Document e1ewaB5GXJDwKQxQ9byrXEVL4

LOUISIANA DIVISION INDUSTRIAL HYGIENE REPORT AN OPERATING UNIT OF THE DOW CHEMICAL COMPANY DEPARTMENT ETHANOLAMINES/GLYCOL ethers FILE NUMBER LAD-EAP-92.01 date 12/10/92 TITLE EVALUATION OF EMPLOYEE'S EXPOSURE TO DOWANOL*PM SERIES, DOWANOL*EB SERIES. ETHANOLAMINES SERIES, NOISE AND ASSOCIATED INDUSTRIAL HYGIENE ACTIVITIES AT THE LOUISIANA DIVISION ETHANOLAMINES/GLYCOL ETHERS PLANT, PLAQUEMINE, LOUISIANA DURING 1990 AND 1991. SUMMARY: During 1990 and 1991, personal time-weighted average(TWA) sampling, excursion short term sampling, and area type sampling were conducted in the Ettaanolamines/ Glycol Ethers plant, The monitoring was carried Out to evaluate exposures to Dowanol*PM, Dowanol*EB, N-Butanol, Monoethanolamincs(MEA), Diethanolamines(DEA), and Triethanolamines(TEA). An area Noise survey of sound levels throughout the block was made. The results of personal type monitoring for exposures to Dowanol*PM during various routine and non-routine tasks ranged from None Detected(N.D.)(0.14-0.56ppm) to 3.0 parts per million(ppm). Area type sampling, for airborne levels of the same material ranged from the Limit of Quantitation(L.O.Q.)(<0.12ppra) to 190 ppm. The 190 ppm result was a 40 minute sample obtained during open dome loading of a tank car with the sampling device located near the dome. The 8-Hr TWA exposure guideline for DowanoI*PM is 100 ppm. Personal type monitoring results for exposures to Dowanol*EB were all N.D.(0.14 to 0.69 ppm). Area type sampling results for airborne levels of Dowano)*EB ranged from N.D. (O.lOppra) to 4.2 ppm. The 8-HR TWA exposure for DowanoI*EB is 25 ppm. (Continued on page 2) DISTRIBUTION LOUISIANA DIVISION *L. Adcock, 2306 *A. Royals, 3502 W Dr. G. Kusch, 2303 *A. Sandow, 3701 *K, Hasenbeck, 2306 E. Bourgeois,5501 * Cover Sheet Only T.Grant, 5501 *T. Austin,3701 B. Heinze, 3502 W *T. Bradley,3701 *B. Abadie, 5501 *G. Meier,3502 W RESTRICTED FOR USE 1 MIDLAND S. Dombrowski, 1803 *A. Pollock, 2030 PRODUCED FOR THE ASBESTOS C WITHIN DOW DATE: MASTER No. at&st, &/ HO 0739E1 oonftdfnttai LOUISIANA DIVISION INDUSTRIAL HYGIENE REPORT AN OPERATION UNIT OF THE DOW CHEMICAL COMPANY SUMMARY: continued Potential employee exposure during a 25 minute task of collecting quality control samples from a barge of N-Butanol was 8.0ppm. This is a potential exposure because a half face organic vapor acid gas(OVAO) respirator was worn. The exposure guideline for N-Butanol is a 50 ppm ceiling limit. Employees' exposures to Monethanolamine(MEA) ranged from N.D. (0.01 ppm) to 231 ppm. The 231 ppm MEA sample, taken during a 29 minute period while loading a MBA tank car, most likely involved liquid contact with the sample tube in order to obtain such a high reading. The same tank car loading job that yielded the high MEA result also showed 16ppm Diethanolamines(DEA) and 28 ppm Triethanolamines(TEA) readings which should not have been present in high purity MEA. The validity of the sample is questionable. A re-test of the same job over 480 minutes resulted in none detected amounts for all compounds. A half face respirator with OVAG cartridges was worn during loading. The 8Hr TLV-TWA for MEA and DEA is 3 ppm. No exposure limit has been established for TEA. An area noise survey of the Ethanolamines/ Glycol Ethers plant was conducted in 1991. Noise level readings ranged from 68 dBA to 102 dBA, Those areas with noise levels above 90 dBA require the use of hearing protectors. The use of high noise generating tools ( e.g. impact wrenches) also require the use of hearing protectors. The laboratory fume hoods were evaluated in 1991 for face