Document GzrdYKGrB1xvQD0ExLroNxdk4

"CALIDRIA11 ASBESTOS RG-244 HEALTH AND OSHA INFORMATION October 1, 1977 J Union Carbide Corporation Mining and Metals Division "Calidria" Asbestos Marketing and Technology Department Niagara Falls, New York UCC 003729 p INTRODUCTION The Williams-Steiger Occupational Safety and Health Act was passed in 1970 with the stated objective of assuring every American worker a safe and healthy workplace. The first health standard promulgated under this act covered exposures to airborne asbestos and went into effect on June 7, 1972. OSHA proposed extensive revisions of the regulations on October 9, 1975. The pro posal has been going through a variety of administrative procedures including feasibility and inflationary impact studies. The revised version is expected sometime in the first half of 1978. Asbestos has received a great deal of attention and publicity in the last several years. Unfortunately, much of the media treatment of the subject has been emotionally oriented and distorted and, in some cases, bordering on the sensational and untrue. Many users of asbestos and products containing asbestos have been mislead regarding the safety of asbestos and what is needed to comply with the OSHA requirements. The information presented in this folder has been collected as a service to "Calidria" asbestos users. It Is intended to help put both the health and OSHA compliance questions in a reasonable perspective. Included are: 1. A sunmary of the main provisions of the OSHA Asbestos Standard and a copy of the regulations. 2. Airborne asbestos fiber count data obtained by Union Carbide at a variety of industrial locations during the blending of RG-244 into polyester resin, the spraying of the asbestos containing resin, and the sanding and grinding of the finished parts. 3. Two pamphlets, "What You Should know About Asbestos And Health" i and "Asbestos and Health" published by the Asbestos Information I Association/North America. The first is an employee oriented discussion of both health and OSHA while the second addresses the health question. Additional copies are available on request. 4. A Material Safety Data sheet and analytical data on "Calidria" asbestos. OSHA REGULATIONS Introduction After extensive public hearings, a Federal standard for Exposure to Asbestos Dust was published in the Federal Register, Volume 37, No. 110 on Wednesday, June 7, 1972. A copy of this standard (1910.1001) is included with the literature at the back of this booklet.(') (1) Some states have established their own regulations and enforcement programs and have been certified by OSHA. Generally, these regulations are identical to 1910.1001 but occasionally there are important differences. This dis cussion applies only to the Federal standard. Information on any particular state is available upon request. h i non O 4" -> UCC 003730 -2- Basically, the standard can be divided into the following five major categories: 1. Standards: Defines the allowable airborne asbestos fiber content in the workplace. 2. Monitoring: Defines the method of collecting samples and measuring the airborne fiber concentration. 3. Methods of Compliance: Defines acceptable procedures to met the allowable limits. 4. Medical: Specifies frequency and type of medical examinations required. 5. Warning Signs and Labeling: Specifies when warnings are necessary and the wording of such warnings. The essential features of these categories are discussed in the remainder of this section. Before looking at these, however, it should be made clear that in the most basic sense the regulations require that every place of employment where asbestos is used must be monitored to determine the exposure level of airborne asbestos fibers. If the levels are well within the allowable limits, the only additional requirements are those relating to medical examina tions. If the levels are not clearly within compliance, all provisions of the regulations apply. There has been a great deal of confusion on this distinction, occasionally even with OSHA field inspectors. Standards The present OSHA standards set a maximum exposure to airborne asbestos fiber of length longer that 5u of: 1. An 8-hour, time-weighted average (TWA) of 2 fibers/cc. 2. A ceiling concentration of 10 fibers/cc. Note particularly the use of the time-weighted average over the 8hour shift. An operator performing one or two short additions of RG-244 per shift, as is typical of polyester producers, would have his exposure during the dumping time averaged with zero (or a very low background level) for the rest of the shift. This, obviously, tends to greatly reduce the 8-hour TWA. UCC 003731 A Lf r -3- Monitorinq The regulations require an initial monitoring to determine whether the workplace meets the required levels. Thus: "Within six months of publication of the regulations (June 7, 1972), every employer shall cause every place of employment where asbestos fibers are released to be monitored in such a way as to determine where every employee's exposure to asbestos fibers is below the prescribed limits." Monitoring usually is done by the membrane filter/personal air sampler, which can be obtained from a number of manufacturers. The personal air sampler draws workplace air onto a filter which collects the particulates and fibrous dust in the air. This filter is then placed under a microscope and the number of fibers counted. After the count is complete, the actual fiber concentrations, expressed as fibers per cubic centimeter of air, are calculated by formula. , After the initial monitoring, the regulations state: "...samples shall be of such frequency and pattern as to represent with reasonable accuracy the levels of exposure of employees. In no case shall the sampling be done at intervals greater than 6 months for employees whose exposure to asbestos may reasonably be foreseen to exceed the limits" prescribed by paragraph (b) of this sectionT" The section that has been underlined shows that if the initial monitoring give levels that are well below the allowable limits and no change is made in the method of operation which would increase dust levels, no further monitoring is required. It is a good and recommended practice, however, to monitor at regular intervals to make sure that the limits are being met. It should also be understood that you cannot be cited legally for exceeding the allowable limits bn the basis of your own monitoring. OSHA must base any citations issued on thiTr own tests. Methods of Compliance If monitoring shows a^ plant or operation to be in. excess of the limits, a number of ways are prescribed to bring it into compliance. These include, but are not limited to, engineering controls such as isolation, enclosure, exhaust ventilation, and dust collection. Certain work and housekeeping practices and waste disposal procedures are specified. Respirators, special clothing, and change rooms are also required under certain conditions. It is most important to understand that these compliance procedures are required only if the allowable airborne asbestos fiber limits are being exceeded or can be expected to be exceeded under reasonably foreseeable circumstances. They are not automatic requirements that apply wherever asbestos is present. M 1 uUc. O UCC 003732 -4- Medical Examinations Preplacement, annual, and termination medical examinations must be provided or offered by the employer for any employee "... engaged in occupa tions exposed to airborne concentrations of asbestos fibers." These medical records must be kept for 20 years and are available to the employee's physician. This section has proved to be one of the most confusing in the regulations since it does not define any cutoff level below which examinations are not required. Finally, after five years of urging, OSHA issued a clari fication. "Exposure to asbestos" is specified as any exposure which exceeds 0.1 fiber/cc >5y in an 8-hour time-weighted average or a peak level greater than 0.5 fiber/cc >5y based on a 15-minute sample period. Caution Signs and Labeling The regulations require that: i "Caution signs shall be provided and displayed at each location where airborne concentrations of asbestos fibers may be in excess of the exposure limits prescribed in paragraph (b) of tfris section." Wording for the signs is also specified. There have been some cases where the OSHA inspectors have taken this to mean signs are required at any location where asbestos is present, regardless of whether or not the exposure limits are exceeded. Although this is clearly incorrect, there has been a tendency to post the signs and not contest the citation. The regulations also require that: "Caution labels shall be affixed to all raw materials, mixtures, scrap, waste, debris, and other products containing asbestos fibers, or to their containers, except that no label is required where asbestos fibers have been modified by a bonding agent, coating, binder, or other material so that during any reasonably foreseeable use, handling, storage, disposal, processing, or transportation, no airborne concentrations of asbestos TTbers in excess of the exposuri limits prescrTFed in paragraph (b) of this section will be released.'1 Wording for these labels is also specified. UCC 003733 oo AIRBORNE ASBESTOS FIBER COUNTS Introduction This section presents air sampling data obtained in a variety of