Document zoDYayZn3rjOKXgBk4yR22Q5a

MANUFACTURING CHEMISTS ASSOCIATION 1825 CONNECTICUT AVENUE, N.W, WASHINGTON, D.C. 20009 (202) 483-6126 CHEMICALS RESEARCH May 2, 1974 - .374 To: MANAGEMENT CONTACTS OF COMPANIES SUPPORTING THE VINYL CHLORIDE RESEARCH PROGRAM TECHNICAL TASK GROUP ON VINYL CHLORIDE RESEARCH Subject: NIOSH Request for Proposal for Study of Vinyl Chloride Exposures Gentlemen: Enclosed herewith are the Statement of Work and Scope of Work sections of a request for proposal (No. CDC-99-OSH-128(4)) issued by NIOSH last March 28, and just now called to my at tention. This material is being distributed for your in formation, so that you may be prepared to handle contractor visits should they select one or more of your plants for study. Sincerely, KDJ :mb Attachment cc : Mr. A. W. Barnes D. P. Duffield, M.D. Dr. Tiziano Garlanda Technical Task Group on Vinyl Chloride Research VVC 000006268 Copied by MCA. '5/2/74 STATF.'^'TT OF WORK A. Background and Purno:;n Information recently has been made available to the National Institute for Occupational Safety and Health (NIOSH) that indicates a serious ;.<* c 1 c:: praM:..-: potentially exists in workers involved with the po! ye'.nrinat ten of vinyl chloride to polyvinyl chloride and polyvir.pl chloride copolymers. Preliminary mortality information concerning one vinyl chloride polymerization plant has revealed there is a definite excess of deaths due to angiosarcoma of the liver in workers that have been involved with this processing. It has been reported by Imperial Chemical Industries of Great Britain that angiosarcomas of the liver develop in animals exposed to vinyl chloride. Since vinyl chloride is definitely present in the environs of the plant mentioned above, vinyl chloride has been postulated to be an etiologic agent in the above mentioned excess employee deaths. Since there is a large work force involved with vinyl chloride poly merization processing, NIOSH immediately initiated an extensive epidemiological investigation (including environmental surveys) Into vinyl chloride polymerization operations and workers thereof. Vinyl chloride exposures, of course, also can occur in the produc tion of the monomer and may occur in the processing of the polyvinyl chloride and its copolymers and during the commercial and industrial use of these polymers. Because these polymers have widespread use and there is potential for quite a large number of persons to be exposed to vinyl chloride, in addition to those people working in polymerization operations, there is a need to document the extent of vinyl chloride exposures in operations other than polymerization processing. The purpose of this contract is to document past and present worker exposures to vinyl chloride during (1) the monomer production and the (2) processing of polyvinyl chloride and polyvinyl chloride copolymers. In addition to documenting worker exposures, to vinyl chloride, information on work practics, environmental control pro cedures, indus trial hygiene practices and worker exposures to other known liver toxins also will be documented. These data will be utilized to ascertain the extent of worker exposures to vinyl chloride and possibly other liver toxins so that the possible health effects impact in the industry can be determined and appropriate priorities for corrective measures, if needed, can be set. If vinyl chloride exposures are considered to be significant in these areas, then a very critical look at possible .general exposures will be made. Enclosure 1 VVC 000006269 B. Scope of Work 1. The Contractor shall furnish the necessary personnel, material, services, f acilili cs, and otherwise clo all tilings necessary for or incident: to ti:.- rtorr.nncc of work set forth herein. Speci fically, the Contractor shall perform the following: Task. I. Vinyl Chloride Monomer Production x There are 15 plants in the United States that produce vinyle chloride monomer according to 'Ih's;: information (Attachment A). From these 15 plants, and any other plants that the contractor identifies, three plants shall ho selected for on-site environmental/industrial hygienao surveys, TJi.:hin 90 days of the initiation of the contract, the con tractor shall present to the project officer (s) the list of vinyl chloride mor.nmar plants and polymer processing plants that have been choosen for the environmental/industrial hygiene surveys. This pre sentation 11 include the basis for the selection. The actual surveys shall notcor.rr.once until this information has been reviewed and approved by the project officer (s). Mrximun review time shall be five working days. The criteria for selection shall include, but not be limited to: (1) information gained from preliminary site visits; (2) information gained from literature searches; (3) information gained from personal contacts; (4) the representativeness of the plants to industrywide operations; (5) the plants having the greatest potential for work ex posure to \4inyl chloride; (6) the plants having the greatest gradient of worker exposures to vinyl chloride; (7) the availability of historical inplant, air measurements of vinyl chloride; and ITBT*the plants having the longest