Document k69pBp5Yzxzyn5YDJVrKwvb1n

.-_>oes cos o CUCV Minutes _ cee 2- - ... .-il 28, 1975 to handle the suggested Fnybestos procedures. One suggested that these be forvarded to the Asbestos Information Association to be Included In their recotmenced work practices for OSHA. Another suggestion was for this to be distributed to our members for their distribution to their customers. It Is considered likely that when the revised OSHA standards come out that the suggested work practices will not be included. There does not appear to be any action that this Committee can take at this tine as regards work practices except for the suggested practices in the 3rake service centers. The OSSA Regulations and the Membrane Filter Method for Measurement Originally this subject was to be two items on this agenda: (1) The Membrane Filter Method for measuring airborne asbestos concentrations, (2) The OSHA standards with emphasis on the July 1, 1976 two fibers/cc limit. In discuss ing these subjects it was found difficult to separate the membrane filter technique frdm the OSHA standards. They are being combined for purposes of these ninutes. It was suggested:that with the current economic climate that perhaps there might be some da-emphasis in OSHA regulations. There has been de--emphasis on seat belts, and bumpers, emissions control and it'was suggested that perhaps OSHA. eight ease off on their regulations. One Committee member said that it was most un-likely that there would be any backtracking on the OSHA regulations. If anything they might be stiffened. One member stated that there were five different types of asbestos and' that some were more harmful than others. It was suggested that while this-night be so, all a asbestos is apparently linked with lung cancer and asbestosls* It would be difficult Co win: an argument that there are some types of asbestos that are not harmful to the respiratory tract. - Ac this point the method for counting fibers was discussed. It was stated by one member that originally a fiber would not be counted if it was not totally within ghe field. This was from a Johns-Kanville course on the use of the membrane filter technique. It was stated now that anything that is in the top or the lett hand borders of the sample, even If only partly in the field, are to be counted. Another member Indicated that when he took the 17ICSI1 course at Cincinatti that this was the way that he was told to count: any fiber on the left hand or top border, even if not fully within the field being counted, would be counted'in that field.- It was stated that the crystallization of the solvent used on the slide could sometimes make it appear to be an asbestos fiber. There is a method of preparing the slides so that the formation of crystals will not appear similar to asbestos fibers for counting purposes. This method Is apparently used by cost companies doing their own counting of the fibers. It was pointed out also that slides should not be re-used. Re--used slides cay accelerate crystallization of the solvent. It was stated there is as much variation in readings of fiber count as their are people making readings. One member suggested that he used the MIOSE manual as a Bible. It was stated that this manual was subject to wide inter pretation. A member indicated that he exchanged samples with iJIOSK in Cincinnati ar.c has had decent correlation with their counts. It was stated chat or. the lover counts that three different readings would come out plus or minus 10" on the count. However, when higher counts were read, the