situations, mostly for typical industrial operations. All samples were collected on Mi Hipore filters and counted at 400X with phase contrast illumination in accordance with OSHA procedures. Particles which satisfied the L/J) >3 criteria but which, in the judgment of an experienced counter, could not possibly be asbestos were not included in the counts. Presentation of Data Table I shows "Calidria" asbestos RG-244 fiber counts obtained at 8 different polyester manufacturing plants. Typically, several hundred pounds of RG-244 are dumped into the thin tank in a 10-25 minute period. These samples obtained during the dumping operation thus represent ceiling concen trations. They would normally be averaged with considerably lower numbers for the remainder of the shift when asbestos is not being handled to arrive at the TWA. The highest fiber count found at these eight locations was 2.8 fibers/cc which is well below the allowable limit of 10 fibers/cc. Table II shows the fiber counts at three of the same manufacturing locations at the empty bag collection point. These values are also quite low. Table III shows airborne fiber counts for "small-scale" addition of RG-244 as occurs in a variety of compounding operations. The levels found ranged from 0.4 to 2 fibers/cc. Table IV shows the airborne asbestos fiber count data obtained during the spraying of a variety of asbestos containing resins. Much of the data are for polyester resins, but epoxies and alkyds are also included. The asbestos content of the resins ranged from 0 to 12% by weight. The highest count obtained was 0.6 fiber/cc. Polyester resin parts are often finished by sanding or grinding. Table V shows the airborne asbestos fiber counts obtained during a number of industrial finishing operations on resins with up to^3% asbestos. The highest reading obtained here was 0.4 fiber/cc. Table VI gives the results for a laboratory study where resin plaques containing a variety of fillers were abraided with an electric hand grinder in a small closed room. Even under these extreme conditions, the fiber counts were quite low with 1.2 fibers/cc, the highest observed. UCC 003734 A 0 27 AIRBORNE ASBESTOS FIBER COUNTS "LARGE-SCALE'1 DUMPING OF RG- 244 (--100-450 lb./Batch) Plant A B C Data Reference -- 1929-46-2 1929-30-2 D 1929-56-1 E 1929-50-3 F 1929-26-3 6 1929-24-2 H 1929-16-1 I 2119-8-9 J 2119-6-23 K 2119-12-9 Descripti on of Operation Dump Sample Bags Time Time Dumped (Min.) (Min.) 10 10 10 14 9 9 15 21 21 36 12 12 15 8 8 45 20 20 10 24 24 28 15 15 13 8 8 20 10 10 34 72 72 Special (2) Ventilation' ' None None Hood over thin tank opening None None None Hood over mixing area None None None None CEILING Concentrate Fiber Count (Fibers/cc. >5u) 0.7 1.2 0.7 2.4 0.5 1 1.6 0.8 2.8 0.4 0.4 0.9 samples collected in the breathing zone of the operator dumping the RG-244. (2)'Special ventilation refers to dust collection equipment at or near the dumping area that is specifically intended for dust control during the dumping operation. All plants had varying measures of overall building ventilation. Plant A B B J Data Reference -- - 1929-40-3 1929-40-5 2119-6-23 TABLE II AIRBORNE ASBESTOS FIBER COUNTS EMPTY BAG REMOVAL Description of Operation Sample taken 3 feet above waste disposal drum for empty bags. (During dumping.) Directly over empty bag stacking area. Taken during dump. Empty bag storage area. Taken during dump as bags were put in. Sample taken during bag disposal and clean up. UCC 003735 Sample Time (Min.) 10 'Fiber Count (Fibers/cc. >5u) 0.4 23 24 .^24 "o 0.6 0.4 0.1 TABLE III AIRBORNE ASBESTOS FIBER COUNTS^1* "SMALL-SCALE" DUMPING OF RG-244 (1-25 lbs./Batch) End Use Fur1n1 iture MoIIlding U II . II II Gel Coat Mfg. II II Artificial Brick Mfg. II 11 II Roof Coating Mfg. Gel Coat Polyester EpIoI xy Gel Coat Putty tt Sealant Caulking Compound II II Patching Compound Pounds Dumped 1 12 1 6 9 3 5 1.5 12 10.5 25 6.3 6.3 20* 20 20 15 6 6 3.3 Dump Time (Min.) 10 2.5 11 8 25 3 4 10 13 13 n 41 39 10 35 34 19 3 11 10 Sample Time (Min.) 10 2.5 11 8 25 3 4 10 13 13 11 41 39 10 35 34 19 3 1-1 10 Special Ventilation^ None None None Good Hood None None Good Hood None None Outdoors None None None Exhaust Fan Exhaust Fan None None None None Ceiling Concentration Fiber Count (Fibers/cc >5u) 1.5 1.1 2.0 0.9 0.7 1.2 0.9 0.4 1.1 0.3 O.'l 1.0 2.0 0.6* . 2.1 0.2 0.2 0.5 0.2 0.7 ^All samples collected in the breathing zone of the operator dumping the RG-244. (2) . .. 'Special ventilation refers to dust collection equipment at or near the dumping area that is specifically intended for dust control during the dumping operation. All plants had varying measures of overall building ventilation. * Sample taken during dump and bag disposal. UCC 003736 Ai O TABLE IV AIRBORNE ASBESTOS FIBER COUNTS SPRAYING OF RESIN BASED SYSTEMS CONTAIN1NC ASBESTOS CoMMrclal Aoollcatlon Date I - POLYESTER RESINS A. General Purpose Lamfnatino Ruins 69 Boat manufacture. 12/7/72 Binder General purpose laminating ruin. L-I3 10/31/74 N-28 fi-30 *m m V W N-34 n 1-12 v 10/8/74 I* * m Approx-^ Imate wt. * Asbestos Sorav Gun Tvoe Operation Sample Time IHIn.l Airborne Asbestos Fiber Concentration (Fibers/cc >5J O.S Air-supported Operator spraying chopper. molds with resin 4 chapped glass. 24 o.s 0.3 1* 0.5 m .0.5 m 0.S * 0.5 Operator spraying ruin 4 chopped fiber glus. (Includes roll-out time.) Operator spraying ruin 4 chopped fiber glaaa. Operator spraying ruin 4 chopped fiber glus. Operator spraying Mid with resin. (No glus.) 1* 16 5 4 55 53 35 0.6 o-1 0.4 0.4 0 0.03 0.1 S. Chemical Resistant Resins J--21 Fiber-glass pipe 8/13/74 manufacture. H-26 N Chemical resistant resin. 1.4 Airless. 1.4 16 Operator adjacent to automatic spray machine outing 28' mandrels. Operator wiping mandrals. In area near spraying. 23 0.1 14 0.4 J-S Ship coating. 10/3/74 Chemical 0.7 Air-supported Roll-out man. In 65 0.4 resistant wand. spraying area about resin + chopped 1/4 of tinm. fiber glass. J-7 If 0.7 I* Operator spraying ship hull in dry dock. 41 0.4 N-23 H Mm 0.7 M 23 0 ^ Sued on total forwletion u sprayed. UCC 003737 A n^ u *_/ ro* TABLE IV (contlnuedl AIRBORNE ASBESTOS FIBER COUNTS SPRAYINC OF RESIN BASED SYSTEMS CONTAINING ASBESTOS Sh1* Oaslonatlon Comerelal Aoollcation t: - EPOXY RESINS A. Filled EpOJU IC-8 SNIp coating. K-10 W-10 ' I-Z7 3-1 Data 10/2/74 II Binder Approx-^1^ lute Ut. X Asbestos Sorav Gun Type Epoxy prime High build epoxy. H 1.5 Airless. 1.5 0 Air supported. 0 0m ODeratlon Operator spraying outside 5 under a skip. Operator spraying side of ship free scaffold. a Sample Tine (H1n7) Airborne Asbestos Fiber Concentration IFIbers/ce >5* 33 8 31 . 14 60 0.2 . 0.2 0.1 0.3 0.03 B. Epoxy Coat Tar H-4S Coating dr? dock. 10/1/74 H-1 m K-3 Coating pipe Interiors. Epoxy Coal-tar, solvent. 1 1 1 III - ALKVD RESIN PAINT H-7 Painting 10/6/74 building axterlot N-3S H Alkyd resin. 12 12 Airless. Air-supported wand. Operator spraying side of dry dock fro* suspended platfom. Operator spraying side of dry dock free fixed scaffold. Operator spraying Interior of 3", 6" and 12* dlamtar pipe. 11 38 37 Airless gun. Operator spraying building exterior wall. 9 5 0.2 0.1 0 0.06 01 Based on total formilatlon as sprayed. UCC 003738 A i yj 0 J l TABIE Y AIRBORNE ASBESTOS FIBER COUNTS GRINDING AND SANDING OF RE5IM-6ASED SYSTEMS CONTAINING ASBESTOS Sv1* Designation Caeiaerclal Application I. TNERMCSET AEStN (Polvaster) ** Holding furniture port* "N Data VI5/72 1929-40-4 ft 12/6/72 Resin Polyattar 1929-82-3 1929-82-4 1929-82-5 1-13 [-6 Fabrication of rolnforead flbor glu* plpa. W 2/27/73 Polyester 4 8/1V74 a a ma 1-26 0-8 1-39 Fabrication of FRP tank* and plpa. M M 8/1V74 M Polyastar a a 1929-84-4 1929-84-5 Production of artificial brick*. H-20 8-25 Production of flbar glass boats. 3/8/73 Polyastar a 11/26/74 Polyastar Asbestos Approx. Tvoe At. 1 Oporatlon Sanple Haw Win.) Airborne Astestos Fiber Concentration LFibgrs/ec RG-244 a 0.05 0.05 m; 0.3 Operator hand sanding stall parts. Operator running power Sander with Integral hood. Operator sanding and grinding noldad parts. Good hood A vantilating systM on grtndar. 45 45 23 RG-144 2-3 a a R6-244 2-3 2-3 1.4 a 1.4 Operator pulls pipe along lint. Saws off and with circular saw. 19 Sane operation as 1929 82-3. 49 Operator reserving and Of 45 pipe with scarfing twchlne. Operator shaping and of pipe with ball A spigot mchlna. 16 Operator cutting off pipe and and light grinding on exterior surface. 17 RG-244 a 1.5 Operator grinding Inside of 13' I.D. x 26T tank. 1.5 Continuation of sent operation as 1-26. 1.5 ; Operator grinding edges of Miscellaneous saw 11 parts. 16 5 25 RG-244 a 2.0 2.0 Operator cutting with sabre saw. Operator triming with sabre saw. 44 39 RG-244 H 0.5 0.5 Operator grinding Inslda of boat hull. Operator grinding. 11 4 0.002 0.002 0.3 1 0.1 0.1 0.04 0.3 0.2 0.4 0.3 0.3 0.1 0.2 0.0 0.0 UCC 003739 A Ut> <*-! ot- ao +IsBJc0u) ^OSI- iV4>-) s<csu. : *co UoJ. 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CO Q. =c 3. ffi CL . 