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FILE NAME Manville JMA DATE 1977-1979 DOC JMA027 DOCUMENT DESCRIPTION Asbestos Sheet Exposures & Hygiene EXHIBIT ral ao SN ; JM Manville Research and Development Center -fl - Afl1A Tech Report No. E411 Date March 16 1979 Title , FIELD EVALUATION OF CORRUGATED SHEET SAW SUMMARY A circular saw for the dust free fabrication of corrugated asbestos cement was evaluated on the job site February 26 Colorado 1979 This at the Manville Research Center in Denvaenrd record workman's trial was done to generate field dust counts reaction and comments to the tool The saw was used by Mike Geyer of Centennial Air Conditioning who was refinishing the cooling tower Denver Research Fabrication consisted of cutting four one foot by four foot for a total cutting of sixteen linear feet All work panels was done outside and personal samplers were worn by Mike The asbestos Geyer counts and the author with one area sample taken of M Health Safety and Environmental taken by Stella Gaburo 0.05 cc and 0.0 cc respectively Department were 0.0 cc and are to be compared to The samples taken were peak samples an OSHA peak standard of 10 cc of the corrugated sheet saw and Nilfisk GA vacuum Performance be excellent by Mr. Geyer He suggested all sites was judged to materials should be equipped with cutting asbestos containing tools of this type His belief was that the workmen acceptance of these tools would be good It is found recommended and samples that a job taken even with more severe conditions be though counts from this trial were well within acceptable limits Contents Summary only ARBAWAN ARBAWN Reported by ARBWN ARBAWAN G. R. Bauman Asbestos & Mineral Technology lkh Director . Mineral & Filtration Technology PRODUCED JM - 83 wee ee Distribution C. J. Sufewski M. Harris D. Poutiatine J. Connor J. Reis D. Kelleher R. M. Krone L. Siebert E. M. W. B. G. L. Fenner Reitze Swallow J. V. Magee J. W. McLain J. P. Leinweber P. Kotin J. Laipenieks H. B. Moreno A. L. Cini F. E. Schlachter G. Jachobs F. Colin J. Vandenberg J. R. M. Hutcheson R. E. Sampson A. R. Dennis E. E.E. M. J. D. Day Webb E. B. McKenna R. B. Gresham H. M. Hay J. Power 3-15 2-12 -2-14 2-14 2-14 2-14 2-20 2-14 1-06 1-06 1-06 2-10 2-20 1-06 1-06 1-05 3-14 3-14 Wertheim Mol Mol Mol Asb Asb Asb Asb Asb Asb Asb Asb Asb Keywords Asbestos Asbestos Cement Dust Dust Collection Fabrication Environmental Health W. C. Streib W.J. Plichta G. R. Bauman 2 F. M. Bodycomb 2 S. Gaburo D Information Center 4 Sen eran fen PRODUCED JM PRODUCED SM Manville Research and Development Center AIA Tech Tech Memorandum M411-821 Date October 16 1978 TRIP REPORT - DANSK ETERNIT FISKER AND NIELSON GERMAN ETERNIT INTERNATIONAL ASSOCIATION ASBESTOS INFORMATION CENTER ASBESTOS and PANELS LIMITED WEMBLEY ROOFING COMPANY UK and CAPE 30ARDS The was the of this trio by D. M. ptroimgaartyherpuripnofsoermation concerning the field fabrication of asbestos cement also included relating to asbestos usage Kelleher and F. Bodycomb development of tools for products Information is and asbestos cement production Dansk Eternit Malborg Denmark - Mr. Mr. Mr. Mr. Axel Schonnemann - Managing Director K. Thiele - Head Department of Industrial Tage Paul Relations Lilholt - Manager Sales Service Department Hanson - Environmental Control Group - Tool Development republicatonor Most of their production is corrugatoefd busihledeitngasnd alisthouusgehd some primarily as roofing for all typuessed as siding or facades both flat and corrugated sheets are exterior Dansk Eternit maintain their own method and interior and facilities for making dust counts membrane filter of 2.0 cc are within the legal TLV distrbuion all stations in their factory the TLV will be lowered to 8 hour TWA It is expected that 1.0 cc later this year general made to a number of job sites including barns Visits were for apartments single family homes a hospital brewery municipal and commercial buildings The standard not incinerattooorl sfporortassbeasrteonsa cement is the offset head grinder with collection It generates cutting - an abrasive disc blade used with no dussi t te cutting requirements Confidential copious amounts of duswthereThethperyimoavreyrlap on a roof This is time are to mitedronecoornnetrhse ground by cutting 4 to 6 sheets at a generally while still on a pallet A second problem area is to trim along a pitch meet in a roof edge where roof sections of different of sheet This is done on the roof and two thicknesses Confidetal valleycut simultaneously In addition to these situations must be sawed and cutouts around PRODUCED entire sheets must occassionally J-M 83 so Pride a aid C. J. DeBiase .. .. Fenner M. Harris D. Poutiatine J. Connor J. Reis D. Kelleher R. M. Krone L. Siebert K. J. Whalen R. E. Loeffler J. Laipenieks J. R. M. Hutcheson R. E. Sampson A. T. Dennis E. J. Day M. D. Webb E. B. R. B. McKenna Gresham H. M. Hay - 3-15 - 1-06 - 2-12 - 2-14 - 2-14 - 2-14 - 2-14 - 2-20 - 2-14 - 1-05 - 1-04 E- 1-05 Asb - Asb - Asb - Asb - Asb - Asb - Asb - Asb Keywords Asbestos Asbestos Cement Dust Environmental Fabrication Health S. Speil W. C. Streib W. J. Plichta 2 G. R. Bauman F. M. Bodycomb 2 & Information Center 4 PRODUCED JM - 83 UM Manville Research and Development Center Memorandum M411-821 Page 2 2 beams etc. fabrication must sometimes be made which we were shown are Tools listed for asbestos in Table . cement Dansk has modified 3 magnani machines to precut miter corners and plans to have all their machines with this capability in 2 specific site problem years This should alleviate this although some mitering will probably always be necessary Installers in Denmark work on an incentive basis and will not use tools which decrease their productivity Specifically it was any would not use a ventilated tool with attached hoses on stated they work to solve specific problems are a roof Proposed development as follows 1. Evaluate Sawzall and sabre saw with various bdulsatdesonalnyd different speeds to produce coarse airborne been developed in without dust collection Such tools have If satisfactory they could be used for working on Gor ero mnantyhe ground for miters edge trimming in valleys or cutouts virtually all required operations at roofs republicaton 2 For small contractors and yourselfers tool for use on the roof might be acceptable if it a hand powered could cut rapidly or 3. A circular saw is being built with shield to be used with a vacuum source which may be acceptable for use on the ground bv large contractors distrbuion Dansk have done little tool development work in the past 2 years but are concerned about the effect of dust during installation on their product sales They state that their primary problem with general tools is their lack of acceptance by workmen in the field The for best solution to this problem is thought to be the development of tools which operate faster and are more convenient to use not - Asbestos and Asbestos Cement Production - Confidetal The and and following are miscellaneous asbestos cement manufacture various conversations observations concerning by Dansk made during a asbestos plant tour PRODUCED JM - 83 JM Manville Research and Development Center Memorandum M411-821 Page 3 Dansk Eternit has 6 magnani and 5 hatschek machines and are building one additional magnani which produce 200,000 to 250,000 tpy Their plant is immaculate with only a slight amount of fiber in evidence in the warehouse and at the bag opening station Potentially the most important item was that Dansk Eternit has asbestos sheet product containing cellulose and developed an which can be made on standard magnani a special polypropylene and hatschek machines It was stated that this is a Danish development and it is therefore presumed not to be the same material being marketed by Norcem The material is still being tested and we will be advised of further details when their patent position is established This product was carefully and deliberately presented to us by Mr. Schonnemann as a development very important to Dansk Eternit Mr. Schonnemann discussed M fiber deliveries as follows republicaton or distrbuion general for not 1 56D30 S5K30 S4T30 - MRA is satisfactory - Three shipments have but filtration is poor been received this year had poor filtration and low MR but the last The first shipment was satisfactory - Impact strength was OK but filtration and MRAMRA were inadequate He is dissatisfied with the quality frequently being poorer than that which the specifications call for and the variation in quality from shipment to shipment He stressed very strongly that he wants Mert Webb to visit their plant to learn and observe their test methods and to establish a close working relationship with Jeffrey Mine personnel At the time of our visit an Asbestos Corporation representative was in Aalborg observing the Dansk Eternit test methods The implication is that Dansk has problemns with Asbestos Corporation similar to those stated to us concerning M fiber To present an image at least equal to Asbestos Corporation we should arrange for a visit to Dansk Sternit by Mine personnel in the very near future Confidetal Fibers warehoused by Dansk Eternit were M S6D30 and 7F19 for ACE Nordenham 650-6D and NH 470 S5K30 S4T30 BC4T BC 5595 PRODUCED Cassiar CY HVL5 Cyprus HSH and Cyprus 33. Cape 533 and S44 amosites are used only for Navilite a low density calcium ,~ JM - 83 4 ae On abel ore JM Manville Research and Development Center Memorandum M411-821 Page 4 silicate insulation board shipped to Communist countries All other Navilite production is asbestos free composed of glass fiber mineral wool CELITE and lime All Navilite will will then cease soon be A few asbestos and purchases of amosite high density blocks of S5K30 were on hand Their only comment was that they prefer no tape on the packages and water soluble glue should be used to facilitate bag repuloing Internit a relatively low density insulation board made from cement 8 percent asbestos and 15 percent cellulose has portland due to dust created by site been banned from use in Denmark fabrication This is a good example of the need for free fabricating tools which will be used by workmen on the job One magnani is used only to make Navilite Edge trimming is done with a high pressure water jet Dansk personnel state that a mechanical slitter with the green wet product gave fiber counts of 10 cc republicaton Two Tyne bag openers are in use Dansk personnel are somewhat dissatisfied with them The bag slitting knife must be strengthened and the spiked roll which removes the bag does not or release them Changes in its design are planned All bags both plastic and paper are shredded in a machine built by Plastic and used in the sheet furnish Processing Equipment Company After the bag opener the fiber and 25 percent water are mixed and distrbuion sent to a rod mill Plow through the mill is continuous and residence time is about 6 minutes The fiber emerges from the mill feeling quite dry and does not appear to be extremely open general The only wads are small and flat in maximum diameter and very friable No vigorous mixing is necessary for dispersion for The fiber is blended with cement and water in a gentle paddle not mixer before being sent to the machines - Confidetal PRODUCED Cured scrap is crushed in a hammermill and fed to a ball mill with and cement clinker in the adjacent Aalborg Portland Cement gCyopmspuamny owners of Dansk Eternit plant All cement from the . plant is used for asbestos cement production J-M83 ee ee ee ee a JM Manville Research and Development Center Memorandum M411-821 Page 5 Fisker and Nielson- Copenhagen Mr. Johannson - Engineering Department the Nilfisk vacuum cleaner We briefly Tdhiisscuscsoemdpantyheprfoedausciebsility of building a device into their machines which would sound an audible warning when the filter required cleaning Mr. Johannson was adament in his will be refusal to built into consider the such a change A valve arrangement machines to allow the ingress of outside air to cool the motors when they overheat Data were presented that showed reduced a maximum the suction of 4 percent power of the GA73 machine would be with all valves open We have done very little in the comparison of vacuum cleaners such an investigation may be warranted and republicaton Asbestos Institute- German Eternit Neuss Germany Mr. R. W. Dorner - Managing Director - or Amiantus Asbestos Division S. A. Mr. H. Schwermer Dr. K. Robock - Director - Asbestos Institute distrbuion Mr. Mr. Mr. U. Teichert - Asbestos Institute K. Sisleben - Asbestos Institute Ikes - Neuss Plant Manager general Tool Development f^r Eternit produces a wide variety of corrugated and flat sheet products used for roofing and siding on of the many types