velocities. Both hoods were rated class B on the stipulation that the sashes be operated at 18 inch openings. Block 55 personnel training for 1990 and 1991 included Hazcom, respiratory protection, a review of MSDS's, hazardous materials loading/ unloading, and block asphyxiants. In 1991, the annual survey of Asbestos material in the block was completed. Procedures with the condition and/ or labeling were noted along with the necessary follow-up. Replacement of Asbestos material with non- Asbestos where feasible continued to be the practice. The reports containing the Glycol Ethers monitoring results are located in the Environmental Services lab. The book number is 0217 and the results are located on pages 20,21,24,49,100, and 112. The samples were analyzed and results reported by Louise AJroo, Lorinda Edwards, and J. Chustz. The reports containing the Ethanolamines monitoring results arc located in the R&D analytical laboratory, Bldg. 2503. The samples were analyzed by David Smith and reviewed by Steve Caldwell. The book number and pages are: book-5341 pages- 22,23,28,29 book-5254 pages-6,7,8 book-5684 page-4 folder-9102.049 RESTRICTED FOR USE WITHIN DOW 2 D0 0733F? CONFTDFNTTAL PURPOSE As part of a continuous effort to provide a healthful and safe environment for personnel of the Etbanolamines/Glycol Ethers plant, a program to evaluate employees exposure to Dowanol PM, Dowanol EB, N-Butanol, Monocthanolamine, Diethanolamine, Triethanolamine and noise was conducted in 1990 and 1991. This report addresses the work performed including recommendations for 1992, CONCLUSIONS 1.Dowanol PM: In 1990 and 1991 pergonal and area type sampling were conducted to determine airborne concentrations of Dowanol PM during various job tasks and plant operations. The results for the personal type samples ranged from NJD. (0.14 ppm) to 3 ppm. The area sampling results ranged from L.O.Q. (<0.l2 ppm) to 190 ppm. The 190 ppm area sample was taken while a Dowanol PM tank car was being loaded with the sampling device setting in the dome area. A personal type sample of the very same operation, a Dowanol PM tank car loading, resulted in a reading of L.O.Q. (<0.90 ppm). The ACGIH eight hour TLV-TWA for Dowanol PM is 100 ppm. 2.Dowanol EB: In 1990, personal and area type monitoring were conducted to determine airborne concentrations of Dowanol EB during various job tasks and plant operations. The results for the personal type samples were all none detected ranging from 0.14 ppm to 0.69 ppm. The area type sampling resulted in readings ranging from N.D, (0.10 ppm) to 4.2 ppm. The ACGIH 8- hour TLV-TWA for Dowanol EB is 25 ppm. A personal type sample was taken during the sampling of a N-Butanol barge. The result for this sample was 8 ppm. The OSHA permissible exposure limit for Butanol is a ceiling value of 50 ppm. 3. Ethanolamines: RESTRICTED FOR USE WITHIN DOW 3 DO 0739F-3 CONFIDENT TAl In 1990 and 1991, personal and area type sampling was conducted to determine airborne concentrations of monoethanolamine (MEA), Diethanolamine (DEA), and Triethanolamine (TEA) during various job tasks and process operations. The personal type sampling results for MEA, DEA, and TEA ranged from N.D. (0.01 ppm) to 231. ppm, from N.D. to 16 ppm, and from N.D. to 28 ppm, respectively. The high results for all three compounds were obtained from a sample taken during the loading of an monoethanolamine tank car. The validity of this sample is questionable since the high purity MEA produced contains no TEA, and the MEA and DEA levels reported are high compared to previous results, and to reach 231 ppm MEA in a 29 minute