Document jgQYMpBzaeyvD6JzVd1JZzoV5

FROM SUBJECT FIELD POINT OR DEPT. & BLDG. NO. Chief Chemists, Chemical Group_____________________________ . I FIELD POINT OR DEPT. &BLDG. NO. P. M. ZakriskiI Brecksvflle R & D Center, D/85Q6_ The Analytical Cross Check Program for OSHA Work m.ME YOUR liTTER DATE THIS LETTER >rch 22 r 1970 m 021979 You all recall the vinyl chloride cross check program of 1977. For a number of reasons it was not continued in 1978. Beginning April 2, we will reestablish the .program and expand it to Include acrylonitrile, benzene, chloroform and carbon tetrachloride. Please advise me if you cannot participate in this program. John Born from the Corporate Environmental Service lab is the coordinator of this and all quality control work generated for environmental purposes. Please contact John regarding any part of this program. The standard reference material samples will be prepared and immediately distributed according to the enclosed schedule. 2nd Quarter 1979 3rd Quarter 1979 4th Quarter 1979 1st Quarter 1980 AN & Benzene 4/2 AN & Benzene 6/25 AN & Benzene 9/17 AN & Benzene 1/7 CC14 & CHC13 5/4 CCU & CHC13 7/27 CC14 & CHC13 10/19 CC14 & CHC13 2/8 VC1 6/7 VC1 8/30 vci 11/29 VCI 3/13 Vinyl Chloride samples will continue to be preloaded flasher tubes. All other samples will be preloaded SKC brand 150 mg carbon tubes. The distribution of samples will be in lots of 5 tubes for each pollutant and all loaded to approximate the anticipated load from a 6 hr. sampling at the permissible exposure concentration. Samples will be sent according to the following plan: Chloroform and Vinyl Chloride Carbon Tetrachloride Benzene Acrylonitrile Avon Lake Gen. Chem. Avon Lake Technical Louisville Calvert City Pedricktown Henry Long Beach Louisville Orange Calvert City Henry Akron Gen. Chemical Louisville Pedricktown Avon Lake Technical Please notify John Born when you receive your samples. BFG-49S6-D 2/77 L1THO US* NGC 15468 2- - The intent of this program is to examine the precision and accuracy of the analyses. In the very near future we will propose the expanded use of the field validator apparatus to examine the combined sampling and analysis precision. I will remind you that the environmental lab already participates in a national cross check program sponsored by the American Industrial Hygiene Association. Your partici pation in this BFG program ts viewed by me as a link to that national program. As a result, we can establish a comparison between our plant labs and the other labs throughout the country. jb cc: R. W. Strassburg E. B. Katzenraeyer, Jr. J. A. Klupar J. M. Whitney J. W. Born R & D Files 0. S. Kurtz R. E. Harris C. E. Titus DISTRIBUTION A. J D. G. L. B E. E C. D C. W R. R D. P A. F Vielhaber - Akron Desrosiers - Avon Lake General Chemical Crider - Avon Lake Technical Center Atkins - Calvert City McCrosky - Henry Ball - Long Beach Taylor - Louisville 01 Keefe - Pedr1cktown Whelan - Orange Corporate Environmental Service 15469 See Distribution PROM T.S. Bialke SUBJECT FIELD POINT OR DEPT. & BLDG. NO. FIELD PWOVINJVTI OvrRs DLTECPrTl.. SQLt BDLLLDFGwt. NO. Akron - D/0020, 5~H MINIMUM SAMPLE TIME FOR PERSONAL AIR MONITORING I DATE YOU LETTER DATEZ TIHHIS9 L.LECTMTSERK 9-12-79 SEP 131979 Review of some previous personal TWA exposure monitoring data has shown that a number of samples have been taken for less than 6 hours (360 minutes). All personal air monitoring for air contaminants for evaluation against an 8-hour TLV must, as a minimum, be con ducted for 360 minutes. Any time less than 360 minutes cannot be used for calculation of average exposure or documentation of compliance with government standards and will not be accepted by the BFG medical surveillance system. v Distribution: H.W.Dietz/E.B.Katzenmeyer,Jr. H. Waltemate J. Klupar B. Holmes J. Glickman R. Hardesty N. Meli D. Anderson G. Brewer F, Whelan C. Weidenfeld T. Galiotto K. Konter D. Langlois T S. Bialke Sr. Industrial Hygienist SPG*43S-D 2/77 L1THO USA NGC 15470 ^ Chief Chemists, PVC & VCM Plants P. H. Zakriski m*. -- r Chemical Group OCT 2 8 1981 * Brecksville R&D CentAr, D/8506 Oct. 26, 1981 SUBJECT: Analysis of Personnel Monitor Samples for VCM For the past six years the Bendix flasher has been an integral part of the analysis of personnel monitor samples for vinyl chloride monomer. Although many of the flashers required special plumbing before successful operation, they all successfuly functioned over the last six years. It is my impression that many of these Bendix flasher units may now be in need of replacement. I am writing to ask your view on the condition of these flasher units*and issues relating to the flashers. Is it true that your units are showing signs of age and need to be replaced? How much longer can we rely on them? What replacement thermal desorbers do you know of that are commercially available, and do you have any experience or information about them? Do you see a need to continue using thermal desorption in the analysis? Would you have any operational problems with the NIOSH method using CS2 desorption? If a method using the P&E headspace analyzer was used, would there be any serious operational problems? Do you have ariy specialized detectors like electron capture, photoionization or alkali bead? Have you ever used or evaluated any of these detectors in your labs? 1 am taking this occasion to question several things, not just the thermal desorption unit. It may be time we look into using a method that employs fresh carbon samplers rather than cleaned and reused carbon samplers. It may be time to consider improving the absolute sensitivity of the method by going to an advanced detection system, e.g., photoionization detection or electron capture with 02 or N20 doping at the detector. It may be time to increase the automation in our testing and reduce the large amount of operator attention that is required for the Bendix flasher method. Finally, it may be time to consider badges, and in so doing,* reduce the labor needed to prepare a field sample. This year I have been very impressed with performance data for the Reisner (REAL) badge. (This is the silicone rubber-faced, metal badge that contains about 1% grams of carbon.) It appears that this carbon badge samples and holds vinyl chloride well enough to give' a .98 correlation coefficient with carbon tube samplings. And, there is only a slight bias. In a lengthy study funded by NIOSH, this badge performed so well that the experimenter. Dr. Jim Perkins, Utah Biomedical and Testing Laboratory, recommended to me that we give the REAL badge serious consideration. In the study by Dr. Perkins, the badge showed recoveries within the 25% NIOSH criteria and capacities which would enable it to function for eight hours at concentration well above the permissible exposure level. I would be very interested in hearing what you may have heard of or experienced with the REAL badge. NGC 15471