Document 7ROVvoBDJQZ5qLK0O9peJ7MZa
INDUSTRIAL HYGIENE REPORT
GULF COAST INDUSTRIAL HYGIENE CENTER TEXAS OPERATIONS
AN OPERATINC UNIT OF THE DOW CHEMICAL COMPANY
RfiVlgWgD
File Number: OC5-4961C2 Date Issued: March 28,1995 Plant Code: 58275
Title
Authors) Reviewers)
Baseline Monitoring Results For Ethylene Dichloride and Vinyl Chloride, Oyster
Creek Unit V-Vinyl Chloride Plant, January - March 1995. Texas Operations,
Freeport, Texas
/ /Cf)
C. J. Anderson (J fy*4fU0gJ-PO. F. McDonald ^ ^7.
J
Introduction
Personal baseline air monitoring was conducted for ethyleiveTfichloride (EDQ and
vinyl chloride for the process technician job classifications at Oyster Creek Unit VVinyl Chloride plant, OC-500. Job class averages during start-up activities ranged from ND(0.06 ppm)* to 0.13 ppm, EDC and ND(0.09 ppm) to 1.0 ppm, vinyl chloride.
Discussion
Full-shift monitoring was conducted for each of the five process technician job classifications: 1) Ecology, 2) Lab, 3) Oxychlorination, 4) Vinyl Distillation, and 5) Vinyl Furnace process technicians.
Results and Conclusions
All monitoring results were within exposure guidelines and action limits with the exception of one full-shift sample taken for the lab technician (1.8 ppm, vinyl chloride) while spiking butadiene into gaseous vinyl chloride standards. This procedure is non-routine and not expected to be repeated. The lab technician average during routine activities was 0.13 ppm.
Tables 1 and 2 contain the monitoring results. The full-shift monitoring (Table 1) was representative of the full-shift exposures. Short-term monitoring (Table 2) was representative of the exposures during the tasks monitored. No respiratory protection was required by procedure or worn during any of the monitoring. There were 28 full-shift and 7 excursion samples collected.
Full-shift monitoring results for ethylene dichloride ranged from ND(0.Q3 ppm) to 0.07 ppm. The job classification averages ranged from ND(0.04 ppm) to 0.06 ppm, well within the exposure guideline of 1 ppm.
Excursion monitoring results for ethylene dichloride ranged from ND(0.13 ppm) to 0.25 ppm, well within the short term exposure limit (STEL) of 2 ppm.
Full-shift monitoring results for vinyl chloride ranged from ND(0.04 ppm) to 1.8 ppm. The job classification averages ranged from NIX0.06 ppm) to 0.55 ppm, well within the exposure guideline of 1 ppm.
Excursion monitoring results for vinyl chloride ranged from ND(0.20 ppm) to 0.65 ppm, well within the STEL of 5 ppm.
Recommendations 1) Review routine vinyl chloride handling procedures conducted in the lab for potential exposures.
2) Review laboratory techniques for the lab personnel.
Communication Communicate results of this survey to all affected personnel and forward documentation to Industrial Hygiene, B-101.
Sampling and
The personal air monitoring sampling train for vinyl chloride and ethylene
Analytical Method dichloride was a 1-gram charcoal tube, with a pump operated at approximately 50
ml/min for the full-shift monitoring and approximately 200 ml/min for the short
term monitoring. Pumps were calibrated before and after use. Sample tubes were
labeled and delivered to the Texas Operations Industrial Hygiene Laboratory for
analyses. The samples were eluted with carbon disulfide and analyzed by gas
chromatography with a flame ionization detector (GC-FID).
'None Detected at the analytical detection limit indicated in parentheses
Restricted for use within the Dow Chemical Company
DO 1 3BA03 CONFTDFNTlAt
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CONCENTRATION, ppm (W.)
SaoiiIi Mob Nuobtf Mnnber
DtH
SopHni Vote. Mod dim)
ECOLOGY PROCESS TECHNICIAN - lZHowahlft
13631 306667 1/36/95 7:30 - 17J5 135
13639
99659
Vf/95 6-40.17:16 M2
13652 13651
JW4J4 WSJ
V9-10M 11:10 * SJO 3m/n 6:44 17J1
JTJ M2
13666 306667 3/a-wn 19:25 .5:45 552
13669
99659 3/1*245 11:14.5:45 402
ETHYLENE DICHLORIDEVINYL CHLORIDE
Vapfad TWA
Full-hlft TWA **
Si^htrt TWA
Pufl-3hlft TWA**