of buildings company has Number 1 not The environmental cleanup effort worldwide whether required by law Porrinoortita yre Aelxlpecctoemdpantyo pbelanwtisthin a 2.0 cc TLV in 6 months The emphasis placed on the development of tools for the dust that field fabrication of asbestos cement is indicated by the fact Karl Eisleben previous manager of the Neuss plant was Confidetal PRJ ODM UCED temporarily assigned the fulltime task of tool development . . ae oo JM Manville Research and Development Center Memorandum M411-821 Page 6 The Asbestos Institute has very modern facilities for membrane including an automatic filter dust count measurements are currently debugging computerized counting device which they and an electron microscope The standard tool for cutting asbestos cement in Germany as in disc grinder The primary Denmark is the offset head abrasive effort of Mr. Eisleben has been implements with debris tool development dust collectors which produce coarse airborne of no in undesirable quantities of cuttings on the floor This results and countries this may be the work area but in many situations Mr. Eisleben stated however that dust counts with do over a aalclcesputcahblteools were below 2.0 cc measured as they 2 minute time span of peak activitdyescarnidbendot ia n Ttaibmele we2ightTehdey have average Tools we were shown are but the main done a tremendous amount of worrekinton rodtuoocltiodnevoeflotphmeenutse of the emphasis now seems to be the scoring knife republicaton or distrbuion general for of corner cutting has been undertaken in the factory The problem by Eternit In Austria they cut corners before curing be broken off or left The intact Swiss score corners so stated they may that in practice they all break off as desired It was are cut after curing for the 2 foot sheets At Neuss the corners only Eternit is introducing a system whereby the sheets are instead of overlapping which butted with a covering cap eliminates the need for corner cutting that M evaluate the unshielded sabre saw at low It is proposed speed and with coarse blade for cutting corrugated sheet A and will be redesigned for use Draenert clipper has been ordered with 8 mm corrugated sheet not Asbestos and Asbestos Cement Production has 5 factories in Germany of which Neuss is the smallest Eternit maximum of 300 TPD with It has 3 Hatschek machines and produces a 150 employees Confidetal PRODUCED PRODUCED JM JM Manville Research and Development Center Memorandum M411-821 Page 7 They have Fibers on a large stock of hand include the asbestos some following being stored outdoors M 6D30 Advocate A25 and Cassiar AX Nordenham NH 450 JPT 50 and 50 Russian P5-50 A35 and 470 the Russian fiber is brought to Germany by ship in They state that which are frequently broken Eternit must then before shipping loose bags palletize strap and shrink wrap at their expense so they may to Neuss It was stated that Eternit likes paper bags be recycled Plastic bag disposal is a problem republicaton Fiber is passed through a fluffer similar to a Vanco 45 to 50 minutes with 30 at the bag percent opening station Kollerganged diameter pulper The impeller in water and then goes to a 6 foot in diameter and the pulper is toothed approximaitselgyuesisnedchte hast this pulper would similar to a Cowles mixer It and probably shorten have high shear action and substantially open or the fiber Cement is then added to the slurArlyl pinroa ducvtiigoonrouiss paddle mixer and is fed to the machines their low density insulation board normal cured except distrbuion The factory is very clean with no dusty areas in evidence general Asbestos Information Centre- London for Mr. W. Penney - Secretary General not Confidetal PRODUCED - discussion was held concerning environmental problems A general with field fabrication of asbestos cement He stated atshsatocitahteedTLV now at 2.0 cc is expected to go to 1.0 cc in the near future Fabrication of corrugated sheet is apparently offset angle the primary problemuseidn tfhoer ffiieelldd faTbhreication of this product in grinder is mainly the UK JM PRODUCED JM Manville Research and Development Center Memorandum M411-821 Page 8 Asbestos International Association- London Dr. R. Gaze - Chairman Excecutive Committee Sir Neville Stack Director General Mr. L. A. Van Rosse Assistant to the Director General A general discussion was held concerning tools for the field fabrication of asbestos cement They agreed to either set up a new AIA committee to consider this problem or assign the subject to an existing committee republicaton The primary usefulness of such action will probably be to collect and disseminate information on the subject to various interested parties thus making companies aware of what has been done and what is available in the area of fabricating tools Wembley Ceilings Limited- London or Mr. J. J. Shanahan Director The company has 700 employees and its main business is industrial distrbuion roofing both metal and corrugated asbestos cement Discussions were held with Mr. Shanahan and a visit was made to a factory roof being installed It was stated that 80 percent of all cuts are made on the roof including mitering corners and cutting along general gutters and roof edges The angle grinder is the primary cutting for tool Men work on an incentive basis and probably would not use a not scoring knife except for the odd small cut A tool producing coarse airborne debris might be acceptable but it is - questionable whether a vacuum cleaner would be usable on the roof Wet cutting on a roof would be totally unacceptable Confidetal work could Mr. Shanahan considers the field fabrication of asbestos cement a threat to the continued use of the product and is very interested in any tools that may be developed A roofing association with 400 member companies is being formed and could be the vehip PRODUCED introducing new tools into the U.K. ete Sey oem ae oo. - JM Manville Research and Development Center Memorandum M411-821 Page 9 Cape Boards and Panels Limited- London Mr. A. S. Crook - Manager Technical Services Mr. Ken Millest - Environmental Engineer several dust controlled tools primarily for Cape has developed with calcium silicate insulation boards See Table 3 been somewhat less use of the tools has evidently Workers acceptance an asbestos board which now than overwhelming Cape markets of their sales They give constitutes approximately 50 percent to whether or the impression that they therefore are indifferent fabrication of their asbestos not tools are used boards for field They simply offer their asbestos material containing with environmental if there is any question of compliance controls republicaton or distrbuion general for not - Conclusions There is a high level of interest among tbhuossienepsasrticeosncewe rnivnigsitteodols who are involved in the asbestos cement fabrication of the product The problem of dust for field installation is generally viewed as 2 generation during product and there was general threat to the asbestos cement iinntdeursntartyional cooperation is agreement that company required to find the solution There clearly are successful programs underway to develop asbestos substitutions for various board products Efforts to develop installation methods that are envtoirotnhemenwtoarlkmleyn in the trouble while still being acceptable worthwhile method of keeping asbestos cement a field would seem a effective building material Confidetal Reported by 4.577 4.577 4.577 73h F. M. Bodycomb Asbestos & Mineral Technology JM Manville Research and Development Center Memorandum M411-821 Page 10 TOOLS TABLE OBSERVED AT 1 DANSK ETERNIT Kwikrin- Hand powered shear usable for thin flat sheet only Circular Saw- Equipped with an open type shroud and must be used on a vacuum table Therefore it must be used in a shop or have been sold by Dansk central stationary location No saws -_ Nibbler This has been evaluated by J without dust Danklip debris Slightly awkward to collection It produces only coarse sheet Its main handle it was designed for use on corrugated at a time and - drawback is that it can cut only one 8mm sheet this apparently is the reason it is not widely used Approximately 50 to 60 have been sold to Danish contractors republicaton Shear Shear Attached to an electric drill flat sheet to 12 mm in thickness it makes a smooth cut on or distrbuion Nibblertine- An English nibbler mounteadsbeisntoas tcaebmleent spaowortlyype but frame it costs about 3000 It cuts insulation board Usable only is more effective with low density as a shop tool Hand Clippers- Evaluated by M this tool can cut flat sheet to general 6 mm thickness| for Scoring not workmen Knife- Evaluated as a replacement by M for the it has not been accepted by power abrasive disc grinder Confidetal PRODUCED Vacuum Cleaner- In 1972 Dansk evaluated 14 different vacuum and concluded that the best for their purposes was the cleaners Swedish Pullman Model JB503 They expressed satisfaction with this unit however it was noted that they directed the exhaust air from the vacuum out a window via a hose and are actively trying to develop a program with better machine from scratch in Prima A a vacuum cleaner a cooperative manufacturer JM 83 : UM Manville Research and Development Center Memorandum M411-821 Page 11 TOOLS OBSERVED TABLE 2 AT THE ASBESTOS INSTITUTE Pipe Fabricating Tools to 500 mm - Hand powered it Single Point Scoring Tool - Pipe up clamps to the pipe exterior Hacksaw- Clamps to pipe Small unit cuts pipe to Fein Power version to in diameter Variable in diameter larger Blade tooth speed drive allows cutting up to 350 cycles spacing is approximately in Field Lathe- Hand or power operated republicaton Hole Cuttersor distrbuion general for Single Point Cutter- can be Pneumatic impact drill cuts hand or power operated groove in pipe This produced visible fine borne dust and it is questionable whether a 2.0 cc level is actually attained Hole Electrically powered it operates at Saw100rpm With gasoline engine at 600 rpm much dust is generated even with the use of a water spray Tooth spacing on the on the blade blade is approximately 1-1 not & Lathe- A rather complex machine for use with large Pipe Saw diameter 700 to 2500 mm pipe is being developed Operated by blade at 100 rpm from the 2 motors the machine cuts thleathpeipeattachment is installed and the interior After cutting a pipe is machined Confidetal PRODUCED Single Point Pipe Cutter- Usable with pipe from 50 to 200 m either by hand or with - 83 diameter the unit can be operated JM coe an ty ceria mms Research and Development Center Page 12 electric drill attachment metal enclosure The unit The cuts cutting area is inside fast but fine dust is a sheet emitted Sheet Fabricating Tools Handsaw- A keyhole type it cuts quite rapidly Knife- Use of the tool is considered a step backward by Scoring workers in the field New designs are being made to give the of a modern tool and thus gain worker acceptance appearance the tool works very well for corner and With practice but is not acceptable for cutting across longitudinal cuts is trying to reintroduce the tool corrugated sheets The company in the field for widespread use Brace and Bit- This hand powered tool is recommended for use in drilling holes The tool has been fitted with a small bracket along the republicaton Sabre Saw- the board and allows cutting along the or bcolnatdoeurswhiocfh acocnotrarcutgsated sheet Operated without dust collection at 1600 rpm and with a coarse blade the debris generated reportedly does not become airborne and gives a observed however dust count of 0.8 being blown about cc Considerable dust was with a bed plate and vacuum distrbuion bpyicktuhpe m oo nt loyr abcoovoelintghe apilrateEqutihpepetdool is used for flat sheet general Festo Saw- With a diamond blade and vacuum pickup it is used to 1.0 cc but a cut flat sheet Their tests with the machine gave M evaluation resulted in 4.5 cc for not Mafell A circular saw with vacuum attachment above plate it must be used over a vacuum table This is usable only in a fixed location the bed a shop tool Confidetal PRODUCED JM Draenert Shears- Designed for cutting sheet metal it can be used for cutting flat sheet to 5 mm thickness used Only coarse debris is M will attempt to generated and no vacuum pickup is ` modify the tool for use on 8 mm corrugated sheet - 83 ee ee ad _ oo we JM Manville Research and Development Center Memorandum M411-821 Page 13 Cape Drill M Shield- Eternit recommended use of this tool as does Bosch Drill- Used with vacuum pickup the tool is somewhat awkward to use Point Hole Cutter- The tool is used without dust Single collection It is difficult to use makes a poor quality rough edges and creates considerable fine dust cut Head Grinder- Equipped with a carbide