Document Qgkqe1dDbq4gmmz1qVO4ojpoL

INDUSTRIES To: Z. G. Bell INTER-OFFICE CORRESPONDENCE Date: June 15, 1978 From: P. J. Snyder Location: 10 West Subject: Lake Charles VDCM Exposure Monitorii Program A recent review of Lake Charles Vinylidene Chloride personnel monitoring data collected and on file since July 1, 1976, is attached for your information. To date, in excess of 280 exposure measurements have been made on approxi mately 24 individual job categories. Based on information available to me, this represents approximately 100 employees. The information being developed by Lake Charles continues to highlight a few specific job categories as potential problem areas. These occupational groups are: ' 1. EDC Operator 7 of 21 TWA samples exceed 1.0 ppm (33%) 3 of 21 exceed 2.5 ppm (14%) 2. MC Operator 14 of 23 TWA samples exceed 1.0 ppm (61%) 8 of 23 exceed 2.5 ppm (35%) 3. MC Aux. Operator 22 of 25 TWA samples exceed 1.0 ppm (88%) 19 of 25 exceed 2.5 ppm (76%) Other job categories with potential exposure in excess of 1.0 ppm (TWA) include 4. MC Lead Operator 5. P/T Still Operator 6. Loader 7. Loader Helper 8. Lab Analyst A similar review made in March 1977 highlighted the same three job categories listed above (EDC, MC, and MC Aux. Operator) as having the greatest relative exposure potential. Additional exposure data continues to be collected to better ascertain YDCM exposure potential on other occupational groups in cluding loaders. A minimal amount of data has been collected on affected con tractor personnel. FORM 503-A REV 0-1.70 SL 073617 Z. G. Bell June 15, 1978 Page 2 I have discussed the anticipated NIOSH recommended standard of o.1 ppm (TWA) with Lake Charles personnel (P. Trew and B. Brown). Their lab people will be looking at the analytical sensitivity of the method in use. Based on the exposure data available, PPG will encounter a significanc problem in reducing exposure levels to the proposed level of 0.1 ppm (TWA). The use of respiratory protection will have to be expanded beyond that re quired for 2.5 ppm. The ultimate effectiveness of the P-746, P-S71 en gineering project in reducing employee o-.posures to below 1 ppm cannot be ascertained at this time. As suggested in your memo of 6-5-78, I will be visiting Lake Charles in the near future to review the status of the VDC workpractice. If you have any additional questions on the above information, please let me know. i tea Attachments cc: P. S. Trew F. C. Dehn P. J. Snyder SL 073618 ..t** Uk INDUSTRIES To: P. J. Snyder INTER-OFFICE CORRESPONDENCE Date: June 5, 1978 From: Z. G. Bell, Jr. Location: 10 West Subject: Correspondence Requiring Immediate Attention I would appreciate it if you would go through my incoming mail and tend to those items which have a deadline before I get back to the office. We may hear more on VDCM. You will be able to contact me on any emer gency situations. Please check into the new drumming operation at Lake Charles (telephone them). We want to be sure that they take more air samples for VDCM to. determine potential exposures. I recall that cartridge respirators (Comfo) tested at Barberton for VDCM breakthrough did not give much protection, and when these were reused, there was a significant stripping action of VDCM from the charcoal. Have L. Kuryla recheck these cartridges for an initial breakthrough of 0.1 ppm. What is the status of the VDCM workpractices implementation at lake Charles? 1 would suggest you visit Lake Charles soon to check the VDCM operation. /zak cc: F. C. Dehn I. C. Klimas -- I understand Natrium stopped drumming VDCM, is that correct? H. C. Twiehaus FORM HEV 0.1.70 SL 073619 VINYL I DENE CHLORIDE MONITORING DATA Department: EDC-MC Job Category EDC Operator* MC Operator* MC Aux. Operator* MC Lead Operator* No. Measurements 8 Hr. 15 Min. TWA INVSTG. STEL 21 3 24 1 5 25 3 10 7- 3 No. TWA Me as. > 2.5 ppm 3 8 19 1 Maximum Reading 9.7 45.5 18.5 9.7 TWA TWA TWA TWA Department: EC-VCM-HCL Lead Operator EC-HCL Operator Furnace Operator Process Operator 1_ 15 3 - 21 1 -23 1 0 - 11 TWA 0 .42 INVESTG. 0 .36 TWA 0 .33 TWA Department: OHC-TETRA-W.T.U. OHC Aux. Operator OHC Operator Machinist 8 7 -- * 1 tm _ -_ "" 0 .34 TWA 0 .03 TWA 0 ND Department: Per/Tri P/T Lead Operator 31 -- P/T Rx. Operator 82 -- P/T Still Operator* 10 - -- P/T Aux. Operator 14 8 -- Pipefitter 2 --- Shift Repair -- 1 -- We 1 de r 1-- -- General Worker 3~ " "- 0 .27 TWA 0 .90 INVESTG. 1 3.7 TWA 1 2.6 INVESTG. 0 .95 TWA 0 .11 INVESTG. 0 .10 INVESTG. 