WDTO.M1 NDWOSI NTX0G5) NDfO-03) WDCQ/J3)
0/M
NDraosi NTX0.051 Ntraosi NDratm NIX0.C3I
0/M
NDn.im NDfO.09) ND<0JDK) KD/0.05) NW0.0*) NtXO.04)
Nwo.ro Ncraoti NDraon Ktxao> NDfQ.041 ND/CUM)
LAB TECHNICIAN - l-Horr ihlfl
AVERAGE ND(R*Q
ND(.N>
13637 13W7 13663 13664
99574 99576 145250 99574
1/36*5 3/9/95 VS/95 VS/95
7:20 15:10 720.15:14 7:23 -15:50 7:45 -15JO
262 26.7
293 25.7
NDT0 09) NDfO,(77) KDrO.031 NOtO.O*)
NDfftOO NDtO.1771 NtX0,(M) NDca04)__ 1
0.16 133 0/39 0.11
O.I 131 030 0,10
average
oxychlorination process technician - ij-hTM. on*
13619
93699 1/24/95 7:25 - 1736 353
KDfO.06)
13640
93665
2/7/95 6:45.17:29 34J
ND/0.06)
13653 249*95 2/9-1043 18:19 >5:50 36.6
WDro.an
13657 306802 2/2145 6:44-17:40 333
NDfO.CD)
13665
93691 2/23-2445 1:2S -J:J0 274
NTX0 03)
13671
H1057 Vl-I/SJ 11:19-5:45 383
005
nd(.m>
NDfO.OS) ND/0,05) NDfO.051 ND/0,0J> NDfO.03)
0/M
HZX0JD9) NTY0W) NDT0.09) ND/0.05) KtXO-O*') KtX0.04)
ms
VtXO.09) NDfO.09) NDr&an NW0.O*) NIX0.04) NDrO.04)
AVESAGB ND(R*d)
MS
VINYL DISTILLATION PROCESS TECHNICIAN-ILHout IMS
13630 13643 13646
UdJd 13667 13670
249469 138834 246754 249*62 249469 9S221
U54/95 7:25 -1737 2/7-845 18:19.5JO
6:37 - 17:47 2/2145 6:44.17:40 2/23-2445 18:25 -5JO 3/1-245 18:15-5:45
353 37.7 38 0 56.3 353 343
NDrC.06) NDT0.05) STDCO 051 NtXO.GB) rnro.oo)
0.05
NDraoii NTXO.OJ) NDfO.OS) Nixo.cm mo oj)
003
030 0.12 0.11 0/77 NDrt).04) ND/0.05)
035 0.12
0.11 0/M NDTOL04) NTX004)
AVERAGE ND(lM)
us
VINYL FURNACE PROCESS TECHNICIAN- 12-Hmr .hiA
13635 13636 13642 13645 13660 13661 13672
95956 *9959 90509 97416 9859 SOSJJ 95956
1/54-IS*S 18:30-6:00 WfitM 6:40 -17:09 3ti+n3 11:23. 7 V//95 6:37 -17:47
2/21-22/95 18J3 *5:48 2/ZJ/93 6J5.17:45 3/1-W5 18:23 .5:45
410 34,7
363 37J 33 i 363
mo.os)
_NDTO.Otf)
NOfO.Q5) 0.07 0.09 0.05
NDfO.051
.NDraosi
Nixaos\ 0.07 o/n
0/M
NIX0.081
.NW0.09)
0.15 NTX0.04)
019 NWO.fM)
Ktto.cm NDfO.09)
. 0.14 Nnrao*) 0.17 NWO.OO
AVERAGE
9.96
9.99
Gaauoeof (Ttskj Ow than routine dtffcs)
Worted a Throx Heat Uctoe *orfc on D412/Wash do*n area Qanced vaJve In V. D. area/ Pulled nice
l/nff l/&tlv Gel, <cd^yLo/iae rack/ Made v<nv{ suit. MaloL on vinyl tnalrtre/Madt vinyl atdtTiolkinc butadiene (^iiebi freaj vent ample* A ren Is Wt> 1 Rea vtsvi/EDC ftd*. A iamole*4tia ftCl aide.
Replaeod catket on #300 fteamltne Mom Nh TM11/T-1IVD-114/T- 14GUMUactofi ftmoved yiNw from Ecelorv Detu area
Qiected on EDC leak Nw Cleared P-261B Non Nn Cleared mntrr/QMflfed PSV
Kan Worked Cd burners PvRO failed
Werbd m EDC pvere purodeared V-2
Dumped EDC
fuf* ts lab
OCCUPATIONAL EXPOSURE LIMIT * OSHA PEL
FuSAIll TWA
1 ppm
I ppm
None [Mrctirl ax th. MalyXiaJ AaIacSoa Unit IsIIcaIaA 1a pirtmhmm.
"Full-Shift Eitr.pol.doa AAautnlnf IM apoiur* Ur dm. pat monitord
DO 178404 OONFTDFNTTAl
PAGE 2
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CONCENTRATION. ya- fW.)
ETHYLENE BICHLORIDE
Smpbd
TASK
TWA
TWA
VINYL CHLORIDE
TifilU
task
TWA
twa
NDra.m NttO.33)
___ NDta.1T) NDtajT)
MW271 MX0J2)
NW13J) NDKLS21
Ntra.29) KDfO.19) NO(0.36) mo. 13)
0.25
Nora 29) KD(ai9) ND(0.24) mai3)
0*23
NDC0A6) NIX0J0) NDC0A11
nckojoi
045
NtYO.461 NttOJO) mxa*n NDra.20)
045
AVERAGE
R23
14
Vinyl Rr. Tadi Cm 13634) run mmlei Bealorr Tcfc Cm 13439) mutt umokn Vinyl Dki Tut Cm 13644) muMAttl tattiplM Vhnfl Wit T*Cb Cm 136*4) atutttArui samplu
0*y T*eb C*m 13657) euuttAin uaplt* Vinyl Pi. Tedi Cm 13661) no isopln
occupational exposure umit
OSHA PEL
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00 1 ?R40S
C0NFT0FNTTAI
PAGES
File Number OC1-49S1C2
Plant Code: 58274
Distribution List
D.L Albert, B-101 C. K. Browdy, B-101 L J. Burmeier, B-101 D. R. Correll, OC-501 S. L. Dombrowski, 1803 Midland J. L Mapes, OC-1120 M. Marchant, Louisiana M. McClintock, B-101 E. Trantham, B-101 R. Tweedle, OC-501 K. D. West, OC-1120 *W. M. Wood, OC-501 Texas Compliance File, B-101
`Person responsible for the communications and recommendations follow-up.
Restricted for use within the Dow Chemical Company
Page 4
00 1 0840b
CONFTOFNT TAl