blade with a Offset board the tool reportedly dust collection shield only above the that fiber counts would be gave 2.0 cc Visually it is guessed higher republicaton Festo Orbital Sander models Vacuum pickup is through holes 2 The units exactly as around the edge of the sanding hweoardk very well but could be received improved from the manufacturer by redirecting the motor cooling air which blows dust of these tools was from the board into the air The performance or impressive distrbuion Belt Sander- As received from the manufacturer the tool Festo the back of the belt only There was some vacuum pickup at visible dust but it worked surprisingly well has Rockwell Sawzall- They evaluated the tool but found it gave an general unsatisfactorily rough cut for Fein Fein Saw- Eternit is experimenting with this tool which is not similar similar to the Sawzall - This Danish tool has been evaluated and is Danklip Nibbler- consider the quality of the cut it recommended by Eternit They PRODUCE makes to be poor however Confidetal Vacuum Cleaner- Eternit Oberdarfer Maschinen D paper bag filter and an uses the WAP Turbo made by Guido 7919 Bellenberg West Germany It has exhaust filter reportedly can be used a wet - 83 ee te aeons ener -_ - wee JM Manville Research and Development Center - Memorandum M411-821 Page 14 or dry and pulls 300 cu hr air Vacuum cleaners used with be approved by the government Social asbestos in Germany must to Insurance group Eternit has not undertaken any program : compare vacuum cleaners republicaton or distrbuion general for not - Confidetal PRODUCED JM - PRODUCED ey - Coen ~- = a ee ee eect ee JM Manville Research and Development Center Memorandum M411-821 Page 15 TABLE 3 TOOLS OBSERVED AT CAPE BOARDS AND PANELS LIMITED Circular Saw- A plastic shield with vacuum pickup fits over the half of the blade The saw must be used with a wooden upper under the board being cut to prevent dust emission backing strip from the lower part of the blade This would appear to limit its utility in the field Sabre Saw- A saw made by Bosch is equipped with a dust collection shield only on the upper part of the unit Drill Shield- This is an excellent dust collection shield and is recommended for use by M republicaton Orbital Sander- The dust collection area surrounds the paper on the vibrating foot We did not see the tool in use but based on the results with the Eternit sanders this tool would probably or work well distrbuion Vacuum Cleaner- Cape prefers suction of 240 cfm the BVC Limited model TH6 unit with general for not - PRODUCED PRODUCED PRODUCED JM - 83 Confidetal M M Manville Asb Cement Cement Sheets Internal Correspondence To P. Kotin M.D. - 1-06 D. 11. Markusson - 2-18 From E. M. Fenner - 1-06 Date August 17 1978 Copies J. V. Magee Subject ASBESTOS CAUTION LABELS ASBESTOS CEMENT PRODUCTS I enclose a copy of a letter from J. V. Magee that indicates that Nashua and Waukegan will label each full sheet of asbestos material shipped from those plants You will note in the second paragraph of his letter that Magee questions the need for labeling cut pieces and samples My own inclination is to say that such pieces where we know that further fabrication will need not be labeled not be performed by the purchaser Conversely where we know or suspect that additional fabrication will be done then the sheet should be labeled May I please have your comments i i E. M. Fenner EMP ih Encl PRODUCED PRODUCED JM - 83 ame + MM wee oa : i hehe i <P =D -CRGRECREE = aw 2/22/20 02/20 A SERVICE FOR ARCHITECTS In the the developing and perfecting of their building materials Johns Manville has acquired during last seventy years an experience experience and a knowledge of building construction which gratis at the service of Architects and Engineers who desire to make use of it is placed At your request a representative of Manville's Manville's Architectural Service Department will be glad to consult with you in connection with the the use or consideration of product Among the products which we offer Architects Architects any Johns Manville in connection with this service are ACOUSTICAL TREATMENT Proper acoustical conditions imposing no limitations upon the Architect either in form or decoration may be secured in new and existing buildings by the use of Manville Nashkote Sa^-acousticTile or Nashtile types of Acoustical Treatment applied under the supervision of our Acoustical Engineers Rigid Asnestos Shingles Various types of roof shingles in colors textures widths plucknesses that will adapt themselvethemsselves to dillerent architectural treatments and assure you of a root that is proof against fire and severe weather conditions INDUSTRIAL FLOORING An asphaltic mastic flooring prepared to meet the particular conditions encountered on each individual project It apples apples while hut and is designed to stand heavy triicking and other severe conditions found in factories machine shops laboratories etc. WATERPROOPING and DaxP PROOPING JM Treatment for Waterprootiny -- where the presence of water sudue hydrostati hydrostati pressure and Damp proofing or absorption found on each where moisture vidoe to capillarity are designedidetsignoedito meet the conditions individual project Asphalt ShinGLES Insulations for All Traptrature Coupl : TIONS Quality roofing materials a moderate price finished in colors and blends that are pleasing and effective _ fations Manville lang experience in the field of anmis fations has enabilsk enabilsk us to develop materials to meet all Asseiros and Rag Felt Roti Roorines conditions of s^ vite ajad all temperatures from the highest durince rupes to the lowest sub zera service | Roolings of various weights and colors for use as linished roots or for use under Asbestos shingles slate or tile Asupstos and Rag Frut Built Rooring A complete line of smooth and slag surfaced bonded roolings See Architectural Service Bulletin No. 1 Juformation on naterials not decribed in this Bulletin No. 2 Par A1 available on request request UnderGrouSD SYSTEM OP Issulation Issulation under A lughly efficient system of insulation for ground steam distribution lines miscellaneous miscellaneous pipes ducts etc. TRANSITE SHEETS FLAT OR CORRUGATED Composed of Asbestos fibres and Portland cement formed under hydraulic pressure into monolithic alicets of great strength and rigidity Transite is fireproof and will resist the action of rot rust and Corfusion FLORIDENT STONE - This is a natural stone quarried in Florida having unusual color and interesting texture is adaptable to interior and exterior wall treatments as well as flooring COLD MASTIC FLOORING Manville Child Manic Flooring is a compou tion of asbestos libres mineral pigments and specul mineral guins which is furnishe in plastic consistency to be traveled over ammonth firm surfaces Thus theaseing is practical wherever a durable comfortable weare ing surt we moderate cost required It available in ited Brown Tan Green and Black colors J.M. The Flooring A A decimative flooring of great durability which is fire- resistant waterprost stainproof resilient and com- fortable is avalible in Red Mahogany Tan Tey Green Olive Green Blue Gray and Black tiles with which various pleasing effects may be secured STRICTURAL Insulation Johns Manville bisulating Bard Plaster Lath and compressed Ronfinsul are imposed of wild fibres into boards of cleient cleient insultu insultu g spuilities combined with structural strength Jasistir^g Board as used an sheathing or as base for plastic paint and painted treatments Pla ter Lath 15 used as a plaster base Roofinsul ja us I under roohing materials HOME INSULATION Johns Manville Home Insulation is forced under picumitic pressure between the wall studding of new and existing buildings thus forming a complete blanket of ellitetit anissalation around the entire buildang The insulating material is Rock Wool which is fire and vermins proof and will tint disintegrate Tins is the most ethuient type of house insulation Aspestos ImoNY Adestos Ebony is highly developed developed electrical insur litor impervionis to moisture and possessing high dielectric strength is particularly suitable for switch and panel boards etc Cility for Concrete of A special grade ot diatomacenis milica of high purity and extrenie fineness The ad lition Jolins Minville Celite for Concrete Concrete gie itly improves the workability internity and general quality of mortar stucco and concrete mines PRODUCED J-M83 27 FLAT TRANSITE Manufactured 1930 Manufacturing Plant Nashua NH Met following specs GE # D16E1-87 Westinghouse PD17112 U. S. Coast Guard Certificate of Appro- val 164.009 % Asbestos 36-48 Labeling began 7/1/70 PRIVLEGD PRIVILEGED PRIVILEGED PRIVILEGED PRIVILEGED PRIVILEGED PRIVILEGED PRIVILEGED PRIVILEGED CORRUGATED TRANSITE Manufactured April 1975 Manufacturing Plants 83 Manville & Nashua until approximately , Wauke 1950 wh Nashua omitted In 1953 added Pitts burg CA. 1964 eliminated Manville 1965 eliminated Waukegan & Nashua *** & only manufactured in Pittsburg Met following specs Navy 7YG Federal SSB750 ASTM 22155 and C22161 *** Bill Diedrich at JM Sales advises me that the Corrugated TRANSITE manufactured at Pittsburg CA was a laminated version available only on the West Coast and that all other corrugated was purchased from National Gypsum from approx 1965-1970 and from GAF formerly Ruberoid in St. Louis from 1970 until 1975 Labeled approx 1970 a ne ee ACOUSTICAL PANELS Manufactured April 1939-1 ESS Manufacturing Plant Nashua NH Met following specs Federal 118 Class A - Incombustible 118b under Federal Spec ae ee ee we ee a Product Performance Testing on above done by Materials Evaluation Section of Research & Development Dept. oT barriers TRANSITE panels were used for both interior and exterior buXiElSdKiIng The Product Directory gives the following characteristics and will not resists vermin will not rot or rust noncombustible actually corrode treat- with age requiring no preservative bmeecnotmeasndstisronogneer ofandthetoumgohsetr enduring building materials ever developed ee Asbestos Fiber Chrysotile Technical Bulletin Bulletin Asbestos Sheet Asbestos products represent the largest market for of asbestos Sheet products have found a the world's supply roofing siding variety of uses in the building field inclutdoinwger fill industrial and bulkheads curtain wall cooling board and decorative trim They are available in insulating sheets The shingle and siding products flat or corrugated textured and painted but they may also be integ- are usually from a small shingle inches x rally colored Sizes range 12 feet Thickness of asbestos inches to sheets 4 feet x to cement sheet products usually vary from inches inches Purpose of Asbestos and then through embossing rolls and trimming and cutting wheels To make small shingles and the like dye cutting be used If corrugating or repressing is to be done it is may at this time prior to autoclave or normal cure a Another wet process makes use of a mold and a hydraulic The same type of slurry is made up and discharged pinrteosas mold The bottom of the mold and sometimes the tAops also will have a screen through which water can pass and the mold is closed water is squeezed out of the slurry When the sheet is ejected from the through the screen and is ready for the cement mold it has the required density to curing cycle These sheets are msuorlfdaecde ignrtihnidcktnoespsreosviudpe a inch and are given final The addition of asbestos to cement products imparts flexural properties much greater than those of unreinforced Because asbestos is inorganic and inert it con- concrete and fire resistance of these prod- tributes to the durability virtually unaffected by ucts Asbestos products are smooth finish cure is usually at 125-150 psi saturated steam for Autoclave of two weeks 16 hours and normal cure is for a minimum under saturated moisture conditions After drying the prod- uct may be painted the atmospheric environment Formulations Asbestos products can be cured in a short period of in an autoclave or over several weeks in a moist atmotsipmheere For autoclave curing silica is used in the formulation to react with the free lime formed Autoclave Cure Asbestos -12-25 Cement -45-54 Normal 12-25 75-88 perforated DRY PROCESS make some shingle type prod- The dry process is used to mill or ucts The asbestos fiber is opened in a hammer similar device and dry mixed with cement waentdtedsilbieclta Tahnde dry mixture is metered onto a movingrollers to remove passed under compression the material and it is much of the air Water is sprayed on fully compressed under rolls If surface granules are more before this last compression The to be used they are added and cutting to size is last operation prior to rough rough trimming