8 -- -- 01 O 3T 4^ 3 a3.'s_z O~ o< c O< M3 CL o< c a. 2. > f D-S CD ft aCtT SO S W <a5S 3 O CT O O x r*-o - -i O3 <o Sw 3so 3 WQxCT CC"DT -I < CT 3. CT U 1--.U O OQ. Nffl aoc at "o 3 ~< zX.'C C C o 3 Sffffll' 3 ffl (Q CO ,, CD 3 ca 233ii^C-oD 0C-O * M ^0 4 nU UCC 003747 ASBESTOS AND HEALTH Asbestos, used since antiquity, has widespread and important applications in our modern technological society. Approximately 3,000 different products containing asbestos are in daily use throughout the world. Its increased use in the 20th century has lent urgency to the need to cope with occupational health problems related to die excessive inhalation of asbestos dust Such problems are not unique to the asbestos industry. Many substances and materials in common use today can be detrimental to the health and safety of industrial workers under uncontrolled conditions. A vital and widely used raw material, asbestos is but one of a number of potentially harmful substances used by industry. Basically, the known facts about asbestos-related disease can be summed up as follows: . First, asbestos-related health risks today are almost exclusively confined to die occupational setting. Second, the effects of excessive inhalation of asbestos are both time and dose related. This means that asbestos-related diseases may develop, generally, only after the inhalation of substantial amounts of asbestos dust over a substantial period of time. Thus, there are levels of exposure that will not result in any increased risk of disease. Third, there is presently no evidence of risk to the general public from exposure to the minute amounts of asbestos that have been found in community air. Fourth, because of the long latent period of asbestos-related disease, the disease being found today among some long-term industry employees is not an indication of present day condi tions, but is a result of conditions existing decades ago, at a time when neither the industry, government, or the medical profession knew very much about the health effects of asbestos and even less about the proper means for their control. These facts are well recognized by the asbestos manufacturing industry, which has made substantial progress over the years in protecting those who work with asbestos and in eliminating emissions of free asbestos fiber into the community air. Known and Suspected Occupational Risks There are three primary diseases known to be caused or exacerbated by prolonged and heavy inhalation of asbestos fibers. They are asbestosis, bronchogenic (lung) cancer, and mesothelioma. Prolonged heavy exposure does not necessarily result in disease and death-- but there is little question that risks are significantly increased. Asbestosis This is an occupational disease characterized by lung scarring, and is one of the lung diseases called pneumoconioses. It is the most common of the three asbestos related illnesses and is found only among those who have worked regularly and continuously with asbestos under inadequately controlled conditions. The average time span from first exposure to the first clinical signs of asbestosis is 17 years, although some cases have been reported in as few as ten years. Asbestosis is neither malignant nor necessarily fatal. Many asbestos workers with minor cases can and do continue to work and lead normal lives without difficulties. The asbestos t UCC 003748 A i (j 1 industry has long recognized the risk of this disease and has implemented safeguards to protect workers' health. As far as can be determined, asbestosis never has been found in the general public, even among people living in close proximity to asbestos mines and processing plants. Bronchogenic (Lung) Cancer A number of medical studies have linked heavy asbestos exposure with an increased risk of lung cancer. While lung cancer occurs far less frequently among asbestos industry workers than asbestosis does, under some circumstances ,it occurs more frequently than in the general population. As with asbestosis, the amount of fiber to which an employee is exposed is an important factor in lung cancer development A continuing study of workers in a British asbestos textile plant has shown that dust control measures, which had substantially reduced the incidence of asbestosis, also reduced the incidence of lung cancer among the workers to that existing in the general public. In addition, it is the considered opinion of many scientists that lung cancer will not develop in an employee if he did not first have asbestosis. Unquestionably, factors other than heavy asbestos exposure are important in the causa tion of lung cancer among asbestos industry workmen. The most documented example is cigarette smoking. Studies conducted of as many as 17,500 asbestos insulation workers show that those who smoke have a much greater risk of contracting lung cancer than non-smokers in the general public, but that those asbestos industry workmen who do not now smoke cigarettes and who have never smoked regularly, have no greater risk of lung cancer than the average man-in-the~street who does not smoke. Mesothelioma This disease is an extremely rare cancer of the lining of the chest (pleura) or the abdomi nal cavity (peritoneum). It is found more frequently among those with occupational asbes tos exposure than among the general population. It also has been found among people who, in the past, lived in close proximity to uncontrolled crocidolite asbestos plants or mines, and even, on rare occasions, in the households of employees who worked in crocidolite asbestos factories or mines and who presumably brought substantial quantities of this particular type of asbestos fiber into their homes on their work clothes. This has not been found to be the case with individuals exposed only to chrysotiie asbestos, which accounts for 97% of the asbestos fiber used in the U.S. today. Since the latent period for mesothelioma ranges from 30 to 45 years, it is impossible at this late date to determine precisely the exposure levels experienced by these "neighbor hood" and "household" cases. However, they were probably quite high by today's stan dards. In any case, as technology was developed for the control of asbestos dust levels, both in tha plant and out, thus? potentially hazardous conditions were criminated. A relatively small number of cases have also been reported among employees in shipyards and on construction projects who, while not working directly with asbestos, were exposed to heavy concentrations of airborne fiber by working in close proximity to those who did. exposures of this type have been reduced by strictly enforced industrial safety devices and procedures. The search for answers to the mesothelioma problem is complicated by a number of factors. In the first place, the number of cases being found, even today, is still relatively smalt. In all of Canada, for example, only 165 cases were reported in the ten-year period ending in 1968. Secondly, it appears highly likely that certain varieties of asbestos (crocidolite and amosite) are more likely to cause mesothelioma than others. Thirdly, its diagnosis and recognition are still considered problems among medical experts. It is also certain that 2 UCC 003749 there are other causes of mesothelioma besides asbestos. Unfortunately, what those other causes might be is still unknown. Until these and other equally important factors are thoroughly investigated, the mesothelioma question will remain unresolved. Other Tumors Some researchers have reported higher-than-normaf rates of gastrointestinal cancer among some heavily exposed industry groups. Other researchers have reported no increase of this type of cancer. The consensus of medical opinion is that the evidence is too scanty for a definitive conclusion. Asbestos and the General Public Medical reports of excess asbestos-related disease among occupationally exposed popula tions have been frequently cited by some writers, environmentalists, politicians and others as "proof" that the health of the general public is endangered by the minute amounts of asbestos dust being found in community air. "Neighborhood" and "household" cases of mesothelioma are cited extensively in this regard, as are the frequent reports of the findings of free asbestos fibers and so-called ferruginous bodies (which sometimes contain asbestos) in the lungs of some city dwellers at autopsy. The truth is, however, that there is no evidence--either from experience or from scientific research--that anyone in the general public has ever contracted any asbestos-related disease from exposure to these minute amounts of airborne asbestos, which are many times lower than levels which have been demonstrated to result in no excess of disease in occupationally exposed populations. This conclusion is supported by both the Asbestos Panel of the National Academy of Sciences' Committee on Biologic Effects of Atmospheric Pollutants, and the 33 member Advisory Committee on Asbestos Cancers of the International Agency for Research on Cancer, a division of the World Health Organization. In its 1971 booklet entitled "Asbestos: The Need For And Feasibility of Air Pollution Controls," the NAS Asbestos Panel, which consisted of seven of the nation's top experts on asbestos and health, stated that "there is no evidence that persons in the general popula tion--without occupational, household or neighborhood exposures--have any increased risk of neoplasm, even though there may be ferruginous bodies or fibers in their lungs." Warning against conclusions of the type frequently reached by the uninformed with regard to asbestos, die report further stated: "One cannot extrapolate from the mortality experi ence of, on the one hand, those who are directly and indirectly exposed to asbestos in their