history of vinyl chloride monomer production. The surveys at the selected three plants shall consist of documenting past and present worker exposures to vinyl chloride and past and present. work practices, environmental control procedures and industrial hygiene practices that involve the reduction of worker exposures to vinyl chloride. At a minimum, the following specific information shall be`obtained and/or constructed: (1) a general description of the vinyl chloride monomer pro cessing operation: (2) S-hour daily time-weighted average exposures (TV.'As) of vinyl chloride for each different job-type/job-operation in the monomer processing area, including a specific job description for each of the job-types; (3) general .iron (stationary) samples of vinyl chloride in areas of suspected high concentrations; (4) raw material and product lists and quantities therof that relate to the past and present vinyl chloride levels; (5) ventilation design and ventilation measurements, including documentation of dates of ventilation changes and the extent of changes and how they relate to past and present vinyl chloride levels; (6) documentation of past and present environmental control procedures and work practices that have been instituted to leverrvinyl chloride levels and how they relate to past and present vinyl chloride levels; (7) photo graphs, sketches,, etc. to document existing conditions; and (H) documen tation of past and present industrial hygiene practices, including utili zation of protective clothing (i.e. type, frequency of change, laundering practice.*?, etc.), protective devices (i.e., respirator-usage, frequency type, etc.) hoo "! erpis. pi icticea, shower requirements, eating, smoking and drinking ;;: n r t. i r 1 : in ;> re .htc t lop arnas, etc. vve 000006270 r Task n. Processing of Polyvinyl Chloride and Polyvinyl Chloride Copolymnms_ Environmontnl/industrial hygiene surveys shall be conducted in pro duction a r-'. s ,.! :->r" ml^vinvl chloride and polyvinyl chloride c o polymers* are processed including, but not limited to, the following operations: (1) compounding: (2) extrusion; (3) molding; (4) calenderir:. (5) thermoforming; (6) binding; (7) foams; (8) fibers; and (9) plastisol processing. The surveys shall be conducted so that each processing operation is sanoled at throe different plants (locations). The criteria for the selection of these three plants shall include, but net be limited to: (1) information nained from preliminary site visits; (2) information gained from literature searches; (3) information gained from personal contacts; (4) representativeness of the operations to industryv/id0 processing; (5) operations having greatest potential for workc-'exposures to vinyl chloride; (6) operations having the .greatest gradient of worker exposures to vinyl chloride; (7) availability of historical inplant air measurements of vinyl chloride; and (8) the operations having the longest history of polymer processing. The information that shall bo obtained and/or constructed shall be the same as the eight items listed above for thevinyl chloride monomer production operations. In addition, to these eight items past and present Th'A worker exposures to other known liver -toxins (if present) inducing, but. not limited to, mercury, 2,2 dichlorovinyl dimethyl phosphate, ozone, dioxane, beryllium, lead, direthylnitrosamine, arsenic, (amyl, methyl, ethyl, butyl, prool and vinyl) acetata, cccccr, trichloroethylene, carbontetrachloride, arsine and tetrahydrofuran shall be measured and/or constructed. Task III. Sample Collection and Data Analyses All vinyl chloride sampling and analytical techniques shall be specified in the contract proposal. If sampling is required for other known liver toxins, the sampling and analytical procedures must be approved by the project officer(s) prior to use by the contractor. The contractor should be cognizant of the fact that vinyl chloride is considered a potential human liver carcinogen and all employees and agent: of the contractor should be provided with appropriate protective equipmer* These equipment needs will be discussed with the project officer(s) prior to the field surveys. * The sample collection shall be conducted in such a manner as to provide statistically valid data that are representative of present worker ex posures (catoaorized by different job-types) to vinyl chloride and other liver toxins, if found. Past worker exposures (by job-type) shall be constructed based on tbe information that is collected on the changes ir processing, ventilation, environmental control, work practices and indus1. rial hygiene practices that have occurred over the years and on histories * Polyvinyl chloridc-acetatc, polyvinyl chloride-propylene and polyvinyl chloride vinylidene chloride < i VVC 000006271 it n A rrW -a irn tt'T i air sampling data (preferably personal samplinn data) collected in the plant, if deemed reliable and accurate. All assumptions -L t are made in arriving at the constructed concentre Li c:is sha 11 b-_- "re sented. All of the above information on processing chances, ventilatic changes, etc. shall be presented as part of the report on the surveys.. VVC 000006272