Silica -30-34 Manufacturing Process WET PROCESS Several which represents the major production The wet process used to produce both method for asbestos sheet is flat sheet and corrugated sheet The asbestos fiber is usu of a hammer mill or wet ally opened dry in some version It is mixed with the damp in a rod milalndorwaKtoelrleisrgaadndged for wet mixing The cement and silica flows into the vats with a solids content of 5-7 percent salnudrryis picked up on the screened surface of the rotating submerged cylinder molds As the molds emerge partially of wet asbestos is left on the from the slurry a layer screened surface This is transferred to a felt passing over of the molds and additional water is squeezed out by the top will be in series and succes- a couch roll Usually 2 to 4 vats stock are transferred to sive layers of the asbestos water from the felt Suction boxes are used to remove more the felt and stock and transfer is made to a large ac- roll The width of the vats determines the width of cumulator diameter of the accumulator roll deter- the sheet but the rolls are rarely mines the length of the sheet Accumulator than ft in diameter to give a 12 sheet more the required thickness layers are formed on thtihserowllidttohgiavned the sheet is manually A cut is made across stripped off the rotating roll onto a transfer roll conveyor The sheet may be partially dried by passing under heaters to pass under an embossing roll for a few days nail holes are punched in the After air curing Final curing then shingles and they are cut to exact size tech- takes place After drying paint is applied by spray niques Recommended Fiber Grades 4T30 5K30 6D30 S6D30 6D24 6D20 S6D20 7M13 5 of fiber which are moderately fast filtering are Crudy grades Group 4 and fibers best suited for use in the wet process 5 and 6 are usually used in corrugated sheet while Group treated fibers are used in flat sheet S treated fibers are for improved drainage CAUTION Asbestos Fibers - Avoid Creating Dust Contains Serious Bodily Breathing Asbestos Dust May Cause Harm accepted of Manville Chrysotile Asbestos Fiber repre- The physical or chemical properties with test methods and are sent typical average values obtained in accordance as a technical service and subject to normal manufacturing variations They are supplied district office to assure to change without notice Check the Manville are subject PRODUCED PRODUCED current information PRODUCED PRODUCED PRODUCED PRODUCED PRODUCED JM - 83 Manville JM Denver Asbestos Fiber Sales ' PO PO Box 5108 + Colo 80217 Asbestos Canadian Manville Co.Ltd * Fiber Division 303 770-1000 PO Box 1500 Asbestos Quebec CanaJITd3a N2 819 879-5433 120 Lithe in USA 109A HIA HIA HIA Tech Tech Tech 11/28/78 11/28/78 11/28/78 RECOMMENDED WORK PRACTICES FIELD FABRICATION OF - PPat ANTEC aes Peary sake Ta ane a, SBS) a v Hestdhay ht Cadh eS AIA North America Asbestos Information Association PRODUCED JM - 83 Contents Introduction Asbestos and Health Summary of OSHA Asbestos Standard Products and Operations Recommended Work Practices Shipping Receiving Handling & Assembly Cutting Circular Saw - Flat Sheets Circular Saw - Corrugated Sheets Handsaw Handsaw Hand Clippers Scoring Knife Drilling Power Drill Hole Cutting Sabre Saw and Cutouts Nibbler Rasp Vacuum Cleaners Housekeeping and Waste Disposal Recommended Work Practices Equipment List Equipment Suppliers NM NM 1 5 6 7 S 9 10 11 12 13 14 15 16 17 18 19 20 PRODUCED JM - 83 Introduction Introduction Introduction The Occupational Safety States and similar laws were enacted to ensure and Health Act in the United in Canada and other countries so far as possible every worker a safe and healthy work place This reaching It covers millions of legislation is employees and nearly every employer To assist in assuring compliance with these laws the asbestos industry is disseminating information regarding the potential hazards of exposure to airhorne asbestos and the means of reducing such potential hazards through good work practices Good work practices is what this booklet is about The recommendations that appear on the following pages were developed through study and field testing They are intended as general guides to achieve safe and healthful job site conditions when working with asbestos field conditions will vary A sheet products Since adherence to these work practices will not necessarily guarantee compliance compliance with national state or local regulations Questions relating to compliance should be directed to appropriate regulatory agencies The Asbestos Information Association believes this will help and crews engineers superintendents contractors to understand and explain procedures for safe handling of A sheet products booklet foremen the PRODUCED JM - 83 Asbestos and Health [ As aro identified Airborne aware as a possible asbestos fiber has been health hazard But like the automobile electricity and rays there are harmful ways to use potentially harmful things Generally asbestos A sheet products contain less than 400 asbestos The asbestos fibers are not free but encapsulated or locked the cement binder like reinforcing rods in concrete The distinction between free and hound asbestos is extremely important First of all it determines the probability of fiber release which in turn directly relates to the probability of risk More importantly it explains clearly and simply why A sheet is a harmful use of asbestos Experience has shown asbestos Just is the that only minimizing exposure effective method of to airborne preventing asbestos diseases During the use and handling of A sheet the only time that fibers may be released in significant quantities from a health standpoint is during fabricating operations when sufficient mechanical energy is applied to the product to literally tear the fibers from the cement binder Recommended work practices are the best assurance for controlling airborne fiber generation and thus provide exposure safeguards for yourself and your employees 3 Summary of OSIL Abestos Standard Under the current OSHA standard for occupational exposures to asbestos it is the employer's responsibility to assure that exposure of employees to airborne concentrations of asbestos fibers does not exceed the following permissible exposure levels a Eight weighted average Two fibers longer than 5 micrometers per cubic centimeter b Ceiling concentrations Ten fibers longer than 5 micrometers per cubic centimeter In October 1975 OSHA proposed a revision to the current standard which would reduce the eight hour time weighted average exposure to 0.5 fibers per cubic centimeter of air and ceiling concentrations to 5.0 fibers per cubic centimeter OSHA specifically excluded the coverage within that proposal construction industry from In their notice OSHA stated that a separate standard would be proposed to cover workers who handle containing products in the construction industry The work practices recommended in this booklet are based on data for peak dust concentrations representing short time periods involve of maximum exposure Field fabricating operations C cheet are noramily infrequent and of short duration Using these recommended work practices which will maintain fiber lovela below allowable ceiling concentrations it in improbable that field personnel would be exposed in typical working day to levels exceeding the current CSFA eight weighted average permicaiste erposure limit tren Products and Operations flat The following work practices are applicable to flat and corrugated C sheet products Operations to which these work practices apply include Shipping Receiving and Handling Cutting Drilling Hole Cutting Housekeeping and and Cutouts haste Disposal Equipment used with these work practices is available ry from the sources shown in equipment list list page 20 or through the NA PRODUCED JM- 83 Shipping Receiving Receiving Handling Handling and Assembly 4 A sheet is shipped clean from in pallet loads using shipping the producer and the customer the factory generally methods acceptable to All unloading operations should be carefully performed to avoid sheet damage Pallet loads are normally unloaded by fork truck Small shipments may require manual unloading PRODUCED JM PRODUCED - Cutting 11at Sheets Circular Saw mat, ee n prea fcc oe PAT. TASES r4,x = gH tet Bi a OI Hea Ye a 7 * yep: 2 Aparninal CS rAd nw eee aRle taiN aad wegen tet ta atrgg TOMAS be te POEL, ie 4 UNG oko rate Tay head asen ieee g Be be ae VSS SN idole Betton out eardy Pad ae tt re PNT aa" Vy . Pigg REP sah 2 tu . a owe a a aSeTs Le vs ee wes Circular Saw With Dust Collection Hood Circular saws should be used only when equipped with the specific dust collection hood pictured above Exhaust ventilation and dust collection is provided by the vacuum page 19 ) or cleaner described in the equipment by an equivalent unit with similar list performance and filtration characteristics The combination of hood and vacuum source is highly effective in capturing and collecting the particles and fibers generated by the cutting operation Saw operating techniques are those normally employed No special procedures are required except adjustment of the lower hood section to suit thickness of sheet being cut Hood design requires the use of abrasive discs masonry blades with the saw PRODUCED PRODUCED Cutting - Corrugated Circular Saw Sheets q we t eee DAG dwihtngy area fad MOM aerbas eee a terres R eee - PRnR k Me pg Geptay OWY GES et age . \v Circular Saw With Dust Collection flood Circular saws shoulbde used the specific dust collection Exhaust ventilation and dust only when equipped with hood pictured above collection is provided by the vacuum page 19 ) or cleaner described in the equipment by an equivalent unit with similar list performance and filtration characteristics The combination of hood and vacuum source is highly effective in capturing and collecting the particles and fibers generated by the cutting operation Saw operating techniques are those normally employed The use of an abrasive disc should be satisfactory for normal cured sheet however for autoclaved sheets 1 diamond bladies recommended The hood desien depends on rubber Lingers to seal the cuttEDA one 101 sheets with exceptionally deep 01 irregular shaped corrugations the finger configuration may have to be modified PRODUCED JM - 83 Catlins | Handsaw Handsaw Handsaw Norcem Handtools Handsaw This is a handsau couipped with a carbide blade designded esigned for cutting asbestos sheet is limited by its slow cutting Practical speed It use of this is most useful in operations where cutting is infrequent and of short duration Because of the slow cuttingspeed saw operation generates coarse particles not require dust with few airborne fibers Its use does collection equipment for compliance with present exposure limits PRODUCED JM - 83 Cuttine - Flat Sheets Norcem Handtools Hand Clippers These hand clippers are designed for cutting sheet matorial up to 1/4 in thickness Practical use is limited by slow cutting speed It is most useful in operations where cutting is infrequent and of short duration The few clipper cutting action generates coarse particles airborne fibers Its use does not require dust with collection equipment for compliance with present exposure limits In - Cutting Hat Sheet Score Snap Knife Norcem Handtools Scoring Knife The scoring knife can be used with sheets up to 1/4 in thickness However it performs best with sheets 1/8 and 3/16 thick The sheet is clamped in place between upper and lower guide bars on a work table or saw horses and scored repeatedly using the upper bar as a guide for the knife After scoring the sheet is hand snapped along the score line This cutting procedure generates little dust and few airborne fibers Its use does not require dust collection equipment for compliance with present exposure limits PRODUCED J-M 83 ing - Shrouded Power Drill rf ye onts x bg oe Phases ( sjf Letigaeat!, iN qv + Vat, . aay ws ae + 5 oe, oe <a Os ONS wR So Salt fges e 7 Piel 2 2 IN BR KEu ld i be wimak a: y, fed n Cah ) oe * Benz ae . eaa? SS Ma a3 - a ae ae inh Lay vitae ft; WhahLS eT hey He bY eek g PEP : ogeh sire 8 fp toni wrhe tate yeh : * be. Peruse OF tat or ars ren pIe A LOAMNi.s Cag Sore CAS nab Coe! anaes Drill with Dust Collection Hood Drilling of small holes 1/4 or less on vertical surfaces or downward can be done without dust collection equipment and in compliance with present exposure limits Drilling of larger holes dust collection equipment and drilling on the drill overhead requires in order to achieve compliance Equipment includes a hood Cape Universal Building Products Ltd. and vacuum cleaner to provide exhaust ventilation and dust collection Vacuum cleaner > should be unit described in equipment list page ) or