Document 3NpdOg4kYMMkgedg2qnRKeEex

INDUSTRIAL HYGIENE 1984 JERRY E. STEWARD 00 f'ONFTOFNTTAI DOW CHEMICAL U.S.A. March 22, 1985 LOUISIANA DIVISION P. O. BOX ISO PLAQUEMINS. LOUISIANA 70765-0150 BOA 3*9-6000 J. D. Weldon 3801 xc: R. S. Touchet J. R. Norman B. Ledford C. Halphen Dr. Currier RE: INDUSTRIAL HYGIENE - 1984 LHC III had four incidents in 1984 in which the employees were monitored for potential exposure to benzene, compared to eleven in 1983. Of the four incidents, none of the spills resulted in significant personnel exposure. The exchange of catalyst in R-521 by VIP was also monitored. Only the people on top of the reactor were exposed to benzene and the levels were well below 10 ppm. Normal shift operations were monitored and were seen to have very low exposure levels. Enclosed are copies of the monitoring data, the yearly noise survey, the accomplishments for 1984, and the plans for 1985 Jerry E. Steward Sr. Envir. Chemist Light Hydrocarbon III jys AN OPERATING UNIT OF THE DOW CHEMICAL COMPANY THE ROLE OF INDUSTRIAL HYGIENE AT LHC #3 The nest important function for industrial hygiene is the protection ;f the workers. The first step ir. that protection is recognition of potential problems. At LHC #3 several problems areas are defined. The hazards of benzene and toluene are well doucmented. There are questions concerning the safety of exposure to butadiene, fuel oil, and dicyclopentadiene. LHC #3 has areas of high noise and there is a potential for heat stress in the furance areas. LHC #3 is designed to operate under a guideline of one part per million benzene on a time weighted average. The plant design greatly aids in keeping the exposure limits, however engineering is not the only means of achieving low exposures. LHC #3 has a continuing educational program to train personnel in the hazards and methods of handling the chemicals found in the block. A key part of the role of the industrial hygienist is to provide a data base of worker exposures. Easeline date is collected by monitoring normal day to day operations. Jobs that have a high probabiality of exposure are defined and monitored. At LHC #3, sampling, tarze leading, and pump repair are jobs that need specific job monitoring. Monitoring during a spill cleanup is considered as the worst case monitoring. 00 U>51?k C0NF T OFNT Tfl>i ACCOMPLISHMENTS LHC #3 19S4 Tank farm, LHC #3 operations and maintenance personnel were trained on the consequences of overexposusre to the block's hazardous chemicals. Hearing protection requirements and the monitoring program were also reviewed. Eighty five per cent of the employees received the training program. Personnel were monitored for exposure to benzene and toluene during the clean-up of spills. Ease line monitoring data was obtained by monitoring two operating shifts and a maintenance shift. A noise level survey of LHC #3 was taken. The noise levels were checked during the venting of the superheaters. The low pressure superheater exceeded the recommended levels. Capital has been requested to install