Document 0bdrzB9Q4Oe0p0p8Rbg016dn

In attendance Minutes Air Hygiene & -ianufacturing Camiiiittee Page -1- b~ Asbestos Textile Institute LU Oetober 3* 1968, Hotel Hershey,Hershey,Fa. t H.H. Valter, Chairman L.E. Moody H.M. Willingham R.C* Hunt L.C, Williams C.L. Sheckler V.C, Seeds R.B. Smith American Asbestos Textile Corp. H.E. Porter Company,Inc. Chiroyal, Inc. Raybe s to s -Manhattan, Inc Johns-Manville Corp. n n mu Raybestos-Manhattan, Inc. Absent: K.W. Kelson - American Smelting & Refining Co. Guests: R.M. Billings - Johns-Manville Corp. *L . Asbestos Health Seminar: The Seminar on October 2, 1968 was attended by all members "of the committee and the topics presented there-in were subsequently discussed at the committee meeting. Bausch & Lomb Automatic Dust Counter: Mr. J.P. Wronaki gave a rep rt n the tests that were conducted at ihe Raybestos-Manhattan plant In Manheim, Pa. The attempt to find a correlation between the Impinger and the Bausch & Lomb Dust Counter lead to the conclusion that little correlation between the two instruments exists, particularly In regards to large particle size as well as in areas of high dust onoentratlona. This phenomenon is due to the low trapping velocity f the Bausch Be Lomb Dust Counter, which is therefore not to be con sidered as a replacement for the Impinger. However,the Bausch Be Lomb Dust Counter has proven its feasibility as an excellent monitoring devloe. Mr. C.L. Sheckler reported on the Hembrane-Pilter Method and will present a paper on that method at the next meeting. Dust Control In the Manufacturing Process: Equipment designed for the reduction of dust In the various operations of textile manu facturing was extensively discussed: L. A bag opening, emptying and storage system, designed by Barkley Be Dexter, Ine. 2. A bag dumper, designed by the Vilkra Co. 3. Bag opening and hanrtling devices, designed by the member ocmpanles. *-'^6 1;. Various systems of moving blends to eards. 5* Balloonless spinning and twisting. 6. Vet weaving One member company reported on a balloonless spinning frame bas d on the woolen system. Balloonless spinning seems to be desirable inasmuch as the absence of a balloon results In a much lower dust count. Woolen type spinning frames operate usually at a considerable higher spindle speed than those now being used in the asbestos tex tile industry. As a result broken ends will stir up a great deal of dust. It is therefore imperative that the spindle will st p as s on as an end breaks. The manufacturer of the spinning framehas design d an automatic spindle stop motion and is at present experimenting with such a device, which is similar to the one already being used on bll onlM. twitting fraaot. (eontlnu,d) 8239 Page-2Minutes - Air Hygiene & Manufacturing Committee - continued: It is hoped that top management vill agree to an open exchange t* health safety ideas, including designs, plans, photographs and visitors In areas of mutual interest in regards to the reduction or (If ever possible) total elimination of dust in the manufacturing process. The members of the committee agreed to have technical inf r* mation concerning health safety practices on hand at the next meeting* Members of the committee stressed the point that dry weaving of asbestos oloth presents one of the greatest health safety problems in the production of asbestos textiles. To achieve the tentativ ACGIH threshold limit values of 2MPPCF of air or the alternate, 12 fibres per ce-5 mierone+, engineering asbestos dust abatement in the dry weaving process is,it appears, an impossible task. Wet weaving throughout the industry, however, will achieve tremendous strides towards accomplishing the standards recommended by the United States Public Health Service and the American Conference of Governmental Industrial Hygienists. It is also essential to produce and manufacture a product that will provide the fabricator and user maxi mum health safety. Again this can only be accomplished' by the process of wet woven doth. This material (wet woven cloth) is less dusty and therefore less hazardous. The Air Hygiene & Manufacturing Committee respectfully urges limned* _ iate action by the Board of Governors to coordinate this matter with all ATI standing committees and follow up with specific recommendation for industry-wide action. Respectfully submitted. H.H. Valter Cha 4 NOTE: THIS DOCUMENT DID BY PPG INDUSTRIES, INC. 8300