id equivalent with similar performance and filtration characteristics Drilling techniques are those normally employed No special procedures are required PRODUCED JM - 83 Hole Cutting and Catouts - Flat Sheets Sabre Saw Sabre Saw with Dust Collection Hood Sabre saws should be used only when equipped with the by specific dust collection hood pictured above ventilation and dust collection is provided Lxhaust the vacuum cleaner described in the equipment list page 19 ) or by an equivalent unit with similar performance and filtration characteristics Saw operating techniques are those normally employed No special procedures are required PRODUCED JM - 83 Hole Cutting Cutting and Cutouts - Nibbler _ ed Norcem Nibbler with U.S. Adapter Detached This tool attaches to a hand power drill and cuts by breaking nibbling relatively large sheet The nibbler cutting action pieces from the generates coarse particles with few airborne Tibers Its use does not for compliance with require dust collection equipment present exposure limits The nibblea aa be used up to 3/8 thickness for cutting C sheet materials PRODUCED JM - 83 Hole Cutting and Cutouts - Drill and Rasp A simple method of making cutouts is to drill around the edge of the opening to be cut and the material to be removed with a hammer A to dress or bevel edges of the cut small holes knocking out rasp is used This procedure for compliance does with not require dust present exposure collection limits equipment PRODUCED JM - 83 Vacuum Cleaners Nilfisk GA Vacuum Cleaner A suitable filtration vacuum cleaner with proper performance and characteristics must be used Requirements are Vacuum Airflow filtration system GO W.C. 180 CFM Recommended by the manufacturer for use with containing dusts The AIA that their can provide a list of manufacturers who claim unit is designed for use with asbestos dusts PRODUCED JM Housekeeping and Waste Disposal Housekeeping is It operation created by the by an essential is even tok of more good good part of any safe construction essential when airborne dust housekeeping has the potenialpotential housekeeping for harm to exployees and others EQUIPMENT All external survaces of equipment should be that might if maintained free of dust accumulations dispersed create asbestos fiber concentrations above permissible exposure limits WASTE DISPOSAL Asbestos dust chips and cuttings from the field operations described in this booklet must he collected in a manner that will not contribute airborne asbestos dust to the atmosphere Locse material should never be dry coept When vacuum equipment is available it should be used Water or other dust suppressants should be applied in those circumstances where sweeping is unavoidable DO NOT BLOW RASTE MATERIAL WITH COMPRESSED AIR No visible emissions to the atmosphere may result from the collection processing packaging transporting or of containing material Wastes deposition any in accordance with the must be collected and disposed requirements of the Sederal Environmental Protection Agency* Copy of regulations available from MLA PRODUCED JM - 83 Too fol r ts he Fabrication of A Sheet Abrasive Disc Saw Sabre Saw Drill Vacuum Cleaner Nibbler drill use with power Handsaw Scoring Knife Hand Clippers Hand Rasp inch Rockwell Model 368-1 or equivalent use only with hood Rockwell Model Carbide Blades No. 12390 or with hood 548 Bayonet Saw - Rockwell Type equivalent use with 6T only inch Rockwell Model 7501 or equivalent use with Cape Universal Building Products Ltd. Portable Drill Nozzle Kit - Pat App 59390 Nilfisk Model GA73 with Nilfisk foot No. 106298 inch ) hose Nilfisk foot inch ) hose ext No. 106207 Nilfisk Nilfisk Nilfisk 3 microfilters No. 613274 3 HEPA filters No. 115120 Container Frame No. 017101 Hose Adapter - in X in X in inch ID hose - Kana Flex 150 cl or equivalent Norcem Danklip No. with drill adapter 80847 , use Norcem Eclipse No. S0810 Saw Eternit Sag Blades - Norcem No. 80811 Type Ekstra 56-10 Sagblad Norcem Iternit or equivalent Risse Kniv No. 80800 Norcom ternit Saks No. 80805 Many types are available in all local areas PRODUCED JM - 83 Equipment Suppliers Circular Saw Drill Sabre Saw Hose Scoring Knife Vacuum Cleaner Circular Saw Hood Drill Hood Nibbler & Adapter Hand Saw Hand Clippers Hose Adapter Local Supplier Nilfisk of America 201 King Manor Drive King of Prussia PA 19406 or Other vendor of suitable equipment XYZ Co. > Prepared by North America Asbestos Information Association Suite 500 Crystal Square 4 1745 Jefferson Davis Highway Arlington VA 22202 703 979-1150 979-1150 America PRODUCED JM - 83 Johas ^/enville ^/enville - ^/envile ^/envil e Johas Johas - ^/enville ^/enville AIA TECH Su mem pin Poy pero wie ... La - ae ue La ot 1-4 ne rere Sn ea L mm . vay one . we "9 D. R. Lucy - 2-12 From DJel M. F. - Trosper R . Copics See end of correspondence Date November 10 1977 Subject BUILDING SYSTEMS DIVISJON MINERAL PANEL WALL PRODUCTS INSTALLATION DETAILS AND TECHNICAL DATA Attached please find the draft for the Fabrication and of Asbestos Cement sheets per your request Installation in the literature It will undoubtly require editing for use therefore it is supplied in double space format M. F. Trosper dlf CC R. H. Bengtson G. T. Edmonds J. V. Magee R. G. Ducey E. M. Fenner R. Carter J. Lee D. Kelleher J. Reis ~ 2-12 - 2-12 - 2-12 - 2-12 - 1-06 11 1-06 11 2-12 1 2-16 1 2-16 N. Walters - 1-04 W. Helmick - D J. E. McCorkla - R E. G. Long - D F. Bodycomb A. Musz - D - D J. Iloehler - D PROUDERD FABRICATION AND INSTALLATION OF ASBESTOS CENENT SHEETS INTRODUCTION The construction Industry has experienced in recent years standards effecting vertically many health and safety all phases of the job site In addition to the electrical the scaffolding the ladder and the personnel equipment standards has come another standard exposure to free asbestos fiber Construction and manufacturing operations which produce significant amounts of dust are one at a time Asbestos laden all being investigated dust was one of the first with coal dust its predicessor In the future will undoubtly be controlled silica containing proudcts with some type of standard It has been shown that any dust in the respirable size range 5-50 has detrimental effects on the human body and fibrous bodies in infections of various lung this size range lead to tissues which can with long latent periods develop cancerous tissues It should be noted that smoking which breaks down certain will increase the possibility biological defense mechanisms of pulmoncosis lung infection . PRODUCED JM - 83 -2- Having become aware of the above situation Industry has developed various tools and techniques which when properly implemented significantly lower employee exposure to construction dust While the fabrication of many asbestos fiber reinforced products will release sizable quantities of free asbestos fiber it must be noted that proudcts and processes which lock in or bind the asbestos fiber and prevent it from being inhaled or ingested do not present a health hazard Since asbestos cement sheets asbestos reinforced plastics and asbestos containing fluids all physically hold on to the fiber handling such materials presents no health hazard It is not the handling of asbestos containing products which we wish to examine but rather the fabrication question FABRICATION OF ASBESTOS CONTAINING PRODUCTS First may we consider some basic rules and concepts about the fabrication of asbestos containing products 1 Keep visible dust at a minimum 2 Remove or abrade away the least material possible i.e. usage of a 1/8 in thick dry diamond blade physically removes one hald of the material a 1/4 in masonary blade abrades 3 With thin sheets 3/16 ir and less in thickness PRODUCED JM - 83 -3- score and break the panels using a 2 in x 4 in restraint see Appendix 4 With thin sheets certain types of nibblers are available for sizing the sheets see Appendix 5 Wet fabrication has many advantages from a dust control standpoint but effective removal of the sludge produced must be considered must be rated dynomically rather than 6 Vacuum systems statistically and after a reasonable amount of residue has loaded the filter media 7 When possible fabrication should be performed which results in chips of material rather than dust being produced 8 In general all tools must be designed that one man can effectively work with it that one man can transport the unit and that the power requirements should be no greater than 110 VAC and 30 AMP Wet cutting will be considered reportly as a portable plant We could continue this list in greater detail but may we consider each operation seperately as follows DRILLING Drilling OF ASBESTOS CEMENT SHEETS attachment holes is the most common PRODUCED JM - 83 operation performed on asbestos cement sheets As such there are several general concepts which can be noted 4- 1 Sheets should be drilled flat with allowances for dust collection see below 2 Depending on the number of holes to be drilled several types of drill are available a Carbide tipped drills - Advantages Long durability Disadvantages Produce fine dust Tip and shonk diameters are often different b High speed - split point drills Advantages Produces chips at low speeds faster penetration accurate holes Disadvantages Limited life however field use of a file extends life In general when ever possible the use of the split point drills is suggested in conjunction with a drill capable of 50-100 rpm This combinaiton results in reduced dust levels and faster production of mroe accurate attachment holes Drilling must not be performed without the use of an acceptable vacuum system or a fabrication system For vacuum protection use of a Cape Universal drill shroud or similar with a vacuum unit capable of 3/4 in to 1 in of Hg pressure dynamically measured at the end of a 20 ft hose with a 5/8 sq in orfice at the end of the hose Provision made for the vacuum removal of any should also be PRODUCED residue produced JM - 83 under the sheet being fabricated One possible solution is the use of a vacuum trough below the drilling systems proper collection filtration and disposal techniques must be used For decorative sheets adequate rinse and cleaning of the fabrication site must be allowed for in order that staining of the sheets does not occur PRODUCED . JM - 83 nozzle Portable Portable Portable Portable Portable Portable Portable Portable Portable Portable Portable Portable Portable nozzlenozzle nozzle nozzle nozzle nozzle nozzle nozzle kit kit kit kit kit kit kit k kit i kitt 2 pat app 52330 Approved by the Asbestosis Research Council Operating instructions Power drills adapted with the kit do not require special operating procedures The design of the kit allows the drill bit to be accurately positioned on the surface to be drilled 1 and as griling takes place the crill nozzle compresses to allow the drill bit to proceed 2 The nozzle can be adapted to accommodate the Teks fixing system advice obtainable from Cace Universal Building Products Limited screw PRODUCED JM - 83 Averbly detail OIE orn UL 4 SPEC 2 DEUXIL 3 ey fd fe gi ES 3 ee Components Assembly instructions instructions instructions I Adaptor A to suit Black and Decker 8in or 16in chuck an Wolf EG 2C 4in chuck | Wolf EG 230 16in chuck Stanley Bridges XL 325 and XK series 2 Adaptor B to suit Wolf Sapphire series 3 Drill nozzle qd Hose piece . 5 Jubilee cup 2 no ' 6 Retaining strap with adhesive backing 7 64in drill bit 8 Countersink attachment ) Open ended cap for horizontal suriares ceilings 10 Conical cap for vertical surfaces walls Select adaptor 1 or 2 to suit drill Fit to neck of dril and secure with three trun screws Fil drill nozzle 3 to neck of adaptur ensure that exhaust outlet is at top and tighten llange screw Connect hose piece 4 to exhaust outlet and secure with jubilee chip 5 Remove paper from adhesive backing of secure hose to cril with strep Insert hose piece into exhaust unit hose second jubilee clip attachment and fit Assemble into chuck drill and Tighten chuck by inserting key through nozzle Select cap 9 or 10 and fix to retaining strap and and secure with countersink aperture in nozzle using twisting action Cape Universal Cape Universal Building Products Limited Exchange Road Tel Watford 34551 and 41331 A member of the Cape Astestos group of companies Watford WD1 7EQ PRODUCED JM - 83 Cutting of Asbestos Cement Sheets By frequency of job function sizing of flat sheets of asbestos cement ranks second to drilling Nost jobs of A sheet are designed to minimize the number of field cuts or the sheets are ordered presized from the supplying factory However almost every job requires some cutting be done for various openings or to finish out a horizontal run of panels A few jobs rare though they are requires for one reason or another that every sheet supplied be cut in order to complete the application A job with few cuts required is usually done using a silicone masonary blade installed on a 7-1 in to 8-1 in circular saw A silicone blade will produce a 1/4 in wide cut inwhich the abraded material produced is finely divided during fabrication Control of this finely divided dust is nearly impossible if the material is allowed to escape the proximity of the saw Capture of the dust in a concentrated form is essential if low asbestos exposures are to be acheived High velocity - low volume HV capture techniques are idealy suited to this situation PRODUCED _ JM - 83 urce so vacum no with Saw Masonry 510 Model Rockwel a using CORSPAN up. 1/2" 1 pick into the cut to source source -3 26 l.  . SY Sard al wt = amare BTS U eleSyne ce Ti, Batters Baas EAD 4 Fy Ot pried HV dust control increases insure immediate removal of asbestos laden dust as it is produced However care must be used in the design of the attachment points of the various orfices on and in conjunction with the now For example as the depth of cut is changed so is the particulate path above and below the sheet being fabricated As shown above the angle with respect ot the sheet of the primary particulate vector Pp & P'p changes drastically for an equal diameter blade when the depth of cut is varied The position of Pp determines the position of both a primary orfice and a secondary orfice on the saw shroud Changes in the Ps effect dust control efforts below the sheet effective dust control in the field cutting vectors For position PRODUCED JM - 83 A with a sheet of plywood or low density foam acting =e as a deflection shield has proven desireable This position in conjunction with a properly designed exhaust system designed along LV principles has been tested repeatedly below cc Ffibers centimeter Certain saws however are easier adapted to exhaust shrouds For example a vertical adjustment saw has to contend with the above situation for vertical adjustment while a type adjustment saw rotates the geometry of the exhaust shrouds This rotation can induce drastic changes in the air envelope as shown below PRODUCED JM - 83 METHODS OF ENGINEEREDENGINEERED DUST CONTROL SYSTEMS PORTABLE ELECTRIC ROTARY POWER SAWS SAWS SAWS I. II Use dust control systems shown below Spec A or Cape Asbestos shroud kit Spec Do all cutting on M design vacuum box 6 as per Spec No. 1 or cut into 1/2 plywood ASBESTOS SHEET PRODUCT SSS -DUST SURFACE = FROM -DUST FROM y cm SURFACE CUT OVS me * rn C CECHBLADEGU GUAARRDD MASONRY WHEEL 3800 TO 5600 R.P.M. tenia SS! VACUUM | ethan = SS St. ) s @ ) DUST FROM -e BOX 8 BOTTOM SURFACE CUT OR /ALTERNATCEUT INTO 1/2 PLYWOOD SHEET THIS VAC.VAC.ti on THIS -LENGTH TO SUIT Ye TO 20 Ft | { VACUUM UNIT LOW VOLUME & HIGH VELOCITY SPEC SERIES G CAPE ASBESTOS SAW SHROUD KIT SPEC.A 2 PRODUCED JM - 83 Q.D. PICKUP TUBES WELDED (2. ny 1 3/8 VACUUM HOSE SPEC - DETAIL 3 . 25 - . 1.D.VACUUM 1.D.VACUUM HOSE PRODUCED FOR PRODUCED PICKUP - 83 , PICKUP FOOT fi 3AW BLADE SPEC A DETAIL 4 26 oo PICKUP WELDED TO SHIELDING , ADDITIONAL SHIELDING REQUIRED IN FRONT SIDES OF SAW GLADE . fag?0 ou PICKUP FOOT MOUNTED TO SHIELD BOTTOM OF FOOT FLUSH WITH BASE 1/4 FACE OF PICKUP FOOT TO CDCC OF SAN CLADE ~ PRODUCED JM - 83 UST ot ms we t Bs ym 4 mbes ? wet ON Reyer Ot eo en UST UST c raO r d Me 1 SLABUT SLABUT Universal Universal Universal Universal Universal Cape Universal Cape Cape Cape Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal Universal . Dust DDustust Dust Dust DusDtust Dust DustDust Dust Dust Dust Dust Dust Dust Dust Dust Dust extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction exterxatcrtaicotnion extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction extraction shroud shroud shroud shroud shroud shroud shroud shroudshroud shroud kit kit kit kit kki itt for for for for for thethe the the the the the the the the HD HD HD HD HD HD HD HH D H D D 125 1215 1215 1215 1215 1215 1215 1215 1215 1215 1215 1215 1215 portable portable portable saw portable portable portable portable portable portable portable portable portable portable portable portable portable saw saw saw saw . portable Approved by the Asbestosis Research Council shroud shroud The saw shroud has been tailored to fit the Black and Decker 9... portable circular saw and used in conjunction with approved industrial cust extraction units A list of such units is included in the ASBESTOSIS RESEARCH COUNCIL Control and Safety Guide No. In addition to its use with Ascastos based materiais the saw shroua is also suitable for a wide variety or ciner materials Operating instructions The material to be sawn should be placed on a wooden base = preferably ... plywood if considerable cutting is to be conel Spanning the whole longin of the low cut and the place canth adjusted to inat cuts through the material with miniraum miniraum PRODUCED cut into base board This prevents aust from failing calow the PRODUCEDPRODUCED sow cut and concentrates the extraction extraction to the shroud enclosing JM 83 the upper par of the blade where the dust is grown off via PRODUCED - lightweight hose to the exhaust unit the saw tyre should be shroud is to be used above 1depth of cut taken to unsure he argue catat for the Assembly instructions SPEC SPEC A DETAIL 3 29 Components illustrated overleaf 1 Shroud 2 Hose harness comprising two hose pieces and Y connector - 3 Jubilee clips 4 of No 1 and 1 of No 2 Dismantling saw Reassembly with shroud Remove bolt 4 outer clamp washer 5 saw blade 6 inner clamp washer wing nut 7 colt 8 guard stop 9 wing nut 10 snce 11 two retaining screws 12 lever arm 13 screws 16 17 and finally main guard 18 by carefully tapping free with hide faced hammer Should motor unit also be withdrawn ensure carbon brushes are correctly positioned before reassemoly Fit saw shroud 1 to guard 18 and reassemble in reverse order ensuring that all screws are fully tightened Omit lever arm 13 and retaining screws 12 Where necessary lift sproud to gain access to screws To tighten screw 15 insert screwdriver as shown in crawing Ensure that shroud is fitted inside lip of spice when replacing saw place Connect nose harness to shroud Connect hoses to Y piece secure all connections with Jubilee clips An additional cup is included for coupling the unit to the cust extraction nose Cape Cape CCapeaCpapee UUnniivveerrsseell PRODUCED Pat . a app pp JM - 83 No. No. 56586/70 -10- Vacuum Units and Systems A discussion on dust collection techniques would be incomplete without considering the vacuum producing unit Many units have been examined resulting in the following minimum specifications For circular saws 7-1 in - 8-1 in blade diameter Capability of producing 2 in Hg 27.2 in H Odynamic pressure differential at the end of a 2 in diameter hose 20 ft long with a 5/8 in diameter orficien a plug For drills Capability of producing 1 in Hg 13.6 in H2O dynamic pressure differential at the end of a 1-1 in diameter hose 20 ft long with a 1/2 in diameter orfice in a plug Of course the vacuum specifications should not be measured without first loading the filter network by cutting at least 12 linear ft of 1/4 in board with an abrasive disc or drilling 50 holes of 1/4 in diameter in 1/2 in board using a carbide bit In addition the vacuum unit should be capable of capturing 0.5 micron particles at the final filter Power requirements in excess of 110 VAC and 30 Amps are unacceptalbe in the field PRODUCED JM - 83 E JM Manville Research and Development Center E Report No. E411 379 Date March 16 1979 Title FIELD EVALUATION OF CORRUGATED SHEET SAW SUMMARY for the dust free fabrication of corrugated A circular saw asbestos cement was evaluated on the job site February 26 in Denver Colorado 1979 This at the Manville Research Center and record workman's trial was done to generate field dust counts reaction and comments to the tool of Centennial Air Conditioning The saw was used by Mike Geyer at Denver Research refinishing the cooling tower four foot wFhaobrw ia cs ation consisted of cutting four one foot by All work for a total cutting of sixteen linear feet panels was done outside and personal samplers were taken worn by Mike The asbestos Geyer counts and the author with one area sample of M Health Safety and Environmental taken by Stella Gaburo and 0.0 cc respectively Department were 0.0 cc 0.05 cc to be compared to The samples taken were peak samples and are an OSHA peak standard of 10 cc sheet saw and Nilfisk GA vacuum Performance of the corrugated He suggested all sites was judged to be excellent by Mr. Geyer should be equipped with cutting asbestos containing materials the workmen acceptance tools of this type His belief was that of these tools would be good It is found recommended and samples that a job taken even with more severe conditions be though counts from this trial were well within acceptable limits Contents Summary only Reported by ARBANAN ARBN ARBANAN ARBANAN G. R. Bauman Asbestos & Mineral Technology lkh W. C. Streib Director Mineral & Filtration Technology PRODUCED JM - 83 JJMM Manvil e Manville Research and Development Center E Report No. E411 Date March 16 1979 Title FIELD EVALUATION OF CORRUGATED SHEET SAN SUMMARY A circular saw for the dust free fabrication of corrugated asbestos cement was evaluated on the job site February 26 Colorado 1979 This at the Manville Research Center in Denver field dust counts and record workman's trial was done to generate reaction and comments to the tool The saw was used by Mike Geyer of Centennial AirReCsoenadricthioning who was refinishing the cooling tower at Denver consisted of cutting four one foot by four foot Fabrication linear feet All work panels for a total cutting of sixteen worn by Mike Geyer was done outside and personal samplers were and the author with one area sample taken The asbestos counts Stella Gaburo of M Health Safety and Environmental taken by Department were 0.0 cc 0.05 cc and 0.0 cc respectively and are to be compared to The samples taken were peak samples an OSHA peak standard of 10 cc of the corrugated sheet saw and Nilfisk GA vacuum Performance be excellent by Mr. Geyer He suggested all sites was judged to materials should be equipped with cutting asbestos containing that the workmen acceptance tools of this type His belief was of these tools would be good It is found recommended and samples that a job taken even with more severe conditions be though counts from this trial were well within acceptable limits Contents Summary only ARBALAN ARBALAN Reported by ARBLN ARBALAN G. R. Bauman Asbestos & Mineral Technology lkh C. Streib Director Mineral & Filtration Technology PRODUCED JM - 83 Distribution C. J. Sulewski M. Harris D. Poutiatine J. Connor J. Reis D. Kelleher R. M. Krone L. Siebert - 3-15 - 2-122-12 - 2-14 20- 2-14 2-14 - 2-124 -14 - 2-14 - 2-20 - 2-20 2-14 E. M. Fenner W. B. Reitze - 1-06 - 1-06 1-06 1-06 1-06 G. L. Swallow - 1-06 J. V. Magee J. W. McLain - 2-10 - 2-20 J. P. Leinweber - 1-06 P. Kotin - 1-06 J. Laipenieks H. B. Moreno - 1-05 - 13-14 A. L. Cini - 3-14 F. E. Schlachter - Wertheim G. Jachobs - Mol F. Colin - Mol J. Vandenberg - Mol J. R. M. Hutcheson - Asb R. E. Sampson - Asb A. R. Dennis - Asb E. J. Day M. D. Webb - Asb - Asb E. B. McKenna - Asb R. B. Gresham - Asb H. M. Hay J. Power - Asb - Asb Keywords Asbestos Asbestos Cement Dust Dust Collection Fabrication Environmental Health W. C. Streib W.J. Plichta G. R. Bauman 2 F. M. Bodycomb 2 S. Gaburo D Information Center 4 PRODUCED J-M 83 TOOLS FOR JOBSITE CUTTING OF ASBESTOS CFMENT SHEET MANVILLE September 1978 PRODUCED JM - 83 JM Johns Manville Research and Development Center Memorandum M411-819 Date 7/26/78 a A.F.D. A.F.D. Research Review - July 6 1978 - At Asbestos Dust Suppression of Asbestos Products Objective - Objective handling of To develop techniques techniques asbestos products that allow for the safe repulicaton or distrbuion general for not Confidetal Status - 3 General - Since cement and paper products comprise 73 percent of the dollar volume of M fiber sales work is being concentrated in these two areas To insure the safety of the personnel doing the work a Dust Chamber was designed and fabricated The the end chamber is foot X foot X foot open at to allow for air flow through the unit and attached at the other end to the D Dust System Air flow rates can be varied and are measured by a pitot tube manometer set Operator entry to the chamber is accomplished Dust moniters can be via a glove box arrangement placed at any desired location in the unit Tests have in the unit relate to demonstrated that dust counts real world conditions with no exposure to the operator Asbestos Cement - Dust control during field fabrication of cement products is being accomplished