employment to, on the other hand, the general public, who have had moderate or slight exposures from ambient air." The report concluded with the statement that "there is no evidence that the small numbers of fibers found in most members of the general population affect health or longev ity." The report of the IARC Advisory Committee represents the consensus of present world medical opinion on all aspects of the asbestos-health problem. Meeting immediately after the October 1972 Lyon Conference on the Biological Effects of Asbestos, the Committee, with representation from ten different countries, drafted the following opinions on asbes tos-related disease and the general public: Asbestosis: "There is at present no evidence of lung damage by asbestos to the general public. The amount of asbestos in the lungs of members of the general public is very small, compared to those occupationally exposed." Lung Cancer: "The evidence ... suggests that an excess lung carcinoma risk is not de tectable when the occupational exposure has been low. These low occupa- 3 3A '* u ^ sj UCC 003750 tionat exposures have almost certainly been much greater than that to the public from general air pollution." Mesothelioma: "There is no evidence of a risk to the general public at present." Because of some recent controversy in the United States and Canada on this subject, the question was also examined whether there is any "evidence of an increased risk of cancer resulting from asbestos fibers present in water, beverages, food or in the fluids used for the administration of drugs." The answer of the Committee was: "Such evidence as there is does not indicate any risk." While the conclusions of these two eminent scientific bodies should be reassuring to those concerned with the presence of minute amounts of asbestos in the ambient air, the asbestos manufacturing industry in the United States will continue in its efforts to reduce asbestos emissions so that potentially hazardous levels will never be permitted to develop in the future. Asbestos and Health Research Extensive medical and technical research into the health effects of asbestos and the proper means for their control is being conducted in laboratories throughout the world. A significant percentage of this research is being sponsored, co-sponsored or cooperated in by the world asbestos industry. In fact two of the largest non-governmental sources of funds for asbestos-health research are the Institute of Occupational and Environmental Health (IOEH) in Montreal, which is sponsored by the Quebec Asbestos Mining Association, and the Asbestosis Research Council, sponsored by the British asbestos manufacturing industry. The results of research sponsored by these two agencies and also by individual companies acting independently have contributed significantly to our knowledge of the biological effects of asbestos. In addition, industry environmental control experts are constantly working to develop new or improved methods of handling asbestos and asbestos-containing products safely. Much has been learned about asbestos and health in a very short time--especially when you consider that the greater part of all medical information about asbestos-related disease is less than a decade old. According to Or. Premysl Pelnar of the Institute of Occupational and Environmental Health, approximately 90 per cent of all information and data now available is the result of medical studies undertaker^ during the past ten years. Much more is still needed: In late 1972, The International Agency for Research on Cancer made recommendations for further research and indicated priorities for work of immediate and long-term value. Emphasis was placed on epidemiological and pathological studies, and high priorities were urged for certain projects. These included: 1. Usefulness of early detection in the prevention of progressive fibrosis and asbestos cancers and in the identification of hazardous conditions; 2. Assessment of excess cancer risks following exposure to only one variety of asbestos; 3. Amount and type of asbestos in the lungS of mesothelioma cases; 4. Secular changes in incidence of pleura! and peritonea! mesotheliomas nationally and internationally; 5. Possible association between past exposure to asbestos and cancer of sites other than lung, pleura and peritoneum; 6. Relationship between asbestosis and risk of carcinoma. The asbestos manufacturing industry will continue to support and cooperate in research projects of this nature. The Asbestos Information-Association, for example, is presently 4 A ; Gd-4 UCC 003751 sponsoring a study at the Harvard School of Public Health on chest ausculation (breathing sounds) as an early detection device in the diagnosis of asbestos-related disease. While this needed additional information and data is being developed, the industry will take alt steps necessary to assure a safe working environment for its employees and for applicators and fabricators of asbestos-containing products. Asbestos Information Association North America 1660 L Street, N. W. Washington, D. C. 20036 5 UCC 003752 A I uO ) Title 29--LABOR Chapter XVII--Occupational Safety and Health Administration, Depart ment of Labor PART 1910--OCCUPATIONAL SAFETY AND HEALTH STANDARDS Standard for Exposure to Asbestos Dust On December 7. 1971, an emergency temporary standard concerning exposure to asbestos fibers was published in the Federal Register (38 FJt. 23207). In ac cordance with section 6(c) (3) of the W1Illams-Steiger Occuptaional Safety and Health Act of 1970, a notice of proposed rulemaking regarding a permanent standard for exposure to asbestos fibers was published in the Federal Register on January 12. 1972 (37 FJt. 466). The no tice invited interested persons to submit both orally and in wilting, data, views, and arguments concerning the proposal. On or about January 24, 1972, the Ad visory Committee ou Asbestos Dust was established and requested to make writ ten recommendations with regard to the proposed standard on asbestoe. On or about February 1, 1972, the Department of Health, Education, and Welfare tram mltted to the secretary of Labor a cri teria document containing Recommcnda- NOTE: The preamble to the "permanent" asbestos stan dard, issued June 7, 1972, is reproduced for informa tion. It was not included in the republication of the standard on June 27, 1974, but directly relates, pro viding background consider- . ations for OSHA's exposure to asbestos dust^regulation. RULES AND REGULATIONS 11318 tlons for an Occupational Exposure exposure to asbestos fibers and the ap Standard for Asbestos by the National pearance of adverse biological manifes Institute for Occupational Safety and tations, such as asbestosis, lung cancers, Health (NIOSH). Public notice was given and mesothelioma, have given rise to of the receipt of the recommendations controversy as to the validity of the and their availability for Inspection and measuring techniques used and the relia copying. On or about February 23. 1972. bility of the relations attempted to be the Advisory Committee on Asbestos Dust established. Because of the long lapse submitted its written recommendations of time between onset of exposure and to the Assistant Secretary of Labor for biological manifestations, we have now Occupational Safety and Health. evidence of the consequences of exposure, Pursuant to the notice of rule making, but we do not have, in general, accurate a hearing was held on March 14 through measures of the levels of exposure oc 17,1972, for the purpose of receiving oral curring 20 or 30 years ago, which have data, views, and arguments concerning given rise to these consequences. There the proposed standard. On or about are also controversies concerning the March 31,1972, the presiding hearing ex relative toxicity of the various kinds of aminer certified to the Assistant Secre asbestos, and varying hazards in dif tary of Labor for Occupational Safety ferent workplaces. and Health the record of the proceeding. It is fair to say that the controversy The record includes prehearing written has centered in the area between a two- comments, a transcript of the oral pres fiber TWA concentration and five-fiber entations made at th`e hearing, and nu TWA concentration, with variations on. merous exhibits received during the the time needed for compliance. Many course of the bearing or within the pe employers support a five-fiber TWA. riod allowed after the close of the Most medical opinion Is divided between bearing. . a two-fiber standard and a five-fiber The proposed standard dealt with (1) standard. permissible concentrations of asbestoe In view of the undisputed grave con fibers: (2) methods of compliance; (3) sequences from exposure to asbestos warning signs; (4) monitoring; (S) med fibers, it is essential that the exposure be ical examinations; and (6) recordkeep regulated now, on the basis of the best ing. Each of these major proposals elic evidence available now, even though it ited comments, arguments, objections, may not be ae good as scientifically de and counterproposals. They all have been sirable. An asbestos standard can be re examined and considered. evaluated In the light of the results of 1. Acceptable concentrations of asbes ongoing studies, and future studies, but tos dust. The proposed standard would cannot wait for them. Lives of employees limit