sample would almost certainly require liquid contact. A personal 8* hour TWA type sample of this same job produced none detected (N.D.) results for al! three compounds. Two excursion type area samples were collected in 1990 during the loading of MEA tank cars. The location of the pumps and tubes for each sampling were selected to provide "worse case" downwind, in close proximity to the open dome data. The airborne levels of MEA for these two samples were 25 ppm and 7.3 ppm. These results were significantly less than the 231 ppm personal sample taken in 1991. 4. Noise: In 1991, an area noise survey was completed. Results of that survey showed that the high noise level areas in the block are the drumming line (95-105 dB(A)), due to noise of short term duration associated with the operation of an impact wrench. The tank car loading rack (97 dB(A)) during the use of an impact wrench, and the C-550 compressor area (98 dB(A)), The high noise areas were posted with warning signs. Drumming line and tank car rack procedures were changed reflecting the higher noise readings. Operators are required to wear hearing protection while using impact wrenches. 5. The laboratory fume hoods were surveyed in 1991 for face velocity measurements and smoke capturing performance. Both hoods, the north and the south, met the requirements of a "B" classification with restricted sash openings of 18". 6. During 1990 and 1991, personnel received training on respiratory protection, hazardous chemical loading/unloading and Hazcom. "" 7.During 1991, the annual asbestos maintenance program was conducted. All asbestos in the block was examined for damage and proper labeling. Problem areas were documented and repairs were made by trained asbestos abatement personnel. Where possible, nonasbestos material was substituted for asbestos during maintenance related activities. RESTRICTED FOR USE WITHIN DOW 4 DO 073954 CONFTDFNTTAl RECOMMENDATIONS 1. Do task sampling during the loading of Ethanolamines tank cars. The sampling pump should be worn for the length of time it takes to load the car. 2. Monitor for EO exposure during maintenance activity using the E.O. Trak sampling badges. 3. With the intention of setting a TEA exposure limit of 10 ppm, monitoring for airborne levels should be conducted during the amines plant turnaround. 4. Conduct annual area noise survey to document noise levels in block 55. EVALUATION CRITERIA Industrial Hygiene monitoring is performed to determine actual and potential exposure levels both as daily time- weighted averages(TWA) and peak or short-term excursion exposures. The results of personal monitoring are compared with recommended exposure guidelines for a health work environment. The guidelines used are at least as stringent, and in many cases are more stringent, than the Occupational Safety and Health Administration(OSHA) Permissible Exposure Level(PEL's). The guidelines are developed using toxicology, epidemiology, and industrial experience, they represent airborne concentrations of substances to which nearly all employees may be repeatedly exposed throughout a working lifetime without adverse effects. The exposure guidelines for the chemical and physical agents monitored in 1990/1991 at the Ethanolamines/ Glycol Ethers Plant are outlined below, Physical Agent Noi$e(5) EXPOSURE GUIDELINES (1) .... TWA 85dB (2) (3) STEL SOURCE 90dB Ceiling Dow/OSHA (4) T.I.M.E. Dow Reeistrv Ref DR-8000-1032 Chemical Agent Dowanol* PM Dowanol* EB Monoethanolamines Diethanolamines Triethanolamines N-Butanol TWA ..STEL 10QPPM 150PPM 25PPM 3PPM 6PPM 3PPM NJE. 50PPM Ceiling SOURCE ACG1H ACGIH ACGIH