIPE Blank N.D Microwave North BLD 100 Removed Microwave South 120 170 160 Red Tag Office 100 BLD BLD Table Top South BLD BLD BLD Table Top North BLD BLD BLD DO 010911 CONE TDENTIAl INDUSTRIAL HYGIENE MEETING OCTOBER 16, 1983 JOHN DIAZ RALPH AMAR SIDNEY HEARNS CRAIG LANDRY RALPH BUTLER W.T. LANDRY JOE DOUCETTE INDUSTRIAL HYGIENE MEETING OCTOBER 17, 1983 MICHAEL BROWN CLIFF THIBODEAUX JESSE THERIOT CLAYTON DUCK ERNEST LEE SIDNEY CARRIERE DARRELL LAFLEUR BUTCH PRESTONBACK RANDY LANDRY INDUSTRIAL HYGIENE MEETING OCTOBER 18, 1983 HARRY J. WASHINGTON ALTON L. ANDERSON JR. GARY MAY GLEN RACHAL JEFF L. CARPENTER RUSTY L. CARPENTER JERRY JACKSON RICKEY VAUGHN 00 03 0912 CONFIDENTIAL INDUSTRIAL HYGIENE MEETING OCTOBER 19, 1983 CHIP BROWN KENNETH HALL HUEY YOUNG DONALD ZERINGUE JAMES GODEAUX JOHN MATHIS INDUSTRIAL HYGIENE MEETING OCTOBER 19, 1983 ARTHUR JACKSON ELMER BOURGEOIS, JR. BOBBY ARNOLD JOHNEY MCQUARTER DAVE MIHALIK JOHN G. THIBODEAUX CARNEAL G. DONATTO /? V /Vffi dctxtf, I9&J /- .- o DO 010914 CONFIDFNTTAL Odt* U. i 1 ^ 0. ^4^rVu fi. C'-^T) f. ^ /p ZT/( -- Hy ^ e#vc /ft-iX flky OcJ. / ? ( i<j$j iCiHfcz- S, i W CJkyZ&i D __ jA^-^V^bk Cs&A/1/JLa. 1Jfe >o bQfrjp- ?'*ls *NTr*,i `ip,#! Ooh (,|W H y jizt**- DO 010916 CONFTDFNTTAl.