occupational exposure to 8-hour are at stake. time-weighted average (TWA) airborne It is concluded that there should be concentrations of asbestos dust not ex ceeding five fibers longer than five micrometers per milliliter. Concentra tions above five fibers but not to exceed 10 fibers (celling concentration) would be permitted up to 15 minutes in an hour, one minimum standard of exposure to asbestos applicable to all workplaces ex posed to any kind, or mixture of kinds, of asbestos. Reasons of practical ad ministration preclude a variety of stand ards for different kinds of asbestos and but for not more than 5 hours in any one of workplaces. Also, while the evidence 8-hour day. tends to show that crocidolite. for in NIOSH in effect has recommended stance, is more harmful th^n chrysotile, that the live-fiber TWA and 10-flber peak concentrations be permitted only for 2 years; thereafter, TWA concentra tions should be not more than 2 fibers the evidence Is not sufficient to establish separate standards for varieties of asbestos. Because there must be one standard per cubic centimeter (cm.1) of air, and peak concentrations should not exceed 10 flbers/cm.', with no time restriction. Numerous objections and counterpro governing exposure to all varieties of asbestos, and in workplaces apparently more hazardous than others; because some present employees with regular ex posals have been made, with regard to both the limits of asbestos fiber concen trations and the time periods to comply with them. Some, for example, have rec ommended return to a 12-flber standard of an earlier day; l.e., a level adopted under the Walsh-Healey Public Con tracts Act in 1969. Others have recom mended a two-fiber standard to become effective In 6 months, then a one-fiber posure to asbestos have probably al ready accumulated great doses of asbes tos fibers, due to higher levels of ex posure in the past; because it appears that levels of exposure which may be safe with regard to asbestosls are not safe with regard to mesothelioma: be cause the statute requires the protection of every employee, even of one who may have regular exposure to asbestos during standard for 2 years, and finally a zero- fiber standard after 3 years. These rec ommendations give a fair indication of the wide spread of the counterproposals. a working life which may reach, or even exceed. 49 years; and because of several other considerations which hare been urged and are reflected in the record of No one has disputed that exposure to the proceeding, the conflict in the medi asbestos of high enough intensity and cal evidence is resolved in favor of the long enough duration Is causally related health of employees. As of July 1, 1976, to asbestosls and cancers. The dispute Is TWA concentrations of asbestos fibers as to the determination of a specific level longer than 5 micrometers will not be below which exposure Is safe. Various allowed to exceed two flbers/cc., with a studies attempting-to establish quantita ceiling value of 10 fibers/cc. The current tive relations between specific levels of TWA concentrations of five fibers, and FCOftAl MGI5TI*, VOL 37, NO. 110--WEDNESDAV, JUNE 7, 1*72 & > o > UCC 003753 RULES AND REGULATIONS 11319 celling concentrations of 10 fibers/cc, fibers, so that these would not be released 6. Records. The standard, as proposed will be permitted until July 1. 1076. dur In the normal use of the products, should and ns adopted, requires maintenance of ing what will be a transitional period not be required to be' labeled: and (2) records of monitoring and of medical deemed necessary to allow employers to words such as "danger" and "cancer" are examinations. Most of the controversy In make the needed changes for coming unwarrantedly alarming. this area has revolved around the ques into compliance with the more stringent Both contentions have merit, and the tion whether an employer should be al standard. standard has been changed accordingly. lowed to have access to the results of The record shows that the many work 4. Monitoring. The proposed standard the required medical examinations. The operations subject to the single asbestos would have required personal monitor apprehension of those who have argued standard (textile, manufacturing, indus ing and environmental monitoring. against employer access is based on the trial, and marine Installation, etc.) will Many issues have been raised concerning expectation that some employers will use meet .varying degrees of difficulty In the availability and reliability of meas the medical examinations as a means of complying with the standard. In some uring instruments, frequency of moni screening employment applicants, and plants, extensive redesign and reloca toring, and conditions in which monitor worse, as grounds for discharging current tion of equipment may be needed. It ap ing should be required. The adopted employees, who show signs of being af pears, however, the delay In the effective standard takes the objections into con fected by exposure to asbestos. Since the date of the two-fiber standard will pro sideration. It requires periodic monitor purpose of the medical examinations is vide all employers a reasonable time to ing at intervals no longer than 6 months, to monitor the health of employees ex comply. At the same time, so long as the thus allowing considerable time and dis posed to the hazards of abestos. em ceiling limit is complied with, no harm cretion, and prescribes the use of the ployees cannot In reason be granted the is reasonably expected to result from ex membrane filter method, which is an ac privilege of refusing to disclose to their posures during the transitional period. ceptable method for determination of employers results of occupational expo 2. Methods of compliance. It has been pointed out by many persons, that pro tection against asbestos fibers Is best obtained by controlling the generation of fibers first, and secondly, by controlling the dispersion of released fibers into the ambient air of the workplaces. Therefore, asbestos fibers. It has also been recommended that employees or their representatives should have an opportunity to observe the monitoring. The recommendation has been accepted. 3. Medical examinations. The pro sure. It does not make sense to require employers to provide medical examina tions if they cannot know and use the results of the examinations. For these reasons the standard provides that em ployers may have a restricted access to some medical information. the standard requires feasible techno logical controls and appropriate work practices as the primary means of com pliance. Rotation of employees as a way of meeting the TWA concentration re quirement Is allowed only In stated ex ceptional circumstances, because, as a general rule, it would be difficult to im plement. Personal protective equipment, posed standard would only require an appropriate medical examination on a periodic basis. The generality of the pro posal has attracted many objections and also many helpful comments. The recom mendations of NIOSH and of the Advi sory Committee on Asbestos Dust were much more specific with respect to both frequency and type of medical examina such as respirators, cannot be relied tions to be required. The comments vary upon because, among other reasons, they as to the class of employees to be ex may be so uncomfortable as to be bur amined and as to tho frequency of the densome, except for short periods of examinations. time. Therefore, it Is expected that res The adopted standard requires medical pirators and shift rotation will be used examinations both at the beginning and during the period necessary to install en the termination of employments exposed gineering controls and to train employ to concentrations of asbestos fibers, and ees In sound work practices, but, after also requires annual medical examina technological compliance has been tions of every employee exposed to air achieved, their use must be limited to borne concentrations of asbestos. It has special work situations and emergencies. been pointed out that In certain Indus Where both are practicable, shift rota tries, such as construction, an employee tion is required. may work for several employers during 3. Labeling. The proposed standard the same year. Accordingly, the standard stopped short of requiring labeling as does not require either preemployment, bestos and asbestos-containing products. or termination, or periodic examinaton The proposed standard would have re of any employee who has been examined On the other hand, there Is no Inten tion to allow employers to abuse medical information obtained pursuant to the Act, to the detriment of employees. Therefore, the administration of the medical records requirement will be closely watched, and. in cases of abuse, appropriate action will be considered. The issues discussed above are believed to bo the major ones. Numerous other Is sues have been raised in the rulemaking proceedings. Some have been referred to incidentally. Many recommendations, for instance, about work practices, are so obviously meritorious that their adop tion needs no exposition here. Other recommendations and many objections h-.ve not been adopted for a variety of reasons which should be manifest. Sev eral. for Instance, have recommended the use of respirators only pursuant to a variance, or in cases