by 1 evaluation of existing tools and 2 the design of tools where existing equipment does not meet emission standards powered tools evaluated Dust counts with these tools include a saw were below the knife cc and clippers level PRODUCED Electric tools evaluated were a shroTuhdeedvad cu ruimllsea rvice Norcem Nibbler and a Festo Shrouded Saw with an air flow of 330 cfm used is a Nelfisk vacuum cleaner had dust counts in Of these tools only the Festo shrouded saw of 2 f'cc A saw throud was designed and fabricated excess at D The D shroud when used on a Black and Decker saw gave dust counts of 0 cc JM - 83 JM Manville Research and Development Center Memorandum M411-819 Page 2 das or distrbuion general for . not - (Confidetal . The above equipment has been field evaluated in Utah Composite dust counts e.g. not enough material was being fabricated to obtain counts on each individual piece of equipment were well below the two fiber level Operator acceptance of the equipment was also good Another field evaluation will be set where each individual piece of equipment can be evaluated seperately Acceptable results with the second evaluation would allow for endorsement of a Safe Work Practice Manual In addition to the aforementioned D is currently working on developing tools for cutting corrugated sheet and pipe Asbestos Paper and Board - Dust counts taken at M paper asntdanbdoaarrdds manufacturing locations indicate compliance with existing Therefore no work is being done in this area Dust counts taken during the unloading of asbestos roofing felt Chamber box cars show values indicate occasional readings above 2 cc Dust that dust counts above the 2 fiber level are possible when paper and board products are handled e.g. cut and sawed Therefore work on paper and baord is centered on the control of dust during shipping and handling Internal additives e.g. latex are being evaluated as a technique for locking the fiber in these products Results indicate that latex will control the dusting of asbestos paper 1percent 25 mils or less in thickness Thicker products such as millboard were not effectively dust suppressed even at latex levels of 5 percent Future Work - a Asbestos Cement - 1. Second field trial 2 Tools for Corrugated and pipe 3. Work Practice Manual Paper and Board - 1. Moniter roofing felt box cars for dust 1. 2 . Evaluate additives 3 Evaluate coating of Board 4 . Employ tools developed for A.C. 5. 5. Plant trials 6. 6. Field evaluation 1 PRODUCED JM - 83 RyE eni N CIRCULAR SAW SHIELD CAFECAFE SHIELD HAND SAN PRODUCED JM - 83 POOLS tal C as Thee @ 7 - e i <3 fi NILFISK VACUUM 1 PRODUCED J-M 83 v TOOLS TEST CHAMBER PIPE CUTTERS PIPE FIELD LATHE PRODUCED JM - 83 Pana PRODUCED JM 83 CIRCULAR SAW FOR CUTTING CORRUGATED C SHEET PRODUCED JM - 83 Ni} wy on TTR es, PRODUCED JM - 83 Dust Dust Dust wy dda -" f v ree on tai Page Collection Collection Collection Collection Collection Collection From From From 5 5 Pipe Pipe Pipe Interior Interior Interior Interior Interior To Vacu oe nea ON i} / \ i); General Arrancement Arrancement Arancemnt OpeningOpening Pre each side Vacuum 2 loose Loie fit ) | / \ /} \ a _ 3 flange / | me he ing ow ? zose + a rr stabilize stabilize whe a Ine ~ Slipt Joint NS / _ oA Detail plywood plywood x 48 rubber ^ 814 each baffle baffle 3 between baffles Scule Scule Scule schematic PRODUCED J-M 83 COOLS FOR ASBESTOS FABRICATION FABRICATION OPEN ROOM INCH FLEXBOARD Tool Description | Test | Conditions : Test Duration min Work Done Dust Count cc Area : Pers Power Drill 1 inch Cape Shield 10 Nilfisk vacuum Nisbler Nisbler , No vacuum 40 Danklip pickup No. 30347 : 1 Rockwell Circ | M shield 40 Say masonry Nilfisk vacuum 1 blade ; shield shield Sabre Rockwell Sabre |= M shield 40 : Nilfisk Nilfisk Saw Nilfisk vacuum Saw ; 163 holes | 0.0 : : incres | 0.0 i 10.1 | | | 40.1 ' -~- inches i | | 1 ! | 0.0 ' \ inches 0.1 it 0.1 No vacuum pickup No vacuum pickup Scoring Knife Eternit RisseKniv PRODUCED 30800 PRODUCED rasp - PRODUCED No vacuum pickup No vacuum i pickup | 15 : i ' 25 25 15 incres --- 0.2 inches 0.0 { | inches --- j | 0.3 \ 0.3 40 600 strakes 0.1 0.1 , H Remarks Some depris Slight debris Much debris inch C inch C Much debris { TOOLS FOR ASBESTOS CEMENT FABRICATION TEST CHAMBER INCH FLEXBOARD Tool Description Description j | Test | Conditions - Test Duration min percent Work Done Material Pulverized Dust Pulverized | Mat'l Captured ( Count am i cc Remarks Power Drili inch No shield no ' vacuum pickup 40 163 holes 75 Power Drill Cape shield , 40 163 holes 77 incn ' Nilfisk vacuum Nibbler DonKilp No. 80847 No vacuUM | pickup 4 - + 40 inches 3 13 87 712 712 0.9 Visible Dus 0.2 No Visible dust 1.0 Much debris | With shield 40 Festo circ 2 saw diamond Nilfisk vacuum blade \ | circ Cape shield 15 Rockwell saw diamond wood backing i blade Nilfisk vacuum | | Rockwell circ No shield no 15 saw masonry vacuum pickup | blade Rockwell circ M shield 15 saw masonry Nilfisk vacuum blade inches 181 | \ : incnesi 249 ; \ : i i inches 325 i | inches 338 4.5 | Slight V131 97 ; Just | 7.4 Much qust 90 on board 39 21.0 Very dusty 99 0.0 No visible dust i of of total material pulveri JM material captured by bag house and vacuum cleaner as percentage PRPODRUCOEDDUCED 83- Not measureable Tool shattered strip being cut off Tool Description Test Conditions | Test , Duration min Work Done Material Pulverized gm Pulverized Dust | Mat'l Captured Count percent cc Remarks Rockwell Sabre Saw Rockwell Sabre Saw No shield nc 15 vacuum pickup M shield 15 Nilfisk vacuum H i inches | 30 | 16 incnes | 95 91 9.8 | Very dusty 0.6 | Slight dobr Handsaw Eternit Sag No vacuum pickup 15 53.5 inches 31 10 I i ; No. 30810 1 ! ' 5 1 1 : 15 225 strokes 17 18 Hand rasp No vacuum ; ' pickup : U 0.3 | Much debris lasorious , 0.8 | Much depris Fine material captured by bag house and JM 8- 3 PRODUCED APPENDIX TABLE 1 RESULTS OF DUST TESTS r otac 1 Test i toutn ivd os ON ON 1ST , Test Ditration - 596 _ON_ doles utw , a 15 pa inch Cartade d T~- ~-p 0-50 Kaunse QTA 0-50 $ 09 No dust collection = 1111- daack 278709 2787709 9-1 725 ide podera podera rall prejestio Oszej # D 17 15 09 Nu dust collection 11 - Black & Docker UDI ON 125 Carbide Sipped Cleveland Tast Grill 25-6021-01 15 20 77777 : oh " ...' ... on asp Motinati 0001-91 p10155 padini M150fy 31 1445-01 15 20 207 [ , , ,, No dust collecti00 Avent SONY BIL a KI ZOO PUTI USAIOS steel re'LI to 6 YOUT 2010 49 ap Total 4.0 9 46 8 1.3 9 1. " i) 06 06 $ 07 13 pazn ut IMO IIS hong 0.6 inch M * ; ~ 31V ^ rosjanarnss id qbnoj 15 suitaspuns 1 queu Sheet 4-11th thick , ,21,3535 futon pazestigny st 3072 302W70-5075 quand pazianina | 0.05 ponad 0.05 Retracks , ,,, , 05/1 a ot A WiSipit Vote 16 07 DEUTETA 3562 25 Visible bust wo1 29 Visible see bust 1191 o wo1129 Je Chan Much Pine 07 wolde Dust T rell qvrug Page 1 he PRODUCED 8P3-RODUCED M Manville Research and Development Center Report No 411-1050 S4 Page 1 APPENDIX I TABLE 1 DUST 8 IN TESTS PIPE - 150 PIPE SAW Dust Chamber republn.atron or distrbuion genral for not Rockwell Saw - No dust collection as rec'd from mfgr J.M. Shield - No dust collection on pipe interior J.M. Shield - Pipe ends plugged - dust collection from entire pipe interior J.M. Shield - Baffles in pipe to isolato cutting tone with dust collection only from isolated area Open Room J.M. Shield - Baffles in pipe to isolato cutting zone with dust collection only from isolated area Test Duration min 50 15 15 15 40 Fibers 191 64.9 - 0.9 0.3 personal area - 0.1 ConfidentialConfidential PRODUCED J-M 83 M Manville Research and Development Center ww" Report No. E411-1063 Page 1 APPENDIX TABLE 1 Dust Test Results Membrane Filter Method Dust Test Chamber 1 No shield no vacuum pickup Cutting across corrugations Saw as received from manufacturer Cut 2.0 linear feet 5 minutes 60.4 cc 2 Shield and vacuum in use No rubber skirts on shield Cutting across corrugations Cut 7.0 linear feet 2.0 cc 3 Shield with skirts and vacuum in use Cutting across corrugations 0.0 cc Cut 7.0 linear feet 4 Shield with skirts and vacuum in use Cutting with corrugations Cut 8.0 linear feet 0.3 cc 5 Shield with skirts and vacuum in use Cutting diagonal to _ corrugations Cut 8.75 linear feet 0.6 cc ? Open Room 1. Shield with skirts and vacuum in use Cutting across with and diagonal to corrugations Cut 45.2 linear feet Personal Area - 0.1 - 0.0 ce cc Cut inch corrugated sheet 2 Same as tests in dust chamber 15 min test duration with common masonry blade but 40 min test duration PRODUCED JM PRODUCED Roa Tools for the Fabrication of A Abrasive Disc Saw inch Rockwell Model Use with M shroud 368-1 Sabre Saw Rockwell Model 548 Bayonet Saw Carbide Blades - Rockwell Type 6T No. 12390 or equivalent Use with M shroud Drill inch Rockwell Model 7501 Use with Cape Universal Building Products Ltd. Portable Drill Nozzle Kit - Pat App 59390 Vacuum Cleaner Nilfisk Model GA73 with Nilfisk foot inch ^ hose No. 106298 Nilfisk foot inch 0 hose axt No. 106297 Nilfisk Nilfisk Nilfisk 3 microfilters No. 613274 3 HEPA filters No. 115120 Container Frame No. 017101 Nibbler use with Rockwell Drill For use on sheet to inch thickness Handsaw For use where a limited amount of cutting is required Scoring Knife For use on sheet to inch thickness Hand Clippers For sheet to inch use on thickness Hand Rasp only For limited use Hose Adapter - in available from M X in X in inch IF hose - Central States Ho Company - Kana Flex 150 cl or equivalent Norcom FanKlip No. 80847 Use with drill adapter available from 11 Norcom Eclipse SawEternit Sag No. 80810 Blades - Norcem Ekstra No. 80811 Type 56-10 Sagblad Norcem Eternit Risse Kniv No. 808 Norcem Eternit Saks No. 80805 Many types areas are available in all loc PRODUCED JM - 83 Suppliers Disc and Sabre Saws Drills Drill Shroud Vacuum Cleaner Attachments and Nibbler Handsaw Scoring Knife Hand Clippers inch Hose Disc saw shroud sabre saw shroud hose adapter 2x1x1 Y Nibbler adapter Rockwell International - Dealers are located in most local areas Cape Universal Building Ltd. Register Office PO Box Exchange Road Watford Telex 262744 Telephone WATFORD 34551 Products 165 England Nilfisk of America Inc. 201 Kinc Manor Drive King of Prussia Pennsylvania Telephore 215 -277-3900 1940 Norcem 3470 mestad Oslo Norway Telephone -78-03-60 Central States Hose Company 5175b Stapleton Drive Denver Colorado Equivalent material is locally available in other areas At the present time these items must be ordered from Manvil PRODUCED JM - 83 vs + E JM Manville Research and Development Center Report No. E411-1063 Date November 9 1978 Title CIRCULAR SAW FOR CUTTING CORRUGATED A SHEET SUMMARY A shield has been developed for a standard portable circular saw Rockwell Model 368-1 which allows corrugated asbestos sheet to be cut dry in an acceptably dust free manner The shield illustrated in the Appendix consists of upper and lower cases which enclose the blade and cutting zone Each case is connected to a vacuum source Nilfisk GA73 vacuum cleaner by inch hoses The shield works on the principle of neartotal enclosure of the cutting zone to maximize the use of the available vacuum to retain dust within the enclosure and thus allow its removal The difficulty in enclosing the cutting zone when cutting corrugated compared to flat sheet is that the undulating surface presented to the blade is constantly changing To achieve enclosure of the cutting zone the valleys between corrugation crests must be blocked off to minimize air ingress both above and below the sheet However the structure which blocks the valleys must be able to rise out of the depressions and over the crests Additionally the saw must be easy to use i.e. the shield cannot drag on the sheer and require excessive force to operate / solve these problems overlapping rubber strips were placed on each side of the upper and lower cases As the saw moves across the sheet the strips extend into the valleys and effectively fill them to exclude air from the shield They fold outward when a crest is encountered Tests using a common masonry blade Table ) in the dust chamber show that with no shield or dust collection the dust count was 60.4 cc With the shield but with no rubber skirt the count was 2.0 cc There were substantial visible emmissions of dust during this test and this fiber count is questionnably low With the skirt counts of 0.0 to 0.6 cc were attained illustrating the effect of the device Tested in an open room the maximum fiber count was cc It is concluded that this shield allows the cutting of corrugated asbestoscement sheet with a circular saw equipped with a common masonry blade with fiber counts well under the 2.0 cc TLV Cutting may be done across with or diagonal to the corrugations It is believed that this device will be particularly useful to the medium