larger mufflers on the unit. Levelcement work on the methods of analysis for butadiene and dicyclopentadiene was continued. CO/vp TFnTTai ( LHC *3 NOISE SURVEY DATE 9-16-83 12-20-84 Inside Control Room East of Control Room N.E. of Control Room Warehouse West V-1400A West T-1200 West T-1210 Eetween T-1200 and T-1210 D-531 Deck West E-531 Bz Reactor Deck Bz Reactors-around level North R-500F* North D-580 Fin Fan Deck Cooper Deck S.W. Cooling Tower w.W. Cooling Tower /uth Propylene Storage Spare Parts Yard S.E. Motor Control Center East C-55 S.E. C-54 S.E. C-150 S.E. C-52 South R-1A S.W. D-130 K-71 Ground Level K-71..Deck K-12CT Ground Level K-12Q Deck South E-9's East C-3 Deck with superheater vents HPSH venting LPSHr venting Furance wallwav West B-3 S.E. B-3 S.E. Bl-B - All noise levels are given in decibles 65 83 83 80 91 85 81 74 78 82 79 85 -- 87 88-96 90 86 ' 83 82 76 86 82 97 80 -- 77 92 96-112 99-103 96-108 98-104 96 102 91 -- -- 90-96 104 84 88 65 77 85 80 92 84 90 75 80 82 80-85 86 85 88 88-96 86-90 84 85 81 78 84 95 83 85 87 80 98 92-102 96-108 96-108 96-108 . 94 - 101 s. 92 100-108 114-120 88-96 102 88 90 DO 1 0 5 1 OB OONFTDFNTTAI 1. 02-09-84 2. 04-03-84 3. 05-15-84 4. 05-17-84 5. 05-22-84 6. 07-17-84 7. 10-08-84 8. 10-09-84 LHC #3 INDUSTRIAL HYGIENE SUMMARY OF MONITORING DATA Working around slab water pit after dumping an emulsion from C-20. Block 58 cleanup after P-1601C blew a seal. Easeline monitoring data - "B" shift days Baseline monitoring data - "D" shift dogs Baseline monitoring data - Day Maintence R-521 catalyst exchange Elock 58 sump cleanup Block 58 sump cleanup no 'lOFO?9 CONFTOFNTTAl FASTS FT?. MI11I '1C /. X *. uc \ SLAB 423SS2 SOT 433228 PTT AFTER DUMPING EMULSION FROM 3 7 < .01 <.01 <.01 < .01 3 7 <.01 < .01 <.01 < .01 2/9/84 SLEANUP AFTER P- 1601C BLEW A SEAL. 206866 0 3.5 .41 .52 .08 .20 .56 15 26 4/3/84 OT 1 .W. 280799 0 3.5 .72 .62 .05 .18 .54 1.0 6.0 4/3/84 f3 OT ' .E. 434294 0 1.3 .42 .48 .08 .12 < .01 6.0 7.0 4/3/84 ^0 OT , L.G. 433826 0 6.5 .68 .55 .15 < .01 .16 6.0 6.0 4/3/84 20 OT i. J. 278012 0 3.5 .79 .99 .06 .13 .81 20 51 4/3/84 i55 OT AUX . 433821 0 4.0 .31 .32 < .01 .03 .34 <5.0 6.0 4/3/84 029 OT A L.M. 474264 0 3.3 .25 .27 < .01 .10 .19 > *** 4/3/84 3318 OT **%t ~ DO 1 OS130 OONFTDFNTTA! NAME/S.S. MASTER CLASS PT TWA EQ (HR) PARTS PE?. KILL I OK TIME WEIGHTED AVERAGE BEN TOL ET _XYL. BEN STY 3" SHIFT MONITORING; DAYS ; MAY 15,1984 M. JENKINS 432042 0 10.0 0.05 0.04 <0.01 <0.01 0.02 43666927 S.S. R. GERMILLION 432049 0 10.0 0.06 0.03 <0.01 <0.01 <0.01 439749814 LEAD OS C. RICHARDSON 070952 0 10.5 0.01 0.05 <0.01 <0.01 <0.01 365620063 FUR OS C.L. HBOLEN 431043 0 10.7 <0.01 <0.01 <0.01 <0.01 <0.01 436565812 M. BROWNING OS 433343 0 11.0 <0.01 <0.01 <0.01 <0.01 <0.01 437067067 EOARD OS H. ALFORD, JR. 432677 0 11.0 0.01 0.01 <0.01 <0.01 <0.01 434882220 BOARD OS A.D. ABBOTT 433752 0 10.5 0.05 0.04 <0.01 <0.01 0.02 39909820 EEN SOT u.L. DAVIS 433820 0 10.5 0.01 0.02 <0.01 <0.01 0.05 436687843 C. RAYMOND FUR SOT 434177 0 11.0 0.01 0.01- <0.01 <0.01 <0.01 546889988 ETH SOT