Document RJXO0vVeMM25Y14bRVJQm8DqX

FILE NAME: Asbestos Cement Pipe and Sheet (ACPS) DATE: EZ DOC#: ACPS0 DOCUMENT DESCRIPTION: DZZ >:',sbt\st~s-Cement Product Use Exposures mailbox:/c%7C/f/email/Outbox?1d=3A082BDE.7EBA@bcpl.net&number~o Subject: Asbestos-Cement Product Use Exposures Date: Tue, 07 Nov 2000 11 :20:46 -0500 From: Barry Castleman <bcastle@bcpl.net> To: paekdm@snu.ac.kr, info@pria.org, drjaya@tm.net.my, tldelhi@vsnl.com CC: ThebaudMony <thebaud@vjfinserm.fr>, Takala <Takala@ilo.org>, siqueirae@worldnet.att.net, LRoyer@compuserve.com, Rosskam <rosskam@ilo.org>, Rory <editor@hazards.org>, meenaco@pd.jaring.my, LK-A <laurie@lkaz.demon.co.uk>, rlemen@msn.com, jdwang@ha.me. ntu. edu. tw, reg.green@icem.org, afrank@uthct.edu, fernanda <giannasi@telnet.com.br>, ETUC <LVOGEL@ETUC.ORG>, Berikson. lo@fagdata.no Dera Friends, In campaigns against asbestos, it is important to point out the very high exposures associated with use of asbestos-cement (A-C) products in construction and demolition/renovation. I have tried to assemble some references on this and extract the key data below. If you want any of these references just let me know. 1. M Trosper (Johns-Manville) presentation at ASBESTOS INFORMATION ASSOCIATION NORTH AMERICA, THIRD ANNUAL INDUSTRY-GOVERNMENT CONFERENC Sept. 8-9, 1976, pp. 109-115. Describes dust control methods for cutting A-C flat sheet saying that without controls exposures were "about 250 flee". Using the very best control system that could be set up, this was reduced to 0.8 flee. 2. F Lomas (HM Inspector of Health and Safety), Presentation Notes Control of Asbestos Cement and Asbestos Insulation Board" at confrerence "Asbestos: Justice and Prevention", Nottingham 23 Oct. 1997. machine sawing without exhaust ventilation 15-25 flee abrasive disc saw, 10-20 flee circular saw, 2-10 jigsaw. 3. K Rodelsperger et al. "Estimation of Exposure to Asbestos-Cement Dust on Building Sites" BIOLOGICAL EFFECTS OF MINERAL FIBRES VOL 2 (Ed. JC Wagner), World Health Organization, 1980, pp. 845-853. peak concentrations of more than 100 flee cutting asbestos-cement sheet. 4. Kumagai et al. "Estimation of asbestos exposure among workers repairing asbestos-cement pipes used for conduits," SANGKYO IGAKU 35: 178-187 ( 1993) abstract quoted in English by Henderson in comments to WTO (Nov. 19, 1999). repair work on A-C pipes incl. use of high-speed disc cutter inside and outside of holes dubg in the ground to gain access to the pipes -49-170 (mean 92) flee inside the hole, 1. 7-15 flee outside. 5. R Weiner et al., Third Wave of asbestos-related disease from I of2 11/7/00 11.20 AM . - "Asbestos-Cement Product Use Exposures mailbox:/c%7C/f/email/Outbox?id=3A082BDE.7EBA@bcpl net&number 0 0 secondary use of asbestros S AFR MED J 84: 158-160, 1994, cited in CHRYSOTILE ASBESTOS, EHC-203, World Health Organization, 1998, p. 40. hand-sawing A-C sheet 5.7 flee for sweeping, 8.6 flee drilling, 27.5 flee sanding. After clean-up of work area exposures wetre 0.5-1.7 flee 6. "DUST EXPOSURES DURING THE CUTTING AND MACHINING OF ASBESTOS-CEMENT PIPE" NC Pipe Producers Association, March, 1977 and "Additional Studies" Dec. 1977. abrasive disc saw cutting of A-C pipe wet: 26-109 and 42-65 flee (operator), 31-54 and 10-49 flee (helper) much lower exposures reported with other cutting tools, industry trade groupm recommends against use of abrasive disc saw 7. WC Cooper, "NC Pipe and Construction Practices -- a Compliance Perspective." PERSPECTIVE '771 PROCEEDINGS OF THE 5TH ANNUAL INDUSTRY CONFERENCE, NC PIPE PRODUCERS ASSOCIATION, Apr. 18-19, 1977, Mexico City abrasive disc saw cutting of A-C sewer pipe 35 flee (operator), 64 flee (helper); A-C pressure pipe 20.3 (operator), 59.7 (helper). Lower exposures were reported for other operations, and time-averaging over longer periods produced lower time-averaged exposures for the high-exposure activities. The exposures in construction and demolition have defied efforts by regulatory agencies all over the world, and it is reasonable to look at worst-case situations as representative of what will happen as long as these products are used in construction. I invite you all to distribute this information. Barry Barry Castleman, Sc.D. bcastle@bcpl.net 2412 Pickwick Rd. Baltimore, MD 21207 USA Tel. 410-448-2648 Fax 410-448-2368 2 of2 11/7/00 11 20 AM