Document KR7pJYZjbM3KwobKGb5KvmoX0

FILE NAME: Asbestos Cement Pipe and Sheet (ACPS) DATE: 1988 DOC#: ACPS128 DOCUMENT DESCRIPTION: Recommended Work Practices for A/C Pipe - A/C Pipe Producers Assoc. Recommended W ork Practices forA /C Pipe Table of Contents Introduction .1 Asbestos and H ealth.................... ........... . .2 OSHA Asbestos Construction Standard 3 Products and Operations 4 Recommended Work Practices -- Shipping, Receiving, Handling and Assembly ............................... . .5 -- Tying-In A/C Pipe Closure System 6 Snap Cutting 7 Machining Field Lathe Manual 8 Power .9 -- Tapping A/C Pipe Pressure. . . .................... N o n - P r e ss u r e ............................... Tapped C o u p lin g .......................... . . 10 . . 11 12 -- Housekeeping and Waste Disposal. 13 1988 by AiC Pipe Producers Association Printed in U S A r Introduction Information and guidance given in this pamphlet are to assist compliance with U.S. federal asbestos workplace standards when shipping, receiving, han dling and assembling asbestos cement (A/C) pipe. The use of good work practices is recognized as a principal means of reducing the health hazards associated with prolonged exposure to high levels of asbestos fibers. In 1977, the A/C Pipe Producers Association com missioned Equitable Environmental Health, Inc. to study and collect information, including quantitative, on potential asbestos fiber exposures to A/C pipe workers. EEH simulated field operations for: 1) unloading pressure pipe at the work site; 2) laying pressure pipe in a trench; 3) cutting pressure pipe with snap cutting equipment; and, 4) machining pressure and sewer pipe with manual and power lathes. These operations produced airborne asbestos fiber concen trations below the current U.S. Occupational Safety and Health Administration standard when the work practices outlined herein were used. In fact, OSHA noted the two EEH studies in its preamble to the 1986 asbestos construction standard, in determining that A/C pipe exposures can be checked at levels under 0.1 asbestos fibers/cubic centimeter, the OSHA "action level." Sit: 51 FR 22663 (1986). Thus, the work practices and engineering controls that appear on the following pages have been developed through experience, study and field testing. They are designed to achieve safe job site conditions when working with A/C pipe. ACPPA believes that this pamphlet will be helpful to w arehousem en, architects, engineers, superintendents, contractors, foremen and pipe installa tion crews. Copies of the EEH studies are available, write: ACPPA, 1745 Jefferson Davis Hwy, Suite 509. Arl ington VA 22202 1 Asbestos and Health Asbestos is the name of a class of magnesium-silicate minerals that occur m fibrous form. Minerals that are commercially referred to in this group are chrysotile, crocidolite and amosite. Asbestos can cause a disabling respiratory disease, asbestosis, and various types of cancers, like lung cancer and mesothelioma, if the fibers are inhaled in large quantities over long periods of time. The symptoms ot these diseases generally do not appear for 20 or more years after initial exposure. Epidemiological studies indicate that the risk of lung cancer among exposed workers who smoke ciga rettes is greatly increased over the risk of lung cancer among exposed non-smokers. These studies also sug gest that cessation of smoking will reduce the risk of lung cancer for a person exposed to asbestos. The potential for a product containing asbestos to release respirable fibers depends on its degree of friabili ty Friable means that the material can be crumbled with hand pressure and is therefore likely to emit fibers. A/C pipe, generally considered a non-friable product can emit some airborne fibers if the material is cut or sawed However, when installing or maintaining A/C pipe, the release of airborne asbestos fibers can be kept well below the U.S. Occupational Safety and Health Ad ministration asbestos construction standard's 0.1 fiber-cubic centimeter "action level" or even completely eliminated, through the use of work practices and engineering controls demonstrated in this pamphlet. i Summary of OSHA i Asbestos Standard | The Occupational Safety and Health Act was signed j into law on Dec. 29, 1970. Under the Act, the U.S. I Occupational Safety and Health Administration was created within the Department of Labor. The law in- I eluded among OSHA's duties: to reduce workplace hazards, and to develop mandatory job safety and health standards and enforce them effectively. On Dec. 7, 1971, the Secretary of Labor issued a temporary standard for workplace exposure to asbestos dust. Six months later, a permanent standard for asbestos exposure was promulgated. Since, the OSHA asbestos standard has undergone several overhauls, especially with regards to the "permissible exposure limit." In OSHA's current standard, effective July 21, 1986, it is the employer's responsibility to ensure that employee exposures to airborne asbestos fiber concen trations do not exceed the permissible exposure limit, i.e., an eight-hour time-weighted average of 0.2 fibers greater than five microns in length per cubic centimeter of air. Additionally, the 1986 OSHA construction standard on asbestos, 29 CFR 1926, prescribes initial monitor ing and other stringent compliance measures. High speed abrasive disc saws are prohibited if not equip ped with local exhaust ventilation and a HEPA filter dust collection system. (Notwithstanding, ACPPA had recom m ended against the use