of emergency and occasional short-term exposures. The recommendation with respect to vari ances undoubtedly has many merits, but is considered administratively Im quired only warning signs at locations In accordance with the standard within practical. where asbestos hazards are present. the past year. ' However, labeling, rather than warning One question which has been raised signs, has proved to be a point of con goes to whether the employer or the em troversy. Both NIOSH and the Advisory ployee should be allowed to choose the Committee on Asbestos Dust recom examining physician. The standard mended labels for asbestos products and gives the option to the employer. Since containers, and these recommendations some employers already have a medical became very controversial in the course examination program in operation, and, of the proceeding. Many counterpro also, have medical departments with proposals have been made as to the lan some expertise in the diagnosis of abes- guage of the warning as well as to the tos-related diseases, It seems more products to be subject to the labeling reasonable to permit them to utilize the requirements. Employers. In general, present programs and expertise, than to strongly contend that (1) finished prod permit an employee to choose a private ucts which effectively entrap asbestos general practitioner. RDEKAl HECHTER, VOL 37, NO. 110--WEDNESDAY, JUNE 7, 1971 UCC 003754 tx 'j o 1  1910.1001 Title 29--Labor Title 29 Code of Federal Regulations Parts 1900 to 1919 Revised as of July 1, 1979 1910.1001 Asbestos. " (a) Definitions. For the purpose of this section. (1) "Asbestos" includes chrysotile. amosite, crocidolite. tremolite, anthophyllite. and actinolite. (2) "Asbestos fibers" means asbestos fibers longer than 5 micrometers. (b) Permissible exposure to airborne concentrations of asbestos fibers--(1) Slatidard effective July 7, 1972. The 8hour time-weighted average airborne concentrations of asbestos fibers to which any employee may be exposed shall riot exceed five fibers, longer than 5 micrometers, per cubic centi meter of air. as determined by the method prescribed in paragraph (e) of this section. 12' Standard effective July J. 1976. The 8-hour time-weighted average air borne concentrations of asbestos fibers to which any employee may be ex posed shall not exceed two fibers. UCC 003755 A > 1 f Q 'J Chapter XVII--Occupational Safety and Health Administration 1910.1001 longer than 5 micrometers, per cubic centimeter of air, as determined by the method prescribed in paragraph (e) of this section. (3) Ceiling concentration. No em ployee shall be exposed at any time to airborne concentrations of asbestos fibers in excess of 10 fibers, longer than 5 micrometers, per cubic centi meter of air, as determined by the method prescribed in paragraph (e) of this section. (c) Methods of compliance--i 1) Engi neering methods. <i) Engineering con trols. Engineering controls, such as, but not limited to, isolation, enclosure, exhaust ventilation, and dust collec tion, shall be used to meet the expo sure limits prescribed in paragraph (b) of this section. (ii) Local exhaust ventilation, (a) Local exhaust ventilation and dust col lection systems shall be designed, con structed. installed, and maintained in. accordance with the American Nation al Standard Fundamentals Governing the Design and Operation of Local Ex haust Systems, ANSI Z9.2-1971, which is incorporated by reference herein. (6) See 5 1910.6 concerning the avail ability of ANSI Z9.2-1971, and the maintenance of a historic file in con nection therewith. The address of the American National Standards Insti tute is given in 1910.100. (iii) Particular tools. All hand-oper ated and power-operated tools which may produce or release asbestos fibers in excess of the exposure limits pre scribed in paragraph (b) of this sec tion. such as. but not limited to, saws, scorers, abrasive wheels, and drills, shall be provided with local exhaust ventilation systems in accordance with subdivision (ii) of this subparagraph. (2) Work practices--(i) Wet methods. Insofar as practicable, asbestos shall be handled, mixed, applied, removed, cut. scored, or otherwise worked in a wet state sufficient to prevent the emission of airborne fibers in excess of the exposure limits prescribed in para graph (b) of this section, unless the usefulness of the product would be di minished thereby. (ii) Particular products and oper ations. No asbestos cement, mortar, coating, grout, plaster, or similar ma terial containing asbestos shall be re- moved from bags, cartons, or other containers in which they are shipped, without being either wetted, or en closed. or ventilated so as to prevent effectively the release of airborne as bestos fibers in excess of the limits prescribed in paragraph (b) of this sec tion. - (iii) Spraying, demolition, or remov al. Employees engaged in the spraying of asbestos, the removal, or demolition of pipes, structures, or equipment cov ered or insulated with asbestos, and in the removal or demolition of asbestos insulation .or coverings shall be pro vided with respiratory equipment in accordance with paragraph (d)(2)(ill) of this section and with special cloth ing in accordance with paragraph (d)(3) of this section. (d) Personal protective equipment-- (1) Compliance with the exposure limits prescribed by paragraph (b) of this section may not be achieved by the use of respirators or shift rotation of employees, except: (1) During the time period necessary to install the engineering controls and to institute the work practices re quired by paragraph (c) of this sec tion; (ii) In work situations in which the methods prescribed in paragraph (c) of this section are either technically not feasible or feasible to an extent in sufficient to reduce the airborne con centrations of asbestos fibers below the limits prescribed by paragraph (b) of this section; or (ill) In emergencies. (iv) Where both respirators and per sonnel rotation are allowed by para graphs (d)(1) (i), (ii), or (iii) of this sec tion, and both are practicable, person nel rotation shall be preferred and used. (2) Where a respirator is permitted by paragraph (d)(1) of this section, it shall be selected from among those ap proved by the Bureau of Mines, De partment of the Interior, or the Na tional Institute for Occupational Safety and Health, Department of Health, Education, and Welfare, under the provisions of 30 CFR Part 11 (37 F.H. 6244, Mar. 25, 1972), and shall be used in accordance with subdivisions (i), (ii), (iii), and (iv) of this subpara graph. 581 UCC 003756 Q 'r J  1910.1001 Title 29--Labor (i) Air purifying respirators. A reus able or single use air purifying respira tor, or a respirator described in para graphs (d)(2) (ii) or (iii) of this section, shall be used to reduce the concentra tions of airborne asbestos fibers in the respirator below the exposure limits prescribed in paragraph (b) of this sec tion, when the ceiling or the 8-hour time-weighted average airborne con centrations of asbestos fibers are rea sonably expected to exceed no more than 10 times those limits. (ii) Powered air purifying respira tors. A full facepiece powered air puri fying respirator, or a powered air puri fying respirator, or a respirator de scribed in paragraph (d)(2)(iii) of this section, shall be used to reduce the concentrations of airborne asbestos fibers in the respirator below the ex posure limits prescribed in paragraph (b) of this section, when the ceiling or the 8-hour time-weighted average con centrations of asbestos fibers are rea sonably expected to exceed 10 times, but not 100 times, those limits. (iii) Type "C" supptied-air respira tors, continuous flow or pressuredemand class. A type "C" continuous flow or pressure-demand, supplied-air respirator shall be used to reduce the concentrations of airborne asbestos fibers in the respirator below the ex posure limits prescribed in paragraph (b) of this section, when the ceiling or the 8-hour time-weighted average air borne concentrations of asbestos fibers are reasonably expected to exceed 100 times those limits. (iv) Establishment of a respirator program, (a) The employer shall es tablish a respirator program in accord ance with the requirements of the American National Standards Prac tices for Respiratory Protection, ANSI Z88.2-1969, which is incorporated by reference herein. (b) See 1910.6 concerning the avail ability of ANSI Z88.2-1969 and the maintenance of a historic file in con nection therewith. The address of the American National Standards Insti tute is given in 1910.100. (c) No employee shall be assigned to tasks requiring the use of respirators if. based upon his most recent exami nation, an examining physician deteri mines that the employee will be unable to function normally wearing a respirator, or that the safety or health of the employee or other employees will be impaired by his use of a respi rator. Such employee shall be rotated to another job or given the opportuni ty to transfer to a different position whose duties he is able to perform with the same employer, in the same geographical area and with the same seniority, status, and rate of pay he had just prior to such transfer, if such a different position is available. (8) Special clothing: The employer shall provide, and require the use of. special clothing, such as coveralls or similar whole