Document EvgmaaJyXakd2LK4640Y2wMoL

j Iou %oooo Rtv. is?* to E. E. Tackett AT Carrollton, Ohio DATE July 11, 1975 from A. L. Gaudreau at New Haven. Conn sueject Vinyl Chloride Monomer in Air Olln Plant - Carrollton, Ohio copy to Mac Roy Gasque, M.D. E. J, Burton R. Henderson R. Y. LeVine G. Locke R. L. O'Connell, M.D B. Stevens, R.N. Sampling for vinyl chloride monomer in air in the blending opera tions (substantially a duplication of the testing performed on April 16 and 17, 1975) was conducted on June 11, 1975, after re medial actions to correct above permissable exposure to employees were completed. The efforts of plant management were distinctive in the results and show excellent diligence and ability in coping with a poten tially disheartening and costly program. The results and recommendations of sampling are contained in this report. Recommendations 1. This area can now qualify as a non-regulated area. 2. Compliance with the vinyl chloride standard 29CFR 1910.93(q) now requires actions as listed under paragraphs d(3)> h, j, 1(3), 1(4), m, n(2), and h(3) only, with the method employed for moni toring in accordance with (d)(4). (See report dated April 7, 1975, for standard and sampling information.) 3. The cloth sleeve to the mixer from the additive hopper should be changed to an impervious type material. 4. The sleeve from the mixer to the cooler should be repaired. Results The results and locations of samples collected on charcoal with Sipin (personal samples) and Monitaire (area samples) pumps according to NIOSH recommendations follow: OLX 4330 /HY FILE THIS COPYt IF YOU MUST RETAIN IT. SPEC1FIY A DEFINITE RETENTION PERIOD: ONE YEAR, OTHER E. E. Tackett -2- Vinyl Chloride Monomer in Air Olln Plant - Carrollton, Ohio July 11, 1975 Location Vinyl Chloride Monomer Concentration Compounding - Blending Room 1st shift employee at hood breathing zone 1st shift employee at hood breathing zone (9^02 compound) 1st shift employee at floor scale 1st shift employee at floor scale (9h02 compound) 2nd shift employee at hood 2nd shift employee at floor scale Area sample megzanine 2nd shift (9^02 compound) Area sample megzanine 2nd shift Area sample top of high speed mixer Area sample top of cooler near flex line from mixer Area sample top of surge hopper Area sample at smali additive hopper Area sample no operations (6/9/75) (Mr. Burton's sample) none detected <0.09 ppm <0.07 ppm <0.10 ppm <0.07 ppm none detected <0.0^ ppm <0.0^ ppm *1.17 ppm *0.^10 ppm < 0.06, <0.07 none detected Pipe Cutting 1st shift employee breathing zone none detected OLX 4331 E. E. Tackett -3- Vinyl Chloride Monomer in Air Olin Plant - Carrollton, Ohio July 11, 1975 Location Vinyl Chloride Monomer Concentration Pipe Blending 1st shift employee breathing zone none detected *No employee exposure The symbol C indicates the presence of the vinyl chloride monomer but below quantifiable range of the method of analyses. Numbers derived from lowest detectable quantity .001 divided by volume of sample. Analyses of samples was by a gas chromatographic method in accord ance with recommended practice. The permissible exposure limit as defined in Occupational Safety and Health Standard 29CFR 1910.93(Q)(c)(1) and (2) is 1 ppm vinyl chloride gas averaged over any 8 hour period with no exposure greater than 5 ppm averaged over any period not exceeding 15 minutes. Discussion With the installation of a new vacuum bulk hopper, redirection of air return ducting to the out of doors, improvement in ventilation and the use of solid flexible lines the concentration of vinyl chloride monomer has been reduced to almost insignificant amounts. One more connection must be made, however, even though a vacuum is on the system, there is periodic excursion of dust and gas therein into the area of the mixer. This is the additive hopper connection on top of the mixer. Two additional operations, pipe cutting, which showed a possible potential health problem through previous testing (possibly an unexplained aberration), and a pipe blending showed no detectable vinyl chloride monomer associated with them. Housekeeping is vastly improved. OLI 4332 E. E. Tackett Vinyl Chloride Monomer in Air Olin Plant - Carrollton, Ohio July 11, 1975 Conclusion Thoughtful action with diligence has brought a potential health hazard under control and removed the stigma of having to maintain a regulated area as required by present occupational safety and health regulations. If I can be of further help, please contact me. ALG:sin Adrian L. Gaudreau OLI 4333