Document kaLNR6zoEvEj0RoNoR16LodGV

FILE NAME Corning OC DATE 1963 June 20 DOC OC175 DOCUMENT DESCRIPTION Memo - Methods for Evaluating Kaylo Dust * an, U GU 1526 1526 | : 7 . wos Ia Dy, Lu COMPANY CORRESPONDENCE JUN 26 1963 ... ... ... Boynton - New York besisam A. Lotz - Granville EVALUATING METHODS FOR EVALUATING KAYLO DUST Dato wu June 20 1963 ee Mr. R. C. Amos - Berlin Mr. R. E. Davis - Newark York Mr. A. S. Kevlin - New Mr. O. W. Pfiefer - Toledo 7 | . Mr. J. B. Rhoads - Berlin Mr. H. V. Smith - Toledo . Mr. J. M. Westlake - Granville There are several Kaylo dust These can associated problems involved in the category of' be broken into into three specific problems as follows 1. The amount of dust which occurs 2 The dust becomes airborne when the 3 The health bazard of the dust with The current OCF Test Method No. M 07B is dest and does not give a measure of only the surface what I have been able toany indication of the other two problem areas From tion material is the ascertain the primary dust problem with any insula- dust that becomes becomes airborne when the fubricated This becomes a product is being tion shop is serious problem in any location where a fabrica- set up and a large quantity quantity of dust is confined area This is the being generated in a case in the Union Carbide Chemicals Institute West Company Virginia o oy 16 1963. Insulation Fabrication Shop which I visited I discussed the problem problem of dust on and Mr. Mr. Mr. Robert B. Peele the industrial hygienist dust messurement with . Just impinger for hygienist collecting samples The They utilized a standard amount of dust is involved and procedure for measuring the which we do not have in requires several pieces of small equipment laboratory our Based on the threshold threshold limit Governmental Industrial values of the American Conference of the air where Hygienists the maximum allowable asbestos dust in people are working is 5 millions of of air Based on the asbestos asbestos particles per cubic foot vilue of content of Kaylo this would be a somewhere between between 20 and 30 limiting of air of Kaylo dust above millions of particles per cubic foot According to the which a definite health hazard would exist hop with measurements made by Union Carbide in their the dust collection system fabrication four to 18 KPPCF with an system in operation there was approximately Thermolestos is average of 10 MPPCF using Kaylo used under the same However when 100 MPPCF which means that circumstances the dust count exceeds values were given to Thermobestos is a definite health hazard These camo but we know fromuspabsyt Mr. Peele as Brand X rather than by their actual experience that the material is Thermobestos sir. 2. H. Boynton -2- _ June 20 1963 The GCB Test Method shows Thermobestos which might be expected as Thermobestos has to have less dust than Kaylo molded surface areas whereas Haylo Haylo blocks are cut and hence will have residual saw dust on the surface I have in my files Coro.de follows in certain that their It is also obvious all the details of the exact procedure that Union collecting and analyzing dust samples I am not too procedure is representative for the general case but that the present OCF Test Method 07B is not answering wer busic dust problem 1 recommend that as soon as man power permits our Test Method begin Development Group the cis problem and evolving a assignment of more method which comes completely evaluating the closer to evaluating all of the facets of the dust problem This method should be made applicable to other products such as GPL etc. e WAL -- -- William A. Lotz Product Testing