body clothing, head co verings, gloves, and foot coverings for any -employee exposed to airborne con centrations of asbestos fibers, which exceed the ceiling level prescribed In paragraph (b) of this section. (4) Change rooms: (i) At any fixed place of employment exposed to air borne concentrations of asbestos fibers in excess of the exposure limits pre scribed in paragraph (b) of this sec tion, the employer shall provide change rooms for employees working regularly at the place. (ii) Clothes lockers: The employer shall provide two separate lockers or containers for each employee, so sepa rated oi isolated as to prevent con tamination of the employees street clothes from his work clothes. (iii) Laundering: (a) Laundering of asbestos contaminated clothing shall be done so as to prevent the release of air-borne asbestos fibers in excess of the exposure limits prescribed in para graph (b) of this section. (b> Any employer who gives asbes tos-contaminated clothing to another person for laundering shall inform such person of the requirement in paragraph (d)(4)(iiiXa) of this section to effectively prevent the release of airborne asbestos fibers in excess of the exposure limits prescribed in para graph <b) of this section. (c) Contaminated clothing shall be transported in sealed impermeable bags, or other closed, impermeable containers, and labeled in accordance with paragraph (g) of this section. (e) Method of measurement All de terminations of airborne concentra tions of asbestos fibers shall be made 582 A jo UCC 003757 Chapter XVII--Occupational Safety and Health Administration 1910.1001 by thfl membrane filter method at 40C-450 x (magnification) (4 millime ter objective) with phase contrast illu mination. (f) Monitoring--(1) Initial determi nations. Within 6 months of the publi cation of this section, every employer shall cause every place of employment where asbestos fibers are released to be monitored in such a way as to de termine whether every employee's ex posure to asbestos fibers is below the limits prescribed in paragraph (b) of this section. If the limits are exceeded, the employer shall immediately under take a compliance program in accord ance with paragraph (c) of this sec tion. (2) Personal monitoring--(i) Sam ples shall be collected from within the breathing zone of the employees, on membrane filters of 0.8 micrometer porosity mounted in an open-face filter holder. Samples shall be takenfor the determination of the 8-hour time-weighted average airborne con centrations and of the ceiling concen trations of asbestos fibers. (ii) Sampling frequency and pat terns. After the initial determinations required by paragraph (f)(1) of this section, samples shall be of such fre quency and pattern as to represent with reasonable accuracy the levels of exposure of employees. In no case shall the sampling be done at intervals greater than 6 months for employees whose exposure to asbestos may rea sonably be foreseen to exceed the limits prescribed by paragraph (b) of this section. (3) Environmental monitoring--ii) Samples shall be collected from areas of a work environment which are rep resentative of the airborne concentra tions of asbestos fibers which may reach the breathing zone of employ ees. Samples shall be collected on a membrane filter of 0.8 micrometer po rosity mounted in an open-face filter holder. Samples shall be taken for the determination of the 8-hour timeweighted average airborne concentra tions and of the ceiling concentrations of asbestos fibers. (ii) Sampling frequency and pat terns. After the initial determinations required by paragraph (f)(1) of this section, samples shall be of such fre quency and pattern as to represent with reasonable accuracy the levels of exposure of the employees. In no case shall sampling be at intervals greater than 6 months for employees whose exposures to asbestos may reasonably be foreseen to exceed the exposure limits prescribed in paragraph (b) of this section. (4) Employee observation of moni toring. Affected employees, or their representatives, shall be given a rea sonable opportunity to observe any monitoring required by this paragraph and shall have access to the records* thereof. (g) Caution signs and labels. (1) Caution signs. :i) Posting. Caution signs shall be provided and displayed at each location where airborne con centrations of asbestos fibers may be in excess of the exposure limits pre scribed in paragraph (b) of this sec tion. Signs shall be posted at such a distance from such a location so that an employee may read the signs and take necessary protective steps before entering the area marked by the signs. Signs-shall be posted at all approaches to areas containing excessive concen trations of airborne asbestos fibers. (ii) Sign specifications. The warning signs required by paragraph (g)(l)(i) of this section shall conform to the requirements of 20" x 14" vertical format ' signs specified in 1910.145(d)(4), and to this subdivi sion. The sighs shall display the fol lowing legend in the lower panel, with letter sizes and styles of a visibility at least equal to that specified in this subdivision. LegantJ Asbestos........................................ Oust Hazard................................... Avoid Breathing Oust.............. ;.... Wear Assigned Protective Equipment. Oo Not Remain In Area Unless Your Work Requires It. Breathing Asbestos Oust May Be Hazardous To Your Health. Notation 1" Sans Sent, Gothic or Block. V Sans Sent. Gothic or Block. Vi" Gothic. 'V Gothic. Vi" Gothic. t4 potnt Gothic. Spacing between lines shall be at least equal to the height of the upper of any two lines. (2) Caution labels--(i) Labeling. Cau tion labels shall be affixed to all raw materials, mixtures, scrap, waste, debris, and other products containing 40-07J 0--79-----Jl 583 * UCC 003758  1910.1001 Title 29--Labor asbestos fibers, or to their containers, except that no label is required where asbestos fibers have been modified by a bonding agent, coating, binder, or other material so that during any rea sonably foreseeable use, handling, storage, disposal, processing, or trans portation, no airborne concentrations of asbestos fibers in excess of the ex posure limits prescribed in paragraph (b) of this section will be released. (ii) Label specifications. The caution labels required by paragraph (g)(2)(i) of this section shall be printed in let-; ters of sufficient size and contrast as to be readily visible and legible. The label shall state: ; Caution Contains Asbestos Fibers Avoid Creating Dust Breathing Asbestos Dust May Cause Serious Bodily Harm (h) Housekeeping--{1) Cleaning. All external surfaces in any place of em ployment shall be maintained free of accumulations of asbestos fibers if, with their dispersion, there would be an excessive concentration. (2) Waste disposal. Asbestos Waste, scrap, debris, bags, containers, equip ment, and asbestos-contaminated clothing, consigned for disposal, which may produce in any reasonably fore seeable use, handling, storage, process ing, disposal, or transportation air borne concentrations of asbestos fibers in excess of the exposure limits pre scribed in paragraph (b) of this section shall be collected and disposed of in sealed impermeable bags, or other closed, impermeable containers. <i) Recordkeeping--(1) Exposure rec ords. Every employer shall maintain records of any personal or environ mental monitoring required by this section. Records shall be maintained for a period of at least 20 years and shall be made available upon request to the Assistant Secretary of Labor for Occupational Safety and Health, the Director of the National Institute for Occupational Safety and Health, and to authorized representatives of either. (2) Employee access. Every employee and former employee shall have rea sonable access to any record required to be maintained by paragraph <i)(l) of this section, which indicates the employee's own exposure to asbestos fibers. (3) Employee notification. Any em ployee found to have been exposed at any time to airborne concentrations of asbestos fibers in excess of the limits prescribed in paragraph (b) of this sec tion shall be notified in writing of the exposure as soon as practicable but not later than 5 days of the finding. The employee shall also be timely no tified of the corrective action being taken. (j) Medical examinations--(1) Gen eral The employer shall provide or make available at his cost, medical ex aminations relative to exposure to as bestos required by this paragraph. (2) Preplacement The employer shall provide or make available to each of his employees, within 30 calen dar days following his first employ ment in an occupation exposed to air borne concentrations of asbestos fibers, a comprehensive medical exam ination, which shall include, as a mini mum, a chest roentgenogram (posteri or-anterior 14 x 17 inches), a history to elicit symptomatology of respira tory disease, and pulmonary function tests to include forced vital capacity (FVC) and forced expiratory volume at 1 second (FEVi.0). (3) Annual examinations. On or before January 31, 1973, and at least annually thereafter, every employer shall provide, or make available, com prehensive medical examinations to each of his employees engaged in occu pations exposed to airborne concentra tions of asbestos fibers. Such annual examination shall include, as a mini mum, a chest roentgenogram (posteri or-anterior 14 x 17 inches), a history to elicit symptomatology of respira tory disease, and pulmonary function tests to include forced vital capacity (FVC) and forced expiratory volume at 1 second (FEV,.). (4) Termination of employment. The employer shall provide, or make avail able, within 30 calendar days before or after the termination of employment of any employee engaged in an occu pation exposed to airborne concentra tions of asbestos fibers, a comprehen sive medical examination which shall 584 UCC 003759 Chapter XVII--Occupational Safety and Health Administration include, as a minimum, a chest roent genogram (posterior-anterior 14 x: 17 inches), a history to elicit symptoma tology of respiratory disease, and pul monary function tests to include forced vital capacity (FVC) and forced expiratory volume at 1 second (PEV,.,). (5) Recent examinations. No medical examination is required of any em ployee, if adequate records show that the employee has been examined in accordance with this paragraph within the past 1-year period. 