and large contractor on jobs where a substantial amount of cutting or trimming is required Contents Summary Appendix 1kh Reported Reported by 5. So. S S F. M. Bodye PRODUCED Asbestos & Mineral Techno PRODUCED by SR SR BANAN G. R. Bauman PRODUCED PRODUCED Asbestos & Mineral Technology 1-03 8 C. J. DeBiase - 3-15 S M. Harris - 2-12 S D. Poutiatine - 2-14 J. Connor - 2-14 J. Reis - 2-14 D. Kelleher - 2-14 R. M. Krone - 2-20 4 Siebert > 2-14 E. M. Fenner - 1-06 1-06 G. L. Swallow - 1-06 J. V. Magee J. W. McLain 2-10 - 2-20 J. P. Leinweber R. Kotin - 1-06 - 1-06 R. E. Loeffler J. Laipenieks H. B. Moreno - 1-04 - 1-05 - 3-14 5 A. L. Cini - 3-14 S F. E. Schlachter - Wertheim G. Jacobs - Mol F. Colin - Mol J. Vandenbergh - Mol J. R. M. Hutcheson - Asb R. E. Sampson A. R. Dennis - Asb - Asb E. J. Day M. D. Webb - Asb - Asb E. B. McKenna - Asb R. B. Gresham - Asb H. M. Hay - Asb KEYWORDS Asbestos Asbestos Fabrication Dust Dust Collection Environmental Health W. C. Streth W. J. Plichta D. R. Christensen A. Schnabel F. M. Bodycomb 2 G. R. Bauman 2 D Infomation Center : 4 PRODUCED JM - 83 ee SAW & SHIELD FOR CORRUGATED C REPORT NO E411-1063 PAGE 2 f i 7 1/2 BRACKET TO HOLD LOWER CASE RUBBER STRPS vo END OF CASE * 1 1/4 L ; MASONRY BLADE J 7 1/2 1 -- * HOSE TO VACUUM CLEANER 3/4 PLATE TO HOLD RUBBER STRIPS ~TT Tee _~ lL tli C SHEE \ DIRECTION 3/4 PLATE RUBBER HOLD RUBBER > TO STRPS RUBBER STRIPS " CLEANER 1 HOSE TO VACUUM CLEANER OF CUT ) 6 | ns 6 > 1 1/4 ~*- ; [1 ' / PPER CASE 3/4 WIDE /\ /\ RUBBER STRIPS Lt. LOWER CASE 1 1/4 WIDE END VEW SAW DIRECTION BOLT INTO CASE 32 RUBBER 1 WDE WEDGE ee aS ee een CASE EEE Ta JM PRODUCEDPRODUCED DETAL RUBBER STRPS - 83 SCALE SCHEMATIC JM Manville Research and Development Center E No. Report E411-1063 E411-1063 Page 3 CIRCULAR SAW FOR APPENDIX FIGURE 1 CUTTING CORRUGATED A SHEET Vacuum Source - Nilfisk GA 73 Vacuum : Vacuum Airflow : Filtration Filtration 60 180 W.G. CFM ? stage stage PRODUCED JM - 83 JM Manville Research and Development Center E Report No. E411-1063 Page 4 APPENDIX FIGURE 2 CIRCULAR SAW FOR CUTTING CORRUGATED C SHEET JOHNS JOHNS MANVILLEMANVMIALNLVEILLEMANVILMLANVIELLE RESEARC RESEH ARCH RESEARCH AND AND ENGINEERING ENGINEERING ENGINEERING ENGINEERING CENTER CENTER CENTER CENTER E E Report No. Report Date Title EFFECT OF WEATHERING ON ASBESTOS PANELS SUMMARY Corrugated and Flat were removed for TRANSITE panels which had been normal cured examination from the roof and the east and north walls of the Manville Nashua New Hampshire plant after 42 to 45 years installation COLORLITH also removed from a vertical a steam cured product was weathering dock with a southern exposure after 12 years exposure in Finderne New Jersey These panels were examined visually thickness as compared to unexposed or battens and measured for decrease in areas protected by overlaps Results were as follows Product Location Decrease Inches in Thickness Inches per Year Corrugated TRANSITE ta Nashua NH West Roof 0.002 . 0.00005 Corrugated TRANSITE Nashua NH East Wall 0.014 0.00033 Flat TRANSITE Nashua NH North Wall 0.012 0.00027 COLORLITH Finderne NJ Southern Exposure Camco Brown Surf Green 0.0025 0.0017 0.00021 0.00014 Visual examination of the an eroded appearance with .surface Corrugated and Flat some asbestos fiber TRANSITE revealed protruding from the 00:59 00:59 PRODUCED JM - 83 DESENDON JOHNG MANVILLE DESENDON DESENDON MANVILLE DESENDON AND AND ENGINEERING ENGINEERING ENGINEERING ENGINEERING CECENNTTEERR E E Report No. Page 1 -- The only change noted for the COLORLITH was some color lightening It is concluded that these asbestos products are subject to very little surface erosion perhaps a maximum of 0.0003 inches per year . Contents Summary Introduction and Discussion Reported by kjm Notebook 3572 pp 1-11 R. H. Neisel PRODUCED J-M 83 " JOHNS MANVILLE RESEARCH RESEARCH AND ENGINE RING ENGINEERING ENGINE RING AND ENGINEERING ENGINEERING CENTER CENTER No. No. 2 Page INTRODUCTION The data presented in this Manville Report No. report was abstracted INT prepared from a confidential March 6 1970 by Osborn Ayers products with That report contained much additional data on other no pertinence to the present question of erosion of uncoated surface asbestos products The TRANSITE panels were removed from the Nashua plant buildings in November 1966. The buildings were 42 to 45 years old at the time and the panels were installed when the buildings were first erected in 1921 to 1924. In order to accumulate this data the selected panels were removed and forwarded to the Manville Research Center in Finderne New Jersey where the examination was conducted The panels were still structurally sound and the remainder of the installation was still functioning as the weather protective surface of the buildings / DISCUSSION The materials removed were as follows with the indicated C tions and measurements or battens was compared Material which had been to exposed material covered observa- by laps Corrugated TRANSITE - West Side of No. 2 Building Roof at Nashua Plant after 42 Years 1 A build of airborne material was on the surface of this panel The build was 1/8 to inch thick and was removed before measuring Measurement of areas protected from the weather indicated an inches while thickness of the average exposed thickness of 0.286 area averaged 0.284 inches 2 The thickness differential was 0.002 or 0.000048 inches per year Apparently surface as The difference was not statistically significant the loose surface covering had protected the no visual evidence of surface erosion was found Corrugated TRANSITE - East Wall of No. 2 Building at Nashua Plant after 42 Years 1 No build of surface material existed on this sheet Measurement of weather protected areas indicated an average thickness of 0.261 inches while the exposed area averaged 0.247 inches The thickness differential was 0.014 inches or 0.00033 inches year PRODUCED JM - 83 a 4 = J JOHNS JOHNS MANVILLE MANVILLE MANVILLE MANVILLE MANVILLE RREESESARECAH RRECSEARCHH AND AND EENNGINGEERIINNG EEENGINREERIING NENGINEERINGGENGINERING CCEENTNERTCEENTERR . E Report No. Report 3 Page Flat TRANSITE - North Wall of No. after 45 Years 1 Building at Nashua Plant 1 No build of surface material The protected area averaged 0.207 inches and the exposed area averaged 0.199 inches _ 2. The thickness differential was 0.008 inches or 0.00027 inches per year COLORLITH - Vertical Southerly Exposure on Weather Rack at Finderne New Jersey after 12 Years 2 One sheet measured 1.2540 inches in the protected area and 1.2515 inches in the exposed area for a difference of 0.0025 inches or 0.00021 inches per year 2 A second sheet measured 1.2640 inches in the protected area and 1.2623 inches in the exposed area for a difference of 0.0017 inches or 0.00014 inches per year PRODUCED - JM - 83 UM Manville TRANSITE Internal Correspondence To W.B. Reitze From D.R. Christensen 1-06 24 Date July 18 1980 Copies D.H. G.L. Markusson Swallow 2-18 1-06 Subject INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD CUTTING The purpose of this study was to simulate probable worker exposures to asbestos containing dust while cutting various Transite products and to conduct industrial evaluations by the method used in the United States hygiene prior to 1969 the year OSHA became effective and changed the analytical methodology The method used for evaluation was the midget impinger which results in con- centration determinations in MPPCF or million particles per cubic foot Sampling was also done by the current OSHA approved method for asbestos determination and results are given in cc or fibers per cubic centimeter In the United States the Greenburg standard impinger and its midget counterpart were the most widely used instruments for obtaining dust samples for evaluation by counting prior to 1969. In the impinger air is drawn through a nozzel and impinged against a glass plate set perpendicular to the orifice The plate is covered with free water or other suitable liquid which serves to trap and retain the dust particles after they strike the plate The impinger is operated by an electrically driven vacuum pump This instrumentation is generally suitable for sampling most dusts in the 0.7 to 10 micro- meter diameter range The actual apparatus used for these evaluations was the midget impinger filled with 10 milliliters of distilled water aspirated at 1.0 liter per minute by a personal sampling battery operated pump Analysis of samples was done by light microscope at 100X magnification using 10x oculars and a 10X N.A. = 0.25 flat field achromatic objective The microscope ocular was equipped with a Whipple graticule which is divided into 100 ruled fields of which 25 are used in the evaluation PRODUCED JM - 83 INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD PAGE 2 CUTTING The concentration in MPPCF or million foot is calculated using the following particles formula per cubic Particles per Cubic Foot = Count X 4 X 1000 X Vol sample liquid ml Cubic Feet of Air Sampled Cutting the Transite products was done with a Rockwell Model 368-1 8...builders power hand saw Figure 1 The saw was equiped with a Carborundum RCC Double Reinforced Silicon Carbide Masonry Cutoff Blade Catalog Number RCC8A Two work environments were sampled one inside a 40 foot semitrailer with doors open and approximately 10 feet inside the trailer and the second outside in the ambient environment These two situations were chosen as those most closely representative of field conditions Neither of these situations utilize any ventilation control Both general area and personal or operator breathing zone samples were taken in the two work environments Three Manville Transite products were tested in this study 1. Transite Pipe - " Pressure Fig 2 & 3 2 Transite Flat Sheet - " Fig 4 & 5 3. Transite Corrugated Sheet - 3/8 Fig 6 & 7 The results of the industrial hygiene determinations are found in Table 1. Please note that the sample durations were from 10 to 15 minutes corresponding to a peak exposure PRODUCED JM 33 INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD CUTTING SAMPLED WEEK OF JULY 7 1980 TABLE 1 FIGURE NUMBER PRODUCT WORK ENVIRONMENT SAMPLE TYPE MPPCF CONC MPPCF TLV cc CONC cc TLV 2 TRANSITE PIPE INSIDE TRAILER | PERSONAL 371.1 5.0 18.7 10.0 AREA 255.9 5.0 25.0 10.0 3 TRANSITE PIPE OUTSIDE TRAILER PERSONAL 6.9 5.0 5.0 10.0 AREA 13.2 5.0 5.9 10.0 4 TRANSITE FLAT SHEET INSIDE TRAILER | PERSONAL 174.1 5.0 67.8 10.0 AREA 220.7 5.0 62.2 10.0 50 TRANSITE FLAT SHEET OUTSIDE TRAILER PERSONAL 92.3 5.0 71.2 10.0 AREA 101.8 5.0 63.3 10.0 60 TRANSITE CORRUGATED INSIDE TRAILER | PERSONAL 81.2 5.0 10.0 10.0 SHEET AREA 87.9 5.0 10.0 10.0 7 TRANSITE CORRUGATED OUTSIDE TRAILER PERSONAL 1.2 5.0 2.9 10.0 SHEET AREA 8.8 5.0 17.2 10.0 * = Concentration extremely heavy number is best estimation PRODUCED PRODUCED PRODUCED 83 PRODUCED 83 PRODUCED PRODUCED INDUSTRIAL HYGIENE DETERMINATIONS TRANSITE PRODUCTS - SIMULATED FIELD PAGE 4 CUTTING Major points of discussion regarding the sample results are the following 1 2 3 ... . 5 . Visual observations support the high found by the analytical methods concentrations No pattern exists that of one being as to personal and area samples consistently higher than the other Inside trailer results are greater than those found outside trailer This is to be expected due to confinement All inside trailer samples exceed respective TLV's Majority of outside trailer samples exceed respec- tive TLV's The above study was conducted at the Denver Development Center by R.C. Cordova and D.R. - Research & Christensen DeChif DeChif DeChif DeChif DeChif DeChifDeChif DeChif DeChif DeChif DeChif DeChif DeChif et . DeChif D.R. Christensen PRODUCED 7 & y Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver D Plant Denver Colorado 80217 FIGURE 1 ROCKWELL MODEL 368-1 8...BUILDERS SAW PRODUCED JM - 83 oe JM Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver Plant Denver Colorado 80217 FIGURE 2 TRANSITE PIPE 6 PRESSURE INSIDE TRAILER JM Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver D Plant Denver Colorado 80217 FIGURE 3 TRANSITE PIPE 6 PRESSURE OUTSIDE TRAILER JM Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver . D Plant Denver Colorado 80217 FIGURE 4 TRANSITE FLAT SHEET 1/2 INSIDE TRAILER UM Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver - D Plant Denver Colorado 80217 FIGURE 5 TRANSITE FLAT SHEET 1/2 OUTSIDE TRAILER UM Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver D Plant Denver Colorado 80217 FIGURE 6 TRANSITE CORRUGATED " 3/8 INSIDE TRAILER SHEET PRODUCED JM JM Manville Sales Corporation Health Safety & Environment Rocky Mountain Area Laboratory Denver - D Plant Denver Colorado 80217 FIGURE 7 TRANSITE CORRUGATED SHEET 3/8 OUTSIDE TRAILER CE1D8-83 18-83 18-83