K. DIXON 433842 0 11.0 0.02 <0.01 <0.01 <0.01 <0.01 433942815 SOT S. DOTSON 434287 0 12.0 0.03 0.08 <0.01 0.02 <0.01 435139205 OT C.K. EAGLES 433893 .0 10.5 0.03 0.05 <0.01 <0.01 <0.01 43702^267 R.T. LOONEY EEN OT 276854 0 12.0 0.02 <0.01 <o.oi <0.01 <0.01 429156805 FUR OT R. STUFFLEBEAM 277485 W1 0 10.5 0.05 0.21 <0.01 <0.01 <0.01 448726049 OT no AO?'''3 rV:z: *3 A : (1) IH Monitoring of VIF 7:37 ONITCEING OF THE CATALYST EXCHANGE IN R-521 -essel setup cp.es: Name Ray Pourian E. J. Landry Jim Marino D. R. Kelly Joe Landry Randry Pitre Time F?M (TWA) Benzene Toluene Ethyl Ben Xylene Styrene 180 min 180 min 180 min 180 min 180 min 180 min 0.46 0.48 0.04 0.18 0.40 0.54 0.14 0.17 <0.01 0.30 0.13 0.24 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 0.11 <0.01 <0.01 <0.01 <0.01 <0.01 0.06 0.11 <0.01 <0.01 0.03 <0.01 DRUM LOADING CREW Randry Pitre E J. Landry Joe Landry B. R. Kelly Ray Pourian Pat Decote DOW PERSONNEL D. Wallace R. D. Sproles R. W.cLacombe J. R.:Bordenlon 480 min 480 min 430 min 480 min 430 min 480 min 0.17 0.13 0.12 0.17 0.10 <0.01 420 min 630 min 645 min 180 min 0.44 0.07 0.95 1.72 0-08 0.06 0.02 0.03 0.02 0.02 0.07 0.03 0.11 0.15 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 ' 0.01 <0.01 0.01 <0.01 <0.01 <0.01 0.18 0.02 0.06 0.02 0.02 0.08 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 <0.01 V 0.02 <0.01 0.01 <0.01 on Cr>Nn TonNy M/ I6-Feh-S5 ?:27 AM vMor.-; = r:eei (4) IK-ELOCK 58 SUMPS :i on x. .7:41 1n A IH MONITORING CLEAN-UP OF BLOCK 58 SUMPS Monitored 10/8/84 Block contract personnel Name Time Bull Buhler John Morris Oliver Talyor James Lewis Pat Decote A. Shultz 510 min 510 min 510 min 510 min 510 min 510 min Dow Personnel (fire watch) Mike Miller 510 min . M itored 10/9/84 Block contract personnel Pat Decote A. Shultz James Lewis Bull Buhler Oliver Talyor 420 min 420 min 420 min 420 min 420 min PFM (TWA) Benzene Toluene Ethyl BZ Xylene Styrene 0.23 0.08 0.05 0.10 0.11 0.08 0.03 1.90 0.16 2.85 0.36 0.07 <0.01 0.29 0.05 0.40 0.06 <0.01 <0.01 0.53 0.01 0.70 0.03 0.01 <0.01 0.23 0.05 0.30 0.05 0.02 0.14 0.06 0.02 <0.01 <0.01 0.05 0.06 0.73 0.06 0.77 0.10 0.14 7.85 0.59 8.13 <0.01 <0.01 0.43 0.03 0.40 <0.01 0.01 0.26 <0.01 0.31 <0.01 <0.01 0.08 0.03 0.09 no (~ONF lOF.*) tdfn-h --f-- -Tf*# , ~V' INDUSTRIAL HYGIENE PLANS FOR LHC #3 1. Continue to inform plant personnel on the consequence of exposure to chemicals in the block. Emphasis will be placed on benzene and butadiene. 2. Continue to monitor personnel for potential exposure to benzene and toluene when cleaning up spills. Obtain job specific monitoring date for sampling and pump repair. 3. Reduce employee exposure during sampling handling through the installation of new benzene sampling systems and through the purchase of a specific gravity meter. 4. Set up a monitoring program for butadiene and dicyclopentadiene. 5. Check the level of radioactivity at the propane and propylene pumps to test if Radon-222 is an- exposure problem in the block. 6. Run personal noise dosimeter tests and yearly noise survey. oo 10 'A C.o^