78 (6) Medical records--(i) Mainte nance. Employers of employees exam ined pursuant to this paragraph shall 1910.19 Special provisions for air con cause to be maintained complete and taminants. accurate records of all such medical examinations. Records shall be re tained by employers for at least 20 years. (ii) Access. The contents of the rec ords of the* medical examinations re (a) Asbestos dust. Section 1910.1001 shall apply to the exposure of every employee to asbestos dust in every em ployment and place of employment covered by 1910.12, 1910.13, 1910.14, 1910.15. or 1910.16, in lieu of any dif quired by this paragraph shall ' be ferent standard on exposure to asbes made available, for inspection and tos dust which would otherwise be ap copying, to the Assistant Secretary of plicable by virtue of any of those sec Labor for Occupational Safety and tions. Health, the Director of NIOSH, to au thorized physicians and medical con Note: Following defines sultants of either the request of an of them, and, upon employee or former additional occupational employee, to his physician. Any physi areas affected.by section cian who conducts a medical examina 1910.19 above: tion required by this paragraph shall furnish to the employer of the exam ined employee all the information spe 1910.12 - Construction cifically required by this paragraph, and any other medical information re lated to occupational exposure to as bestos fibers. Work (construc tion, alteration, and/or repair, in (39 FR 23502. June 27. 1974. Redesignated at -tO FR 27073..May 28, 1975, and amended at 41 FR 11505, Mar. 19, 19761 ' 1910.13 cluding painting and decorating) Ship repairing 1910.14 Shipbuilding 1910.15 Shipbreaking 1910.16 Longshoring 585 UCC 003760 .) Material Safely Data September T, 1976 UNION CARBIDE CORPORATION * 4625 ROYAL AVENUE NIAGARA FALLS, NEW YORK 14302 TELEPHONE:. (716) 2784376 PRODUCT: Chrysotile Asbestos TRADE NAMES: "Calidria" Asbestos CHEMICAL FORMULA: Mg6(0H)BSi401(, II PHYSICAL DATA. BOILING POINT AND MELTING POINT: Not Pertinent SPECIFIC GRAVITY (H20-1): 2.46 VOLATILE CONTENT: Absorbed Water 1 -- 4% By Weight. Structural Water Approximately 13% by Weight. APPEARANCE: Pellets or Fine White Powder. No odor. Very Slight Solubility in Water. t 111 HAZARDOUS INGREDIENTS Asbestos contains no hazardous ingredients. However, the material itself can be hazardous under certain conditions. (Sea V below.) ; I III FIRE AND EXPLOSION HAZARD DATA NON-COMBUSTIBLE MATERIAL: No Fire or Explosion Hazard. 1.VL REACTIVITY DATAv INERT MATERIAL: No Decomposition or Polymerization Conditions. HEALTH* HAZARD DATAL PERMISSIBLE EXPOSURE TO AIRBORNE CONCENTRATION: The current Occupational Safety and Health Standard (CFR 29, 1910.1001) contains the following exposure limits: "The 8-hour time-weighted average airborne concentrations of asbestos fibers to which any employee may be exposed shall not exceed 2 fibers, longer than 5 micrometers, per cubic centimeter of air, as determined by the membrane filter method at 400-450 X magnification (4 millimeter objective) phase contrast illumination. No employee shall be exposed at any time to airborne concentrations of asbestos fibers in excess of 10 fibers, longer than 5 micrometers, per cubic centimeter of air, as determined by the method just noted." EFFECTS OF EXPOSURE: CAUTION: Breathing asbestos may cause serious bodily harm. EMERGENCY AND FIRST AID PROCEDURES: No acute toxicity. Use respirator if airborne asbestos fiber concentration exceeds OSHA limits. STEPS TO BE TAKEN IF MATERIAL IS RELEASED OR SPILLED: Avoid inhalation of dust. Remove spilled material by vacuum cleaner or by water wash. WASTE DISPOSAL: Bags and waste and scrap materials should be disposed of in a manner which will avoid airborne concentrations of asbestos, such as the use of dust-tight trash bags or containers. Ensure that disposal complies with all applicable federal, state or local regulations. _, A ij V Union Carbide Corporation assumes no responsibility and makes no warranty, expressed or implied, repre sentation, promise, or statement as to completeness, accuracy, or currency of any data provided. UCC 003761 VII. SPECIAL PROTECTION INFORMATION VENTILATION: Local exhaust for each operation is preferable. (See American National Standards Institute booklet, Z9.2 - 1971.) General area exhaust is acceptable. No special considerations. PROTECTIVE GLOVES: None EYE PROTECTION: None RESPIRATORY PROTECTION111 The current Occupational Safety and Health Standard CFR 29, 1910.1001 contains the following require ments for respiratory protection. AIRBORNE CONCENTRATION'2' 8-HOUR EXPOSURE'3' CEILING CONCENTRATION 2 maximum 10 maximum 20 maximum 100 maximum 200 maximum 1000 maximum MINIMUM REQUIRED MASK TYPE*4' Not required when allowable limits are not exceeded. Reusable or single use air purifying respirator. Powered filter positive pressure. Over 200 -- Type C positive pressure, air supplied. (1) Allowed only during the time required for installation of engineering controls, when engineering controls are not technically feasible or adequate, and in emergencies. Current OSHA standards require that no em ployee shall be assigned to tasks requiring the use of respirators if, based upon his most recent examina tion an examining physician determines that the employee will be unable to function normally wearing a respirator, or that the safety or health of the employee or other employees will be impaired by the use of a respirator. (2) Fibers per milliliter greater than 5 microns in length, as determined by the membrane filter method at 400-450X magnification (4 millimeter objective) phase contrast illumination. (3) 8-Hour time-weighted average. (4) Only masks certified by NIOSH as acceptable for the exposures encountered may be used. OTHER PROTECTIVE EQUIPMENT: If the ceiling concentration limit is exceeded, clothing providing whole body covering shall be supplied and its use required. ~ | VIIL SPECIAL PRECAUTIONS'* Every place of employment where asbestos fibers are released must be monitored to determine exposure levels. If the permissible time-weighted average and ceiling concentration limits are not exceeded, no special pre cautions are required except: a) Bag damage and dusting should be minimized and dust inhalation avoided. b) A comprehensive medical examination is required for any employee exposed to airborne fibers within 30 days of first such employment, annually thereafter and on termination of employment. c) Personal work clothing can become contaminated with asbestos and may constitute an exposure hazard. Such clothing should be handled and laundered in a manner to avoid airborne concentrations of asbestos. d) Substantial medical evidence indicates that smoking will increase the risk from asbestos exposure. Those working with asbestos should not smoke. Where exposure limits may be exceeded, reference should be made to the regulation CFR 29, 1910.1001 for details on caution signs, monitoring, change rooms, protective clothing laundering and record keeping. UCC 003762 A CALIDRIA ASBESTOS RG-244 TYPICAL CHEMICAL ANALYSIS Component Weight % MgO SIO2 AI2O3 Fe Ca Cd Co Cr Cu Mn N1 Se Loss on Ignition (CO2 & H2O) 38.2 46.1 0.2 1.4 0.025 <0.00002 ' 0.004 0.13 0.005 0.05 0.16 <0.001 12.7 Component Ag A1 As Au B Ba Be Bi Ca Cb Cd Co Cr Cs * m "Oct' Fe Gd Ge Hf Hg In Ir K La Li Mg fa Mo Na TYPICAL SPECTROGRAPHIC ANALYSIS Detection Limit, Ut. % Analysis, Wt. t 0.001 0.003 0.01 0.002 0.006 0.003 0.001 0.005 0.002 0.0--06 0.01 0.003 N.A.(1) 0.001 0.006 0.01 0.005 0.03 0.02 0.03 0.03L N.A.*1) 0.01 0.1 0.001 0.003 0.003 0.03 N.D.*2* 0.08-0.8 N.O. N.O. N.O. N.O. N.D. N.D. 0.008-0.08 N.D.,,. <0.00002(3) 0.004-0.04 0.02-0.2 N.O. 0.4-4.0 N.D. N.O. N.D. N.D. N.D. N...D... N.D. N.O. Major 0.008-0.08 N.D. 0.08-0.8 Component Ni Os P Pb Pd Pt Rb Re Rh Ra Sb Sc Se Si Sn Sr Ta Te Th Ti T1 U V W Y Yb Zn Zr Detection Limit, Wt. % 0.003 0.03 0.08 0.003 0.005 0.005,. N.A.t*) 0.03 0.02 0.03 0.01 0...0.1. 0.001 0.002 0.01 0.01 0.05 0.03 0.003 0.2 0.1 0.003 0.01 . 0.01 0.01 0.02 0.006 Analysis, Wt. % 0.08-0.8 N.D. N.D. N.D. N.D. N--.D. N.D. N.D. N.D. N.D. N*D*(31 <o.oorJJ Major N.D. N.D. N.D. N.D. N.D. 0.0008-0.008 N.D. N.D. N.D. N.D. N.D. N.D. N.D. N.D. ^ N.A. - Not analyzed. ^ N.O. - Not detected. By chemical analysis UCC 003763 A 1 \J O v1