ACGIH ACGIH Dow Reeistrv Ref DR-0005-1945 DR-0000-0599 DR-0000-6406 DR-0000-6417 DR-0103-1012 DR-0002-3972 RESTRICTED FOR USE WITHIN DOW 5 00 073955 OONPTDFNTTAI EXPOSURE GUIDELINES: continued (1) TWA- 8 Hour Time Weighted Average (2) STEL- Short Term Exposure Guidelines (3) Source* Dow Industrial Hygiene Guidelines (3) ACGIH- American Conference of Government Industrial Hygienists (4) TIME* A Dow internal hazard data system in which information sheets are Obtained covering Toxicology, Industrial Hygiene, Medical and Environmental elements. NOISE The current Dow exposure guideline for noise is a 90 dB(A) ceiling. In addition, the Hearing Conservation Amendment document (29CFR 1910.95) issued by OSHA states that the 8-hour TWA noise exposures should not exceed 90 decibels as measured on the Ascale [dB(A)] of a sound pressure level meter at the slow response setting. Dow Louisiana Division expresses the guidelines as an 8-hour TWA of 85 dB(A), A TWA exposure of 85 dB(A) or more requires participation in a hearing conservation program. Areas that exceed the 90 dB(A) ceiling are posted with signs and mandatory hearing protection is required. For simplification, a 100% dose is the maximum allowable dose for the workday regardless if it is an 8 or 12* hour shift. TOXICOLOGICAL INFORMATION Toxicological data on the chemical and physical agents monitored at the Ethanolamines/ Glycol Ethers plant in 1990/1991 are available on the T.LM.E. system. NOISE SAMPLING AND ANALYTICAL METHODS Area noise level measurements were checked during 1990 and 1991 using B&K model 2205 sound level meter. The sound meter was checked for calibration using a B&K model 4230 Calibrator. This meter was checked before and after use. AIRBORNE CHEMICALS Dowanol PM vapors were collected on Silica Gel tubes while being worn in the employees breathing zone. Air was drawn using portable battery operated pumps, capable of pumping at a flow rate of 50-200 ML/MIN. The pumps were set to the desired flow before each excursion using a bubble meter. They were also checked after use to calculate the average flow rate during the test, Area sampling and short term excursions required a different flow volume. This necessitated the use of a pump capable of flow rates up to 1000 ML/MIN. The pumps were checked using the same bubble meter, before and after use. RESTRICTED FOR USE WITHIN DOW 6 DO 073956 OONFTDFNTTAl Dowanol EB and N-Butanol vapors were tested using the same technique as Dowanol PM. Short term as well as extended excursions were tested. The same pumps, tubes, and procedures were used for these samples as were used for Dowanol PM samples. These samples, Dowanol PM as well as Dowanol EB and N-Butanol, were put in envelopes and brought to the Environmental Services Lab for final analysis, these samples were accompanied by a blank to verify accuracy of test procedures. The results of these tests were processed and sent back with documentation to block 55. Ethanolamines samples are taken in much the same way with a few exceptions. The tubes that are use are manufactured in the block 55 lab. This Method used for the sampling of block personnel requires that the tubes contain Activated Alumina. This is done by cutting tubes and inserting the alumina into the tube and plugging it with wool. The flow is then checked before use and again after use. The same flow rates are used for Ethanolamines testing as is for Glycol Ethers. The tubes are brought to R&D for final analysis and the results are relayed back to the plant. A blank tube also accompanies this sample. These results are passed on to block 55 personnel for their