Document 0gMp5Dz78qk4agNr7go7BV6Vm

Minutes Pago -1- Air Hygiene & Manufacturing Committee" Asbestos Textile Institute June 6, 1968 * Regency Hyatt House, Atlanta,Ga. In attendance: n.H. Walter, Chairman L.3, Moody H.Ii. Willingham L.C. Williams Absent: R.J. Smith C.L. Sheckler K.U. Nelson A.C. Link ` K.Q. Deyard American Asbestos Textile Corp. II.K. Porter Company, Inc. Uniroyal, Inc. Raybestos,Manhattan,Inc. Raybestos-Manhattan,Inc. Johns-lionville Corp. American Smelting Refining Co. Uniroyal,Inc. Johns-Manvillo Products Corp. Quests: Dr. L.J. Cralley - U.S. department of Health,Uducation U Welfare. Bausch e: lonb Automatic Dust Counter iir. L.C. Williams gave a report on the tests conducted at the Raybestos-Manhattan plant in Charleston,.--..C. The instrument has performed to the fullest satisfaction and proven it's feasibility for spot chocks as well as for tho dust control (recording) over extended periods of time in connection with the Strip Chart Recorder. To find a correlation bet\*een the Impinger and the Bausch i: Lomb Dust Counter, the instruments were placed approximately one foot apart and operated simultaneously over a period of one-half hour. The strip chart was running at a speed of 12 inches por hour, therefore charting tho dust counts over a length of 6 inchos on No. 37-01-31 chart paper. To find the averago dust concentration during the test period, tho following method was applied: The highest and the lowest points between each pair of vorticle green lines - selecting the one3 touched by the recorder pen were determined, subsequently totaled and divided by the number of readings, resulting in the averages of the high and low du3t concentrations respectively. Then tho avorago between the average high and the avorage low dust concentration was determined, result ing in the average dust concentration during tho test period. Tho results were then compared with tho ones from the Impinger. A comparison shows that tho figures ara - with few exceptions very closo together. Variations botwoon tho figures do not show any dear pattom. A number of advantages of tho Bausch f: Lomb Dust Counter versus the Impinger has evolved: 1. Dust concentrations can be shown and documented at any given moment ovor any l^^th of time. 2. The ohart papor represents a permanent record. 3. Any oxtromo dust concentrations cm bo traced to thoir oau::o, for examplo, opening of xrindowo, incroasotl vibration, broken ondj.jac 4. Tho evaluation of dust oounts is oiupln, and not roodily susooptiblo to hunian error. I Minutes - Air Hygiene 1 life. Coaiiittee - continued: Pege -2- 9 5* Tho instrument can be used for continuous unattended monitoring* 6* The operation does not require a skilled technician. 7. One person can easily conduct 2> to 30 toots por day, including the time needed for evaluation of the tests. 0. The dust counts con easily be broken down as to particle size. 9. The efficiency and simplicity of the instrument results in savings in labor cost. The instrument therefore should pay for itself in a relatively short period of time. Por tho proper use of the Dausch & Lomb Dust Counter the following points should be watched carefully: 1. The air intake has to be protected by a screen in areas where many largo fiber particles become airborne, to prevent the intake from clogging. 2. The instrument shall not be placed noar a humidifier since it will record uater droplets as dust. 3. The daily calibration requires special care and the instructions are to be followed closely. 4* Use of a pushcart is recommended whenever a series of tests in various locations is to bo conducted. fj. Por the use of the instrument over a longer period of time in some location, the use of an electrical outlet rather than of the batteries, is recommended. The Dust Counter will be usod at tho Raybentos-^Ianhattan plant in llanheim, Penna., until the middle of July; then will be shipped to the Uhiroyal Plant in Hogansville,3a. The instrument may bo shipped without any danger of damage. In a sturdy wooden box lined with Styrofoam. Dust Control in the ifcnufacturinn Process: A member of the coraolttoe suggested that experiments should bo oonduoted in wet spinning and/or wet twisting, since, due to proper enclosure tho dust concentrations in the blending and carding operations are already reduced to a minimum. Although changes in the stuoture and appearance of the woven material will be unavoidable, it appears to be advisable to experiment in that direction for the protection of our employeos and those of our customers. The application of proper finishing methods should also be explored to restore or even improve the appearance of material woven with wet spun and/or wet twisted yams. All oammittee members reported that thoir respective companies have dieoontinued the rise of Lenox Anti-Ply SD-S. iiont companies con tinue, however, the use of standard mineral oil in their blonding operation. Efforts to find new spraying components to hold moisture in mixes are being made. Environmental Health Survey 9 Dr. L. J, Crallcy, 'J.S. Tublic Health .Sorvico, roported on the progress mado in research of tho influence of toxio trace metaln in oonneotion with asbootos fibor. Various important publications are to be expected in the near future. illnutes - Air Hygiene is iifg. Coimoittoo - continuod: Page -3- Hyrlena and Labor lalationa: All oommitteo members present agreed tint it seems to be imperative to improve working conditions, rest roans, and the general plant appearance to an extont that the asbestos textile industry can oompete successfully with other industries in attracting labor, inasmuch as a higher wage level does no longer mean a decisive faotor in obtaining desirable operators. Air conditioning might become a "must" in the near future. Respectfully submitted, H, H. Valter Chairman t'!