1 161. INVESTG. Department: Shippinq Loader* Loader Helper* 11 10 3 2 2 2 1 7.0 TWA 3 24.9 TWA Department: Technical/Lab Lab Assoc. Lab Sr. Analyst Lab Analyst* 11 2 - -_ 7"-- 0 ND 0 .05 TWA 0 1.5 TVIA * Job Categories with exposure potential > 1.0 ppm TWA SL 073620 INDUSTRIES To: Z. G. Bell INTER-OFFICE CORRESPONDENCE Date: June 15, 1978 From: P. J. Snyder Location: 10 West Subject: Lake Charles VDCM Exposure Monitoring Program A recent review of Lake Charles Vinylidene Chloride personnel monitoring data collected and on file since July 1, 1976, is attached for your information. To date, in excess of 280 exposure measurements have been made on approxi mately 24 individual job categories. Based on information available to me, this represents approximately 100 employees. The information being developed by Lake Charles continues to highlight a few specific job categories as potential problem areas. These occupational groups are: 1. EDC Operator 7 of 21 TWA samples exceed 1.0 ppm (33%) 3 of 21 exceed 2.5 ppm (14%) 2. MC Operator 14 of 23 TWA samples exceed 1.0 ppm (61%) 8 of 23 exceed 2.5 ppm (35%) 3. MC Aux. Operator 22 of 25 TWA samples exceed 1.0 ppm (88%) 19 of 25 exceed 2.5 ppm (76%) Other job categories with potential exposure in excess of 1.0 ppm (TWA) include 4. MC Lead Operator 5. P/T Still Operator 6. Loader 7. Loader Helper 8. Lab Analyst A similar review made in March 1977 highlighted the same three job categories listed above (EDC, MC, and MC Aux. Operator) as having the greatest relative exposure potential. Additional exposure data continues to be collected to better ascertain VDCM exposure potential on other occupational groups in cluding loaders. A minimal amount of data has been collected on affected con tractor personnel. PORM REV 6*1 -70 SL ?362l Z. G. Bell June 15, 1978 Page 2 I have discussed the anticipated NI OSH recommended standard of 0.1 ppm (TWA) with Lake Charles personnel (P. Trew and B. Brown). Their lab people will be looking at the analytical sensitivity of the method in use. Based on the exposure data available, PPG will encounter a significant problem in reducing exposure levels to tne proposed level of 0.1 ppm (TWA). The use of respiratory protection will ha.e to be expanded beyond that re quired for 2.5 ppm. The ultimate effectiveness of the P-746, P-871 en gineering project in reducing employee eoosures to below 1 ppm cannot be ascertained at this time. As suggested in your memo of 6-5-78, I will be visiting Lake Charles in the near future to review the status of tne VDC workpractice. If you have any additional questions on the above information, please let me know. tea Attachments cc: P. S. Trew F. C. Dehn P. J. Snyder SL 073622 INDUSTRIES To: p. J. Snyder INTER-OFFICE CORRESPONDENCE Date: June 5, 1978 From.- Z. G. Bell, Jr. Location: 10 West Subject: Correspondence Requiring Immediate Attention I would appreciate it if you would go through my incoming mail and tend to those items which have a deadline before I get back to the office. We may hear more on VDCM. You will be able to contact me on any emer gency situations. Please check into the new drumming operation at Lake Charles (telephone them). We want to be sure that they take more air samples for VDCM to, determine potential exposures. I recall that cartridge respirators (Comfo) tested at Barberton for VDCM breakthrough did not give much protection, and when these were reused, there was a significant stripping action of VDCM from the charcoal. Have L. Kuryla recheck these cartridges for an initial breakthrough of 0.1 ppm. What is the status of the VDCM workpractices implementation at Lake Charles? I would suggest you visit Lake Charles soon to check the VDCM operation. /zak cc: F. C. Dehn I. C. Klimas -- I understand Natrium stopped drumming VDCM, is that correct? H. C. Twiehaus FOAM 403-A RCV 6-1.70 SL 073623 VINYLIDENE CHLORIDE MONITORING DATA Department: EDC-MC Job Category EDC Operator* MC Operator* MC Aux. Operator* MC Lead Operator* No. Measurements 8 Hr. 15 Min. TWA INVSTG. STEL 21 3 24 1 5 25 3 10 7" 3 No. TWA Meas. >2.5 ppm 3 8 19 1 Maximum Reading 9.7 45.5 18.5 9.7 TWA TWA TWA TWA Department: EC-VCM-HCL Lead Operator EC-HCL Operator Furnace Operator Process Operator 1 15 3 21 1 -- 23 1 -- 0 .11 TWA 0 .42 INVESTG. 0 .36 TWA 0 .33 TWA Department: OHC-TETRA-W.T.U. OHC Aux. Operator OHC Operator Machinist 8 7 "" - 1 -"- 0 .34 TWA 0 .03 TWA 0 ND Department: Per/Tri P/T Lead Operator 3 1 .- P/T Rx. Operator 82 -- P/T Still Operator* 10 - -- P/T Aux. Operator* 14 8 -- Pipefitter 2 - -- Shift Repair -- 1 -- We 1 de r -- 1 -- General Worker -- 3 -- Department: Shippinq Loader* Loader Helper* 11 10 3 2 2 2 0 .27 TWA 0 .90 INVESTG. 1 3.7 TWA 1 2.6 INVESTG. 0 .95 TWA 0 ` .11 INVESTG. 0 .10 INVESTG. 1 161. INVESTG. i 1 7.0 TWA 3 24.9 TWA Department: Technical/Lab Lab Assoc. Lab Sr. Analyst Lab Analyst* 11 2 - -7 0 ND 0 .05 TWA 0 1.5 TWA * Job Categories with exposure potenti al > 1.0 ppm TWA. SL 073624