review. ANALYTICAL REPORT The reports containing the Glycol Ethers monitoring results are located in the Environmental Services lab. The book number is 0217 and the results are located on pages 20,21,24,49.100, and 112. The samples were analyzed and results reported by Louise Almo, Lorinda Edwards, and J. Chustz. The repons containing the Ethanolamines monitoring results are located in the R&D analytical laboratory. Bldg. 2503. The samples were analyzed by David Smith and reviewed by Steve Caldwell. The book number and pages are; book-5341 pages- 22,23,28,29 book-5254 pages-6,7,8 book-5684 page-4 folder-9102.049 VENTILATION Laboratory hoods were assessed using smoke tubes and an Alnot Model 8525 Thermo Anemometer air velocity meter to determine capture performance and hood face velocities. RESTRICTED FOR USE WITHIN DOW 7 DO 073957 OONFTDFNTTAL RESULTS AND DISCUSSION Personal and area monitoring were conducted during both routine and non routine work situations. The sample collection periods ranged from short term tasks (e.g. 15 minutes) to full shift, time-weighted average type samples. The results of personal and area monitoring for airborne levels of Dowanol PM are shown in Table 1. The tasks being performed by personnel during personal monitoring exercises included collecting process samples, draining process equipment during product changeover, loading tank trucks and tank cars, and drumming product. The sampling results for these activities ranged from none detected (N.D.) to 3-0 ppm. The 3.0 ppm sample was taken over an 8-hour period during the filling of Dowanol PM drums. The area monitoring was conducted to determine airborne concentrations near the packaging line during drum filling operations, and in the dome area of tank trucks and tank cars during product loading. The listed Dowanol PM concentrations for this series of area samples ranged from the Limit of Quantitation (L.O.Q.) of <0.12 ppm to 190 ppm. The 190 ppm Dowanol PM sample was collected near an open tank car dome during loading activities. Over the period of time required to fill this rank car, the loading operator was monitored to determine his exposure level. The result of this $0 minute, personal type sample was L.O.Q (<0.90 ppm). The significantly lower operator monitoring result was attributed to the fact that the loader does not spend much time in the tank car dome area, and the close downwind location of the area sampling device. The ACGIH 8-hour TLV-TWA exposure guideline for Dowanol PM is 100 ppm. Table 2 shows the results of personal and area sampling for Dowanol EB and Butanol. The monitoring activity took place during several product turnarounds, drum filling work, routing outside rounds, and tank truck/tank car loading. All Dowanol EB personal and area monitoring results were N.D. except for one 60 minute area sample of 4.2 ppm that was collected while loading a tank truck. The ACGIH 8-hour TLV-TWA exposure guideline for Dowanol EB is 25 ppm. A 25 minute task which involved sampling a N-Butanol barge was monitored. The analysis for this sample showed a potential exposure level of 8 ppm. This represents a potential exposure as personnel performing the sampling task were required to wear a half-face organic vapor acid gas respirator. The OSHA permissible exposure limit for N-Butanol is a 50 ppm ceiling value. Table 3 shows the results of personal and area sampling conducted to determine airborne concentrations of Monoethanolamine(MEA), DiethanoIamine(DEA), and Trithanolaraine (TEA) during various job tasks and process operations. The personal type sampling results for MEA, DEA, and TEA