of such un equipped saws in its work practices handbook pub! lished in 1977.) Employees exposed to airborne asbestos fibers at and above an action level of 0.1 fibers/cc must be specially trained and allowed to observe all air monitoring, [f exposed for 30 or more days a year, they must be provided with medical surveillance. *" However, airborne asbestos fiber exposures that are less than the action level fall outside of the standard's scope for the most part. A/C pipe contractors can avoid the initial air monitoring requirements required at the beginning'ot 2 3 each asbestos job. The standard provides that objec tive data may be used to demonstrate that employee exposures will be below the action level under those vvoik conditions which have the greatest potential for tiber release. The A/C pipe work practices recommended here are based on data for "peak dust concentrations" represent ing short time periods of maximum exposure. Snap cutting and machining operations involving A/C pipe are infrequent and of short duration. In using these recommended work practices, it is improbable that field personnel would be exposed to asbestos levels ex ceeding the OT tibers/cc OSHA action level in a typical working day Products and Operations A C Pipe Products covered by these work and engineering controls include: "Class" Pressure Pipe; 'Transmission" Pressure Pipe; Gravity Sewer Pipe; Building Sewer Pipe; Pressure Sewer Pipe; and, Storm Drain Pipe. practices Operations these work practices and engineering con trols apply to include: Shipping, Receiving and Handling; Tying-In: Tapping; and, Housekeeping and Waste Disposal. 4 Tying-In A/C Pipe: Closure System Tying-In A/G Pigel Snap CutfifiSj Vssi&rM .V / f <'` * - **> ^ 1 .-' / ''"'i;' >V' ;' iw'i-'rf-r: jtf ^ . 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Through the use of closure lengths and closufe^cou-. plings, closure distances from one inch to 13ifl^feaft be spanned without any field cutting ofA/G'pipev The practice of using these closure lengths and-couplirig also eliminates possible airborne asbestos; fiBeiC posures resi ""W k te % fm %i& &i^ ^ y rag ^ |d jro u j^ T l^ pjpff ; Et^S^v,\pi?^!'^ f f ^ & ^ a r''*ir`^? l , ,ct I xsi' *".`i p A/C Pipe Products: Ail Size Range: Al! !(! -S'P'-l WARNING: HIGH-SPEED'ABRASIVE DISC SWSARE PROHIBITED BY OSHA IF NOT EQUIPPED; WITH LOCAL EXHAUST VENTILATION AND A HEPA FILTER DUST COLLECTION SYSTEM. 6 W<>>XA__ z:,v;'?fm8s&xu\-- y jm m '.HT's'*c5id^-EA3aL_ - ',,V'i.iT/'' ff-T pTTSl|%^| Tying-In A/C Pipe: Machining--Field Lathe--Manual r\ 1^ ~~ \ ( cv , X/ V** - '* - i; TyingJh/A/C Pipe: -j Machining--Field i Lathe--Power j s ___ Manual field lathes are designed to end-trim and re machine rough pipe barrels into factory-machined end profiles. The lathe consists of an adjustable, self-aligning arbor inserted into the pipe bore (which acts as a man drel upon which the turning handle operates), a screwfed turning frame, carbide machining blades and' manual (hand or ratchet) turning handles. ... j A/C Pipe Products: All Size Range: All . L' ` _! 8 Tapping A1C Pipe Pressure ta p ^ i^ A Z Pipe: K Non-Pssure i _ * <jn , i i*j \<y* ^ Pressure or "wet" tapping can.be u H l i z ^ f o ^ s e n r ^ ^ i ^ : h . ^ ^ ^ n^ ^ e ^ p y - t | Ppi:ng.can be.utilized for serconnections while the pipe is under p re s s u f e F rr ftli^ ^ li;, yiee.hntef^nn^fcSnffIit^ab;Qve.the>.trench, the tap- trench, the manual or powef-driveri*equi'p.rn..n| fixed to the pipe with a-chain y o K q ^ e q m S i^ boring and inserting bar drills- and! tap||fK|g| _ and inserts, then, a corporatibn-stppipqpf tool's pressure chamber protectsia^|iy^i " Corpora- to the and catches the A/C chips; makingltf ' free operation. To minimize the a) foulingrofA/alt meters, etc. with chips, and?b)'un: of asbestos fibers tq^dgqkihg watehiyp r w f c ^ p fgEfeyeuum -with' HEPA-filtered positive-purge, "blow-f .features. %%'[ ^M : A/C Pipe Products; AIK ; q , DQN ^ D ^ ^E E K O R USE^COMPRESSED M Size Range; All ,}?^T>**' a?"~~fl A/C Pipe Productsr Nn-pressr Pipe ' '-A 10 -w .c ' * ' Tapping A/C Pipe: Tapped Coupling Housekeeping and Waste Disposal Clean-up is equally important to a safe A/C pipe con struction project. Airborne asbestos fibers can be created from A/C pipe dust, cuttings and debris AVOID CREATING DUST. In the field at the temporary job site, A/C pipe dust, cuttings and debris should be covered immediately with dirt and buried alongside in the trench. Otherwise, A/C pipe dust, cuttings and debris should be wetted with water or a mixture of water and sur factant, and then promptly collected from the ground, etc. in leak-tight six-mil thick plastic bags, plastic-lined metal cardboard containers, or plastic-lined metal con tainers. DO NOT DRY SWEEP. The collected waste materials should be discarded at a waste disposal site in accordance with local, state and federal laws and regulations Field tapping of A/C pipe can be eliminate(d`^ifogetfi|^ through the use of a factory-installed,. th'rea3ed~6fass| insert coupling. Besides its factory,-precision^tFus| "tapped coupling" also eliminates the posB ibili^bEW ^' cuttings entering the pipeline, which/cSmfdi|g^' regulators, meters, etc. In place of a regular c o u p H n g ^ ^ l ^ M M | tapped coupling, mark the lo c a tio n |^ |^ ic p r i? o r g tion stop and continue laying A/C Pipe Products: Pressure Size Range: All ' *' ................. ''^ 6 ' 0 'f i f ,vc . , - 12 13 A/C PipeRoduoersAssociation 1745 Jefferson Davis Hwy, Suite 509, Arlington, VA 22202 Revised September 198B