ranged from N.D. (0.01 ppm) to 231 ppm, from N.D, to 16 ppm, and from N.D. to 28 ppm, respectively. The high results for atl three compounds were obtained from the same sample taken during the loading of a monoethanolamine tank car on 2/27/91. The validity of this sample is questionable Since the high purity MEA produced contains no TEA, and the MEA and DEA levels reported are high compared to previous results. To reach 231 ppm MEA in a 29 minute sample would almost certainly require liquid contact. A personal 8- hour TWA sample also taken while loading a MEA tank car on 6/19/91 showed none detected (N.D.) results for all three compounds. Half face OVAG respirators were worn while operators were on the tank cars. RESTRICTED FOR USE WITHIN DOW 8 RESULTS ANDJDJSniSSION: continued Two excursion type area samples were collected in 1990 during the loading of MEA tank cars. The location of the pumps and tubes for each sampling were selected to provide "worse case" downwind, in close proximity to the open dome. The air borne levels of MEA for these two samples were 2$ ppm and 7.3 ppm. These results were Significantly less than the 231 ppm personal sample taken in 1991. A full shift(8 hour) personal sample was collected during MEA drumming operations. The result of this sampling was concentration in air of MEA at 3.8 ppm. This occured with the local exhaust ventilation system not in use. A following personal monitoring exercise of the same task with the pump worn by the same individual resulted in a N.D, (None Detected) reading. The results are shown on table 3. An area noise survey was conducted in 1991 to document historical sound levels in the Ethanolamines/Clycol Ethers plant. The process area noise level readings ranged from 77 dB(A) to 98 dB(A). The 98 dB(A) reading was taken in the area of C-550 A and B. The C350 area is a mandatory hearing protection area since noise levels exceed 90 dB(A). The other high readings were encountered at the tank car loading rack (102 dB(A)) and at the drum filling station (97 dB(A)). Both measurements were made during the operation of an impact wrench which caused the high readings. The wearing of hearing protectors are required in both of these situations. Included in this report are the results of the I.H. Departments 1991 survey of the Q.C. lab' s two fume hoods, following gome hood housekeeping and maintenance work, the north hood received a "B" rating and the south hood a "B". RESTRICTED FOR USE WITHIN DOW 9 DO 070909 cnfjDfnt XAL TABLE: 1 Results of Employees' Time-Weighted Average(TWA) Exposure and Area Monitoring Simulating Breathing Zone Height for Airborne Concentrations of Dowanol*PM at the Louisiana Division Ethanolamines/Glycol Ethers Plant, Plaquemine, Louisiana, During 1990 and 1991 MASTER NO. JOB ASSTNG. PERSONAL SAMPLES: 432925 SOS 432045 SOS 240436 OST 433370 SOS 435-94-3142 Contract 435-94-3142 Contract 432925 SOS 432302 SOS 432925 SOS 095295 OS DATE 02/08/91 12/12/90 10/03/90 05/24/90 05/21/90 04/11/90 04/10/90 04/11/90 03/08/90 01/19/90 TIMEfMIN.l CONCENTRATION-immfvM 540 NJD. (0.23) 450 0.43 , 420 Ni>. (0.25) 390 NJD. (0.56) 480 3.0 450 2.3 630 0.35 390 0.07 80 LOQ (<0.90) 600 N.D. (0.14) AREA SAMPLES: 10584 10586 10081 Drumming Area T/T Loading Area T/C Loading Area 12/05/90 10/03/90 05/04/90 300 420 40 7.7 N.D. (0.25) 190 10006 T/T Loading Area 03/13/90 60 LOQ {<0.12) 10082 T/C Loading Area 03/08/90 80 31 Industrial Hygiene Exposure Guideline ACGIH TLV 8 Hr. TWA (1) Half face OVAG resporator worn during this task. 100 LOQ- Detectable amount but below the analytical limit of quantitation for the survey sampling conditions. ND- None detected with the analytical limit of quantitation noted in parenthesis. RESTRICTED FOR USE WITHIN DOW 10 <r COMMENTS Routine Rounds Glycol Ether Drainout Loading T/Ts Glycol Ethers Drainout Drumming DowanoPPM Drumming Dowanol*PM Glycol Ethers Drainout DowanoPEB Startup Loading DowanoPPM Tankcar Routine Sample Rounds Drumming DowartoPPM Loading T/Ts Sampling Device Setting In T/C Dome Area(l) Sampling Device Setting In T/T Dome Area(l) Sampling Device Setting On T/C During Purging and Loading no 073960 CONFIDENT I oonf 1 TABLE: 2 Results of Employees' Time-Weighted Average(TWA) Exposure and Area Monitoring Simulating Breathing Zone Height for Airborne Concentrations of Dowanot*EB and N-Butanol at the Louisiana Division Eihanolainineg/Giycol Ethers Plant, Plaquemine, Louisiana, During 1990 and 1991 MASTER NO. JOB ASSING. PERSONAL SAMPLES: 096074 432302 OS SOS 433370 SOS 435-94-3142 Contract 435-94-3142 Contract 432925 432925 SOS SOS 095295 OS DATE 06/36/90 05/24/90 05/24/90 05/21/90 04/11/90 04/10/90 03/08/90 01/19/90 HMEfMIN.) CQNCENTRATIQN.PDinfvM DOWANOL*EB N-BUTANOL 25 390 ND. (0.42) 390 ND. <0.56) 480 ND. (0.35) 450 ND. (0.37) 630 ND. (0.26) 80 ND. (0.69) 600 N.D. (0.14) 8.0 AREA SAMPLES: 05/04/90 03/13/90 03/08/90 40 60 80 N.D.(0.13) 4.2 N.D.{0.10) r* X) Ore' ,Uz.. f- c c c c COMMENTS N-Butanol Barge SamplingO) Glycol Ethers Swapover Glycol Ethers Swapover Drumming Dowanol*PM Dramming DowanoI*PM Glycol Ether Swapover Loading Dowanol'PM T/Cs( 1) Routine Outside Rounds T/C Loading(l) T/T Loading Loading Dowanol*PM T/Cs(l) Industrial Hygiene Exposure Guideline ACGIH TLV 8 Hr. TWA 25 (1) Half face OVAG respirators worn during this task ND- None detected with the analytical limit of quantitation noted in parenthesis. RESTRICTED FOR USE WITHIN DOW 11 50 Ceiling DO 0 7 3 9 6 ? C O N F ID E N T TA TABLE: 3 Results of Employees' Time-Weighted Ave/age(TWA) Exposure and Area Monitoring Simulating Breathing Zone Height for Airborne Concentrations of Ethanolamines at the Louisiana Division EthanoLamines/Glycol Ethers Plant, Plaquemine, Louisiana, During 1990 and 1991 CONCENTRATIQN.immfvM MASTER NO. JOB ASSIGN. DATE TIMEfMIN.) MEA DKA TEA PERSONAL SAMPLES 436-21-3474 434283 242215 095295 436-21-3474 Contract OS OS SOT Contract 08/01/91 06/19791 02/27/91 02/18791 02/01/91 450 480 29 420 480 N.D. N.D. (0.02) 231 N.D. (0.01) 5.8 N.D. N.D. 16 N.D. N.D. 28 96074 OS 01/11790 15 N.D. (0.44) 434283 OS 12/12/90 510 NT). (0.02) AREA SAMPLES 05/04/90 02/03/90 35 40 25 7.3 COMMENTS Drumming T/C LoadingO) T/CLoading(I) Drumming Drumming Sampling Amines Feed Filter Drumming Loading T7C{1) Loading T/C(l) Industrial Hygiene Exposure Guideline ACGIH TLV 8 Hr. TWA ACG1H TLV STEL 3 3 N.E. 6 N.E.- None Established (1) Half face OVAG respirator worn during this task. ND- None detected with the analytical Emit of quantitation noted in parenthesis. RESTRICTED FOR USE WITHIN DOW 12 TABLE 4: Area noise level survey readingl ar the Ethanolamines/ Glycol Ethers Plant, Louisiana Division, Plaquemine, La. conducted in 1991. AREAdBA Reading MCC 72 CONTROL ROOM 64 COMPUTER ROOM 72 MAINTENANCE SHOP 70 AREA 1: T-130 79 DV-115 80 P-104 77 R-101 79 AREA 2: DV-273B 79 E-215 77 R-201 78 P-201 86 CT-500 86 C-550 A/B 98 DV-5U 85 AREA 3 68 DRUMMING BUILDING:DRUM BUNG WRENCH 102 REGULAR DRUMMING 75 TOW MOTOR 80 IMPACT WRENCH ON TANK CAR RACK 97 CALIBRATION RECORD FOR NOISE SURVEY SOUND LEVEL METER: B&K MODEL TYPE 2205 SERIAL #395509 CALIBRATED WITH: B&K CALIBRATOR MODEL TYPE 4230 SERIAL #396558 CALIBRATION RECORD: BEFORE- 94 dBA AFTER- 94 dBA RESTRICTED FOR USE WITHIN DOW 13 DO 073^3 CONFIDENT I Al BLDG Id t* / ci/U^t*m'^m *} J/w~. Ml NOISE FIGURE I AUDIT T^vvtfl ^ frying Itf/UroL <?1 Qfo / D V^\ V!V t i i)6 fijo $*-jj DO 073964 OONFIDFNTTAL RESTRICTED FOR USE WITHIN DOW PAGE 14 NOISE AUDIT FIGURE DO 0 7 3 9 6 5 C O N F ID H N T T A l mi RESTRICTED FOR DSE WITHIN DOW PAGE 16 CLOMP R M , M il NOISE a u d it lab . ... . * i 7?X)lb 1*Q(b MCC MAI NT. iBLDG. no D& b'Wfa RESTRICTED FOR USE WITHIN DOW DO 0 7 3 9 6 7 CONFTDFNTTA FIGURE 5 LOUISIANA DIVISION tNIHJSTRlAI. HYGIENE HOOD PERFORMANCE TESTING TiiTi PLANT: Ethanolanunes/Glyeoi Ethers Building 5501 DATE November 25.1991 HOOD I D.: Ub Hood/North TESTED BY: Darlene Creel Static Pressure Reading Hood Face Velocity Readings at a(n) I 83 _______________ 79 69 42 58 62 Saab Opening. I 991 711 781 1 Smoke Tube Observations With a(n) 282 Sash Opening - POOR (Air capture by hood is weak and/or uot well defined. Turbulence inside the hood and smoke obaerved escaping hood toe.) (FPM) (FPM) pBiignirinn--------------- Sash Hnnrt OpMirtr gvFYm_______ qaasififarion Lab Hood/Nonh 28* 71 42 " INADEQUATE Used the Alnor Model 8925 Thermo Anemometer. FV * Average Face Velocity FVm * Minimum Measurement FPM * Feet Per Minute RESTRICTED FOR USE WITHIN DOW 18 DO 07396& CONFIDENTIAL FIGURE 6 LOUISIANA DIVISION industrial bvc.ifnp Boon performance^ Tfsttnc ntTA PLANT: EtiunoIamines/GIycoi Ethers Building5501 DATE November's, 1991 HOOD I.D.: Lab Hood/North TESTED BY: Darlene Creel Static Pressure Reading LSI Hood Face Velocity Readings at a(n) lfiH Sash Opening. I 129 130 ua I I 126 90 115 1 1 122 90 103 I Smoke Tube Observations With a(n) 111 Sash Opening - "GOOD (Air capture by hood is strong and well defined with minimal internal turbulence, and no observable smoke swirling back to hood face when person stands at hood face.) rV*ijjTumn*i Lab Hood/North (FPM) FV 18" 113 Used the Alnor Model 8925 Thermo Anemometer. FV a Average Pace Velocity FVm 3 Minimum Measurement FPM Feet Per Minute (FPM) FVm 90 B* RESTRICTED FOR OSE WITHIN DOW 19 0739^ DO C.ONp FIGURE LOUISIANA DIVISION INDUSTRIAL HYGIFNF flOnn PFRFQPMANCE JTESTING T\ltk PLANT: Ethanoiamwes/Glycol Ethers Building 5501 DATE* November 25.1991 HOOD I.D.; Lab Hood/South TESTED BY: Daiiene Creel Static Pressure Reading LL Hood Face Velocity Readings at a(n) JJBu. Sash Opening. I 94 90 1001 1 1 79 74 69! I ) 64 52 5*5 1 Smoke Tube Observations With a(n) tel Opening - ***POOR (Air capture by hood is weak and/or not well defined. Turbulence inside the hood and smoke observed escaping hood face.) (FPM) (FPM) Dgngnation--------------- S--h Wrmri OpMiiiy pv________ _pym_________ Lab Hood/Sooth 18* 75 S2 " INADEQUATE Used the Alnor Model 8925 Thenoo Anemometer. FV a Avenge Face Velocity FVm s Minunum Measurement FPM a Feet Per Minute * RESTRICTED FOR USE WITHIN DOW 20 DO 073970 00IMFIDFNTTA1 FIGURE 8 LOUISIANA DIVISION INDUSTRIAL,.HYGIENE HAnn PERFORMANCE TESTING DATA PLANT: Ethanofamines/Olycol Ethers Building 5501 DATE December 2, 1991 HOOD I.D.: Lab Hood/South TESTED BY: Darlene Creel Static Pressure Reading Lfffl Hood Face Velocity Readings at a(n) !&!!. Sash Opening. 131 135 1491 121 111 1231 99 97 981 Smoke Tube Observations With a(n) Sash Opening - ****GOOD (Air capture by hood is strong and well defined with minimal internal turbulence, and no observable smoke swirling back to hood face when person stands at hood face.) Designalinn (PPM) 5v>*>i Hond Opening FV (PPM) FVm (7l5Lifir*irirvn Lab Hood/Sooth 18* 118 97 B* Used the Aloof Model 8925 Thermo Anemometer. FV = Average Face Velocity FVm s Minimum Measurement PPM = Feet Per Minute RESTRICTED FOR DSE WITHIN DOW 21 DO 073971 OONFTDFNT TA